Hey all, I'm running X inside lxc containers on ubuntu 16.04. The script I'm using to tweak lxc configuration to support X is http://kegel.com/linux/lxc-opengl-demo/install-x.sh.txt Seems to work fine for intel and nvidia, but for amd graphics (two different systems so far), it complains Fatal server error: AddScreen/ScreenInit failed for driver 0 strace shows that X can't open /proc/mtrr. Running startx as root works around the problem, but that shouldn't be needed. Can I buy a clue here? Thanks! - Dan
p.s. To reproduce: # Bring down X host$ sudo systemctl start multi-user.target # Create a container, add a user, give him sudo, start in foreground host$ sudo lxc-create -n video -t download -- --dist ubuntu --release xenial --arch amd64 host$ wget http://kegel.com/linux/lxc-opengl-demo/install-x.sh host$ sudo sh install-x.sh host video host$ sudo lxc-start -n vdeo host$ sudo lxc-attach -n video adduser fred host$ sudo lxc-attach -n video vi /etc/group # add fred to sudo group # Restart the container in the foreground host$ sudo lxc-stop -n vdeo host$ sudo lxc-start -n video -F # Log in to the guest as user fred, then: video$ wget http://kegel.com/linux/lxc-opengl-demo/install-x.sh # Alas, you have to run install-x.sh guest every time you start the container, to recreate /dev stuff. video$ sudo sh install-x.sh guest # Only if you're using nvidia hardware: Install nvidia driver that matches outer host. Careful. e.g. #video$ sudo apt install nvidia-340 # Finally, start x in the container video$ echo "exec xterm" > .xinitrc video$ startx -- vt9 This should give you an xterm with working keyboard and mouse, capable of running glxgears, etc. _______________________________________________ lxc-users mailing list [email protected] http://lists.linuxcontainers.org/listinfo/lxc-users
