Debian Bug report logs - #838462
xorg crashes when input device removed during suspend

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

From: Frederik Möllers <fred-public@posteo.de>

To: Debian Bug Tracking System <submit@bugs.debian.org>

Subject: light-locker: X crashes when attaching/removing displays while locked

Date: Wed, 21 Sep 2016 12:01:48 +0200

Package: light-locker
Version: 1.7.0-3
Severity: important

Dear Maintainer,

ever since my Debian installations swapped xscreensaver for light-locker, my X
server crashes when attaching or removing displays while the desktop is locked.

Reproducing the bug works as follows:
1. Lock the screen using light-locker. I don't know if this affects the
behaviour, but I use XFCE as my desktop manager.
2. Attach or remove an attached display while the screen is locked. I regularly
plug my laptop into its docking station or remove it from there with the lid
closed.
3. Unlock the display by entering username and password in the light-locker
dialog.
4. The X server crashes and a new desktop session is started. All programs
previously running on the old X server are killed. Note: The X server only
crashes when unlocking. As long as the desktop is still locked, you can add or
remove displays as you please. However, once you unlock it and the number of
displays is different than when the display was being locked, X crashes.

A workaround is to only attach or remove displays while the desktop is
unlocked.

I will try to gather more information on where exactly things go wrong, but
maybe other people are affected as well and can add their experience here.



-- System Information:
Debian Release: stretch/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.6.0-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_GB.utf8, LC_CTYPE=en_GB.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages light-locker depends on:
ii  dconf-gsettings-backend [gsettings-backend]  0.26.0-1
ii  libc6                                        2.23-5
ii  libcairo2                                    1.14.6-1+b1
ii  libdbus-1-3                                  1.10.10-1
ii  libdbus-glib-1-2                             0.108-1
ii  libglib2.0-0                                 2.49.6-1
ii  libgtk-3-0                                   3.21.5-3
ii  libpango-1.0-0                               1.40.2-1
ii  libpangocairo-1.0-0                          1.40.2-1
ii  libsystemd0                                  231-4
ii  libx11-6                                     2:1.6.3-1
ii  libxext6                                     2:1.3.3-1
ii  libxss1                                      1:1.2.2-1
ii  lightdm                                      1.18.2-2

light-locker recommends no packages.

light-locker suggests no packages.

-- no debconf information

Message #10 received at 838462@bugs.debian.org (full text, mbox, reply):

From: Yves-Alexis Perez <corsac@debian.org>

To: Frederik Möllers <fred-public@posteo.de>, 838462@bugs.debian.org

Subject: Re: [Pkg-xfce-devel] Bug#838462: light-locker: X crashes when attaching/removing displays while locked

Date: Fri, 23 Sep 2016 09:17:12 +0200

[Message part 1 (text/plain, inline)]

On mer., 2016-09-21 at 12:01 +0200, Frederik Möllers wrote:
> I will try to gather more information on where exactly things go wrong, but
> maybe other people are affected as well and can add their experience here.

It's likely to be related to the vt-switch. If you have an intel card, try to
use the modesetting driver instead of the xserver-xorg-video-intel one (just
removing the package is enough, I think).

Regards,
-- 
Yves-Alexis

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

Message #15 received at 838462@bugs.debian.org (full text, mbox, reply):

From: Frederik Möllers <frederikmoellers@posteo.de>

To: 838462@bugs.debian.org

Subject: Re: [Pkg-xfce-devel] Bug#838462: light-locker: X crashes when attaching/removing displays while locked

Date: Thu, 24 Nov 2016 17:30:05 +0100

On 23/09/16 09:17, Yves-Alexis Perez wrote:
> If you have an intel card, try to use the modesetting driver instead
> of the xserver-xorg-video-intel one (just removing the package is
> enough, I think).

