[mythtv] problems with display of BBC HD using svn #23242

[Kenni Lund]

2010/1/23 Simon Kenyon <simon at koala.ie>:
> Mark Kendall wrote:
>>
>> 2010/1/23 Simon Kenyon <simon at koala.ie>:
>>>
>>> i will send a log tomorrow
>>> but it looks like the new code is asking for more resources than the old
>>> -
>>> and hit a limit
>>
>> I think that's exactly the problem - I just can't see where. What GPU
>> are you using and how much video memory does it have?
>
> this is an ASUSTeK M3N78-EM motherboard using the built in GeForce 8300
> graphics chip
>
> xorg says:
>
> (**) NVIDIA(0): Depth 24, (--) framebuffer bpp 32
> (==) NVIDIA(0): RGB weight 888
> (==) NVIDIA(0): Default visual is TrueColor
> (==) NVIDIA(0): Using gamma correction (1.0, 1.0, 1.0)
> (**) NVIDIA(0): Enabling RENDER acceleration
> (II) NVIDIA(0): Support for GLX with the Damage and Composite X extensions
> is
> (II) NVIDIA(0):     enabled.
> (II) NVIDIA(0): NVIDIA GPU GeForce 8300 (C77) at PCI:2:0:0 (GPU-0)
> (--) NVIDIA(0): Memory: 524288 kBytes
> (--) NVIDIA(0): VideoBIOS: 62.77.2f.00.00
> (--) NVIDIA(0): Interlaced video modes are supported on this GPU
> (--) NVIDIA(0): Connected display device(s) on GeForce 8300 at PCI:2:0:0:
> (--) NVIDIA(0):     CMO CMC 19" AD (CRT-0)
> (--) NVIDIA(0): CMO CMC 19" AD (CRT-0): 300.0 MHz maximum pixel clock
> (II) NVIDIA(0): Assigned Display Device: CRT-0
> (II) NVIDIA(0): Validated modes:
> (II) NVIDIA(0):     "1280x1024"
> (II) NVIDIA(0): Virtual screen size determined to be 1280 x 1024
> (--) NVIDIA(0): DPI set to (85, 86); computed from "UseEdidDpi" X config
> (--) NVIDIA(0):     option
> (==) NVIDIA(0): Enabling 32-bit ARGB GLX visuals.
> (--) Depth 24 pixmap format is 32 bpp
> (II) do I need RAC?  No, I don't.
>
> so without booting i would say i have set it up for 512M of video ram
> seems a lot, so will reboot to check

AFAIK, Xorg will write 512MB independent of the selection in the BIOS.
However, you DO want 512MB dedicated, as anything less than this, can
cause issues with VDPAU.

Taken from http://www.mythtv.org/wiki/VDPAU:
"Many playback issues can be resolved by making sure enough memory has
been allocated to the video card, 256MB is minimum requirement and
most results suggest 512MB is adequate. For on-board video this is
usually configured via the "GPU Window" BIOS option. "

Best Regards
Kenni Lund