Alternatively you can switch to the modesetting driver - it works well here On Wed, 16 Nov 2016 at 01:33 Mario Kleiner <mario.kleiner.de at gmail.com> wrote: > On 11/15/2016 09:25 AM, Shawn Starr wrote: > > On Monday, November 14, 2016 3:40:17 PM EST Shawn Starr wrote: > >> On Monday, November 14, 2016 10:40:17 AM EST Michel Dänzer wrote: > >>> On 13/11/16 06:59 AM, Shawn Starr wrote: > >>>> I'm currently trying the new fence patches that prevent tearing in > PRIME > >>>> on > >>>> Bonaire CIK, it works with no tearing with latest patches from Mario, > >>>> but > >>>> there is significant frame stalls, even though the performance is > higher > >>>> than running the AMDGPU as dedicated. > >>> > >>> Please elaborate on what "frame stalls" means exactly. > >> > >> It looks like vsync issues, even though if I try vblank_mode=# it still > >> shows stalling. > >> > >> I'll have to make a video to show the results and post link here. > >> > >> Thanks, > >> Shawn > > > > So, It turns out to be KDE (Kwin) fault, if I start a GNOME session, and > run > > Valley, no such stalls. Even though I told KWIN to disable Vsync > completely > > and disable composite on full screen windows. Seems it doesn't work > right. > > > > Consider the PRIME patches working for me. > > > > Thanks, > > Shawn > > > > > > Glad it works for you with GNOME. > > Wrt. Kwin, KWin doesn't unredirect fullscreen windows if the display > iGPU is Intel, apparently because sometime in the past there were bugs > in the intel ddx related to switching between redirected and > unredirected mode. That might explain the problem under KDE. > > You'd need to disable the compositor manually (SHIFT + ALT + F12 to > toggle at runtime) while running a fullscreen app/game that way, or the > application needs to set some NetWM hints on its window to ask for no > composition, or some KWin rule needs to be set for the app. I tested the > patches under KDE Plasma 5 (KUbuntu 16.04 LTS) with composition disabled > this way and at least my tests worked fine then. > > -mario > _______________________________________________ > amd-gfx mailing list > amd-gfx at lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/amd-gfx > -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://lists.freedesktop.org/archives/amd-gfx/attachments/20161116/b715cfab/attachment.html>
