[mythtv-users] Jaunty frontend performance on Intel 915/945

[Ken Mandelberg]

> From: "R. G. Newbury"<newbury at mandamus.org>
> Subject: Re: [mythtv-users] Jaunty frontend performance on Intel
> 	915/945
> To: Discussion about mythtv<mythtv-users at mythtv.org>
> Message-ID:<49F5C6E5.3030501 at mandamus.org>
> Content-Type: text/plain; charset=iso-8859-1; format=flowed
>
> Ken Mandelberg wrote:
>> >  I've upgraded a few laptops that from Ubuntu 8,10 to 9.04. These have
>> >  either Intel 915 or 945 graphics chips. I'm running the mythtv trunk.
>> >
>> >  The frontend performance has gotten much worse after the upgrade. The
>> >  video is jumpy at 720p or 1080i where it wasn't before.
>> >
>> >  I'm guessing that this is because of the Intel Xorg driver which moved
>> >  from 2.4.1 to 2.6.3 in the upgrade. Both Intel chips use the overlay xv
>> >  driver, and I made sure that XvPreferOverlay is on in xorg.conf. xvinfo
>> >  confirms that the overlay (not textured) is the default xv port as on 8.10.
>> >
>> >  Is there something else I'm missing. The performance is just too bad to
>> >  use on 9.04 as is.
>> >
> Were you using XvmC with the 2.4.1 series driver? XvmC was turned off
> starting with 2.6.0 (iirc) and has not been turned back on. If you were
> using XvMc you might want to try the later 2.5 series versions. And read
> the driver man page very carefully as changes to the settings on
> xorg.conf can make quite a difference to the performance.
>
> Geoff
>

No, I checked the Xorg logs and

(==) intel(0): Intel XvMC decoder disabled

showed both on Intrepid and Jaunty. In fact I can't see any significant 
different in the logs, yet the performance is much worse in Jaunty.