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Created attachment 487051 [details] Xorg.0.log Description of problem: Did a yum update of my F15 machine this morning, and since then Xorg has been randomly segfaulting crashing all over the place. There are also some other gnome apps segfaulting too, but they may be separate problems. Attaching Xorg.0.log.old from one of these events. The stack trace in the log is: Backtrace: [ 1247.475] 0: /usr/bin/Xorg (xorg_backtrace+0x2f) [0x4a105f] [ 1247.475] 1: /usr/bin/Xorg (0x400000+0x620a6) [0x4620a6] [ 1247.475] 2: /lib64/libpthread.so.0 (0x7f30fadaf000+0xf4e0) [0x7f30fadbe4e0] [ 1247.475] 3: /usr/lib64/xorg/modules/extensions/libglx.so (0x7f30f9cde000+0x339cb) [0x7f30f9d119cb] [ 1247.475] 4: /usr/bin/Xorg (FreeClientResources+0xd5) [0x44c495] [ 1247.476] 5: /usr/bin/Xorg (CloseDownClient+0x5e) [0x42df6e] [ 1247.476] 6: /usr/bin/Xorg (0x400000+0x2ea1f) [0x42ea1f] [ 1247.476] 7: /usr/bin/Xorg (0x400000+0x22d3a) [0x422d3a] [ 1247.476] 8: /lib64/libc.so.6 (__libc_start_main+0xed) [0x7f30fa5a731d] [ 1247.476] 9: /usr/bin/Xorg (0x400000+0x23021) [0x423021] [ 1247.476] Segmentation fault at address (nil) [ 1247.476] Fatal server error: [ 1247.476] Caught signal 11 (Segmentation fault). Server aborting
Created attachment 487053 [details] yum update log from this morning Here's a list of packages that were updated this morning. No xorg packages were updated, so it seems semi-likely that the problem is in a related library. I'm not sure which one though, so I've opened this as an xorg-x11-server bug until we can determine that.
FWIW, attempting to change the background wallpaper in gnome-control-center seems to trigger the crash pretty frequently (not always though). It has also crashed doing things unrelated to that as well.
Created attachment 487153 [details] Piece of Wallpaper Sundown Dunes (garbled) Open "My Settings", then "Background". Before, gnome-control-center would crash at this point. Now, the thumbnails of the various wallpapers get rendered in the left pane. When a particular thumbnail gets a mouse click, then the background is rendered correctly. But a second later, X crashes, and upon logging in, the wallpaper is garbled. The previous Xorg.0.log shows a backtrace near ist tail: Backtrace: [ 452.990] 0: /usr/bin/Xorg (xorg_backtrace+0x2f) [0x4a105f] [ 452.990] 1: /usr/bin/Xorg (0x400000+0x620a6) [0x4620a6] [ 452.990] 2: /lib64/libpthread.so.0 (0x7f872d86c000+0xf4e0) [0x7f872d87b4e0] [ 452.990] Segmentation fault at address (nil) [ 452.990] Fatal server error: [ 452.990] Caught signal 11 (Segmentation fault). Server aborting
Maybe related problem -- often (50% of the time or so) when I log in I get no wallpaper at all. It'll show up on the desktop briefly as GNOME starts up, and then go black. If I log out and back in a few times, eventually the wallpaper will stick around after gnome has started.
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