recompile for using sdl and vnc

[nooroon]

Hello,

I'm using fedora 7 with xen 3.1 from binaries rpm.
I try to use the sdl display, but when i configure my VM with

*<graphics type='sdl'/>
*
no window pops up.
Thanks to goolgle, I've found someone how got the same issue, and it
seems that qemu-dm was not compile whith sdl support.
What is the best way to recompile qemu-dm whith sdl support?

In fact, I'd like to have sdl for local display of my VM, and vnc for
remote access to it.
What configuration should I use to do so?

Thanks

[Markus Armbruster]

"mathieu rohon"  writes:
> Hello,
>
> I'm using fedora 7 with xen 3.1 from binaries rpm.
> I try to use the sdl display, but when i configure my VM with
>
> *<graphics type='sdl'/>
>
> no window pops up.
> Thanks to goolgle, I've found someone how got the same issue, and it
> seems that qemu-dm was not compile whith sdl support.
> What is the best way to recompile qemu-dm whith sdl support?
>
> In fact, I'd like to have sdl for local display of my VM, and vnc for
> remote access to it.
> What configuration should I use to do so?
>
> Thanks

Support for the SDL display in libvirt is incomplete[*].  You'd have
to bypass libvirt to use it.

Are you sure you really need SDL?  It has a serious usability problem:
if you close its window, the PV framebuffer backend terminates, and
you have to reboot the guest to get another one[**].  Why can't you
stick to VNC?  It works fine locally.

Sorry, I can't answer you question on qemu-dm.

[*] https://bugzilla.redhat.com/show_bug.cgi?id=240233

[**] Actually, you can restart the backend by hand, if you know what
you're doing.  Cheesy hacks in the backend make this work.

[Daniel P. Berrange]

On Fri, Nov 23, 2007 at 11:22:17AM +0100, mathieu rohon wrote:
> Hello,
>
> I'm using fedora 7 with xen 3.1 from binaries rpm.
> I try to use the sdl display, but when i configure my VM with
>
> *<graphics type='sdl'/>
>
> no window pops up.
> Thanks to goolgle, I've found someone how got the same issue, and it
> seems that qemu-dm was not compile whith sdl support.
> What is the best way to recompile qemu-dm whith sdl support?
>
> In fact, I'd like to have sdl for local display of my VM, and vnc for
> remote access to it.

You can't have both. You have to choose one, and VNC is the only sane
one to choose. SDL sucks because if your X session dies, it kills the
SDL window & thus kills your VM. Not cool. The 'virt-viewer' program
can be used to popup a minimal window for a VNC display whether local
or remote.

Dan.

[nooroon]

With sdl display, I don't any mouse and keyboard issues, that's not the case
in VNC. Tha fact that te VM dies when the X session dies is not a matter for
me.
My aim is to have a Windows VM which works as if it was not in a VM. Thanks
to sdl display, the windows VM is more fluid. But I'd like to use VNC if I
can have the same result.

In a second hand, I'd like to have a local AND remote display. With VNC, I
can't have both at the same time. I though  that I could have it thanks to
SDL (for local) and VNC (for remote).

Is there a way, with VNC, to configure two access (local and remote) to the
VM at the same time?

2007/11/23, Daniel P. Berrange :
> On Fri, Nov 23, 2007 at 11:22:17AM +0100, mathieu rohon wrote:
> > Hello,
> >
> > I'm using fedora 7 with xen 3.1 from binaries rpm.
> > I try to use the sdl display, but when i configure my VM with
> >
> > *<graphics type='sdl'/>
> >
> > no window pops up.
> > Thanks to goolgle, I've found someone how got the same issue, and it
> > seems that qemu-dm was not compile whith sdl support.
> > What is the best way to recompile qemu-dm whith sdl support?
> >
> > In fact, I'd like to have sdl for local display of my VM, and vnc for
> > remote access to it.
>
> You can't have both. You have to choose one, and VNC is the only sane
> one to choose. SDL sucks because if your X session dies, it kills the
> SDL window & thus kills your VM. Not cool. The 'virt-viewer' program
> can be used to popup a minimal window for a VNC display whether local
> or remote.
> Dan.
>
> |=- Red Hat, Engineering, Emerging Technologies, Boston.  [phone]
> -=|
> |=-           Perl modules: http://search.cpan.org/~danberr/
>               -=|
> |=-               Projects: http://freshmeat.net/~danielpb/
> -=|
> |=-  GnuPG: 7D3B9505   F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B
> 9505  -=|

[Richard W.M. Jones]

mathieu rohon wrote:
> With sdl display, I don't any mouse and keyboard issues, that's not the case
> in VNC. Tha fact that te VM dies when the X session dies is not a matter for
> me.
> My aim is to have a Windows VM which works as if it was not in a VM. Thanks
> to sdl display, the windows VM is more fluid. But I'd like to use VNC if I
> can have the same result.

Have you tried virt-viewer (it's in recent Fedora) instead of vncviewer 
or the default virt-manager widget?

Also I've found that setting up libvirt to use a USB graphics tablet 
instead of the default PS/2 mouse improves mouse handling no end.
> In a second hand, I'd like to have a local AND remote display. With VNC, I
> can't have both at the same time. I though  that I could have it thanks to
> SDL (for local) and VNC (for remote).

VNC should support screen sharing, if that's what you want.  Or do you 
mean two separate displays?  Perhaps rdesktop would suit you.
> Is there a way, with VNC, to configure two access (local and remote) to the
> VM at the same time?

vncviewer -Shared.  Not sure if there is a virt-viewer option for this.

Rich.

[nooroon]

2007/11/27, Richard W.M. Jones :
> mathieu rohon wrote:
> > With sdl display, I don't any mouse and keyboard issues, that's not the
>
> case
> > in VNC. Tha fact that te VM dies when the X session dies is not a matter
>
> for
> > me.
> > My aim is to have a Windows VM which works as if it was not in a VM.
>
> Thanks
> > to sdl display, the windows VM is more fluid. But I'd like to use VNC if
>
> I
> > can have the same result.
>
> Have you tried virt-viewer (it's in recent Fedora) instead of vncviewer
> or the default virt-manager widget?
>
> Also I've found that setting up libvirt to use a USB graphics tablet
> instead of the default PS/2 mouse improves mouse handling no end.

Thanks to VNC USB tablet, the issue whith mouse synchronisation has
disappeared. But the VNC display is still less fluid than sdl display.
> In a second hand, I'd like to have a local AND remote display. With VNC, I
> > can't have both at the same time. I though  that I could have it thanks
>
> to
> > SDL (for local) and VNC (for remote).
>
> VNC should support screen sharing, if that's what you want.  Or do you
> mean two separate displays?  Perhaps rdesktop would suit you.
> > Is there a way, with VNC, to configure two access (local and remote) to
>
> the
> > VM at the same time?
>
> vncviewer -Shared.  Not sure if there is a virt-viewer option for this.

I'm using a classical VNC client. But even if i use the -shared option,
another client can't display the VM screen.
I think that the server embedded in qemu-dm is not configured to shared the
VM screen, and i can't find the way to configure this VNC server.

For information, I've tried the FC 8. In this release, the qemu-dm should
have been configured with sdl libs, and the sdl display is working for VM.

Rich.
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