Bug#513904: Xorg runaway in NVSync(), see #336774
Package: xserver-xorg-video-nv
Version: 1:2.0.3-1
This seems to be a follow-up of archived bug #336774, which was closed
due to the submitter no longer having access to a test system on which
to reproduce the issue.
Symptom: Xorg starts using nearly 100% of the CPU, becomes unresponsive.
Stack backtrace, obtained by attaching gdb to the running process:
#0 0xb7c24532 in NVSync () from /usr/lib/xorg/modules/drivers/nv_drv.so
#1 0xb6b00668 in XAAComposite () from /usr/lib/xorg/modules/libxaa.so
#2 0x08157597 in DamageDamageRegion ()
#3 0x08144517 in CompositePicture ()
#4 0x0814a853 in PanoramiXRenderReset ()
#5 0x081476b5 in AllocatePicturePrivate ()
#6 0x08086ccb in Dispatch ()
#7 0x0806e6b9 in main ()
The symptoms have appeared only recently on this system, so they could signal
a hardware problem.
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