I'm testing GNOME live CD (20150909 snapshot) on a new notebook (Dell
Latitude E5450) with hybrid grafic:
00:02.0 VGA compatible controller: Intel Corporation Broadwell-U
Integrated Graphics (rev 09)
03:00.0 3D controller: NVIDIA Corporation GM108M [GeForce 830M] (rev
a2)
bubmblebee was installed from repo.
Attempt to start anything using discrete card results in
[ 1064.755339] [DEBUG][XORG] (--) using VT number 7
[ 1064.755345] [DEBUG][XORG] (II) systemd-logind: logind integration
requires -keeptty and -keeptty was not provided, disabling logind
integration
[ 1064.755351] [DEBUG][XORG] (II) xfree86: Adding drm device
(/dev/dri/card0)
[ 1064.755359] [ERROR][XORG] (EE) /dev/dri/card0: failed to set DRM
interface version 1.4: Permission denied
strace gives
9287 execve("/usr/bin/Xorg", ["Xorg", ":8", "-config",
"/etc/bumblebee/xorg.conf.nouveau", "-configdir",
"/etc/bumblebee/xorg.conf.d", "-sharevts", "-nolisten", "tcp", "
-noreset", "-verbose", "3", "-isolateDevice", "PCI:03:00:0"], [/* 18
vars */]