Debian Bug report logs - #536183
Can't change CPU scaling governor after .29 to .30 upgrade.

Package: linux-2.6; Maintainer for linux-2.6 is (unknown);

Reported by: "Trent W. Buck" <trentbuck@gmail.com>

Date: Wed, 8 Jul 2009 02:21:02 UTC

Severity: normal

Done: Moritz Muehlenhoff <jmm@inutil.org>

Bug is archived. No further changes may be made.

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Report forwarded to debian-bugs-dist@lists.debian.org, Debian Kernel Team <debian-kernel@lists.debian.org>:
Bug#536183; Package linux-image-2.6.30-1-686. (Wed, 08 Jul 2009 02:21:04 GMT) (full text, mbox, link).

Acknowledgement sent to "Trent W. Buck" <trentbuck@gmail.com>:
New Bug report received and forwarded. Copy sent to Debian Kernel Team <debian-kernel@lists.debian.org>. (Wed, 08 Jul 2009 02:21:04 GMT) (full text, mbox, link).

Message #5 received at submit@bugs.debian.org (full text, mbox, reply):

From: "Trent W. Buck" <trentbuck@gmail.com>
To: Debian Bug Tracking System <submit@bugs.debian.org>
Subject: Can't change CPU scaling governor after .29 to .30 upgrade.
Date: Wed, 08 Jul 2009 12:16:58 +1000
Package: linux-image-2.6.30-1-686
Version: 2.6.30-1
Severity: normal

After upgrading from .29 to .30, I can no longer change my CPU
frequency scaling governor:

    # cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors
    ondemand performance
    # printf ondemand >/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
    # cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
    performance

This is super annoying.  I am using an EeePC 701 with a Celeron CPU.


-- Package-specific info:
** Version:
Linux version 2.6.30-1-686 (Debian 2.6.30-1) (waldi@debian.org) (gcc version 4.3.3 (Debian 4.3.3-11) ) #1 SMP Sun Jun 14 16:11:32 UTC 2009

