Dear all,
this is my 2nd try to get an "Ubuntu Desktop" container running on a hosting
server using "Gentoo" at home. The server is used as a router, media server,
audio player. It is used and administrated "headless" via ssh. But it's
hardware is a vanilla PC and now it also should be usable as a workstation,
too. Because it is used on two other workstation, the aim is to run Ubuntu (as
possible 14.04 LTS).
At turn of the year I got time to do software updates, and now I'm using LXC
on/with
* linux-4.1.13-gentoo, with all lxc-checkconfig "green"
* lxc 1.1.5
* lxcfs 0.12
In principle, LXC is working well - I was able to "lxc-create" and successfully
start a Container with Ubuntu Trusty (name ubuntu) from the online repositories
without noteworthy problems. I was able to "apt update/upgrade", log in via
lxc-console and (after installing) sshd. Because it's my own server, I'm
currently running it in the privileged mode.
Then, I clone it (named celly) and add
lxc.cgroup.devices.allow = c 4:7 rwm # /dev/tty7 X Desktop
lxc.cgroup.devices.allow = c 4:8 rwm # /dev/tty8 X Desktop
lxc.cgroup.devices.allow = c 4:9 rwm # /dev/tty9 X Desktop
lxc.cgroup.devices.allow = c 29:0 rwm # /dev/fb0/* framebuffer device
lxc.cgroup.devices.allow = c 226:* rwm # /dev/dri/* video card devices
lxc.cgroup.devices.allow = c 13:* rwm # /dev/input/* input devices
lxc.mount.entry = /dev/tty7 dev/tty7 none bind,optional,create=file
lxc.mount.entry = /dev/tty8 dev/tty8 none bind,optional,create=file
lxc.mount.entry = /dev/tty9 dev/tty9 none bind,optional,create=file
lxc.mount.entry = /dev/dri dev/dri none bind,optional,create=dir
lxc.mount.entry = /dev/input dev/input none bind,optional,create=dir
to the stock configuration (which starts with lxc.include =
/usr/share/lxc/config/ubuntu.common.conf). This is added so far to reach-in
"physical access" to the desktop input/output devices. Because the host is used
for audio output purposes using pulseaudio, I plan to pass the audio of the
container via IP mechanisms, later.
Then I start and log in and 'atp install ubuntu-desktop'. Now - on my 2nd try
with recent Kernel and LXC and without fiddling with cgmanager - it almost was
ready to start out of the box: It boots on tty7, change to hires-graphics and
show the login manager. The mouse was working, but no the keyboard. To get it
working, I installed xserver-xorg-input-kbd and a
/etc/X11/xorg.conf.d/10-input.conf with
Section "ServerFlags"
Option "AutoAddDevices" "False"
EndSection
Section "ServerLayout"
Identifier "Desktop"
InputDevice "Mouse0" "CorePointer"
InputDevice "Keyboard0" "CoreKeyboard"
EndSection
Section "InputDevice"
Identifier "Keyboard0"
Driver "kbd"
Option "XkbLayout" "de"
EndSection
Section "InputDevice"
Identifier "Mouse0"
Driver "mouse"
Option "Protocol" "auto"
Option "Device" "/dev/input/mice"
Option "ZAxisMapping" "4 5 6 7"
EndSection
Then, I was able to log in and Unity was starting. First things I want to do
was to change some system settings via the GUI. We know, this is asking to
authenticate; the same is needed to install software or "update the system" via
the GUI. Now, the Dialogs working well, but then there is a dbus error
displayed. Using loginctl at command line, it turns out that there is a seat,
but no user session. It's the same if I log-in via ssh.
ubuntu@celly:~$ loginctl
SESSION UID USER SEAT
0 sessions listed.
ubuntu@celly:~$ loginctl list-seats
SEAT
seat0
1 seats listed.
Please, give me a hint what is missing or may not running or I should check
for, because I'm a server guy and not very familiar with what happens in
background on a desktop system. On my first try in last year to get this setup
running, there have been more and deeper problems, but this high-level one I
noticed, too. Now, it seems that the "Desktop Container" is just a few steps
away from being ready for operational tasks.
thank you in advance
Guido
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