Xorg.log contains "BUG: triggered 'if (!dev->valuator || dev->valuator->numAxes < 2)'"

[Thomas Hood]

If I use Displays... to resize the display of the external monitor I get the following messages, repeated about forty times (with different time stamp, obviously).

[ 12472.040] (II) intel(0): Allocated new frame buffer 2752x1050 stride 11264, tiled
[ 12472.075] BUG: triggered 'if (!dev->valuator || dev->valuator->numAxes < 2)'
BUG: ../../dix/getevents.c:850 in scale_to_desktop()
[ 12472.075]
Backtrace:
[ 12472.075] 0: /usr/bin/X (xorg_backtrace+0x26) [0x7f922a950846]
[ 12472.075] 1: /usr/bin/X (0x7f922a7c8000+0x622fe) [0x7f922a82a2fe]
[ 12472.075] 2: /usr/bin/X (0x7f922a7c8000+0x62f6d) [0x7f922a82af6d]
[ 12472.075] 3: /usr/bin/X (GetPointerEvents+0xe4) [0x7f922a82c304]
[ 12472.075] 4: /usr/bin/X (0x7f922a7c8000+0x1730a6) [0x7f922a93b0a6]
[ 12472.075] 5: /usr/bin/X (miPointerWarpCursor+0xe7) [0x7f922a93b527]
[ 12472.075] 6: /usr/bin/X (0x7f922a7c8000+0x871b1) [0x7f922a84f1b1]
[ 12472.075] 7: /usr/bin/X (0x7f922a7c8000+0x173a7c) [0x7f922a93ba7c]
[ 12472.075] 8: /usr/bin/X (0x7f922a7c8000+0x112183) [0x7f922a8da183]
[ 12472.075] 9: /usr/bin/X (0x7f922a7c8000+0xfd06e) [0x7f922a8c506e]
[ 12472.075] 10: /usr/bin/X (RRPointerScreenConfigured+0x75) [0x7f922a8c5295]
[ 12472.075] 11: /usr/bin/X (RRScreenSizeNotify+0x124) [0x7f922a8c7774]
[ 12472.075] 12: /usr/bin/X (0x7f922a7c8000+0xc9876) [0x7f922a891876]
[ 12472.075] 13: /usr/bin/X (ProcRRSetScreenSize+0x1e1) [0x7f922a8c7c81]
[ 12472.076] 14: /usr/bin/X (0x7f922a7c8000+0x4e8a1) [0x7f922a8168a1]
[ 12472.076] 15: /usr/bin/X (0x7f922a7c8000+0x3d7ba) [0x7f922a8057ba]
[ 12472.076] 16: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xed) [0x7f922898376d]
[ 12472.076] 17: /usr/bin/X (0x7f922a7c8000+0x3daad) [0x7f922a805aad]

System information

ThinkPad X220

Ubuntu 12.04 with some packages upgraded to Quantal

linux-image-3.5.0-10-generic 3.5.0-10.10
linux-image-extra-3.5.0-10-generic 3.5.0-10.10
udev 175-0ubuntu10
xserver-xorg 1:7.6+12ubuntu1
xserver-xorg-core 2:1.11.4-0ubuntu10.7
xserver-xorg-video-intel 2:2.17.0-1ubuntu4.1

$ uname -a
Linux tenerife 3.5.0-10-generic #10-Ubuntu SMP Mon Aug 13 15:23:58 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux

$ lspci -s 00:02.0 -v
00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) (prog-if 00 [VGA controller])
 Subsystem: Lenovo Device 21da
 Flags: bus master, fast devsel, latency 0, IRQ 44
 Memory at f0000000 (64-bit, non-prefetchable) [size=4M]
 Memory at e0000000 (64-bit, prefetchable) [size=256M]
 I/O ports at 5000 [size=64]
 Expansion ROM at <unassigned> [disabled]
 Capabilities: <access denied>
 Kernel driver in use: i915
 Kernel modules: i915

[Thomas Hood (jdthood)]

I restarted and then made copies of /var/log/Xorg.0.log at three points in time.

After boot, before attempting to resize the external display.
After attempting to resize the external display
After restoring the original configuration (second resize).

I now attach these three versions of Xorg.0.log.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Tomi Hukkalainen (tpievila)]

This is not limited to the intel driver, also happens on radeon.

[penalvch (penalvch)]

Thomas Hood, this bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? If so, could you please test for this with the latest development release of Ubuntu? ISO images are available from http://cdimage.ubuntu.com/daily-live/current/ .

If it remains an issue, could you please run the following command in the development release from a Terminal (Applications->Accessories->Terminal), as it will automatically gather and attach updated debug information to this report:

apport-collect -p xserver-xorg-input-evdev REPLACE-WITH-BUG-NUMBER

Thank you for your understanding.

Helpful bug reporting tips:
https://wiki.ubuntu.com/ReportingBugs

[Thomas Hood (jdthood)]

Sorry, I no longer own the laptop where I had the problem.

[penalvch (penalvch)]

Thomas Hood, this bug report is being closed due to your last comment https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-input-evdev/+bug/1044955/comments/8 regarding you no longer have the hardware. For future reference you can manage the status of your own bugs by clicking on the current status in the yellow line and then choosing a new status in the revealed drop down box. You can learn more about bug statuses at https://wiki.ubuntu.com/Bugs/Status. Thank you again for taking the time to report this bug and helping to make Ubuntu better. Please submit any future bugs you may find.