** Command line:
root=/dev/sda1 ro quiet 

** Not tainted

** Kernel log:
[    3.043145] usb 3-1: new low speed USB device using uhci_hcd and address 2
[    3.204374] ata2.00: CFA: SILICONMOTION SM223AC, , max UDMA/66
[    3.204385] ata2.00: 7815024 sectors, multi 0: LBA 
[    3.220316] ata2.00: configured for UDMA/66
[    3.220602] usb 3-1: New USB device found, idVendor=0a81, idProduct=0101
[    3.220612] usb 3-1: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[    3.220620] usb 3-1: Product: USB Keyboard
[    3.220627] usb 3-1: Manufacturer: CHESEN
[    3.220844] usb 3-1: configuration #1 chosen from 1 choice
[    3.220916] scsi 1:0:0:0: Direct-Access     ATA      SILICONMOTION SM n/a  PQ: 0 ANSI: 5
[    3.273160] Uniform Multi-Platform E-IDE driver
[    3.346432] usbcore: registered new interface driver hiddev
[    3.371220] Driver 'sd' needs updating - please use bus_type methods
[    3.372596] input: CHESEN USB Keyboard as /devices/pci0000:00/0000:00:1d.1/usb3/3-1/3-1:1.0/input/input2
[    3.372732] generic-usb 0003:0A81:0101.0001: input,hidraw0: USB HID v1.10 Keyboard [CHESEN USB Keyboard] on usb-0000:00:1d.1-1/input0
[    3.373070] sd 1:0:0:0: [sda] 7815024 512-byte hardware sectors: (4.00 GB/3.72 GiB)
[    3.373120] sd 1:0:0:0: [sda] Write Protect is off
[    3.373129] sd 1:0:0:0: [sda] Mode Sense: 00 3a 00 00
[    3.373197] sd 1:0:0:0: [sda] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
[    3.373485]  sda: sda1
[    3.374217] sd 1:0:0:0: [sda] Attached SCSI disk
[    3.402899] input: CHESEN USB Keyboard as /devices/pci0000:00/0000:00:1d.1/usb3/3-1/3-1:1.1/input/input3
[    3.403129] generic-usb 0003:0A81:0101.0002: input,hidraw1: USB HID v1.10 Device [CHESEN USB Keyboard] on usb-0000:00:1d.1-1/input1
[    3.403183] usbcore: registered new interface driver usbhid
[    3.403191] usbhid: v2.6:USB HID core driver
[    3.603159] EXT3-fs: INFO: recovery required on readonly filesystem.
[    3.603170] EXT3-fs: write access will be enabled during recovery.
[    4.578948] kjournald starting.  Commit interval 5 seconds
[    4.578983] EXT3-fs: recovery complete.
[    4.581037] EXT3-fs: mounted filesystem with ordered data mode.
[    4.969512] uvesafb: Intel Corporation, Intel(r)915GM/910ML/915MS Graphics Controller, Hardware Version 0.0, OEM: Intel(r)915GM/910ML/915MS Graphics Chip Accelerated VGA BIOS, VBE v3.0
[    5.003276] uvesafb: VBIOS/hardware supports DDC2 transfers
[    5.016558] uvesafb: monitor limits: vf = 88 Hz, hf = 86 kHz, clk = 175 MHz
[    5.016917] uvesafb: scrolling: redraw
[    5.102019] Console: switching to colour frame buffer device 100x30
[    5.105967] uvesafb: framebuffer at 0xd0000000, mapped to 0xf8400000, using 3000k, total 7872k
[    5.105976] fb0: VESA VGA frame buffer device
[    5.370784] udev: starting version 141
[    5.561862] Marking TSC unstable due to TSC halts in idle
[    5.562028] ACPI: CPU0 (power states: C1[C1] C2[C2] C3[C3])
[    5.562118] processor ACPI_CPU:00: registered as cooling_device0
[    5.562133] ACPI: Processor [CPU1] (supports 8 throttling states)
[    5.562478] input: Power Button as /devices/LNXSYSTM:00/LNXPWRBN:00/input/input4
[    5.562496] ACPI: Power Button [PWRF]
[    5.562664] input: Lid Switch as /devices/LNXSYSTM:00/device:00/PNP0C0D:00/input/input5
[    5.565762] ACPI: AC Adapter [AC0] (on-line)
[    5.570891] ACPI: Lid Switch [LID]
[    5.571114] input: Sleep Button as /devices/LNXSYSTM:00/device:00/PNP0C0E:00/input/input6
[    5.571131] ACPI: Sleep Button [SLPB]
[    5.571271] input: Power Button as /devices/LNXSYSTM:00/device:00/PNP0C0C:00/input/input7
[    5.571283] ACPI: Power Button [PWRB]
[    5.661045] eeepc: Eee PC Hotkey Driver
[    5.708799] eeepc: Hotkey init flags 0x41
[    5.710304] eeepc: Get control methods supported: 0x101711
[    5.710487] input: Asus EeePC extra buttons as /devices/virtual/input/input8
[    5.818810] Atheros(R) L2 Ethernet Driver - version 2.2.3
[    5.818819] Copyright (c) 2007 Atheros Corporation.
[    5.818891] atl2 0000:03:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
[    5.818912] atl2 0000:03:00.0: setting latency timer to 64
[    5.916173] cfg80211: Using static regulatory domain info
[    5.916183] cfg80211: Regulatory domain: US
[    5.916188] 	(start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
[    5.916199] 	(2402000 KHz - 2472000 KHz @ 40000 KHz), (600 mBi, 2700 mBm)
[    5.916208] 	(5170000 KHz - 5190000 KHz @ 40000 KHz), (600 mBi, 2300 mBm)
[    5.916218] 	(5190000 KHz - 5210000 KHz @ 40000 KHz), (600 mBi, 2300 mBm)
[    5.916227] 	(5210000 KHz - 5230000 KHz @ 40000 KHz), (600 mBi, 2300 mBm)
[    5.916236] 	(5230000 KHz - 5330000 KHz @ 40000 KHz), (600 mBi, 2300 mBm)
[    5.916245] 	(5735000 KHz - 5835000 KHz @ 40000 KHz), (600 mBi, 3000 mBm)
[    5.932714] ACPI: Battery Slot [BAT0] (battery present)
[    5.981045] cfg80211: Calling CRDA for country: US
[    6.121499] intel_rng: FWH not detected
[    6.136646] ath5k 0000:01:00.0: PCI INT A -> GSI 18 (level, low) -> IRQ 18
[    6.136669] ath5k 0000:01:00.0: setting latency timer to 64
[    6.136760] ath5k 0000:01:00.0: registered as 'phy0'
[    6.225412] input: PC Speaker as /devices/platform/pcspkr/input/input9
[    6.343376] i801_smbus 0000:00:1f.3: PCI INT B -> GSI 19 (level, low) -> IRQ 19
[    6.751187] HDA Intel 0000:00:1b.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
[    6.751261] HDA Intel 0000:00:1b.0: setting latency timer to 64
[    6.980888] phy0: Selected rate control algorithm 'minstrel'
[    6.982564] ath5k phy0: Atheros AR2425 chip found (MAC: 0xe2, PHY: 0x70)
[    7.021559] input: HDA Digital PCBeep as /devices/pci0000:00/0000:00:1b.0/input/input10
[    7.374491] Synaptics Touchpad, model: 1, fw: 6.3, id: 0x180b1, caps: 0xa04753/0x200000
[    7.460870] input: SynPS/2 Synaptics TouchPad as /devices/platform/i8042/serio1/input/input11
[    7.898623] EXT3 FS on sda1, internal journal
[    8.168103] loop: module loaded
[    8.295733] ondemand governor failed, too long transition latency of HW, fallback to performance governor
[    8.295767] p4-clockmod: P4/Xeon(TM) CPU On-Demand Clock Modulation available
[    8.701868] ondemand governor failed, too long transition latency of HW, fallback to performance governor
[   10.172017] Clocksource tsc unstable (delta = -94065702 ns)
[   10.260890] ADDRCONF(NETDEV_UP): wlan0: link is not ready
[   10.682785] atl2 0000:03:00.0: irq 27 for MSI/MSI-X
[   10.683468] ADDRCONF(NETDEV_UP): eth0: link is not ready
[   10.888140] atl2: eth0 NIC Link is Up<100 Mbps Full Duplex>
[   10.888716] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[   11.607965] fuse init (API version 7.11)
[   21.572061] eth0: no IPv6 routers present
[   73.276680] ondemand governor failed, too long transition latency of HW, fallback to performance governor
[  158.079576] ondemand governor failed, too long transition latency of HW, fallback to performance governor
[ 2192.786164] ondemand governor failed, too long transition latency of HW, fallback to performance governor
[ 2235.556866] ondemand governor failed, too long transition latency of HW, fallback to performance governor

