subject:"\[Bug 774978\] Re\: xserver crashes in RecordAReply when XRecord is enabled in syndaemon"

** Description changed:

- Binary package hint: xorg
+ [Impact]
+ Fairly widespread X crash that occurs seemingly randomly to users, but is 
actually triggered when a client application makes a call that results in a 
syndaemon call in the Xrecord module that fails.
  
- Xserver crashed (landed me back at the gdm login); it happened just
- after I'd opened a page in firefox - nothing too special, it had some
- flash in but nothing too unusual and the page reopened fine now.
+ [Development Fix]
+ Disable linking to the X record module in the synaptics package.  See Robert 
Hooker's debdiff.
+ 
+ [Stable Fix]
+ Same fix as for development.
+ 
+ [Regression Potential]
+ 
+ 
+ [Original Report]
+ Xserver crashed (landed me back at the gdm login); it happened just after I'd 
opened a page in firefox - nothing too special, it had some flash in but 
nothing too unusual and the page reopened fine now.
  
  Seg is in the Xorg.0.log.org
  
  Dave
- 
  
  Backtrace:
  [ 15223.014] 0: /usr/bin/X (xorg_backtrace+0x26) [0x4a2626]
  [ 15223.014] 1: /usr/bin/X (0x40+0x6219a) [0x46219a]
  [ 15223.014] 2: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7f8335203000+0xfc60) 
[0x7f8335212c60]
  [ 15223.014] 3: /usr/lib/xorg/modules/extensions/librecord.so 
(0x7f8332bb8000+0x2920) [0x7f8332bba920]
  [ 15223.014] 4: /usr/bin/X (_CallCallbacks+0x34) [0x432af4]
  [ 15223.015] 5: /usr/bin/X (WriteToClient+0x21a) [0x461c9a]
  [ 15223.015] 6: /usr/lib/xorg/modules/extensions/libdri2.so 
(ProcDRI2WaitMSCReply+0x52) [0x7f833259fd82]
  [ 15223.015] 7: /usr/lib/xorg/modules/extensions/libdri2.so 
(DRI2WaitMSCComplete+0x59) [0x7f833259e479]
  [ 15223.015] 8: /usr/lib/xorg/modules/drivers/intel_drv.so 
(0x7f833234b000+0x25030) [0x7f8332370030]
  [ 15223.015] 9: /lib/x86_64-linux-gnu/libdrm.so.2 (drmHandleEvent+0x108) 
[0x7f83327a9478]
  [ 15223.015] 10: /usr/bin/X (WakeupHandler+0x4b) [0x4322fb]
  [ 15223.015] 11: /usr/bin/X (WaitForSomething+0x1b6) [0x45c786]
  [ 15223.015] 12: /usr/bin/X (0x40+0x2e032) [0x42e032]
  [ 15223.015] 13: /usr/bin/X (0x40+0x21a7e) [0x421a7e]
  [ 15223.015] 14: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xff) 
[0x7f833414ceff]
  [ 15223.015] 15: /usr/bin/X (0x40+0x21629) [0x421629]
  [ 15223.015] Segmentation fault at address 0x7f8335ceb010
- [ 15223.015] 
+ [ 15223.015]
  Caught signal 11 (Segmentation fault). Server aborting
- [ 15223.015] 
- Please consult the The X.Org Foundation support 
-at http://wiki.x.org
- 
+ [ 15223.015]
+ Please consult the The X.Org Foundation support
+   at http://wiki.x.org
  