I tried that, but the error persists. Checking the X log gave some new
information, though:

[   316.532] (II) AIGLX: Suspending AIGLX clients for VT switch
[   331.694] (II) config/udev: Adding input device Logitech USB Laser Mouse (/dev/input/mouse2)
[   331.695] (II) No input driver specified, ignoring this device.
[   331.695] (II) This device may have been added with another device file.
[   331.727] (II) config/udev: Adding input device Logitech USB Keyboard (/dev/input/event19)
[   331.727] (**) Logitech USB Keyboard: Applying InputClass "evdev keyboard catchall"
[   331.727] (**) Logitech USB Keyboard: Applying InputClass "libinput keyboard catchall"
[   331.727] (II) Using input driver 'libinput' for 'Logitech USB Keyboard'
[   331.727] (**) Logitech USB Keyboard: always reports core events
[   331.727] (**) Option "Device" "/dev/input/event19"
[   331.727] (**) Option "_source" "server/udev"
[   331.728] (II) input device 'Logitech USB Keyboard', /dev/input/event19 is tagged by udev as: Keyboard
[   331.728] (II) input device 'Logitech USB Keyboard', /dev/input/event19 is a keyboard
[   331.748] (II) libinput: Logitech USB Keyboard: needs a virtual subdevice
[   331.748] (**) Option "config_info" "udev:/sys/devices/pci0000:00/0000:00:14.0/usb2/2-3/2-3.4/2-3.4.2/2-3.4.2:1.1/0003:046D:C328.0003/input/input20/event19"
[   331.748] (II) XINPUT: Adding extended input device "Logitech USB Keyboard" (type: MOUSE, id 14)
[   331.748] (**) Option "AccelerationScheme" "none"
[   331.749] (**) Logitech USB Keyboard: (accel) selected scheme none/0
[   331.749] (**) Logitech USB Keyboard: (accel) acceleration factor: 2.000
[   331.749] (**) Logitech USB Keyboard: (accel) acceleration threshold: 4
[   331.749] (**) Logitech USB Keyboard: Applying InputClass "evdev keyboard catchall"
[   331.749] (**) Logitech USB Keyboard: Applying InputClass "libinput keyboard catchall"
[   331.749] (II) Using input driver 'libinput' for 'Logitech USB Keyboard'
[   331.749] (**) Logitech USB Keyboard: always reports core events
[   331.749] (**) Option "Device" "/dev/input/event19"
[   331.749] (**) Option "_source" "_driver/libinput"
[   331.749] (II) libinput: Logitech USB Keyboard: is a virtual subdevice
[   331.749] (EE)
[   331.749] (EE) Backtrace:
[   331.749] (EE) 0: /usr/lib/xorg/Xorg (xorg_backtrace+0x4a) [0x562dd5a8401a]
[   331.749] (EE) 1: /usr/lib/xorg/Xorg (0x562dd58ca000+0x1be389) [0x562dd5a88389]
[   331.749] (EE) 2: /lib/x86_64-linux-gnu/libc.so.6 (0x7f874b5a5000+0x33040) [0x7f874b5d8040]
[   331.749] (EE) 3: /usr/lib/x86_64-linux-gnu/libinput.so.10 (libinput_device_config_tap_get_finger_count+0x0) [0x7f8747122440]
[   331.749] (EE) 4: /usr/lib/xorg/modules/input/libinput_drv.so (0x7f8747370000+0x83ae) [0x7f87473783ae]
[   331.749] (EE) 5: /usr/lib/xorg/Xorg (0x562dd58ca000+0xa4202) [0x562dd596e202]
[   331.749] (EE) 6: /usr/lib/xorg/modules/input/libinput_drv.so (0x7f8747370000+0x67af) [0x7f87473767af]
[   331.749] (EE) 7: /usr/lib/xorg/Xorg (ProcessWorkQueue+0x21) [0x562dd5922ee1]
[   331.749] (EE) 8: /usr/lib/xorg/Xorg (WaitForSomething+0xac) [0x562dd5a80c3c]
[   331.749] (EE) 9: /usr/lib/xorg/Xorg (0x562dd58ca000+0x53e9e) [0x562dd591de9e]
[   331.749] (EE) 10: /usr/lib/xorg/Xorg (0x562dd58ca000+0x58073) [0x562dd5922073]
[   331.749] (EE) 11: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xf1) [0x7f874b5c52b1]
[   331.749] (EE) 12: /usr/lib/xorg/Xorg (_start+0x2a) [0x562dd590bfea]
[   331.749] (EE)
[   331.749] (EE) Segmentation fault at address 0x40
[   331.749] (EE)
Fatal server error:
[   331.749] (EE) Caught signal 11 (Segmentation fault). Server aborting
[   331.749] (EE)
[   331.749] (EE)
Please consult the The X.Org Foundation support
     at http://wiki.x.org
 for help.
[   331.749] (EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information.
[   331.749] (EE)
[   331.749] (EE) Server terminated with error (1). Closing log file.

