Debian Bug report logs - #792321
Segfaults on session start

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

From: Didier 'OdyX' Raboud <odyx@debian.org>

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

Subject: Segfaults on session start

Date: Tue, 14 Jul 2015 00:10:03 +0200

Package: libkf5screen6
Version: 4:5.3.2-1
Severity: serious

Hi,

I can't open my second session (uid 1001, if that matters), now that my
external screen isn't connected anymore. On session opening, I get multiple
segfaults, starting with kscreen_backend and KSC_XRandR:

Jul 14 00:00:29 gyllingar kernel: [15295.632381] kscreen_backend[17452]: segfault at 10 ip 00007fa54b5acbd0 sp 00007ffff8cd5a68 error 4 in KSC_XRandR.so[7fa54b597000+22000]
Jul 14 00:00:29 gyllingar kernel: [15295.714059] ksplashqml[17403]: segfault at 8 ip 00007f6afd3ca5a0 sp 00007ffea7fbabb8 error 4 in libQt5Gui.so.5.4.2[7f6afd2b8000+52c000]
Jul 14 00:00:29 gyllingar kernel: [15295.714183] kactivitymanage[17446]: segfault at 18 ip 00007fb269e88910 sp 00007fffbdd7bf18 error 4 in libqxcb.so[7fb269e59000+ba000]

I tried to remove some configuration files, but the session still doesn't
start.

Of course, I'm willing to help debugging this, but I don't know where to
start.

Cheers,

OdyX

-- System Information:
Debian Release: stretch/sid
  APT prefers testing-proposed-updates
  APT policy: (500, 'testing-proposed-updates'), (500, 'proposed-updates'), (500, 'buildd-unstable'), (500, 'unstable'), (500, 'testing'), (500, 'stable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.0.0-2-amd64 (SMP w/4 CPU cores)
Locale: LANG=fr_CH.UTF-8, LC_CTYPE=fr_CH.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages libkf5screen6 depends on:
ii  libc6             2.19-19
ii  libqt5core5a      5.4.2+dfsg-4
ii  libqt5dbus5       5.4.2+dfsg-4
ii  libqt5gui5        5.4.2+dfsg-4
ii  libqt5x11extras5  5.4.2-2
ii  libstdc++6        5.1.1-14
ii  libxcb-randr0     1.10-3+b1
ii  libxcb1           1.10-3+b1

libkf5screen6 recommends no packages.

libkf5screen6 suggests no packages.

-- no debconf information

Message #10 received at 792321@bugs.debian.org (full text, mbox, reply):

From: Didier 'OdyX' Raboud <odyx@debian.org>

To: 792321@bugs.debian.org

Subject: Re: Segfaults on session start

Date: Tue, 14 Jul 2015 18:15:25 +0200

Le mardi, 14 juillet 2015, 00.10:03 Didier 'OdyX' Raboud a écrit :
> I can't open my second session (uid 1001, if that matters), now that
> my external screen isn't connected anymore. On session opening, I get
> multiple segfaults, starting with kscreen_backend and KSC_XRandR:

I managed to get my session started by deleting the users' 
.local/share/kscreen, if that helps someone else!

Cheers,
OdyX

Message #15 received at 792321@bugs.debian.org (full text, mbox, reply):

From: Scott Kitterman <debian@kitterman.com>

To: Didier 'OdyX' Raboud <odyx@debian.org>

Cc: 792321@bugs.debian.org

Subject: Re: Bug#792321: Segfaults on session start

Date: Tue, 14 Jul 2015 16:04:54 -0400

On Tuesday, July 14, 2015 06:15:25 PM Didier 'OdyX' Raboud wrote:
> Le mardi, 14 juillet 2015, 00.10:03 Didier 'OdyX' Raboud a écrit :
> > I can't open my second session (uid 1001, if that matters), now that
> > my external screen isn't connected anymore. On session opening, I get
> 
> > multiple segfaults, starting with kscreen_backend and KSC_XRandR:
> I managed to get my session started by deleting the users'
> .local/share/kscreen, if that helps someone else!

You didn't happen to save the old one?  If you did, it might be useful to diff 
it to the new one.

