ubuntu-x-swat team mailing list archive

[Derek Monner <dmonner@xxxxxxxxx>]

Public bug reported:

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

** Affects: xorg (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386

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