  ProblemType: Bug
  DistroRelease: Ubuntu 11.04
  Package: xserver-xorg 1:7.6+4ubuntu3
  ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
  Uname: Linux 2.6.38-8-generic x86_64
  Architecture: amd64
  CompizPlugins: 
[core,bailer,detection,composite,opengl,decor,compiztoolbox,gnomecompat,move,place,regex,resize,mousepoll,session,snap,vpswitch,animation,wall,workarounds,expo,ezoom,staticswitcher,fade,scale,unityshell]
  CompositorRunning: compiz
  CurrentDmesg:
   [   46.803341] NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state 
recovery directory
   [   46.920399] NFSD: starting 90-second grace period
   [   48.517660] hda-intel: IRQ timing workaround is activated for card #0. 
Suggest a bigger bdl_pos_adj.
   [   52.500035] eth2: no IPv6 routers present
  DRM.card0.LVDS.1:
   status: connected
   enabled: enabled
   dpms: On
   modes: 1280x800
   edid-base64: 
AP///wBMozM2AAAPAQOAIRV4Cof1lFdPjCcnUFQBAQEBAQEBAQEBAQEBAQEB7hoAgFAgEDAQMBMAS88QAAAZDwAAACOHAmQC/gBTQU1TVU5HCiAgICAg/gBMVE4xNTRYMy1MMDYKAHA=
  DRM.card0.VGA.1:
   status: disconnected
   enabled: disabled
   dpms: Off
   modes:
   edid-base64:
  Date: Sun May  1 17:26:30 2011
  DistUpgraded: Log time: 2010-07-24 18:47:52.187518
  DistroCodename: natty
  DistroVariant: ubuntu
  GraphicsCard:
   Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics 
Controller [8086:27a2] (rev 03) (prog-if 00 [VGA controller])
     Subsystem: Toshiba America Info Systems Device [1179:ff10]
     Subsystem: Toshiba America Info Systems Device [1179:ff10]
  Lsusb:
   Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
   Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
   Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
   Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: TOSHIBA Equium A100
  PccardctlIdent:
   Socket 0:
     no product info available
  PccardctlStatus:
   Socket 0:
     no card
  ProcEnviron:
   SHELL=/bin/bash
   PATH=(custom, no user)
   LC_MESSAGES=en_GB.UTF-8
   LANG=en_US.UTF-8
   LANGUAGE=en_GB:en
  ProcKernelCmdLine: root=UUID=031a90fc-7cc9-4daf-bb3f-4bb3f68653ac ro quiet 
splash  crashkernel=384M-2G:64M,2G-:128M
  Renderer: Unknown
  SourcePackage: xorg
  UpgradeStatus: Upgraded to natty on 2011-03-12 (49 days ago)

[Bug 774978] Re: xserver crashes in RecordAReply when XRecord is enabled in syndaemon

2011-06-08 Thread Launchpad Bug Tracker

** Branch linked: lp:ubuntu/natty-proposed/xserver-xorg-input-synaptics

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Title:
  xserver crashes in RecordAReply when XRecord is enabled in syndaemon

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[Bug 774978] Re: xserver crashes in RecordAReply when XRecord is enabled in syndaemon

I root-caused this bug to figure out what exactly went wrong here, also
to help understand the ramifications of dropping xrecord.

Back in October last year, bug #598834 was filed in Debian[1] requesting
that  libxtst-dev be added as a dependency to xserver-xorg-input-
synaptics, to enable syndaemon's -R option to work.  The man page
documents this option as:

  Use the XRecord extension for detecting keyboard activity instead of
polling the keyboard state.

XRecord has kind of a mixed history and I even recall an X.org
conference where it was considered to drop it[2] since it's not been too
well maintained.  Likely it's a bit buggy.  But not a big deal; we
didn't use -R for syndaemon in Ubuntu, but this would make the
functionality available to anyone wishing to opt in to use it for
testing or whatever.  We didn't even take note of the new option.

But then one day, someone noticed that syndaemon was eating precious
battery power due to polling and noticed it had this -R option which
promised to make it stop doing it.  Polling is bad.  And so it was that
on April 5th, gnome-settings-daemon opted to start calling syndaemon
with the -R flag when people have the Disable touchpad while typing
option flipped on.

Bug #754470[3] was filed shortly thereafter, on April 8th.  It seemed
that people were suddenly seeing syndaemon consuming 100% CPU either
right after boot or some various point during use.  Gah!  Us X guys got
a spate of these reports around this time, which was quite troubling
because it was so near to release and (as far as we knew) we hadn't made
any changes to X that would have caused this!

