I guess it is a conflict with PRIME functionality, this is from the
Xorg.0.log:
[ 18.478] (--) PCI: (0:1:0:0) 10de:1292:1043:122d rev 161, Mem @
0xf6000000/16777216, 0xe0000000/268435456, 0xf0000000/33554432, I/O @
0x0000e000/128, BIOS @ 0x????????/524288
You can try creating /etc/X11/xorg.conf.d/prevent-auto-gpu.conf, and
then reboot/re-login. Check your Xorg.0.log and that line should be
gone.
Section "ServerLayout"
Identifier "DefaultLayout"
Option "AutoAddGPU" "false"
EndSection
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https://bugs.launchpad.net/bugs/1230008
Title:
Bumblebee "optirun" or "primusrun" flashes screen for a moment before
launching apps
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