[mythtv-users] nVidia interlace problem

Alex Butcher mythlist at assursys.co.uk
Sun Nov 23 11:43:17 UTC 2008


On Sun, 23 Nov 2008, Paul Gardiner wrote:

> Alex Butcher wrote:
>> On Sat, 22 Nov 2008, Paul Gardiner wrote:
>> 
>>> Alex Butcher wrote:
>>>> On Tue, 18 Nov 2008, Paul Gardiner wrote:
>>>> 
>>>>> Alex Butcher wrote:
>>>>>> The Nouveau driver might be worth a look in due course; I last tried it 
>>>>>> in
>>>>>> March 2008 without much luck on my GF4 MX440, because the version 
>>>>>> shipped
>>>>>> with my distro wasn't new enough to include Xv support.
>>>>> What's the Nouveau driver? Is that connected with SuSE?
>>>> It's a fork of the 2D-only nv driver, including reverse-engineered 3D
>>>> acceleration and Xv. <http://nouveau.freedesktop.org/wiki/>
>>> Neither nv or nouveau work. They wont even produce a correct
>>> image, let alone correctly handle Xv.
>> 
>> When programmed for PAL/NTSC dotclocks, you mean?
>
> Yeah. They give a steady image, but nv has the whole
> desktop shifted by almost half a screen, with the part
> shifted off coming back on from the other side, and
> nouveau doesn't interleave the interlaces, displaying
> them one above the other.

Oh dear, that's pretty wonky!

> In neither case was I able to get accelerated playback.
> I'd just get a few frames a second.

On the other hand, that indicates that you're probably using a pretty old
version, since the wiki claims Xv is in these days.

> I also discovered that my headless backend has a Radeon
> X1250. I couldn't get that to work either. With the
> radeonhd driver, I couldn't get accelarated playback. With
> the propriety drivers, MythTV displays as loads of little
> random blocks (a known problem apparently).
>
> I've just ordered an anchient Radeon 7000 off ebay. I think
> this is my solution, It's a low profile PCI card. As my
> Radeon 9000 works perfectly with the radeon driver, I'm expecting
> the 7000 to work too. It looks almost small enough to plug into
> my current tiny fanless frontend, but probably not quite.

Good luck! Hope it works out for you better than my Radeon 7500 did for
me...

> Cheers,
> 	Paul.

Best Regards,
Alex.


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