[mythtv-users] S-video/nvidia problems

Bill Williamson bill at bbqninja.com
Fri Jul 30 11:49:49 UTC 2010


On Fri, Jul 30, 2010 at 1:28 PM, Nick Rout <nick.rout at gmail.com> wrote:
> On Fri, Jul 30, 2010 at 2:51 PM, Craig Huff <huffcslists at gmail.com> wrote:
>> Jessica,
>>
>> While I doubt that the amount of shared memory would affect the
>> ability to display on more than one screen concurrently, I've seen
>> stranger things.
>
> Not so strange really. If the video card is expected to display twice
> the pixels due to having twice the screen real estate, it needs twice
> the memory. (unless the screens are cloned)

If each display is 1080p (we know they're not) and at 24 bit color:

1920 * 1080 * 24bpp = 5.9 megabytes of framebuffer required per screen.

I don't mean to disuade anyone from helping anyone else, but it would
be REALLY strange if any pc sold in the last 5, or really ~8 years had
under 16mb of ram on the video card (or allocated via shared memory).


Long story short:  The 6150, in every incarnation, only has a single
DAC and thus analog output channel.  If her motherboard does not have
a DVI out for a second output the she is SOL without placing in a
graphics with two appropriate outputs.

We need to stop leading her down a wild goose chase.


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