Chase Douglas was quite a hero and jumped right on the problem.  He had
been doing a lot of X development work for touch devices which had
involved a number of uploads to -synaptics, and so he was both familiar
with the code and perhaps worried his changes might have caused the
problem people were seeing.  He figured out that XRecord wasn't able to
process all the different types of events that it was experiencing, and
so would leave some events on the stack and get stuck in a loop trying
to reprocess them.  He added a patch that would work around this problem
by just draining those unrecognized events.  The CPU issue was solved.
But everyone knew this was just papering over whatever the underlying
problem was.  His fix was uploaded 04-16.

Bug #771655[4] was filed on 4/26 suggesting a regression occurred
starting around apr 20th.  This bug #774978[5] was filed on 5/1.
Quickly we started seeing a deluge of dupe bug reports about this X
crash.  (Check it: dozens of dupes and 37 affected; plus 28 on #760695,
15 on #776654, 22 on #780358, and 80! on #778490.)

On 5/23 Sarvatt figured out that disabling record made the problem go
away.  I'd really like to know how he had this brainstorm, and wish we'd
pumped the fix out sooner after that point.  Sarvatt kicks ass, we need
to listen to him better.  Anyway, subsequent testers on this bug confirm
his findings, and here we are now today.

1:  http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=598834
2:  http://xorg.freedesktop.org/wiki/Events/XDC2008/Notes
3:  
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-input-synaptics/+bug/754470
4:  
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/771655
5:  
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-input-synaptics/+bug/774978

** Bug watch added: Debian Bug tracker #598834
   http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=598834

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Title:
  xserver crashes in RecordAReply when XRecord is enabled in syndaemon

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[Bug 774978] Re: xserver crashes in RecordAReply when XRecord is enabled in syndaemon

** Description changed:

  [Impact]
  Fairly widespread X crash that occurs seemingly randomly to users, but is 
actually triggered when a client application makes a call that results in a 
syndaemon call in the Xrecord module that fails.
  
  [Development Fix]
  Disable linking to the X record module in the synaptics package.  See Robert 
Hooker's debdiff.
  
  [Stable Fix]
  Same fix as for development.
  
  [Regression Potential]
- 
+ XRecord was not enabled in maverick, so disabling it is not a regression from 
that version.  It was enabled in natty to permit avoiding polling of the 
keyboard which presumably might save battery power usage; however it was found 
to cause widespread bugs shortly after introducing it - see comment #38 for 
historical discussion.
  
  [Original Report]
  Xserver crashed (landed me back at the gdm login); it happened just after I'd 
opened a page in firefox - nothing too special, it had some flash in but 
nothing too unusual and the page reopened fine now.
  
  Seg is in the Xorg.0.log.org
  
  Dave
  
  Backtrace:
  [ 15223.014] 0: /usr/bin/X (xorg_backtrace+0x26) [0x4a2626]
  [ 15223.014] 1: /usr/bin/X (0x40+0x6219a) [0x46219a]
  [ 15223.014] 2: /lib/x86_64-linux-gnu/libpthread.so.0 (0x7f8335203000+0xfc60) 
[0x7f8335212c60]
  [ 15223.014] 3: /usr/lib/xorg/modules/extensions/librecord.so 
(0x7f8332bb8000+0x2920) [0x7f8332bba920]
  [ 15223.014] 4: /usr/bin/X (_CallCallbacks+0x34) [0x432af4]
  [ 15223.015] 5: /usr/bin/X (WriteToClient+0x21a) [0x461c9a]
  [ 15223.015] 6: /usr/lib/xorg/modules/extensions/libdri2.so 
(ProcDRI2WaitMSCReply+0x52) [0x7f833259fd82]
  [ 15223.015] 7: /usr/lib/xorg/modules/extensions/libdri2.so 
(DRI2WaitMSCComplete+0x59) [0x7f833259e479]
  [ 15223.015] 8: /usr/lib/xorg/modules/drivers/intel_drv.so 
(0x7f833234b000+0x25030) [0x7f8332370030]
  [ 15223.015] 9: /lib/x86_64-linux-gnu/libdrm.so.2 (drmHandleEvent+0x108) 
[0x7f83327a9478]
  [ 15223.015] 10: /usr/bin/X (WakeupHandler+0x4b) [0x4322fb]
  [ 15223.015] 11: /usr/bin/X (WaitForSomething+0x1b6) [0x45c786]
  [ 15223.015] 12: /usr/bin/X (0x40+0x2e032) [0x42e032]
  [ 15223.015] 13: /usr/bin/X (0x40+0x21a7e) [0x421a7e]
  [ 15223.015] 14: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xff) 
[0x7f833414ceff]
  [ 15223.015] 15: /usr/bin/X (0x40+0x21629) [0x421629]
  [ 15223.015] Segmentation fault at address 0x7f8335ceb010
  [ 15223.015]
  Caught signal 11 (Segmentation fault). Server aborting
  [ 15223.015]
  Please consult the The X.Org Foundation support
    at http://wiki.x.org
  
