ubuntu-x-swat team mailing list archive

[Geir Ove Myhr <gomyhr@xxxxxxxxx>]

Thank you for reporting this. While the backtrace in Xorg.0.log is
useful for seeing where the problem is, it does not tell us everything
we want to know. We would therefore like you to obtain a full backtrace.

There are several methods for getting a full backtrace at https://wiki.ubuntu.com/X/Backtracing . My personal favourite is
sudo /etc/init.d/gdm stop
ulimit -c unlimited
sudo /etc/init.d/gdm start
and then provoke the crash and get a core file in /etc/X11 and then do the backtrace "offline" with
sudo gdb /usr/bin/Xorg /etc/X11/core 2>&1 | tee gdb-Xorg.txt
backtrace full

You may have to add
Section "ServerFlags"
       Option "NoTrapSignals" "true"
EndSection
to your xorg.conf for this to work, but I'm not sure.

** Description changed:

  Binary package hint: xorg
  
  Since the upgrade from Intrepid to Jaunty, X will hang randomly. It has
  happened in Firefox (while scrolling a webpage with the touchpad),
  OpenOffice (moving mouse and clicking an icon), and Eclipse several
  times while interacting with UI elements using the mouse pointer.
  
  When X hangs, the mouse moves but no UI elements respond. I am not able
  to switch virtual terminals, and CTRL-ALT-BKSP and CTRL-ALT-DEL do not
  respond, but CTRL-ALT-PRTSC-S-U-B is able to restart the machine. On the
  most recent hang, I found that I was able to SSH into the machine. The
  Xorg.log indicated a likely infinite loop, with the following backtrace:
  
  [mi] EQ overflowing. The server is probably stuck in an infinite loop.
  
  Backtrace:
  0: /usr/X11R6/bin/X(xorg_backtrace+0x3b) [0x813518b]
  1: /usr/X11R6/bin/X(mieqEnqueue+0x2d9) [0x8114c89]
  2: /usr/X11R6/bin/X(xf86PostButtonEvent+0x105) [0x80d8405]
  3: /usr/lib/xorg/modules/input//synaptics_drv.so [0xa6ac1729]
  4: /usr/lib/xorg/modules/input//synaptics_drv.so [0xa6ac3bf9]
  5: /usr/X11R6/bin/X [0x80c7da7]
  6: /usr/X11R6/bin/X [0x80b82cc]
  7: [0xb8016400]
  8: /usr/lib/libdrm.so.2(drmCommandNone+0x32) [0xb7924ee2]
  9: /usr/lib/xorg/modules/drivers//intel_drv.so [0xb78bb68f]
  10: /usr/X11R6/bin/X [0x817d1cb]
  11: /usr/X11R6/bin/X [0x8145f88]
  12: /usr/X11R6/bin/X [0x80f8b98]
  13: /usr/X11R6/bin/X(BlockHandler+0x58) [0x80911c8]
  14: /usr/X11R6/bin/X(WaitForSomething+0x124) [0x8132974]
  15: /usr/X11R6/bin/X(Dispatch+0x7e) [0x808d2be]
  16: /usr/X11R6/bin/X(main+0x3bd) [0x80722ed]
  17: /lib/tls/i686/cmov/libc.so.6(__libc_start_main+0xe5) [0xb7be2775]
  18: /usr/X11R6/bin/X [0x80717a1]
  
  [mi] EQ overflowing. The server is probably stuck in an infinite loop.
  [mi] EQ overflowing. The server is probably stuck in an infinite loop.
  [...repeats a few dozen times...]
  [mi] EQ overflowing. The server is probably stuck in an infinite loop.
  [mi] mieqEnqueue: more than six valuator events; dropping.
  [...these two repeat in alternation until the machine is rebooted...]
  
  I suspect the synaptics driver, since each hang involves interacting
  with UI elements using the mouse, immediately before the crash. I
  honestly can't say whether all these crashes happened while using the
  *touchpad* as opposed to a USB mouse, but the most recent one was the
  touchpad, and it's entirely possible that all the hangs I've experienced
  were during touchpad use.
  
  Lots of information should be attached via the ubuntu-bug tool -- please
  let me know if there's anything else I can add.
  
  ProblemType: Bug
  Architecture: i386
  DistroRelease: Ubuntu 9.04
  Package: xorg 1:7.4~5ubuntu18
  ProcEnviron:
   PATH=(custom, user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcVersion: Linux version 2.6.28-12-generic (buildd@rothera) (gcc version 4.3.3 (Ubuntu 4.3.3-5ubuntu4) ) #43-Ubuntu SMP Fri May 1 19:27:06 UTC 2009
  SourcePackage: xorg
  Uname: Linux 2.6.28-12-generic i686
+ 
+ [lspci]
+ 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 [1043:1882]
+ 00:02.0 VGA compatible controller [0300]: Intel Corporation Mobile 915GM/GMS/910GML Express Graphics Controller [8086:2592] (rev 04)
+ 	Subsystem: ASUSTeK Computer Inc. Device [1043:1882]

** Tags added: 915gm crash intel xorg

-- 
Xorg infinite loop, backtrace thru synaptics driver
https://bugs.launchpad.net/bugs/384333
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