https://bugs.freedesktop.org/show_bug.cgi?id=64746 --- Comment #6 from Emil Velikov --- Hmm something unusual is happening here * the var/messages does not indicate any writes to vgaswitcheroo/switch * the Xorg.log still indicates that the intel card is setup and used as primary So to get a better picture (including timeline) can you do the following 1. Toggle/switch to the nv card $ cat /sys/kernel/debug/vgaswitcheroo/switch $ echo "0000:01:00.0" /sys/kernel/debug/vgaswitcheroo/switch 2. Confirm that the nv card is used (paste the output in your reply) $ cat /sys/kernel/debug/vgaswitcheroo/switch 3. Start X $ init 5 #startx # systemd start {g,k,x}dm and then attach the output of the following (plain text, please) * dmesg * Xorg.0.log * LIBGL_DEBUG=verbose glxinfo * LIBGL_DEBUG=verbose DRI_PRIME=1 glxinfo Thanks -- You are receiving this mail because: You are the assignee for the bug.