Scott K

Message #20 received at 792321@bugs.debian.org (full text, mbox, reply):

From: Didier 'OdyX' Raboud <odyx@debian.org>

To: Scott Kitterman <debian@kitterman.com>

Cc: 792321@bugs.debian.org

Subject: Re: Bug#792321: Segfaults on session start

Date: Tue, 14 Jul 2015 22:24:54 +0200

Le mardi, 14 juillet 2015 16.04:54, vous avez écrit :
> On Tuesday, July 14, 2015 06:15:25 PM Didier 'OdyX' Raboud wrote:
> > Le mardi, 14 juillet 2015, 00.10:03 Didier 'OdyX' Raboud a écrit :
> > > I can't open my second session (uid 1001, if that matters), now
> > > that
> > > my external screen isn't connected anymore. On session opening, I
> > > get
> > 
> > > multiple segfaults, starting with kscreen_backend and KSC_XRandR:
> > I managed to get my session started by deleting the users'
> > .local/share/kscreen, if that helps someone else!
> 
> You didn't happen to save the old one?  If you did, it might be useful
> to diff it to the new one.

I didn't. :/ Actually, after launching the 'rm', I immediately had that 
thought.

Sorry…
OdyX

Message #25 received at 792321@bugs.debian.org (full text, mbox, reply):

From: Diane Trout <diane@ghic.org>

To: 792321@bugs.debian.org

Subject: a clue about the crash.

Date: Mon, 03 Aug 2015 21:56:38 -0700

Hello,

as I encountered this bug and read the workaround and the suggestion to save 
the kscreen configuration before applying it I was able to get a diff of a 
kscreen file that was causing a crash..


@@ -1,17 +1,24 @@
 [
     {
-        "enabled": false,
+        "enabled": true,
         "id": "56a261ac023a91a83de96bf5cb585786",
         "metadata": {
             "fullname": "xrandr-unknown",
             "name": "LVDS1"
         },
+        "mode": {
+            "refresh": 60.018642425537109,
+            "size": {
+                "height": 768,
+                "width": 1366
+            }
+        },
         "pos": {
             "x": 0,
             "y": 0
         },
-        "primary": false,
+        "primary": true,
         "rotation": 1
     },
     {
         "enabled": true,


I have another kscreen configuration that was regenerated after I got home, 
and that one had the mode section in both versions.

Diane

Message #30 received at 792321@bugs.debian.org (full text, mbox, reply):

From: Diego Gomez <diego@dgomez.com.ar>

To: 792321@bugs.debian.org

Subject: Segfaults on session start

Date: Sat, 22 Aug 2015 15:28:26 -0300

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

Same situation here. Even removing the directories: .kde, .local and
.config (entirely) doesn't help.

I get:
kactivitymanage segfault at 7fb3000c3cd0 ip 00007fb2f002e031 sp
00007ffe4f1f29e8 error 4 in libQt5Sql.so.5.4.2[7fb2f001a000+3f000]

--
Diego.-

[Message part 2 (text/html, inline)]

Message #35 received at 792321@bugs.debian.org (full text, mbox, reply):

From: Johan Thelin <e8johan@gmail.com>

To: 792321@bugs.debian.org

Subject: Segfaults on session start

Date: Wed, 13 Jan 2016 11:41:35 +0100

I experienced the same issue now and removed .local/share/kscreen. I
diffed the old and new versions and got the following:

e8johan@e8xps:~/.local/share$ diff kscreen kscreen.old/
Only in kscreen.old/: 38190874a59ba403b4d89e66b38cb1c4
Only in kscreen.old/: 49119e58c49c2ba7810bd3bd0d886fe9
Only in kscreen.old/: 4a528cc44dde607d8f1702766a1ef355
Only in kscreen.old/: 53ed81ff261fc3e226b33042e113fe17
diff kscreen/5f21808d100770b15a3193a13df13e1a
kscreen.old/5f21808d100770b15a3193a13df13e1a
17,18c17,18
<             "x": 0,
<             "y": 0
---
>             "x": 2560,
>             "y": 520
20c20
<         "primary": true,
---
>         "primary": false,
Only in kscreen.old/: 5f2ef157575fb56df36fb714ed92e51b
Only in kscreen.old/: 66e87988a5f5e24cd3141742aeb1214a
Only in kscreen.old/: 7d3554797bcb848dc0db9ebcd599e7d1
Only in kscreen.old/: 8c954a037535ab8e8ff15144ce1fc2f1
Only in kscreen.old/: 93ccf39591079a60505a6d3a74797050
Only in kscreen.old/: 9e55c5c627abe19073ebe3b2a48d5d86
Only in kscreen.old/: ca0f1edbab7b021b314b3f4b55512cb5

As you can see, the position of the screen has somehow been messed up
when I unplugged my external screen, resulting in a blank screen when
entering a new session (after a reboot).

