Red Hat Bugzilla – Bug 523296
When Qemu/SDL is fullscreen xrandr dual-monitor configuration breaks.
Last modified: 2010-06-28 10:39:15 EDT
Description of problem:
When Qemu is toggled fullscreen xrandr configurations with two or more independent displays are reset to mirrored mode.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Setup a dual-monitor configuration for independent displays using the Display Settings applet.
2. Launch some guest OS with qemu.
3. Press CTRL+ALT+F to initiate fullscreen.
Qemu goes full screen but independent monitor configuration is lost.
So, the host multi-screen configuration is changed by launching qemu and making it fullscreen?
How exactly was qemu launched? Using the command line or libvirt? What is the exact qemu command line?
(Note, we don't really recommend people use qemu directly nor use the SDL display backend ... libvirt and the qemu VNC backend is what we put most effort into getting working properly.)
My guess this is an SDL or xrandr bug
"So, the host multi-screen configuration is changed by launching qemu and making
"How exactly was qemu launched?"
"What is the exact qemu command line?
/usr/bin/qemu-kvm -monitor stdio -boot c -m 384 -hda /home/bchrist/work/virt/winxp.img -net nic,vlan=0 -net user,vlan=0 -smb /home/bchrist -localtime -soundhw es1370 -sdl
"(Note, we don't really recommend people use qemu directly nor use the SDL
display backend ... libvirt and the qemu VNC backend is what we put most effort
into getting working properly.)"
Understood. There are several reasons why I do this:
1. I've been using qemu since kqemu was border-line closed-source and I'm familiar with it.
2. Frankly, VNC is slow. I can see the advantages on a server, but for a desktop you really need something much faster and SDL is the only option.
3. The problem with libvirt as that copying the OS from one computer to another is not a single-step process. Using qemu directly I can just copy the qcow2 file from my laptop, desktop, or any other computer I want. Last time I used VirtualMachine this was not true.
Okay, I'm going to move this to SDL
Summary is basically that SDL_SetVideoMode(SDL_FULLSCREEN) appears to screw up xrandr configuration; could just as easily be an X bug, so cc-ing ajax
I tested this and it seems that the results are also graphics driver dependant. Can you please test SDL-1.2.14 from rawhide/F-13.
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