do konzole napis "sudo gedit /usr/local/bin/startxgl.sh" (bez tech uvzovek) a vloz tam tohle
#!/bin/sh
Xgl -fullscreen :1 -ac -br -accel glx:pbuffer -accel xv:pbuffer &
sleep 4
export DISPLAY=:1
cookie="$(xauth -i nextract - :0 | cut -d ' ' -f 9)"
xauth -i add :1 . "$cookie"
exec gnome-session
uloz a pak spust ten hle prikaz "sudo chmod a+x /usr/local/bin/startxgl.sh" DULEZITE
potom spust "sudo mkdir -p /etc/X11/sessions"
a pak "sudo gedit /etc/X11/sessions/xgl.desktop"
a dej tam
[Desktop Entry]
Encoding=UTF-8
Name=Xgl
Exec=/usr/local/bin/startxgl.sh
Icon=
Type=Application
a uloz
restaruj xserver (CTRL+ALT+backspace)