Comment # 1
on bug 67970
from Boris Gjenero
I've seen the same things on my Inspiron 6400 with Radeon X1400 graphics, running 64-bit Ubuntu 16.10 with kernel 4.8.0-26-generic. Though while playing with it I saw some variations in behaviour. Sometimes in dynpm, reported frequencies were from the last profile that was used. Sometimes, changing a profile had no effect. Using vblank_mode=0 glxgears, Chrome and Firefox I am unable to see a performance difference between low and mid. There is a very definite difference between those and high profile. Performance of dynpm and high profile is identical or very close. Playing with these settings can introduce instability. After switching among profiles, going back to dynpm usually causes brief bright flashes of the screen. Those flashes never happen after setting dynpm in /etc/rc.local. Also, changing to high profile caused a total hang once, where even Magic SysRq didn't help. Yes, I also see NMIs switching to low, but those seem to have no ill effect.
You are receiving this mail because:
- You are the assignee for the bug.
_______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
