I am running lxc2.0 container(privileged) on Ubuntu 16.0.4LTS 32-bit.
Inside the container I installed
mesa-utils that has the
my container config file
Template used to create this container: /usr/share/lxc/templates/lxc-download # Parameters passed to the template: --no-validate # For additional config options, please look at lxc.container.conf(5) # Uncomment the following line to support nesting containers: #lxc.include = /usr/share/lxc/config/nesting.conf # (Be aware this has security implications) # Distribution configuration lxc.include = /usr/share/lxc/config/ubuntu.common.conf lxc.arch = x86 lxc.cgroup.devices.allow = c 1:1 rwm lxc.cgroup.devices.allow = c 130:* rwm lxc.cgroup.devices.allow = c 124:* rwm lxc.cgroup.devices.allow = c 122:* rwm lxc.cgroup.devices.allow = c 123:* rwm lxc.cgroup.devices.allow = c 126:* rwm lxc.cgroup.devices.allow = c 127:0 rwm lxc.cgroup.devices.allow = c 120:0 rwm # Container specific configuration lxc.rootfs = /var/lib/lxc/mk7i_container/rootfs lxc.rootfs.backend = dir lxc.utsname = mk7i_container # Network configuration lxc.network.type = veth lxc.network.link = lxcbr0 lxc.network.flags = up lxc.network.hwaddr = 00:16:3e:c8:fd:1e #mounts for XServer DISPLAY lxc.mount.entry = /dev/dri dev/dri none bind,optional,create=dir lxc.mount.entry = /tmp/.X11-unix tmp/.X11-unix none bind,optional,create=dir lxc.mount.entry = /dev/video0 dev/video0 none bind,optional,create=file
To log in into the container as user 'Ubuntu', I am using the following command:
sudo lxc-console -n mk7i_container
After login, I set the
DISPLAY env variable as:
glxgears and it runs fine. I can see the Xwindow with gears moving in it.
However, after that I enter root mode via
sudo su command.
And try to run glxgears, but I get the following error:
No protocol specified Error: couldn't open display :0.0
Not sure why this error is coming. If user
ubuntu runs x apps fine , I expected root to do the same.
Anyone know what's wrong here ?