Re: [Xen-users] OpenSuse 11 hvm domU: screen resolution up to 640x480

[jim burns <jim_burn@xxxxxxxxxxxxx>]

On Thu December 8 2011, 2:40:06 PM, Flavio wrote:
> On 8 December 2011 11:23, Flavio <fbcyborg@xxxxxxxxx> wrote:
> > I'm still in the long setup process.
> > 35% now.
> > I will let you know.
> 
> OK, I've finished the installation but KDM (and so KDE) doesn't start.
> What I can see in the vnc viewer is this: http://goo.gl/z9CaX
> But the system starts... if I do xl create opensuse12.cfg -c and I
> can get the login screen.
> Then if I want to "startkde", I have to perform the following command
> into a shell on the dom0:
> Xephyr -ac:1 -screen 1024x768

Interesting approach. I was going to suggest grabbing a vnc server package, 
and install it in your domu. Then when you want to connect, instead of 'xl 
vncviewer ...' (which connects to xen's builtin vnc server via the dom0's ip 
addr), you instead do 'vncviewer domu-ip-addr' to talk to the server in the 
domu. In my experience, this is slower than xen's builtin approach (other 
people on the list have said just the opposite), and a little glitchy in 
updating the display. I'll have to try this (Xephyr).

Another approach, if you ever get kde working on the domu, is to enable xdmcp 
logins from a remote computer. Then on the client, you do a 'switch user', in 
in the splash / login screen, click on the menu, and pick xdmcp login, and 
enter the domu ip addr in the box. If the domu has xdmcp enabled, you'll login 
at the full resolution of the client's screen.

Suse is kind of stiff in allowing enabling xdmcp. I'll have to review how to 
do it. Probably something in Yast.

> then in the domU:
> export DISPLAY="domU_IP:1"
> startkde

I think you mean "dom0_IP:1".

> In this case, the mouse is working and the screen resolution is the
> resolution I've set with Xephyr! Maybe this trick can be used even for the
> hvm domU.

Well, we've already gotten the hvm resolution up to 1024x768, which is what 
you are using with Xephyr above. But yes, it should work the same way except, 
kde is already working on the hvm install. You'd have to do a 'rcxdm stop', 
then 'export DISPLAY ...' and startkde.

And yes, the mouse would work. It's just like when you used ssh to login to 
the Yast install: you're using the mouse, keyboard & screen on the computer 
you login from with ssh (or Xephyr), not the ones on the domu. (X is a 
networking protocol. The program runs and does calculations on the domu, but 
sends display info over to the client - the dom0 in your case - and gets input 
- keyboard and mouse - from the client.)

> The only problem is that is very slow. But I think there are many other
> reasons for that.

One step forward, one step back. ;-)

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