Created attachment 159891 [details] screen In games with DRI_PRIME=1 radeon shows not stable image and some lags in scene, like in attachment with glxgears [vova7890@localhost ~]$ glxinfo | grep OpenGL OpenGL vendor string: Intel Open Source Technology Center OpenGL renderer string: Mesa DRI Intel(R) Ivybridge Mobile OpenGL core profile version string: 3.3 (Core Profile) Mesa 10.3.4 OpenGL core profile shading language version string: 3.30 OpenGL core profile context flags: (none) OpenGL core profile profile mask: core profile OpenGL core profile extensions: OpenGL version string: 3.0 Mesa 10.3.4 OpenGL shading language version string: 1.30 OpenGL context flags: (none) OpenGL extensions: OpenGL ES profile version string: OpenGL ES 3.0 Mesa 10.3.4 OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.0 OpenGL ES profile extensions: [vova7890@localhost ~]$ DRI_PRIME=1 glxinfo | grep OpenGL OpenGL vendor string: X.Org OpenGL renderer string: Gallium 0.4 on AMD HAINAN OpenGL core profile version string: 3.3 (Core Profile) Mesa 10.3.4 OpenGL core profile shading language version string: 3.30 OpenGL core profile context flags: (none) OpenGL core profile profile mask: core profile OpenGL core profile extensions: OpenGL version string: 3.0 Mesa 10.3.4 OpenGL shading language version string: 1.30 OpenGL context flags: (none) OpenGL extensions: OpenGL ES profile version string: OpenGL ES 3.0 Mesa 10.3.4 OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.0 OpenGL ES profile extensions: [vova7890@localhost ~]$ lspci | grep -i display 01:00.0 Display controller: Advanced Micro Devices, Inc. [AMD/ATI] Sun XT [Radeon HD 8670A/8670M/8690M] (rev ff) [vova7890@localhost ~]$ uname -a Linux localhost 3.17.1-pf #1 SMP PREEMPT Sat Dec 6 00:29:01 EET 2014 x86_64 GNU/Linux ---------------------------- CPU: Intel Core i7-3632QM GPU: Intel® HD Graphics 4000 / AMD Radeon HD 8670M, 1Gb xf86-video-intel: from git yesterday build(enabled DRI3) dirstro: ArchLinux
This is a limitation of prime at the moment. There is no cross device synchronization support yet. See also https://bugs.freedesktop.org/show_bug.cgi?id=76367
I have simmilar problem with a dual mobile radeon system. Is PRIME still under development?
(In reply to Adrian G from comment #2) > I have simmilar problem with a dual mobile radeon system. Is PRIME still > under development? Yes. It's a community developed feature.