https://bugs.freedesktop.org/show_bug.cgi?id=32312
Summary: openvg "lion" demo freezes the system & lockup GPU with r600g Product: Mesa Version: git Platform: x86-64 (AMD64) OS/Version: Linux (All) Status: NEW Severity: normal Priority: medium Component: Drivers/Gallium/r600 AssignedTo: dri-devel@lists.freedesktop.org ReportedBy: virtuousfox@gmail.com
in time of bug #30684 r600g were giving poor performance with "lion" demo (about ~30 fps on my system) but not long ago i've noticed big, x10 time speedup (up to ~350 fps). however, it was not for long: with 783e7caadf945f176cb297b8791769e2855fc9ef revision launching "lion" demo on my system results in 1) video system freeze 2) 100% CPU time usage on all cores and total system freeze up if i not act quickly and not kill demo process via ssh fast
if killed in time - all goes back to normal, in exception of launching gles1gears demo right after which results in same behaviour. however, repeated launch of gles1gears results in working demo but with some artefacts. third launch is all ok.
i'm pretty sure that regression was introduced in r600g in last 48 ~hours (same revision but with r300g work ok) but i haven't done bisect.