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