Re: [Qemu-devel] bad USB tablet update rate on qemu-1.0

[Andreas Färber]

Am 19.01.2012 17:40, schrieb Erik Rull:
> Erik Rull wrote:
>> Erik Rull wrote:
>>> Erik Rull wrote:
>>>> Anthony Liguori wrote:
>>>>> On 12/19/2011 03:33 PM, Erik Rull wrote:
>>>>>> Hi all,
>>>>>>
>>>>>> coming from qemu 0.14 the usbdevice tablet update rate gets really
>>>>>> bad in
>>>>>> qemu-1.0 with the same guest.
>>>>>
>>>>> What's the specific guest?
>>>>>
>>>>> Regards,
>>>>>
>>>>> Anthony Liguori
>>>>>
>>>>
>>>> It's a Windows XP guest. It was fine in 0.14
>>>>
>>>> Thanks.
>>>>
>>>> Best regards,
>>>>
>>>> Erik
>>>>
>>>
>>> Any progress here? I tested it on another CPU board there it was worse -
>>> only 1-2 cursor updates per second :-(
>>> I tried to use the wacom-tablet but didn't find a driver that works.
>>>
>>> Best regards,
>>>
>>> Erik
>>>
>>
>> Hi all,
>>
>> today I tested some stuff with VNC for remote access of the VM - there
>> the
>> update rate of the USB tablet (mouse cursor) was really great. So the
>> question is now:
>> - Same host operating system for 0.14 and 1.0
>> - Same command line parameters beside the vnc option
>> Why is the native mouse on the qemu 0.14 system good for both vnc and
>> native and on the qemu 1.0 system only good for vnc and bad for the
>> native
>> hardware mouse?
>>
>> Maybe this helps finding the source of evil...
>> If you have ideas what to change / patches to test, just let me know.
>>
>> Best regards,
>>
>> Erik
>>
> 
> Hi all,
> 
> I additionally tested -std vga to exclude that it might be related to
> the cirrus emulation - but same result. So there seems to be a
> difference between the captured cursor for the native X-Windows window
> and the VNC window that occured somewhere between 0.14 and 1.0.

Then try `git bisect start v1.0 v0.14.0' to find out when exactly the
perceived behavior changed. :)

Andreas

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