Xen users - Feb 2008 - Some more differences between fc7 and fc8

dom0: fedora fc8, 2.6.21-2952.fc8xen, xen 3.1.2, xen.gz 3.1.0-rc7, fully up to 
date
domu: fedora fc8, 2.6.21-2950.fc8xen, no updates

I mostly do hvm, so I was a little surprised when I did my first pv install 
since fc7 to find that virt-manager/virsh use qemu-dm to run pv guests by 
passing the ''-M xenpv'' parameter. (Yes, James Harper, there
are open source
PV drivers!)

I had a little difficulty converting from an ''xm list -l
domid'' & ''virsh
dumpxml domid'' config to a flat xm config file. Where
 ''vif=[ ''00:16:3e:51:07:b8'' ]'' worked under
fc7, you now
need ''vif=[ ''mac=00:16:3e:51:07:b8'' ]''.

More importantly, was video support for vnc. What worked fine under virsh 
after the install somehow didn''t want to work for a flat xm config.
Turns out
that the individual lines that worked well under fc7:

vnc=1
keymap=''en-us''
vncunused=1
vncconsole=1

now have to have the vfb= syntax, such as:

vfb=[ ''type=vnc, keymap=en-us, vnclisten=0.0.0.0, vncunused=1''
]
vncconsole=1

and xm is still ignoring the vncconsole parm. Instead of a vnc window coming 
up automatically, you have to start it manually. And the odd thing is, the 
individual line syntax works fine for my hvm domain, and they are now both 
using qemu-dm?

My remaining problem is I can''t change the video resolution.
Gnome''s
system-config-display'' says the ''Xen Virtual Frame
Buffer'' is stuck at
800x600 and millions of colors. There is no other choice for resolution, and 
even picking thousands of colors, or picking the vesa driver results in X not 
starting. (Yeah, I know, vesa probably needs a real video card.) But the 
colors are ugly & garish, and highlighted sections of the screen are 
impossible to read. Anybody found a way to get higher resolution and/or 
better colors? Thanx.

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On Saturday 09 February 2008 06:54:04 pm you wrote:
> My remaining problem is I can''t change the video resolution.
Gnome''s  
> system-config-display'' says the ''Xen Virtual Frame
Buffer'' is stuck at
> 800x600 and millions of colors. There is no other choice for resolution,
> and even picking thousands of colors, or picking the vesa driver results in
> X not starting. (Yeah, I know, vesa probably needs a real video card.) But
> the colors are ugly & garish, and highlighted sections of the screen
are
> impossible to read. Anybody found a way to get higher resolution and/or
> better colors? Thanx.
This appears to be related to color options in vncviewer. Tightvnc''s
viewer
works with the ''-bgr233'' option, but other viewers default to
something like
rgb565, and are ignoring any changes to number of bits per pixel, with no 
option for bgr vs. rgb. This is true of fedora''s vnc-4.1.2-23.fc8
viewer. It
works correctly in virt-manager''s viewer the first time, but if you
close the
window & reopen it, you get the color mismatch.

The real question tho'' is why doesn''t this work out of the
box?

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