** Loaded modules:
Module                  Size  Used by
fuse                   47760  1 
p4_clockmod             3948  0 
speedstep_lib           4136  1 p4_clockmod
loop                   13316  0 
joydev                  8576  0 
snd_hda_codec_realtek   178316  1 
arc4                    1560  2 
ecb                     2368  2 
snd_hda_intel          22192  0 
serio_raw               4556  0 
snd_hda_codec          63520  2 snd_hda_codec_realtek,snd_hda_intel
snd_hwdep               6104  1 snd_hda_codec
snd_pcm                62364  2 snd_hda_intel,snd_hda_codec
i2c_i801                8580  0 
psmouse                37528  0 
snd_seq                42436  0 
pcspkr                  2104  0 
i2c_core               20840  1 i2c_i801
ath5k                 104368  0 
rng_core                3664  0 
snd_timer              17436  2 snd_pcm,snd_seq
snd_seq_device          6136  1 snd_seq
mac80211              142728  1 ath5k
led_class               3852  1 ath5k
snd                    49040  8 snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm,snd_seq,snd_timer,snd_seq_device
soundcore               6184  1 snd
cfg80211               55548  2 ath5k,mac80211
atl2                   23036  0 
snd_page_alloc          8180  2 snd_hda_intel,snd_pcm
evdev                   8028  7 
battery                 6012  0 
eeepc_laptop           10516  0 
ac                      2960  0 
rfkill                  9668  2 eeepc_laptop
button                  5060  0 
processor              34476  1 
uvesafb                23660  1 
cn                      7300  2 uvesafb
ext3                  107180  1 
jbd                    41040  1 ext3
mbcache                 6924  1 ext3
sd_mod                 28748  2 
crc_t10dif              1632  1 sd_mod
ata_generic             4340  0 
ide_pci_generic         3632  0 
usbhid                 31544  0 
hid                    34516  1 usbhid
ide_core               88100  1 ide_pci_generic
ahci                   30068  0 
ata_piix               20848  1 
libata                150624  3 ata_generic,ahci,ata_piix
uhci_hcd               19140  0 
ehci_hcd               29660  0 
intel_agp              22908  1 
scsi_mod              131604  2 sd_mod,libata
usbcore               125872  4 usbhid,uhci_hcd,ehci_hcd
agpgart                30788  1 intel_agp
video                  17980  0 
output                  2604  1 video
thermal                12572  0 
fan                     4040  0 
thermal_sys            13128  4 processor,video,thermal,fan

** PCI devices:
00:00.0 Host bridge [0600]: Intel Corporation Mobile 915GM/PM/GMS/910GML Express Processor to DRAM Controller [8086:2590] (rev 04)
	Subsystem: ASUSTeK Computer Inc. Device [1043:82d9]
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ >SERR- <PERR- INTx-
	Latency: 0
	Capabilities: <access denied>
	Kernel driver in use: agpgart-intel

00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 915GM/GMS/910GML Express Graphics Controller [8086:2592] (rev 04) (prog-if 00 [VGA controller])
	Subsystem: ASUSTeK Computer Inc. Device [1043:82d9]
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin A routed to IRQ 5
	Region 0: Memory at f7f00000 (32-bit, non-prefetchable) [size=512K]
	Region 1: I/O ports at ec00 [size=8]
	Region 2: Memory at d0000000 (32-bit, prefetchable) [size=256M]
	Region 3: Memory at f7ec0000 (32-bit, non-prefetchable) [size=256K]
	Expansion ROM at <unassigned> [disabled]
	Capabilities: <access denied>

00:02.1 Display controller [0380]: Intel Corporation Mobile 915GM/GMS/910GML Express Graphics Controller [8086:2792] (rev 04)
	Subsystem: ASUSTeK Computer Inc. Device [1043:82d9]
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Region 0: Memory at f7f80000 (32-bit, non-prefetchable) [size=512K]
	Capabilities: <access denied>

00:1b.0 Audio device [0403]: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) High Definition Audio Controller [8086:2668] (rev 04)
	Subsystem: ASUSTeK Computer Inc. Device [1043:82a1]
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0, Cache Line Size: 16 bytes
	Interrupt: pin A routed to IRQ 16
	Region 0: Memory at f7eb8000 (64-bit, non-prefetchable) [size=16K]
	Capabilities: <access denied>
	Kernel driver in use: HDA Intel

00:1c.0 PCI bridge [0604]: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) PCI Express Port 1 [8086:2660] (rev 04) (prog-if 00 [Normal decode])
	Control: I/O- Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx+
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0, Cache Line Size: 16 bytes
	Bus: primary=00, secondary=04, subordinate=04, sec-latency=0
	Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ <SERR- <PERR-
	BridgeCtl: Parity- SERR+ NoISA+ VGA- MAbort- >Reset- FastB2B-
		PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
	Capabilities: <access denied>
	Kernel driver in use: pcieport-driver

00:1c.1 PCI bridge [0604]: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) PCI Express Port 2 [8086:2662] (rev 04) (prog-if 00 [Normal decode])
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx+
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0, Cache Line Size: 16 bytes
	Bus: primary=00, secondary=03, subordinate=03, sec-latency=0
	Memory behind bridge: fbf00000-fbffffff
	Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ <SERR- <PERR-
	BridgeCtl: Parity- SERR+ NoISA+ VGA- MAbort- >Reset- FastB2B-
		PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
	Capabilities: <access denied>
	Kernel driver in use: pcieport-driver

00:1c.2 PCI bridge [0604]: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) PCI Express Port 3 [8086:2664] (rev 04) (prog-if 00 [Normal decode])
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx+
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0, Cache Line Size: 16 bytes
	Bus: primary=00, secondary=01, subordinate=02, sec-latency=0
	Memory behind bridge: f8000000-fbefffff
	Prefetchable memory behind bridge: 00000000f0000000-00000000f6ffffff
	Secondary status: 66MHz- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort+ <SERR- <PERR-
	BridgeCtl: Parity- SERR+ NoISA+ VGA- MAbort- >Reset- FastB2B-
		PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
	Capabilities: <access denied>
	Kernel driver in use: pcieport-driver

