Comment # 13 on bug 98146 from Darek Deoniziak

I'm still using DRI2, but the worst thing is the issues I thought were solved
are back.

Tried updating drivers (using oibaf ppa all the time) and using single file
with settings:
Section "Device" 
        Identifier      "Graphics"
        Option          "DRI"   "3"
EndSection

How can I make sure that it is actually used?
Also couldn't find configure script for intel to pass --enable-dri3.

The output of cat /var/log/Xorg.0.log | grep DRI is:
[     4.875] (II) glamor: EGL version 1.4 (DRI2):
[     4.880] (II) RADEON(G0): [DRI2] Setup complete
[     4.880] (II) RADEON(G0): [DRI2]   DRI driver: radeonsi
[     4.880] (II) RADEON(G0): [DRI2]   VDPAU driver: radeonsi
[     4.881] (==) RADEON(G0): DRI3 enabled
[     5.034] (II) intel(0): [DRI2] Setup complete
[     5.034] (II) intel(0): [DRI2]   DRI driver: i965
[     5.034] (II) intel(0): [DRI2]   VDPAU driver: va_gl
[     5.034] (II) intel(0): direct rendering: DRI2 enabled
[     5.055] (II) GLX: Initialized DRI2 GL provider for screen 0

Sorry for late comment, but I was trying to look around over the web to see if
someone had similar issues. Seems like people don't have many problems with
switching to DRI3.