[mythtv-users] ATI fglrx MytTV issues [was Re: Looking for recommendations for PCI-E 1x video cards]

Darrin mtv at aperature.org
Thu Oct 16 00:22:10 UTC 2008

On Wed, Oct 15, 2008 at 10:59 AM, Arthur Green <arthur at phraction.org> wrote:

> Arthur Green wrote:
> [ ... ]
> > At a guess, the second problem might be interlace-related, although
> > the MythTV system is connected to my TV via VGA. Alternatively it's
> > caused by a misconfigured X11 configuration - unfortunately
> > definitive documentation on fglrx isn't easy to come by.
> I now have "unstacked" playback. After a lot of poking around trying to
> find the supported device options for ATI cards, I have the following
> device section in xorg.conf:
> Section "Device"
>         Identifier  "aticonfig-Device[0]-0"
>         Driver      "fglrx"
>         Option      "VideoOverlay" "off"
>         Option      "OpenGLOverlay" "off"
>         Option      "TexturedVideo" "on"
>         Option      "TexturedVideoSync" "on"
>         Option      "Textured2D" "on"
>         Option      "BackingStore" "on"
>         Option      "UseFastTLS" "1"
>         Option      "XAANoOffscreenPixmaps" "on"
>         Bus         "PCI:1:5:0"
> EndSection
> Things were complicated somewhat by the fact that xorg.conf is used to
> amend /etc/ati/amdpcsdb, which is what configures your X session. I
> somehow managed to get a dud entry into /etc/ati/amdpcsdb (I think
> related to TexturedXRender), which caused X to crash on startup. I have
> no idea why it's implemented this way - I recall AIX having similar
> quirks about 10 years ago. amdpcsdb is a text file in a rather terse
> format - I wouldn't have thought that it's any easier to parse than
> xorg.conf.
> I don't know if any of this is useful to anyone else - would it be
> worthwhile putting into the wiki? I'd be happy to write it up in more
> detail.
> Arthur

It may come in handy.  My SuSE machine has an ATI card in it and your post
is the first one I've seen so far with specific info for configuring the ATI
driver.  At the very least, I'm sure I'll be referring back to your email at
a later date when I've finally finished getting mythtv compiled.
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