00:1d.0 USB Controller [0c03]: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #1 [8086:2658] (rev 04) (prog-if 00 [UHCI])
	Subsystem: ASUSTeK Computer Inc. Device [1043:82d8]
	Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin A routed to IRQ 23
	Region 4: I/O ports at e400 [size=32]
	Kernel driver in use: uhci_hcd

00:1d.1 USB Controller [0c03]: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #2 [8086:2659] (rev 04) (prog-if 00 [UHCI])
	Subsystem: ASUSTeK Computer Inc. Device [1043:82d8]
	Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin B routed to IRQ 19
	Region 4: I/O ports at e480 [size=32]
	Kernel driver in use: uhci_hcd

00:1d.2 USB Controller [0c03]: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #3 [8086:265a] (rev 04) (prog-if 00 [UHCI])
	Subsystem: ASUSTeK Computer Inc. Device [1043:82d8]
	Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin C routed to IRQ 18
	Region 4: I/O ports at e800 [size=32]
	Kernel driver in use: uhci_hcd

00:1d.3 USB Controller [0c03]: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB UHCI #4 [8086:265b] (rev 04) (prog-if 00 [UHCI])
	Subsystem: ASUSTeK Computer Inc. Device [1043:82d8]
	Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin D routed to IRQ 16
	Region 4: I/O ports at e880 [size=32]
	Kernel driver in use: uhci_hcd

00:1d.7 USB Controller [0c03]: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB2 EHCI Controller [8086:265c] (rev 04) (prog-if 20 [EHCI])
	Subsystem: ASUSTeK Computer Inc. Device [1043:82d8]
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin A routed to IRQ 23
	Region 0: Memory at f7eb7c00 (32-bit, non-prefetchable) [size=1K]
	Capabilities: <access denied>
	Kernel driver in use: ehci_hcd

00:1e.0 PCI bridge [0604]: Intel Corporation 82801 Mobile PCI Bridge [8086:2448] (rev d4) (prog-if 01 [Subtractive decode])
	Control: I/O- Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Bus: primary=00, secondary=05, subordinate=05, sec-latency=32
	Secondary status: 66MHz- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort+ <SERR- <PERR-
	BridgeCtl: Parity- SERR+ NoISA+ VGA- MAbort- >Reset- FastB2B-
		PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
	Capabilities: <access denied>

00:1f.0 ISA bridge [0601]: Intel Corporation 82801FBM (ICH6M) LPC Interface Bridge [8086:2641] (rev 04)
	Subsystem: ASUSTeK Computer Inc. Device [1043:82d8]
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap- 66MHz- UDF- FastB2B- ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0

00:1f.2 IDE interface [0101]: Intel Corporation 82801FBM (ICH6M) SATA Controller [8086:2653] (rev 04) (prog-if 80 [Master])
	Subsystem: ASUSTeK Computer Inc. Device [1043:82d8]
	Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin B routed to IRQ 19
	Region 0: I/O ports at 01f0 [size=8]
	Region 1: I/O ports at 03f4 [size=1]
	Region 2: I/O ports at 0170 [size=8]
	Region 3: I/O ports at 0374 [size=1]
	Region 4: I/O ports at ffa0 [size=16]
	Capabilities: <access denied>
	Kernel driver in use: ata_piix

00:1f.3 SMBus [0c05]: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) SMBus Controller [8086:266a] (rev 04)
	Subsystem: ASUSTeK Computer Inc. Device [1043:82d8]
	Control: I/O+ Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Interrupt: pin B routed to IRQ 19
	Region 4: I/O ports at 0400 [size=32]
	Kernel driver in use: i801_smbus

01:00.0 Ethernet controller [0200]: Atheros Communications Inc. AR242x 802.11abg Wireless PCI Express Adapter [168c:001c] (rev 01)
	Subsystem: Device [1a3b:1026]
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0, Cache Line Size: 16 bytes
	Interrupt: pin A routed to IRQ 18
	Region 0: Memory at fbef0000 (64-bit, non-prefetchable) [size=64K]
	Capabilities: <access denied>
	Kernel driver in use: ath5k

03:00.0 Ethernet controller [0200]: Attansic Technology Corp. L2 100 Mbit Ethernet Adapter [1969:2048] (rev a0)
	Subsystem: ASUSTeK Computer Inc. Device [1043:8233]
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0, Cache Line Size: 16 bytes
	Interrupt: pin A routed to IRQ 27
	Region 0: Memory at fbfc0000 (64-bit, non-prefetchable) [size=256K]
	Expansion ROM at fbfa0000 [disabled] [size=128K]
	Capabilities: <access denied>
	Kernel driver in use: atl2

** /proc/cpuinfo:

processor	: 0
vendor_id	: GenuineIntel
cpu family	: 6
model		: 13
model name	: Intel(R) Celeron(R) M processor          900MHz
stepping	: 8
cpu MHz		: 900.000
cache size	: 512 KB
fdiv_bug	: no
hlt_bug		: no
f00f_bug	: no
coma_bug	: no
fpu		: yes
fpu_exception	: yes
cpuid level	: 2
wp		: yes
flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov clflush dts acpi mmx fxsr sse sse2 ss tm pbe nx up bts
bogomips	: 1259.98
clflush size	: 64
power management:


-- System Information:
Debian Release: squeeze/sid
  APT prefers testing
  APT policy: (990, 'testing'), (500, 'unstable'), (1, 'experimental')
Architecture: i386 (i686)

Kernel: Linux 2.6.30-1-686 (SMP w/1 CPU core)
Locale: LANG=en_AU.utf8, LC_CTYPE=en_AU.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

