[Qemu-devel] HEAD qemu mouse stuck in bottom corner problem

[Qemu-devel] HEAD qemu mouse stuck in bottom corner problem

[Shaddy Baddah]

Hi,

I've built qemu from HEAD (as of yesterday) svn on my Ubuntu Gutsy 
Gibbon x86 release. Here is the uname -a output:

Linux <edited>-ubuntu 2.6.22-14-generic #1 SMP Tue Feb 12 07:42:25 UTC 
2008 i686 GNU/Linux

The problem I have with it is that for both Windows and Linux (a Knoppix 
boot session) guest system, once I click into the qemu window to grab 
the mouse, it is jumping to the bottom right most corner of the screen, 
and remaining stuck there. There seems no way to recover the mouse, so I 
have to hold ctrl-alt and get out of there.

I get around the problem sometimes by using vnc (-vnc :1) for the qemu 
display instead, but I don't know if this is also a known 
issue/limitation (I assumed so), that only gets you so far because the 
guest mouse does not track the host mouse at all accurately. So for the 
Windows guest, I get around the problem by waiting until the TCP stack 
is up, and connecting to the actually hosted VNC service (not qemu's 
in-built service that I activated).

I'd rather not do something so convoluted, so any help would be appreciated.

Thanks in advance,
Shaddy

Re: [Qemu-devel] HEAD qemu mouse stuck in bottom corner problem

[Piotras]

AFAIK the described behaviour is a consequence of a bug in SDL library.

You may try to set environment variable as a workaround:
> export SDL_VIDEO_X11_DGAMOUSE=0
> qemu ...


Hope this helps,

Piotr


On Fri, May 23, 2008 at 8:55 AM, Shaddy Baddah
<shaddy.baddah@shaddybaddah.name> wrote:
> Hi,
>
> I've built qemu from HEAD (as of yesterday) svn on my Ubuntu Gutsy Gibbon
> x86 release. Here is the uname -a output:
>
> Linux <edited>-ubuntu 2.6.22-14-generic #1 SMP Tue Feb 12 07:42:25 UTC 2008
> i686 GNU/Linux
>
> The problem I have with it is that for both Windows and Linux (a Knoppix
> boot session) guest system, once I click into the qemu window to grab the
> mouse, it is jumping to the bottom right most corner of the screen, and
> remaining stuck there. There seems no way to recover the mouse, so I have to
> hold ctrl-alt and get out of there.
>
> I get around the problem sometimes by using vnc (-vnc :1) for the qemu
> display instead, but I don't know if this is also a known issue/limitation
> (I assumed so), that only gets you so far because the guest mouse does not
> track the host mouse at all accurately. So for the Windows guest, I get
> around the problem by waiting until the TCP stack is up, and connecting to
> the actually hosted VNC service (not qemu's in-built service that I
> activated).
>
> I'd rather not do something so convoluted, so any help would be appreciated.
>
> Thanks in advance,
> Shaddy
>
>
>
>

Re: [Qemu-devel] HEAD qemu mouse stuck in bottom corner problem

[Shaddy Baddah]

Hi Piotr,

Piotras wrote:
> AFAIK the described behaviour is a consequence of a bug in SDL library.
>
> You may try to set environment variable as a workaround:
>   
>> export SDL_VIDEO_X11_DGAMOUSE=0
>> qemu ...
>>     
>
>
> Hope this helps,
>   

Yes, that worked for the QEMU window.

I still experience the mouse lag via VNC though, but I think that is a 
different phenomenon anyway.

Thank you very much.

Regards,
Shaddy

Re: [Qemu-devel] HEAD qemu mouse stuck in bottom corner problem

[Ben Taylor]

On Tue, Jun 3, 2008 at 5:01 AM, Shaddy Baddah
<shaddy.baddah@shaddybaddah.name> wrote:
> Hi Piotr,
>
> Piotras wrote:
>>
>> AFAIK the described behaviour is a consequence of a bug in SDL library.
>>
>> You may try to set environment variable as a workaround:
>>
>>>
>>> export SDL_VIDEO_X11_DGAMOUSE=0
>>> qemu ...
>>>
>>
>>
>> Hope this helps,
>>
>
> Yes, that worked for the QEMU window.
>
> I still experience the mouse lag via VNC though, but I think that is a
> different phenomenon anyway.
>

I too see a pretty big lag/difference in the mouse tracking VNC, such
that at times, it's a pretty huge annoyance.

Ben