  ProblemType: Bug
  DistroRelease: Ubuntu 11.04
  Package: xserver-xorg 1:7.6+4ubuntu3
  ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
  Uname: Linux 2.6.38-8-generic x86_64
  Architecture: amd64
  CompizPlugins: 
[core,bailer,detection,composite,opengl,decor,compiztoolbox,gnomecompat,move,place,regex,resize,mousepoll,session,snap,vpswitch,animation,wall,workarounds,expo,ezoom,staticswitcher,fade,scale,unityshell]
  CompositorRunning: compiz
  CurrentDmesg:
   [   46.803341] NFSD: Using /var/lib/nfs/v4recovery as the NFSv4 state 
recovery directory
   [   46.920399] NFSD: starting 90-second grace period
   [   48.517660] hda-intel: IRQ timing workaround is activated for card #0. 
Suggest a bigger bdl_pos_adj.
   [   52.500035] eth2: no IPv6 routers present
  DRM.card0.LVDS.1:
   status: connected
   enabled: enabled
   dpms: On
   modes: 1280x800
   edid-base64: 
AP///wBMozM2AAAPAQOAIRV4Cof1lFdPjCcnUFQBAQEBAQEBAQEBAQEBAQEB7hoAgFAgEDAQMBMAS88QAAAZDwAAACOHAmQC/gBTQU1TVU5HCiAgICAg/gBMVE4xNTRYMy1MMDYKAHA=
  DRM.card0.VGA.1:
   status: disconnected
   enabled: disabled
   dpms: Off
   modes:
   edid-base64:
  Date: Sun May  1 17:26:30 2011
  DistUpgraded: Log time: 2010-07-24 18:47:52.187518
  DistroCodename: natty
  DistroVariant: ubuntu
  GraphicsCard:
   Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics 
Controller [8086:27a2] (rev 03) (prog-if 00 [VGA controller])
     Subsystem: Toshiba America Info Systems Device [1179:ff10]
     Subsystem: Toshiba America Info Systems Device [1179:ff10]
  Lsusb:
   Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
   Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
   Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
   Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
   Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  MachineType: TOSHIBA Equium A100
  PccardctlIdent:
   Socket 0:
     no product info available
  PccardctlStatus:
   Socket 0:
     no card
  ProcEnviron:
   SHELL=/bin/bash
   PATH=(custom, no user)
   LC_MESSAGES=en_GB.UTF-8
   LANG=en_US.UTF-8
   LANGUAGE=en_GB:en
  ProcKernelCmdLine: root=UUID=031a90fc-7cc9-4daf-bb3f-4bb3f68653ac ro quiet 
splash  crashkernel=384M-2G:64M,2G-:128M
  Renderer: Unknown
  SourcePackage: xorg
  UpgradeStatus: Upgraded to natty on 2011-03-12 (49 days ago)
  dmi.bios.date: 10/23/2006

[Bug 774978] Re: xserver crashes in RecordAReply when XRecord is enabled in syndaemon

2011-06-08 Thread Ondrej Certik

Thanks Bryce for this wonderful explanation. I was wondering what the
real problem is. Now it's quite clear I think.

