Public bug reported:
Binary package hint: kvm
Arguably a duplicate of #109358.
Using standard packages:
- ubuntu 8.10
- kvm 1:72+dfsg-1ubuntu6
- nvidia Quadro FX 570
When entering fullscreen in qemu/kvm (Ctrl-Alt-f) on a double-display TwinView
config, the guest SDL window will either:
- show up on half of your right screen, with the other half fallen off the
edge (i.e. invisible), or
- show up centered across both screens, leaving the unused space black,
depending on your xorg.conf settings.
As a comment in the bug referenced above states, the problem can be
worked around by adding meta modes, so one screen will be blank when
going fullscreen -- acceptable when running games or playing movies.
But this is not optimal. At least when using QEMU, I want to use the
second monitor as well. My workaround so far is:
- use the same resolution in the guest as the monitor qemu runs on
- use 'kvm -no-frame'
- position the qemu window so it uses one entire monitor
- set the window 'always on top'
(to disable always-on-top, you can use wmctrl for example: "wmctrl -r
QEMU -b toggle,above").
This achieves the same effect as a functional fullscreen switch does on
single displays.
The problem lies with the way SDL changes to fullscreen modes. Arguably
it should use NETWM/... commands to do so. I used some simple SDL code
to verify that fullscreen exhibits this problem, and that when calling
SDL_SetVideoMode() without SDL_FULLSCREEN and with SDL_RESIZABLE, the
GNOME keyboard shortcuts correctly put the window in fullscreen on a
single monitor.
** Affects: kvm (Ubuntu)
Importance: Undecided
Status: New
--
qemu/kvm incorrecty enters fullscreen when using nvidia twinview
https://bugs.launchpad.net/bugs/333000
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