Versions of packages linux-image-2.6.30-1-686 depends on:
ii  debconf [debconf-2.0]         1.5.26     Debian configuration management sy
ii  initramfs-tools [linux-initra 0.93.3     tools for generating an initramfs
ii  module-init-tools             3.7-pre9-1 tools for managing Linux kernel mo

Versions of packages linux-image-2.6.30-1-686 recommends:
ii  libc6-i686                    2.9-12     GNU C Library: Shared libraries [i

Versions of packages linux-image-2.6.30-1-686 suggests:
ii  grub                          0.97-53    GRand Unified Bootloader (Legacy v
pn  linux-doc-2.6.30              <none>     (no description available)

-- debconf information:
  linux-image-2.6.30-1-686/preinst/lilo-has-ramdisk:
  shared/kernel-image/really-run-bootloader: true
  linux-image-2.6.30-1-686/postinst/old-initrd-link-2.6.30-1-686: true
  linux-image-2.6.30-1-686/postinst/create-kimage-link-2.6.30-1-686: true
  linux-image-2.6.30-1-686/postinst/depmod-error-2.6.30-1-686: false
  linux-image-2.6.30-1-686/postinst/old-system-map-link-2.6.30-1-686: true
  linux-image-2.6.30-1-686/prerm/would-invalidate-boot-loader-2.6.30-1-686: true
  linux-image-2.6.30-1-686/preinst/overwriting-modules-2.6.30-1-686: true
  linux-image-2.6.30-1-686/preinst/lilo-initrd-2.6.30-1-686: true
  linux-image-2.6.30-1-686/postinst/old-dir-initrd-link-2.6.30-1-686: true
  linux-image-2.6.30-1-686/preinst/failed-to-move-modules-2.6.30-1-686:
  linux-image-2.6.30-1-686/postinst/bootloader-test-error-2.6.30-1-686:
  linux-image-2.6.30-1-686/preinst/abort-install-2.6.30-1-686:
  linux-image-2.6.30-1-686/postinst/bootloader-error-2.6.30-1-686:
  linux-image-2.6.30-1-686/preinst/initrd-2.6.30-1-686:
  linux-image-2.6.30-1-686/prerm/removing-running-kernel-2.6.30-1-686: true
  linux-image-2.6.30-1-686/postinst/kimage-is-a-directory:
  linux-image-2.6.30-1-686/preinst/abort-overwrite-2.6.30-1-686:
  linux-image-2.6.30-1-686/preinst/elilo-initrd-2.6.30-1-686: true
  linux-image-2.6.30-1-686/preinst/bootloader-initrd-2.6.30-1-686: true
  linux-image-2.6.30-1-686/postinst/depmod-error-initrd-2.6.30-1-686: false

Information forwarded to debian-bugs-dist@lists.debian.org, Debian Kernel Team <debian-kernel@lists.debian.org>:
Bug#536183; Package linux-image-2.6.30-1-686. (Mon, 03 Aug 2009 20:39:04 GMT) (full text, mbox, link).

Acknowledgement sent to Jarek Kamiński <jarek@vilo.eu.org>:
Extra info received and forwarded to list. Copy sent to Debian Kernel Team <debian-kernel@lists.debian.org>. (Mon, 03 Aug 2009 20:39:04 GMT) (full text, mbox, link).

Message #10 received at 536183@bugs.debian.org (full text, mbox, reply):

From: Jarek Kamiński <jarek@vilo.eu.org>
To: "Trent W. Buck" <trentbuck@gmail.com>, 536183@bugs.debian.org
Subject: Re: Bug#536183: Can't change CPU scaling governor after .29 to .30 upgrade.
Date: Mon, 3 Aug 2009 22:38:06 +0200
[Message part 1 (text/plain, inline)]
On Wed, Jul 08, 2009 at 12:16:58PM +1000, Trent W. Buck wrote:

Hi Trent.

> After upgrading from .29 to .30, I can no longer change my CPU
> frequency scaling governor:
> 
>     # cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors
>     ondemand performance
>     # printf ondemand >/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
>     # cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
>     performance
> 
> This is super annoying.  I am using an EeePC 701 with a Celeron CPU.
> 
> ** Kernel log:
> [   73.276680] ondemand governor failed, too long transition latency of HW, fallback to performance governor
> [  158.079576] ondemand governor failed, too long transition latency of HW, fallback to performance governor
> [ 2192.786164] ondemand governor failed, too long transition latency of HW, fallback to performance governor
> [ 2235.556866] ondemand governor failed, too long transition latency of HW, fallback to performance governor
> 
> ** Loaded modules:
> Module                  Size  Used by
> p4_clockmod             3948  0 
> speedstep_lib           4136  1 p4_clockmod

I'm also hit by this bug. I've found some information at
<http://bugs.archlinux.org/task/15284>:
| You should not use ondemand with clockmod. The clockmod module has
| a very high switching latency, that's why it's disabled in 2.6.30. The
| error message says it all I think.

Unfortunately p4-clockmod is the only driver working with my CPU
(Intel(R) Celeron(R) CPU 2.60GHz), but You have newer CPU, so maybe it's
worth trying other drivers.

Of course I see it as a regression, it would be nice, if it gets
fixed...

Jarek.

[signature.asc (application/pgp-signature, inline)]

Bug reassigned from package 'linux-image-2.6.30-1-686' to 'linux-2.6'. Request was from Martin Michlmayr <tbm@cyrius.com> to control@bugs.debian.org. (Mon, 12 Oct 2009 15:36:31 GMT) (full text, mbox, link).