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Title:
  xserver crashes in RecordAReply when XRecord is enabled in syndaemon

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[Bug 774978] Re: xserver crashes in RecordAReply when XRecord is enabled in syndaemon

I repeat, it seems that bug is not fixed. Xorg log with backtrace is
attached.

xserver-xorg-input-synaptics:
  Installed: 1.3.99+git20110116.0e27ce3a-0ubuntu12.1
  Candidate: 1.3.99+git20110116.0e27ce3a-0ubuntu12.1
  Version table:
 *** 1.3.99+git20110116.0e27ce3a-0ubuntu12.1 0
100 /var/lib/dpkg/status
 1.3.99+git20110116.0e27ce3a-0ubuntu12.1~lp774978 0
500 http://ppa.launchpad.net/xorg-edgers/ppa/ubuntu/ natty/main i386 
Packages
 1.3.99+git20110116.0e27ce3a-0ubuntu12 0
500 http://de.archive.ubuntu.com/ubuntu/ natty/main i386 Packages


** Attachment added: Crash log for xserver with xserver-xorg-input-synaptics 
1.3.99+git20110116.0e27ce3a-0ubuntu12.1
   
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-input-synaptics/+bug/774978/+attachment/2160262/+files/Xorg.0.log.old

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Title:
  xserver crashes in RecordAReply when XRecord is enabled in syndaemon

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[Bug 774978] Re: xserver crashes in RecordAReply when XRecord is enabled in syndaemon

@erm67
I tried your method (disabling record module in xorg.conf) but all I got was

[  1394.228] (WW) record will not be loaded unless you've specified it to be 
loaded elsewhere.
...
[  1394.228] (II) record will be loaded even though the default is to disable 
it.

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Title:
  xserver crashes in RecordAReply when XRecord is enabled in syndaemon

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[Bug 774978] Re: xserver crashes in RecordAReply when XRecord is enabled in syndaemon

@IFred, dude, you have xorg-edgers installed.  And I can't tell whether
or not the crash you experienced is the same as this bug:

Backtrace:
[   811.942] 0: /usr/bin/X (xorg_backtrace+0x3b) [0x80b188b]
[   811.942] 1: /usr/bin/X (0x8048000+0x65828) [0x80ad828]
[   811.942] 2: (vdso) (__kernel_rt_sigreturn+0x0) [0x81140c]
[   811.943] 3: /usr/bin/X (ProcessWorkQueue+0x30) [0x8063da0]
[   811.943] 4: /usr/bin/X (WaitForSomething+0x60) [0x80a65c0]
[   811.943] 5: /usr/bin/X (0x8048000+0x4dcce) [0x8095cce]
[   811.943] 6: /usr/bin/X (0x8048000+0x1a81c) [0x806281c]
[   811.943] 7: /lib/i386-linux-gnu/libc.so.6 (__libc_start_main+0xe7) 
[0x353e37]
[   811.943] 8: /usr/bin/X (0x8048000+0x1a411) [0x8062411]
[   811.943] Segmentation fault at address (nil)

Your system is hardly stock.  I don't think your findings are at all
relevant to this bug.

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Title:
  xserver crashes in RecordAReply when XRecord is enabled in syndaemon

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[Bug 774978] Re: xserver crashes in RecordAReply when XRecord is enabled in syndaemon

@IFred, well maybe relevant.  Near as I can tell you do have the fixed
version installed.  But having xorg-edgers installed confuses me.

Would be nice to get this confirmed as unfixed from someone not running
xorg-edgers.

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Title:
  xserver crashes in RecordAReply when XRecord is enabled in syndaemon

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[Bug 774978] Re: xserver crashes in RecordAReply when XRecord is enabled in syndaemon

@IFred, also please provide a full backtrace.  The Xorg.0.log backtraces
are nigh-useless in situations like this since they tend to not include
symbols and calling parameters and such.

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Title:
  xserver crashes in RecordAReply when XRecord is enabled in syndaemon

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[Bug 774978] Re: xserver crashes in RecordAReply when XRecord is enabled in syndaemon

@Bryce Harrington
ppa-purge in progress

 provide a full backtrace
But how?

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Title:
  xserver crashes in RecordAReply when XRecord is enabled in syndaemon

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[Bug 774978] Re: xserver crashes in RecordAReply when XRecord is enabled in syndaemon

2011-06-08 Thread Eric Germán Burgueño

Hi Bruce/all, first of all thank you for the hard work. I can try to
reproduce having the fix installed, but I haven't found a reliable way
to.

