[Openchrome-users] VIA SP8000 observations

[Thomas Hellström]

Xavier Bachelot wrote:

>Udo van den Heuvel wrote:
>  
>
>>Hello,
>>
>>Although the setup is much working better as I get along setting things
>>up I noticed this:
>>
>>video.device.unichrome_cpu_save:0 in .xine/config works better than
>>enabling this option (video is smooth now but is less smooth when enabled)
>>
>>Is this an openchrome issue or a xine specific problem?
>>
>>    
>>
>nope, only an incompatibility between "EnableAGPDMA" in xorg.conf and 
>unichrome_cpu_save in xine. You must only have one enabled at the same time.
>The one to be used might not be the same depending on the chipset, but I 
>guess the xorg option is prefered over the xine option. I'm pretty sure 
>Thomas has more insight.
>  
>
Yes.
unichrome_cpu_save should only be used when writing to the decoder over 
PCI.
That is if EnableAGPDMA is not used OR you are using a K8M800. (Not sure 
about P4M800 yet, maybe Ivor can shed some light on that one).

The menu problem is most likely due to a resource competition between X 
and the mpeg decoder. It's hard to do anything about that with the 
current drm architecture. I recommend you to try to disable unscaled OSD 
to see if that makes any difference. Unscaled OSD generates a huge 
amount of traffic between xine and the X server, particularly in 
fullscreen mode 32 bit.

>I guess we need a 'tips and tricks' page in the wiki, for the different 
>chipsets, different distro, etc... I'll try to find some time to begin 
>one, but I don't promise anything, I'm unfortunatly really short on free 
>time at the moment. Anyone feel free to beat me to it :-)
>
>  
>
Indeed. I'm in the same situation.

>Regards,
>
>Xavier
>
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