Bug No longer marked as found in versions linux-2.6/2.6.30-1. Request was from Martin Michlmayr <tbm@cyrius.com> to control@bugs.debian.org. (Mon, 12 Oct 2009 15:36:33 GMT) (full text, mbox, link).

Information forwarded to debian-bugs-dist@lists.debian.org, Debian Kernel Team <debian-kernel@lists.debian.org>:
Bug#536183; Package linux-2.6. (Thu, 25 Feb 2010 18:30:07 GMT) (full text, mbox, link).

Acknowledgement sent to Moritz Muehlenhoff <jmm@inutil.org>:
Extra info received and forwarded to list. Copy sent to Debian Kernel Team <debian-kernel@lists.debian.org>. (Thu, 25 Feb 2010 18:30:07 GMT) (full text, mbox, link).

Message #19 received at 536183@bugs.debian.org (full text, mbox, reply):

From: Moritz Muehlenhoff <jmm@inutil.org>
To: "Trent W. Buck" <trentbuck@gmail.com>
Cc: 536183@bugs.debian.org, control@bugs.debian.org
Subject: Re: Can't change CPU scaling governor after .29 to .30 upgrade.
Date: Thu, 25 Feb 2010 19:27:43 +0100
tags 536183 moreinfo
thanks

On Wed, Jul 08, 2009 at 12:16:58PM +1000, Trent W. Buck wrote:
> Package: linux-image-2.6.30-1-686
> Version: 2.6.30-1
> Severity: normal
> 
> After upgrading from .29 to .30, I can no longer change my CPU
> frequency scaling governor:
> 
>     # cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors
>     ondemand performance
>     # printf ondemand >/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
>     # cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
>     performance
> 
> This is super annoying.  I am using an EeePC 701 with a Celeron CPU.

Hi,
The next release of Debian (6.0, code name Squeeze) will be based
on 2.6.32. Please test the current 2.6.32 from unstable/testing and tell
us whether the problem persists. If so, we should report it upstream
to the kernel.org developers.

The 2.6.32 kernel is available from packages.debian.org and can
be installed in both Debian stable, testing and unstable
installations.

Thanks,
        Moritz

Added tag(s) moreinfo. Request was from Moritz Muehlenhoff <jmm@inutil.org> to control@bugs.debian.org. (Thu, 25 Feb 2010 18:30:14 GMT) (full text, mbox, link).

Information forwarded to debian-bugs-dist@lists.debian.org, Debian Kernel Team <debian-kernel@lists.debian.org>:
Bug#536183; Package linux-2.6. (Thu, 25 Feb 2010 23:03:03 GMT) (full text, mbox, link).

Acknowledgement sent to "Trent W. Buck" <trentbuck@gmail.com>:
Extra info received and forwarded to list. Copy sent to Debian Kernel Team <debian-kernel@lists.debian.org>. (Thu, 25 Feb 2010 23:03:03 GMT) (full text, mbox, link).

Message #26 received at 536183@bugs.debian.org (full text, mbox, reply):

From: "Trent W. Buck" <trentbuck@gmail.com>
To: Moritz Muehlenhoff <jmm@inutil.org>
Cc: 536183@bugs.debian.org, control@bugs.debian.org
Subject: Re: Can't change CPU scaling governor after .29 to .30 upgrade.
Date: Fri, 26 Feb 2010 09:57:37 +1100
Moritz Muehlenhoff wrote:
>> After upgrading from .29 to .30, I can no longer change my CPU
>> frequency scaling governor: [...]
>
> The next release of Debian (6.0, code name Squeeze) will be based on
> 2.6.32. Please test the current 2.6.32 from unstable/testing and
> tell us whether the problem persists.

It does:

    # uname -a
    Linux Clio 2.6.32-trunk-686 #1 SMP Sun Jan 10 06:32:16 UTC 2010 i686 GNU/Linux
    # cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors
    ondemand performance
    # printf ondemand >/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
    # cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
    performance
    # dmesg | tail -1
    [38198.312686] ondemand governor failed, too long transition latency of HW, fallback to performance governor
    #

> If so, we should report it upstream to the kernel.org developers.

Do you need me to take further action, or can I leave that part to
you?

Information forwarded to debian-bugs-dist@lists.debian.org, Debian Kernel Team <debian-kernel@lists.debian.org>:
Bug#536183; Package linux-2.6. (Thu, 25 Feb 2010 23:06:02 GMT) (full text, mbox, link).

Acknowledgement sent to Moritz Muehlenhoff <jmm@inutil.org>:
Extra info received and forwarded to list. Copy sent to Debian Kernel Team <debian-kernel@lists.debian.org>. (Thu, 25 Feb 2010 23:06:03 GMT) (full text, mbox, link).

Message #31 received at 536183@bugs.debian.org (full text, mbox, reply):

From: Moritz Muehlenhoff <jmm@inutil.org>
To: "Trent W. Buck" <trentbuck@gmail.com>
Cc: 536183@bugs.debian.org
Subject: Re: Can't change CPU scaling governor after .29 to .30 upgrade.
Date: Fri, 26 Feb 2010 00:01:56 +0100
Hi Trent,

On Fri, Feb 26, 2010 at 09:57:37AM +1100, Trent W. Buck wrote:
> Moritz Muehlenhoff wrote:
> >> After upgrading from .29 to .30, I can no longer change my CPU
> >> frequency scaling governor: [...]
> >
> > The next release of Debian (6.0, code name Squeeze) will be based on
> > 2.6.32. Please test the current 2.6.32 from unstable/testing and
> > tell us whether the problem persists.
> 
> It does:
> 
>     # uname -a
>     Linux Clio 2.6.32-trunk-686 #1 SMP Sun Jan 10 06:32:16 UTC 2010 i686 GNU/Linux
>     # cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_governors
>     ondemand performance
>     # printf ondemand >/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
>     # cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
>     performance
>     # dmesg | tail -1
>     [38198.312686] ondemand governor failed, too long transition latency of HW, fallback to performance governor
>     #
> 
> > If so, we should report it upstream to the kernel.org developers.
> 
> Do you need me to take further action, or can I leave that part to
> you?
 
