https://bugs.freedesktop.org/show_bug.cgi?id=98146 --- Comment #15 from Darek Deoniziak --- Thanks, it was my fault after all. As I did mention earlier I had also file called 10-monitor.conf and in that file I had already added section for devices, that file was primarly loaded and overloaded settings from other files. I moved DRI settings to that file because I was sure it is being loaded: ... Section "Device" Identifier "Device0" Driver "intel" Option "DRI" "3" EndSection Section "Device" Identifier "Device1" Driver "radeon" Option "DRI" "3" EndSection Now output of cat /var/log/Xorg.0.log | grep DRI: [ 5.164] (**) intel(0): Option "DRI" "3" [ 5.304] (**) RADEON(G0): Option "DRI" "3" [ 5.390] (II) glamor: EGL version 1.4 (DRI2): [ 5.394] (II) RADEON(G0): [DRI2] Setup complete [ 5.394] (II) RADEON(G0): [DRI2] DRI driver: radeonsi [ 5.394] (II) RADEON(G0): [DRI2] VDPAU driver: radeonsi [ 5.395] (**) RADEON(G0): DRI3 enabled [ 5.513] (II) intel(0): [DRI2] Setup complete [ 5.513] (II) intel(0): [DRI2] DRI driver: i965 [ 5.513] (II) intel(0): [DRI2] VDPAU driver: va_gl [ 5.513] (II) intel(0): direct rendering: DRI2 DRI3 enabled [ 5.528] (II) GLX: Initialized DRI2 GL provider for screen 0 Checked problem: 1 not drawing content until resizing windowed mode applications with DRI_PRIME=1 is solved, 2 did not check yet running fullscreen games 3 programs are still flickering but slightly different and much less, 4 did not check yet running fullscreen games 5 had no chance yet to plug in my external monitor yet I will be doing some more tests later today and this weekend to see if other problems are solved too, will write info asap. Big thanks for all help so far. -- You are receiving this mail because: You are the assignee for the bug.