@iFred, I saw your method involved running git citool from the Recovery
console session. git citool doesn't do anything for me but complain
citool is not a command. Should I need to install something else above
git?

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Title:
  xserver crashes in RecordAReply when XRecord is enabled in syndaemon

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[Bug 774978] Re: xserver crashes in RecordAReply when XRecord is enabled in syndaemon

@Bryce Harrington
I purged xorg-edgers ppa.

xserver-xorg-input-synaptics:
  Installed: 1.3.99+git20110116.0e27ce3a-0ubuntu12
  Candidate: 1.3.99+git20110116.0e27ce3a-0ubuntu12
  Version table:
 *** 1.3.99+git20110116.0e27ce3a-0ubuntu12 0
500 http://de.archive.ubuntu.com/ubuntu/ natty/main i386 Packages
100 /var/lib/dpkg/status

Bug remains at it's place, simple test sequence with git citool in
Recovery Console leads to crash.

@Eric Germán Burgueño
You need git-gui package.

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Title:
  xserver crashes in RecordAReply when XRecord is enabled in syndaemon

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[Bug 774978] Re: xserver crashes in RecordAReply when XRecord is enabled in syndaemon

xserver-xorg-input-synaptics:
  Installed: 1.3.99+git20110116.0e27ce3a-0ubuntu12.1
  Candidate: 1.3.99+git20110116.0e27ce3a-0ubuntu12.1
  Version table:
 *** 1.3.99+git20110116.0e27ce3a-0ubuntu12.1 0
500 http://de.archive.ubuntu.com/ubuntu/ natty-proposed/main i386 
Packages
100 /var/lib/dpkg/status
 1.3.99+git20110116.0e27ce3a-0ubuntu12 0
500 http://de.archive.ubuntu.com/ubuntu/ natty/main i386 Packages

Bug remains at it's place.

** Changed in: xserver-xorg-input-synaptics (Ubuntu Natty)
   Status: Fix Committed = Confirmed

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Title:
  xserver crashes in RecordAReply when XRecord is enabled in syndaemon

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[Bug 774978] Re: xserver crashes in RecordAReply when XRecord is enabled in syndaemon

I also tried to rename /usr/lib/xorg/modules/extensions/librecord.so to force 
xserver not to load this module.
Log says that module was not loaded, but bug is still present.

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Title:
  xserver crashes in RecordAReply when XRecord is enabled in syndaemon

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[Bug 774978] Re: xserver crashes in RecordAReply when XRecord is enabled in syndaemon

2011-06-08 Thread Maciej Rumianowski

No crashes with a patch. The way I could reproduce the bug is described
in dupe #778490 comment 106

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Title:
  xserver crashes in RecordAReply when XRecord is enabled in syndaemon

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[Bug 774978] Re: xserver crashes in RecordAReply when XRecord is enabled in syndaemon