It seems the error is related to the X input library rather than any
video drivers. I have confirmed that the X server does not crash if I
plug my mouse and keyboard out of my dock.
Sorry for the wrong assignment. Could you reassign the bug to the
xserver-xorg-input-libinput package? Or should I just file a new report
there?

Best,
Frederik

Message #20 received at 838462@bugs.debian.org (full text, mbox, reply):

From: Yves-Alexis Perez <corsac@debian.org>

To: Frederik Möllers <frederikmoellers@posteo.de>, 838462@bugs.debian.org

Subject: Re: [Pkg-xfce-devel] Bug#838462: Bug#838462: light-locker: X crashes when attaching/removing displays while locked

Date: Thu, 24 Nov 2016 21:53:51 +0100

[Message part 1 (text/plain, inline)]

On Thu, 2016-11-24 at 17:30 +0100, Frederik Möllers wrote:
> It seems the error is related to the X input library rather than any
> video drivers. I have confirmed that the X server does not crash if I
> plug my mouse and keyboard out of my dock.
> Sorry for the wrong assignment. Could you reassign the bug to the
> xserver-xorg-input-libinput package? Or should I just file a new report
> there?

You can reassign the bug yourself, see bugs.debian.org and especially the mail
interface documentation.

Regards,
-- 
Yves-Alexis

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

Message #25 received at 838462@bugs.debian.org (full text, mbox, reply):

From: Hans-Christoph Steiner <hans@eds.org>

To: 838462@bugs.debian.org

Subject: same crash

Date: Tue, 9 May 2017 20:34:49 +0200

Control: reassign -1 xserver-xorg-input-libinput 0.18-1
Control: retitle -1 xorg crashes when input device removed during suspend

Looks like its this bug:
https://bugs.freedesktop.org/show_bug.cgi?id=97117

I'm getting this same crash on ElementaryOS Loki (based on Ubuntu 16.04)
with light-locker 1.7.0-2ubuntu1 and xserver-xorg-input-libinput
0.18.0-1.  It is on a Dell m3800 with dual Intel/nVidia graphics setup
with bumblebee and nouveau.  I'm pretty sure it happens when I put the
laptop to sleep with the external mouse plugged in, then I wake up the
laptop without that mouse plugged in.  I happens right after I log into
the lock screen.


