segfault in shadowUpdatePacked triggered by "Virtual 3200 1200"
Submitted by Jonathan Nieder
Assigned to Xorg Project Team
Created attachment 46658 X server log exhibiting crash
Steve M. Robbins firstname.lastname@example.org noticed that uninstalling the ati driver on his system caused X to crash at startup. It turned out to be a misconfiguration --- since the right driver to use (radeon) was not autodetected, X used the fbdev driver. The fbdev driver is not supposed to make Xorg crash, though, hence this report.
The good news:
I can confirm that without xserver-xorg-video-ati installed:
- If I comment out the virtual directive, there is no crash.
- If I remove xorg.conf completely, there is no crash.
There is still a bunch of diagnostics in the log file:
[255110.061] (==) Depth 24 pixmap format is 32 bpp [255110.264] (==) FBDEV(0): Backing store disabled [255110.264] (EE) FBDEV(0): FBIOPUTCMAP: Invalid argument [255110.264] (EE) FBDEV(0): FBIOPUTCMAP: Invalid argument [255110.264] (EE) FBDEV(0): FBIOPUTCMAP: Invalid argument
Once I install xserver-xorg-video-ati, I can remove xorg.conf and it runs using the RADEON driver.
Original report is at http://bugs.debian.org/625521
Xorg.0.log attached. Will attach more info in followup.
Attachment 46658, "X server log exhibiting crash":