(In reply to Stefan Dirsch from comment #17) > (In reply to Yakun Li from comment #16) > > (In reply to Stefan Dirsch from comment #14) > > > Hmm. Shot in the dark. Try with > > > > > > Section "Device" > > > Identifier "modesetting" > > > Driver "modesetting" > > > Option "AccelMethod" "none" > > > EndSection > > > > > > instead of > > > > > > Section "Device" > > > Identifier "modesetting" > > > Driver "modesetting" > > > EndSection > > > > > > (i.e. add this Option line) in /etc/X11/xorg.conf.d/90-nvidia.conf file. > > > > Hi, I tried with what you suggested, unfortunately it did not work, the > > corresponding log is attached. This 90-nvidia.conf file did not exist > > Weird. That means that the command 'prime-select nvidia' never finished. :-( > > > on the system and I created it with the content you shared. > > Well, that cannot work. Better remove it again. Hi, the following were the messages after running this command ``` ``` nvidia catched Preparing first configuration bbswitch module not found. NVIDIA card will not be powered off logout to switch graphics ``` ```