[Spice-devel] Spice console pixelated noise on display changes

Mitja Mihelič mitja.mihelic at arnes.si
Thu Jul 5 14:56:05 UTC 2018



On 19/06/2018 10:09, Victor Toso wrote:
> Hi,
>
> On Mon, Jun 18, 2018 at 04:23:32PM +0200, Mitja Mihelič wrote:
>>>> Does it work fine with remote-viewer?
> Question ^
>
>>>> You could try different image compression too,
>>>> e.g image-compression=off
>>>> https://people.freedesktop.org/~teuf/spice-doc/html/ch03.html
>>>>
>>>> Cheers,
>>>>           toso
>>>>
>>>>> Why would this be happening? Help would be very much
>>>>> appreciated.
>>>>>
>>>>> Kind regards,
>>>>> Mitja
>>>>>
>>> I would also try to download a new version of spice-html5 and use
>>> it directly to see if the problem is fixed.
>>>
>>> Note that you can set image compression using libvirt like
>>>
>>>     <graphics type='spice' port='5901' autoport='no'>
>>>       <image compression='auto_glz'/>
>>>     </graphics>
>>>
>>> (note the "image" element inside "graphics").
>>>
>>> Frediano
>> Where would I set those options?
> You must have access to the host which is the computer running
> qemu and run `virsh edit $domain` for the xml file
>
>          toso
Here are the sections containing the string "spice".

     <channel type='spicevmc'>
       <target type='virtio' name='com.redhat.spice.0'/>
       <address type='virtio-serial' controller='0' bus='0' port='3'/>
     </channel>
...
     <graphics type='spice' autoport='yes' keymap='en-us' 
defaultMode='secure' passwd='*****' passwdValidTo='1970-01-01T00:00:01'>
       <listen type='network' network='vdsm-ovirtmgmt'/>
       <channel name='main' mode='secure'/>
       <channel name='display' mode='secure'/>
       <channel name='inputs' mode='secure'/>
       <channel name='cursor' mode='secure'/>
       <channel name='playback' mode='secure'/>
       <channel name='record' mode='secure'/>
       <channel name='smartcard' mode='secure'/>
       <channel name='usbredir' mode='secure'/>
     </graphics>

Is there anything else I should be looking at?

Kind regards,
Mitja


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