在 Ubuntu GNOME 15.04 的全新安装中，我在安装 Nvidia 专有驱动程序后看到以下屏幕：
starting version 219
[ OK ] Started ACPI event daemon.
Starting ACPI event daemon...
_
Xorg.0.log 的最后几行：
<snip>
[ 3.660] (II) intel(G0): [DRI2] Setup complete
[ 3.660] (II) intel(G0): [DRI2] DRI driver: i965
[ 3.660] (II) intel(G0): [DRI2] VDPAU driver: i965
[ 3.660] (II) intel(G0): direct rendering: DRI2 enabled
[ 3.660] (II) intel(G0): hardware support for Present enabled
[ 3.660] (EE) modeset(G1): drmSetMaster failed: Invalid argument
[ 3.660] …