Not quite. On my i7 2620M (Lenovo T420) the gpu frequently hangs when decoding videos (vaapi) and running OpenGL apps/games at the same time. Disabling iommu makes my system relatively stable even with rc6 enabled. I haven't played with the semaphores however. -- Nic -----Urspr?ngliche Nachricht----- Von: "Andrew Lutomirski" <luto at mit.edu> Gesendet: Nov 16, 2011 6:24:54 PM An: "Keith Packard" <keithp at keithp.com> Betreff: Re: [PATCH 1/2] drm/i915: re-enable semaphores by default >On Wed, Nov 16, 2011 at 9:16 AM, Keith Packard <keithp at keithp.com> wrote: >> On Wed, 16 Nov 2011 16:49:40 +0100, Daniel Vetter <daniel.vetter at ffwll.ch> wrote: >> >>> So we need to check whether DMAR is enabled (on the >>> entire system, i.e. the variable exported for the ilk workaround is >>> not good enough) >> >> Can you figure out what *would* be sufficient? Getting semaphores turned >> on for the 99% who aren't enabling VT-d would be a fairly nice >> performance improvement. > >AFAICT my snb laptop has always been stable with semaphores and VT-d >enabled. Is this problem possibly restricted to just desktop >machines? I'm happy to test, since my box that can reproduce the hang >instantly is still around. > >Also, rc6-by-default would be very nice. It decreases the total power >consumption on my laptop from over 13W to around 8W. That's huge. > >--Andy >_______________________________________________ >Intel-gfx mailing list >Intel-gfx at lists.freedesktop.org >http://lists.freedesktop.org/mailman/listinfo/intel-gfx ___________________________________________________________ SMS schreiben mit WEB.DE FreeMail - einfach, schnell und kostenguenstig. Jetzt gleich testen! http://f.web.de/?mc=021192
