sna acceleration is default option and I want to go back to
uxa because sna doesn't work after suspending on my laptop.
And it doesn't work just adding
/etc/X11/xorg.conf.d/20-intel.conf which contains
"Section "Device" Identifier "Intel Graphics" Driver "intel" Option "AccelMethod" "uxa" EndSection"
to make the switch.
cat /var/log/Xorg.0.log | grep -ie uxa -ie sna in terminal. The output is:
[ 4.142] (II) intel(0): SNA compiled: xserver-xorg-video-intel 2:2.99.910-0ubuntu1.6 (Timo Aaltonen <[email protected]>) [ 4.144] (II) intel(0): SNA initialized with Broadwell backend
And it seems that the UXA is not compiled or installed at the beginning.
Is there a way to switch to UXA under this situation?