2011-06-08 Thread Carsten Agger

596.564] 
Backtrace:
[   596.564] 0: /usr/bin/X (xorg_backtrace+0x3b) [0x80eab2b]
[   596.564] 1: /usr/bin/X (0x8048000+0x5fad8) [0x80a7ad8]
[   596.564] 2: (vdso) (__kernel_rt_sigreturn+0x0) [0xb77b240c]
[   596.564] 3: /usr/bin/X (_CallCallbacks+0x3e) [0x8074e1e]
[   596.564] 4: /usr/bin/X (WriteToClient+0x267) [0x80a7617]
[   596.564] 5: /usr/lib/xorg/modules/extensions/libdri2.so 
(ProcDRI2WaitMSCReply+0x62) [0xb735fbf2]
[   596.564] 6: /usr/lib/xorg/modules/extensions/libdri2.so 
(DRI2WaitMSCComplete+0x75) [0xb735dfc5]
[   596.565] 7: /usr/lib/xorg/modules/drivers/intel_drv.so (0xb72f7000+0x226bc) 
[0xb73196bc]
[   596.565] 8: /usr/lib/xorg/modules/drivers/intel_drv.so (0xb72f7000+0x87d2) 
[0xb72ff7d2]
[   596.565] 9: /lib/i386-linux-gnu/libdrm.so.2 (drmHandleEvent+0xf5) 
[0xb7348665]
[   596.565] 10: /usr/lib/xorg/modules/drivers/intel_drv.so (0xb72f7000+0x7937) 
[0xb72fe937]
[   596.565] 11: /usr/bin/X (WakeupHandler+0x52) [0x8074602]
[   596.565] 12: /usr/bin/X (WaitForSomething+0x1ba) [0x80a1f4a]
[   596.565] 13: /usr/bin/X (0x8048000+0x27f1e) [0x806ff1e]
[   596.565] 14: /usr/bin/X (0x8048000+0x1a81c) [0x806281c]
[   596.565] 15: /lib/i386-linux-gnu/libc.so.6 (__libc_start_main+0xe7) 
[0xb74c8e37]
[   596.565] 16: /usr/bin/X (0x8048000+0x1a411) [0x8062411]
[   596.565] Segmentation fault at address 0xb593c008
[   596.565] 
Caught signal 11 (Segmentation fault). Server aborting
[   596.565] 
Please consult the The X.Org Foundation support 
 at http://wiki.x.org
 for help. 
[   596.565] Please also check the log file at /var/log/Xorg.0.log for 
additional information.
[   596.565] 
[   596.616] (II) Power Button: Close
[   596.616] (II) UnloadModule: evdev
[   596.616] (II) Unloading evdev
[   596.676] (II) Video Bus: Close
[   596.676] (II) UnloadModule: evdev
[   596.676] (II) Unloading evdev
[   596.676] (II) Sleep Button: Close
[   596.676] (II) UnloadModule: evdev
[   596.676] (II) Unloading evdev
[   596.676] (II) Logitech Optical USB Mouse: Close
[   596.676] (II) UnloadModule: evdev
[   596.676] (II) Unloading evdev
[   596.677] (II) CNF7017: Close
[   596.677] (II) UnloadModule: evdev
[   596.677] (II) Unloading evdev
[   596.677] (II) AT Translated Set 2 keyboard: Close
[   596.677] (II) UnloadModule: evdev
[   596.677] (II) Unloading evdev
[   596.677] (II) PS/2 Mouse: Close
[   596.677] (II) UnloadModule: evdev
[   596.677] (II) Unloading evdev
[   596.680] (II) UnloadModule: synaptics
[   596.681] (II) Unloading synaptics
[   596.681] (II) AIGLX: Suspending AIGLX clients for VT switch
[   596.742]  ddxSigGiveUp: Closing log


Just got this crash again, as reported in #780358. Is this still guaranteed to 
be the same problem, i.e. the Xrecord thing? The backtraces are not completely 
identical.

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Title:
  xserver crashes in RecordAReply when XRecord is enabled in syndaemon

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[Bug 774978] Re: xserver crashes in RecordAReply when XRecord is enabled in syndaemon

Directions on gathering full traces are here:

http://wiki.ubuntu.com/X/Backtracing

From what I've seen, the easy Apport approach doesn't seem to work with
this class of crash for some odd reason, so you'll probably need to use
the gdb method. Install debug symbol packages for the xserver, intel
driver, and libdrm2 as a minimum.

If you have this same crash, you should see a line with librecord.so
towards the top of the stack. You should also see a CallCallbacks entry
and possibly an entry for libpthread.so. If you don't see librecord.so
at all, then you almost certainly have some unrelated crash,
particularly if you have the 12.1 -synaptics installed, restarted X, and
it still crashed.

Aside from the 12.1 package, there are also several workarounds which seem
effective in preventing the crash:
a. Turn off the Disable touchpad while typing option in the mouse settings
gui
b. Uninstall xserver-xorg-input-synaptics
c. Rename the /usr/lib/xorg/modules/extensions/librecord.so to prevent the
module from even loading

iFred, re-reviewing all the information you've provided, and especially
the fact that you tried renaming librecord.so, I think you have some
other unrelated crash bug. Please file a new bug report via 'ubuntu-bug
xorg', and collect a full backtrace and attach to that bug report.