Please report this bug upstream at the upstream bugzilla
(http://bugzilla.kernel.org), so that it can be investigated/
fixed upstream and backported for Squeeze.

Once done, please add the bug number to this bug.

(We're asking you to file the bug report yourself, since the
kernel.org developers will have specific inquiries to your
hardware/setup)

Cheers,
        Moritz

Removed tag(s) moreinfo. Request was from Moritz Muehlenhoff <jmm@debian.org> to control@bugs.debian.org. (Thu, 25 Feb 2010 23:06:07 GMT) (full text, mbox, link).

Information forwarded to debian-bugs-dist@lists.debian.org, Debian Kernel Team <debian-kernel@lists.debian.org>:
Bug#536183; Package linux-2.6. (Thu, 25 Feb 2010 23:57:07 GMT) (full text, mbox, link).

Acknowledgement sent to Ben Hutchings <ben@decadent.org.uk>:
Extra info received and forwarded to list. Copy sent to Debian Kernel Team <debian-kernel@lists.debian.org>. (Thu, 25 Feb 2010 23:57:07 GMT) (full text, mbox, link).

Message #38 received at 536183@bugs.debian.org (full text, mbox, reply):

From: Ben Hutchings <ben@decadent.org.uk>
To: "Trent W. Buck" <trentbuck@gmail.com>
Cc: Moritz Muehlenhoff <jmm@inutil.org>, 536183@bugs.debian.org
Subject: Re: Bug#536183: Can't change CPU scaling governor after .29 to .30 upgrade.
Date: Thu, 25 Feb 2010 23:54:37 +0000
[Message part 1 (text/plain, inline)]
On Fri, 2010-02-26 at 00:01 +0100, Moritz Muehlenhoff wrote:
> Hi Trent,
> 
> On Fri, Feb 26, 2010 at 09:57:37AM +1100, Trent W. Buck wrote:
> > Moritz Muehlenhoff wrote:
> > >> After upgrading from .29 to .30, I can no longer change my CPU
> > >> frequency scaling governor: [...]
[...]
> > > If so, we should report it upstream to the kernel.org developers.
> > 
> > Do you need me to take further action, or can I leave that part to
> > you?
>  
> Please report this bug upstream at the upstream bugzilla
> (http://bugzilla.kernel.org), so that it can be investigated/
> fixed upstream and backported for Squeeze.

Also, you could try using acpi-cpufreq instead of p4-clockmod.  I don't
know whether it will work on this machine but it might do.

Ben.

-- 
Ben Hutchings
I'm always amazed by the number of people who take up solipsism because
they heard someone else explain it. - E*Borg on alt.fan.pratchett

[signature.asc (application/pgp-signature, inline)]

Information forwarded to debian-bugs-dist@lists.debian.org, Debian Kernel Team <debian-kernel@lists.debian.org>:
Bug#536183; Package linux-2.6. (Fri, 26 Feb 2010 00:03:02 GMT) (full text, mbox, link).

Acknowledgement sent to "Trent W. Buck" <twb@cybersource.com.au>:
Extra info received and forwarded to list. Copy sent to Debian Kernel Team <debian-kernel@lists.debian.org>. (Fri, 26 Feb 2010 00:03:03 GMT) (full text, mbox, link).

Message #43 received at 536183@bugs.debian.org (full text, mbox, reply):

From: "Trent W. Buck" <twb@cybersource.com.au>
To: Ben Hutchings <ben@decadent.org.uk>
Cc: Moritz Muehlenhoff <jmm@inutil.org>, 536183@bugs.debian.org
Subject: Re: Bug#536183: Can't change CPU scaling governor after .29 to .30 upgrade.
Date: Fri, 26 Feb 2010 10:59:56 +1100
Ben Hutchings wrote:
> Also, you could try using acpi-cpufreq instead of p4-clockmod.  I
> don't know whether it will work on this machine but it might do.

# modprobe acpi-cpufreq
FATAL: Error inserting acpi_cpufreq (/lib/modules/2.6.32-trunk-686/kernel/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.ko): No such device

Information forwarded to debian-bugs-dist@lists.debian.org, Debian Kernel Team <debian-kernel@lists.debian.org>:
Bug#536183; Package linux-2.6. (Fri, 26 Feb 2010 13:42:03 GMT) (full text, mbox, link).

Acknowledgement sent to Bastian Blank <waldi@debian.org>:
Extra info received and forwarded to list. Copy sent to Debian Kernel Team <debian-kernel@lists.debian.org>. (Fri, 26 Feb 2010 13:42:03 GMT) (full text, mbox, link).

Message #48 received at 536183@bugs.debian.org (full text, mbox, reply):

From: Bastian Blank <waldi@debian.org>
To: "Trent W. Buck" <trentbuck@gmail.com>, 536183@bugs.debian.org
Cc: Moritz Muehlenhoff <jmm@inutil.org>
Subject: Re: Bug#536183: Can't change CPU scaling governor after .29 to .30 upgrade.
Date: Fri, 26 Feb 2010 14:40:22 +0100
On Fri, Feb 26, 2010 at 09:57:37AM +1100, Trent W. Buck wrote:
>     # printf ondemand >/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor

It should give an error here.

