I'm having difficulty enabling DRI3 in Debian bullseye. I added the following to my /usr/share/X11/xorg.conf.d/20-intel.conf. I'm using integrated Intel graphics on an Intel i5-6200U (4) @ 2.800GHz with Intel Skylake GT2 [HD Graphics 520].
~ > cat /usr/share/X11/xorg.conf.d/20-intel.conf
Section "Device"
Identifier "Intel Graphics"
Driver "intel"
Option "AccelMethod" "sna"
Option "TearFree" "true"
Option "DRI" "3"
EndSection
When I run xdpyinfo, I get the following
~ > xdpyinfo | grep -i "DRI"
DRI2
DRI3
which seems like good news, but when I check the log file, I get
~ > cat /var/log/Xorg.0.log | grep DRI
[ 6.333] (II) intel(0): [DRI2] Setup complete
[ 6.333] (II) intel(0): [DRI2] DRI driver: i965
[ 6.333] (II) intel(0): [DRI2] VDPAU driver: va_gl
[ 6.333] (II) intel(0): direct rendering: DRI2 enabled
[ 6.340] (II) Initializing extension DRI3
[ 6.375] (II) GLX: Initialized DRI2 GL provider for screen 0
[ 6.376] (II) Initializing extension XFree86-DRI
[ 6.376] (II) Initializing extension DRI2
which suggests that DRI3 is not enabled. How should I go about fixing this?