All X crash bugs basically have exactly the same symptoms - you're
suddenly dropped back to the login screen, and some crude backtrace is
listed in your Xorg.0.log. But those Xorg.0.log crash dumps are
generally fairly worthless; sometimes it is enough to spot dupe bugs,
but often (like in these cases) there can be some ambiguity. So it's
unfortunately quite easy to confuse one person's crash with another (I
even get them confused.) Full backtraces are needed to be absolutely
sure. These provide exactly which line numbers and functions in each
file were involved, and usually even shows the values of different
variables. Often with the full traces a skilled eye can spot the flaw
right off the bat. The Xorg.0.log crash dumps don't have any of this
information.

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Title:
xserver crashes in RecordAReply when XRecord is enabled in syndaemon

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[Bug 774978] Re: xserver crashes in RecordAReply when XRecord is enabled in syndaemon

2011-06-07 Thread Launchpad Bug Tracker

This bug was fixed in the package xserver-xorg-input-synaptics -
1.3.99+git20110116.0e27ce3a-0ubuntu14

---
xserver-xorg-input-synaptics (1.3.99+git20110116.0e27ce3a-0ubuntu14) oneiric; 
urgency=low

  * Drop libxtst-dev build dependency so syndaemon does not use XRecord,
preventing a wide range of crashes in _CallCallbacks. (LP: #774978)
 -- Robert Hooker sarv...@ubuntu.com   Mon, 23 May 2011 10:13:09 -0400

** Changed in: xserver-xorg-input-synaptics (Ubuntu)
   Status: Triaged = Fix Released

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Title:
  xserver crashes in RecordAReply when XRecord is enabled in syndaemon

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[Bug 774978] Re: xserver crashes in RecordAReply when XRecord is enabled in syndaemon

2011-06-07 Thread Martin Pitt

Accepted xserver-xorg-input-synaptics into natty-proposed, the package
will build now and be available in a few hours. Please test and give
feedback here. See https://wiki.ubuntu.com/Testing/EnableProposed for
documentation how to enable and use -proposed. Thank you in advance!

** Also affects: xserver-xorg-input-synaptics (Ubuntu Natty)
   Importance: Undecided
   Status: New

** Changed in: xserver-xorg-input-synaptics (Ubuntu Natty)
   Status: New = Fix Committed

** Tags added: verification-needed

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Title:
  xserver crashes in RecordAReply when XRecord is enabled in syndaemon

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[Bug 774978] Re: xserver crashes in RecordAReply when XRecord is enabled in syndaemon

2011-06-05 Thread Avery

errg. This bug is a real bear when I've just finished entering notes
into a patient's chart. It seems to be totally random, though, I cannot
connect the crash to any distinct user behavior.

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Title:
  xserver crashes in RecordAReply when XRecord is enabled in syndaemon

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[Bug 774978] Re: xserver crashes in RecordAReply when XRecord is enabled in syndaemon

2011-06-03 Thread erm67

librecord.so is an Xorg extension, I had the same problem but after
disabling the record extension it disappeared:

In /etc/X11/xorg.conf.d/10-modules.conf  I added:

Section  Module
 Disable record  
EndSection

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  xserver crashes in RecordAReply when XRecord is enabled in syndaemon

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[Bug 774978] Re: xserver crashes in RecordAReply when XRecord is enabled in syndaemon

@Robert Hooker
Just got your xserver-xorg-input-synaptics package from xorg-edgers ppa.
My standard test sequence (see #780358) isn't causing crash anymore. Thank you!

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  xserver crashes in RecordAReply when XRecord is enabled in syndaemon

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[Bug 774978] Re: xserver crashes in RecordAReply when XRecord is enabled in syndaemon

Oh shi... Enhanced test sequence caused crash again.

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Title:
  xserver crashes in RecordAReply when XRecord is enabled in syndaemon

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[Bug 774978] Re: xserver crashes in RecordAReply when XRecord is enabled in syndaemon

Got same crash already twice during this morning.

** Attachment added: Crash log for xserver with updated synaptics package
   
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-input-synaptics/+bug/774978/+attachment/2144397/+files/Xorg.0.log.old

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[Bug 774978] Re: xserver crashes in RecordAReply when XRecord is enabled in syndaemon