Best regards,

Johan Thelin

Message #40 received at 792321@bugs.debian.org (full text, mbox, reply):

From: franczak.mariola@pwszzamosc.pl

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Message #51 received at 792321@bugs.debian.org (full text, mbox, reply):

From: Lisandro Damián Nicanor Pérez Meyer <perezmeyer@gmail.com>

To: 792321@bugs.debian.org

Cc: odyx@debian.org, debian@kitterman.com, Diane Trout <diane@ghic.org>, diego@dgomez.com.ar, e8johan@gmail.com

Subject: Bug followup

Date: Wed, 05 Apr 2017 09:29:25 -0300

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

tag 792321 moreinfo
thanks

As of version 4:5.8.6-1 (even possibly before) I can't find this issue 
anymore. Is some of you still able to reproduce it?

We do have a workaround for this so maybe this should become important, but it 
would be better if we can close it.

If I have no replies in ~4 days I'll close the bug. Of course feel free to 
reopen it later if you still can find it.

Bug triagers: if you find this bug open in more than 4 days from now feel free 
to close it with version 4:5.8.6-1.

-- 
Sólo porque un mensaje pueda no ser recibido no implica que no
valga la pena enviarlo.

Lisandro Damián Nicanor Pérez Meyer
http://perezmeyer.com.ar/
http://perezmeyer.blogspot.com/

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

Message #58 received at 792321-done@bugs.debian.org (full text, mbox, reply):

From: Didier 'OdyX' Raboud <odyx@debian.org>

To: Lisandro Damián Nicanor Pérez Meyer <perezmeyer@gmail.com>

Cc: 792321-done@bugs.debian.org, debian@kitterman.com, Diane Trout <diane@ghic.org>, diego@dgomez.com.ar, e8johan@gmail.com

Subject: Re: Bug followup

Date: Wed, 05 Apr 2017 20:48:39 +0200

Hi there,

I can't reproduce this bug; hereby closing then; thanks for the followup !

Le mercredi, 5 avril 2017, 09.29:25 h CEST Lisandro  écrit :
> As of version 4:5.8.6-1 (even possibly before) I can't find this issue
> anymore. Is some of you still able to reproduce it?
> 
> We do have a workaround for this so maybe this should become important, but
> it would be better if we can close it.

Cheers,
-- 
    OdyX

Message #63 received at 792321@bugs.debian.org (full text, mbox, reply):

From: Diego Gomez <diego@dgomez.com.ar>

To: Lisandro Damián Nicanor Pérez Meyer <perezmeyer@gmail.com>

Cc: 792321@bugs.debian.org, odyx@debian.org, debian@kitterman.com, Diane Trout <diane@ghic.org>, e8johan@gmail.com

Subject: Re: Bug followup

Date: Wed, 5 Apr 2017 16:16:30 -0300

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

I can't reproduce it anymore.
I think it's safe to close this.

Regards.

--
Diego.-

PGP:
Keyserver: pgp.mit.edu
Key Id: 4C9582F9
Fingerprint: 5FA9 0673 0870 7855 50CF  FD6E 9433 CBDC 4C95 82F9

On Wed, Apr 5, 2017 at 9:29 AM, Lisandro Damián Nicanor Pérez Meyer <
perezmeyer@gmail.com> wrote:

> tag 792321 moreinfo
> thanks
>
> As of version 4:5.8.6-1 (even possibly before) I can't find this issue
> anymore. Is some of you still able to reproduce it?
>
> We do have a workaround for this so maybe this should become important,
> but it
> would be better if we can close it.
>
> If I have no replies in ~4 days I'll close the bug. Of course feel free to
> reopen it later if you still can find it.
>
> Bug triagers: if you find this bug open in more than 4 days from now feel
> free
> to close it with version 4:5.8.6-1.
>
> --
> Sólo porque un mensaje pueda no ser recibido no implica que no
> valga la pena enviarlo.
>
> Lisandro Damián Nicanor Pérez Meyer
> http://perezmeyer.com.ar/
> http://perezmeyer.blogspot.com/
>

[Message part 2 (text/html, inline)]

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