[mythtv-users] MX440/Radeon wars (Was: Hardware ideas)

[Hamish Moffatt]

On Fri, Jun 25, 2004 at 10:25:27AM -0700, Jarod Wilson wrote:
> On Friday 25 June 2004 06:20, Clyde Stubbs wrote:
> > Can you provide an example 
> > of how you've done this?
> 
> Its been on my web site for ages now, used by quite a few people:
> http://wilsonet.com/mythtv/XF86Config-SVid.txt
> 
> > I'm more than happy to test your 
> > claims if you can be a little more specific.
> 
> I don't have a PAL-specific config on hand, but change the HorizSync and 
> VertRefresh values to match PAL and change the TVStandard to PAL-whichever, 
> and you should be in business.

So set VertRefresh to 50-50, as you set 60-60 in your example?

What's the effect of running a refresh rate in X that doesn't match the
TV rate? Does the card really output the specified refresh rate, or is
it always 50 Hz out for PAL, for example?

To be honest I can't tell what I'm getting out of X. I have defined a
800x600x50 mode, but I'm not using it yet. The X log tells me what valid
modes exist:

(**) NVIDIA(0): Validated modes for display device TV-0:
(**) NVIDIA(0):      Default mode "800x600": 50.0 MHz, 48.1 kHz, 72.2 Hz
(**) NVIDIA(0):      Default mode "640x480": 25.2 MHz, 31.5 kHz, 60.0 Hz
(**) NVIDIA(0):      Mode "800x600x50": 33.2 MHz, 31.4 kHz, 50.0 Hz
(**) NVIDIA(0):      Default mode "800x600": 40.0 MHz, 37.9 kHz, 60.3 Hz
(**) NVIDIA(0):      Default mode "800x600": 36.0 MHz, 35.2 kHz, 56.2 Hz
(**) NVIDIA(0):      Default mode "400x300": 25.0 MHz, 48.1 kHz, 72.2 Hz (D)
(**) NVIDIA(0):      Default mode "400x300": 20.0 MHz, 37.9 kHz, 60.3 Hz (D)
(**) NVIDIA(0):      Default mode "400x300": 18.0 MHz, 35.2 kHz, 56.3 Hz (D)
(**) NVIDIA(0):      Default mode "320x240": 12.6 MHz, 31.5 kHz, 60.1 Hz (D)

but doesn't say which one it is actually using, only:

(II) NVIDIA(0): Setting mode "800x600"

which could be any of 3 different refresh rates.

Is the correct refresh rate (ie 50 Hz for me, 60 for you) required for
"experimental A/V sync" to work and be useful?


Thanks
Hamish
-- 
Hamish Moffatt VK3SB <hamish at debian.org> <hamish at cloud.net.au>