Red Hat Bugzilla – Bug 837885
GUI stops responding to task switching commands
Last modified: 2013-02-13 16:02:39 EST
Description of problem:
GIU stops responding to mouse and keyboard input to switch application (ALT-TAB), or to the Windows key. Closing applications by clicking on the X in the top right hand corner also stops working. Also, the scroll down (but not scroll up) on my mouse wheel stopped working.
Version-Release number of selected component (if applicable):
It has happened twice in the last two days. I was just using the system when I became unable to switch between tasks etc.
Steps to Reproduce:
1. Don't know
Can't switch between applications
Can switch between applications!
Logging out from X and logging in again clears the fault.
Xorg.0.log contained the following:
[ 86621.186] [mi] EQ overflowing. The server is probably stuck in an infinite loop.
[ 86621.186] 0: /usr/bin/Xorg (xorg_backtrace+0x2f) [0x462e8f]
[ 86621.186] 1: /usr/bin/Xorg (mieqEnqueue+0x17d) [0x557aed]
[ 86621.186] 2: /usr/bin/Xorg (0x400000+0x46e73) [0x446e73]
[ 86621.186] 3: /usr/bin/Xorg (xf86PostButtonEvent+0xf7) [0x494927]
[ 86621.186] 4: /usr/lib64/xorg/modules/input/synaptics_drv.so (0x7fb246ff4000+0x2d01) [0x7fb246ff6d01]
[ 86621.186] 5: /usr/lib64/xorg/modules/input/synaptics_drv.so (0x7fb246ff4000+0x4eb6) [0x7fb246ff8eb6]
[ 86621.186] 6: /usr/bin/Xorg (0x400000+0x7f618) [0x47f618]
[ 86621.186] 7: /usr/bin/Xorg (0x400000+0xa4e4b) [0x4a4e4b]
[ 86621.186] 8: /lib64/libpthread.so.0 (0x315ec00000+0xf500) [0x315ec0f500]
[ 86621.186] 9: /lib64/libc.so.6 (__select+0x13) [0x315e4ea3e3]
[ 86621.186] 10: /usr/bin/Xorg (WaitForSomething+0x186) [0x460366]
[ 86621.186] 11: /usr/bin/Xorg (0x400000+0x3387a) [0x43387a]
[ 86621.186] 12: /usr/bin/Xorg (0x400000+0x22ea5) [0x422ea5]
[ 86621.186] 13: /lib64/libc.so.6 (__libc_start_main+0xed) [0x315e42169d]
[ 86621.186] 14: /usr/bin/Xorg (0x400000+0x23191) [0x423191]
most likely video driver issue, not synaptics driver. the synaptics driver merely triggers the error. Cause in these cases is usually the video driver (or server) hanging elsewhere.
Please attach your full Xorg.log
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