>     # dmesg | tail -1
>     [38198.312686] ondemand governor failed, too long transition latency of HW, fallback to performance governor

But now it is clear that the behaviour otherwise is correct. If the
hardware is not capable to do something, it is no software bug.

Bastian

-- 
Each kiss is as the first.
		-- Miramanee, Kirk's wife, "The Paradise Syndrome",
		   stardate 4842.6

Information forwarded to debian-bugs-dist@lists.debian.org, Debian Kernel Team <debian-kernel@lists.debian.org>:
Bug#536183; Package linux-2.6. (Fri, 26 Feb 2010 16:42:08 GMT) (full text, mbox, link).

Acknowledgement sent to "Trent W. Buck" <trentbuck@gmail.com>:
Extra info received and forwarded to list. Copy sent to Debian Kernel Team <debian-kernel@lists.debian.org>. (Fri, 26 Feb 2010 16:42:09 GMT) (full text, mbox, link).

Message #53 received at 536183@bugs.debian.org (full text, mbox, reply):

From: "Trent W. Buck" <trentbuck@gmail.com>
To: Bastian Blank <waldi@debian.org>
Cc: 536183@bugs.debian.org, Moritz Muehlenhoff <jmm@inutil.org>
Subject: Re: Bug#536183: Can't change CPU scaling governor after .29 to .30 upgrade.
Date: Sat, 27 Feb 2010 03:39:53 +1100
Bastian Blank wrote:
> On Fri, Feb 26, 2010 at 09:57:37AM +1100, Trent W. Buck wrote:
>>     # printf ondemand >/sys/devices/system/cpu/cpu0/cpufreq/scaling_governor
>
> It should give an error here.
>
>>     # dmesg | tail -1
>>     [38198.312686] ondemand governor failed, too long transition latency of HW, fallback to performance governor
>
> But now it is clear that the behaviour otherwise is correct. If the
> hardware is not capable to do something, it is no software bug.

The hardware didn't change; the kernel did.  Either the kernel was
wrong to permit on-demand frequency scaling before, or it's wrong to
refuse it now.

Information forwarded to debian-bugs-dist@lists.debian.org, Debian Kernel Team <debian-kernel@lists.debian.org>:
Bug#536183; Package linux-2.6. (Fri, 26 Feb 2010 18:15:06 GMT) (full text, mbox, link).

Acknowledgement sent to Bastian Blank <waldi@debian.org>:
Extra info received and forwarded to list. Copy sent to Debian Kernel Team <debian-kernel@lists.debian.org>. (Fri, 26 Feb 2010 18:15:06 GMT) (full text, mbox, link).

Message #58 received at 536183@bugs.debian.org (full text, mbox, reply):

From: Bastian Blank <waldi@debian.org>
To: "Trent W. Buck" <trentbuck@gmail.com>, 536183@bugs.debian.org
Cc: Moritz Muehlenhoff <jmm@inutil.org>
Subject: Re: Bug#536183: Can't change CPU scaling governor after .29 to .30 upgrade.
Date: Fri, 26 Feb 2010 19:11:57 +0100
On Sat, Feb 27, 2010 at 03:39:53AM +1100, Trent W. Buck wrote:
> Bastian Blank wrote:
> >>     [38198.312686] ondemand governor failed, too long transition latency of HW, fallback to performance governor
> > But now it is clear that the behaviour otherwise is correct. If the
> > hardware is not capable to do something, it is no software bug.
> The hardware didn't change; the kernel did.  Either the kernel was
> wrong to permit on-demand frequency scaling before, or it's wrong to
> refuse it now.

The kernel was wrong before.

Bastian

-- 
If I can have honesty, it's easier to overlook mistakes.
		-- Kirk, "Space Seed", stardate 3141.9

Reply sent to Moritz Muehlenhoff <jmm@inutil.org>:
You have taken responsibility. (Sun, 30 May 2010 12:47:03 GMT) (full text, mbox, link).

Notification sent to "Trent W. Buck" <trentbuck@gmail.com>:
Bug acknowledged by developer. (Sun, 30 May 2010 12:47:03 GMT) (full text, mbox, link).

Message #63 received at 536183-done@bugs.debian.org (full text, mbox, reply):

From: Moritz Muehlenhoff <jmm@inutil.org>
To: Bastian Blank <waldi@debian.org>
Cc: "Trent W. Buck" <trentbuck@gmail.com>, 536183-done@bugs.debian.org
Subject: Re: Bug#536183: Can't change CPU scaling governor after .29 to .30 upgrade.
Date: Sun, 30 May 2010 14:45:38 +0200
On Fri, Feb 26, 2010 at 07:11:57PM +0100, Bastian Blank wrote:
> On Sat, Feb 27, 2010 at 03:39:53AM +1100, Trent W. Buck wrote:
> > Bastian Blank wrote:
> > >>     [38198.312686] ondemand governor failed, too long transition latency of HW, fallback to performance governor
> > > But now it is clear that the behaviour otherwise is correct. If the
> > > hardware is not capable to do something, it is no software bug.
> > The hardware didn't change; the kernel did.  Either the kernel was
> > wrong to permit on-demand frequency scaling before, or it's wrong to
> > refuse it now.
> 
> The kernel was wrong before.

Closing the bug.

Cheers,
        Moritz

Bug archived. Request was from Debbugs Internal Request <owner@bugs.debian.org> to internal_control@bugs.debian.org. (Mon, 28 Jun 2010 07:40:28 GMT) (full text, mbox, link).

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Debian bug tracking system administrator <owner@bugs.debian.org>. Last modified: Tue Jul 23 12:48:18 2024; Machine Name: bembo

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