[  8894.710] (II) config/udev: removing device Yubico Yubikey NEO OTP+CCID
[  8894.721] (II) UnloadModule: "libinput"
[  8924.009] (II) config/udev: removing device Microsoft Comfort Mouse 3000
[  8924.009] (II) UnloadModule: "libinput"
[  8924.009] (II) config/udev: removing device Microsoft Comfort Mouse 3000
[  8924.024] (II) UnloadModule: "libinput"
[  8942.192] (II) AIGLX: Suspending AIGLX clients for VT switch
[  8944.824] (II) config/udev: Adding input device Microsoft Comfort
Mouse 3000 (/dev/input/mouse0)
[  8944.824] (II) No input driver specified, ignoring this device.
[  8944.824] (II) This device may have been added with another device file.
[  8944.881] (II) config/udev: Adding input device Microsoft Comfort
Mouse 3000 (/dev/input/event6)
[  8944.881] (**) Microsoft Comfort Mouse 3000: Applying InputClass
"evdev pointer catchall"
[  8944.881] (**) Microsoft Comfort Mouse 3000: Applying InputClass
"evdev keyboard catchall"
[  8944.881] (**) Microsoft Comfort Mouse 3000: Applying InputClass
"libinput pointer catchall"
[  8944.881] (**) Microsoft Comfort Mouse 3000: Applying InputClass
"libinput keyboard catchall"
[  8944.881] (II) Using input driver 'libinput' for 'Microsoft Comfort
Mouse 3000'
[  8944.881] (**) Microsoft Comfort Mouse 3000: always reports core events
[  8944.881] (**) Option "Device" "/dev/input/event6"
[  8944.881] (**) Option "_source" "server/udev"
[  8944.882] (II) input device 'Microsoft Comfort Mouse 3000',
/dev/input/event6 is tagged by udev as: Keyboard Mouse
[  8944.882] (II) input device 'Microsoft Comfort Mouse 3000',
/dev/input/event6 is a pointer caps
[  8944.882] (II) input device 'Microsoft Comfort Mouse 3000',
/dev/input/event6 is a keyboard
[  8944.896] (II) libinput: Microsoft Comfort Mouse 3000: needs a
virtual subdevice
[  8944.896] (**) Option "config_info"
"udev:/sys/devices/pci0000:00/0000:00:14.0/usb3/3-3/3-3.3/3-3.3:1.0/0003:045E:077B.0004/input/input19/event6"
[  8944.896] (II) XINPUT: Adding extended input device "Microsoft
Comfort Mouse 3000" (type: MOUSE, id 11)
[  8944.896] (**) Option "AccelerationScheme" "none"
[  8944.896] (**) Microsoft Comfort Mouse 3000: (accel) selected scheme
none/0
[  8944.896] (**) Microsoft Comfort Mouse 3000: (accel) acceleration
factor: 2.000
[  8944.896] (**) Microsoft Comfort Mouse 3000: (accel) acceleration
threshold: 4
[  8944.896] (**) Microsoft Comfort Mouse 3000: Applying InputClass
"evdev pointer catchall"
[  8944.896] (**) Microsoft Comfort Mouse 3000: Applying InputClass
"evdev keyboard catchall"
[  8944.896] (**) Microsoft Comfort Mouse 3000: Applying InputClass
"libinput pointer catchall"
[  8944.896] (**) Microsoft Comfort Mouse 3000: Applying InputClass
"libinput keyboard catchall"
[  8944.896] (II) Using input driver 'libinput' for 'Microsoft Comfort
Mouse 3000'
[  8944.896] (**) Microsoft Comfort Mouse 3000: always reports core events
[  8944.896] (**) Option "Device" "/dev/input/event6"
[  8944.896] (**) Option "_source" "_driver/libinput"
[  8944.896] (II) libinput: Microsoft Comfort Mouse 3000: is a virtual
subdevice
[  8944.896] (EE)
[  8944.896] (EE) Backtrace:
[  8944.896] (EE) 0: /usr/lib/xorg/Xorg (xorg_backtrace+0x4e)
[0x562060e51ade]
[  8944.896] (EE) 1: /usr/lib/xorg/Xorg (0x562060c9f000+0x1b6e69)
[0x562060e55e69]
[  8944.896] (EE) 2: /lib/x86_64-linux-gnu/libc.so.6
(0x7fba0d806000+0x354b0) [0x7fba0d83b4b0]
[  8944.896] (EE) 3: /usr/lib/x86_64-linux-gnu/libinput.so.10
(libinput_device_config_tap_get_finger_count+0x0) [0x7fba06139b00]
[  8944.896] (EE) 4: /usr/lib/xorg/modules/input/libinput_drv.so
(0x7fba06359000+0x6953) [0x7fba0635f953]
[  8944.896] (EE) 5: /usr/lib/xorg/Xorg (0x562060c9f000+0xa2998)
[0x562060d41998]
[  8944.896] (EE) 6: /usr/lib/xorg/modules/input/libinput_drv.so
(0x7fba06359000+0x55e7) [0x7fba0635e5e7]
[  8944.897] (EE) 7: /usr/lib/xorg/modules/input/libinput_drv.so
(0x7fba06359000+0x582c) [0x7fba0635e82c]
[  8944.897] (EE) 8: /usr/lib/xorg/Xorg (ProcessWorkQueue+0x21)
[0x562060cf7c71]
[  8944.897] (EE) 9: /usr/lib/xorg/Xorg (WaitForSomething+0xad)
[0x562060e4e6dd]
[  8944.897] (EE) 10: /usr/lib/xorg/Xorg (0x562060c9f000+0x53b8e)
[0x562060cf2b8e]
[  8944.897] (EE) 11: /usr/lib/xorg/Xorg (0x562060c9f000+0x57dd3)
[0x562060cf6dd3]
[  8944.897] (EE) 12: /lib/x86_64-linux-gnu/libc.so.6
(__libc_start_main+0xf0) [0x7fba0d826830]
[  8944.897] (EE) 13: /usr/lib/xorg/Xorg (_start+0x29) [0x562060ce1049]
[  8944.897] (EE)
[  8944.897] (EE) Segmentation fault at address 0x40
[  8944.897] (EE)
Fatal server error:
[  8944.897] (EE) Caught signal 11 (Segmentation fault). Server aborting

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