Commen=
t # 22
on bug 92936<=
/a>
from Andy Furniss
(In reply to Andy Furniss from comment #14)
> Been testing vce and there is an issue with auto.
>=20
> This is not just this kernel, I've been back and now I have a script t=
o test
> lots of runs, I can reproduce on older kernels + current fixes as well.
>=20
> The issue is that it will hang, at this time I am apparently OK in tha=
t I
> can use desktop normally. There is no hung task timeout. If I kill the
> gstreamer process it won't return, then I may get a hung task trace.
>=20
> Whether I kill gstreamer or not, quitting X or a VT switch will lock up
> display.
>=20
> This only happens when
> /sys/class/drm/card0/device/power_dpm_force_performance_level is auto.
>=20
> If it's high or low I can repeatedly run vce encodes OK - I have teste=
d >
> 1000.
>=20
> On this kernel and fixes it only takes < 5 runs to lock with the sa=
me test.
>=20
> On an older kernel it lasted for 25 runs (which is I guess why I didn'=
t hit
> it in "normal" testing + I often forced high for bench marki=
ng anyway)
With the latest tonga vce firmware + current agd5f drm-next kernels I can't
reproduce this anymore.