[mythtv-users] NVIDIA
Tom Greer
trgreer at gmail.com
Fri Jan 12 04:53:02 UTC 2007
doug at parkercat wrote:
> Tom Greer wrote:
> > In other words, MythTV (and X) are formatting the output to 852x480 and
> > NVIDIA is scaling it to 1920x1080, then the plasma TV scales the image
> > back to 852x480.
>
> If I were you I'd put:
> Option "UseEDID" "FALSE"
> in your xorg.conf as described in the nVidia README.txt. Then your
> 852x480 modeline should be in effect. This should give you the best
> picture quality.
>
> Note that the pixel size of the video output has very little to do with
> MythTV's CPU consumption -- we have to decode the full frames of the
> video at full size, then the video card does appropriate scaling.
>
> -Doug
Doug,
Thanks for posting to my post (which appears to have been hijacked).
I've started down this road. Unfortunately, when I insert this, X rejects
all of my modelines and defaults to 640x480. I haven't figured out why
yet. I've loaded the HorizSync and VertRefresh settings from my owners
manual. The log files simply tell me:
(WW) NVIDIA(0): No valid modes for "852x480"; removing.
(WW) NVIDIA(0): No valid modes for "ATSC-1080-60i"; removing.
(WW) NVIDIA(0): Unable to validate any modes; falling back to the default
mode
(WW) NVIDIA(0): "nvidia-auto-select".
(WW) NVIDIA(0):
(II) NVIDIA(0): Validated modes:
(II) NVIDIA(0): "nvidia-auto-select"
(II) NVIDIA(0): Virtual screen size determined to be 640 x 480
I'm sure that I'm doing something wrong in my xorg.conf; but I can't see
where. Here are the monitor, device and screen sections:
Section "Monitor"
Identifier "Monitor0"
VendorName "Panasonic"
ModelName "42in EDTV"
HorizSync 15.7 - 45.0
VertRefresh 60.0 - 60.0
Option "ExactModeTimingsDVI" "true"
Option "ConnectedMonitor" "DFP"
Option "UseDisplayDevice" "DFP"
# Native resolution on this TV is 852x480
Modeline "852x480" 33.07 852 872 912 1068 480 483 488 516 -hsync
-vsync
ModeLine "ATSC-1080-60i" 74.2 1920 1960 2016 2200 1080 1082 1088
1125 interlace
Option "dpms"
Option "UseEdidDPI" "FALSE"
Option "DPI" "100 x 100"
EndSection
Section "Device"
Identifier "Videocard0"
Driver "nvidia"
Option "NVAGP" "2"
Option "XvmcUsesTextures" "True"
Option "UseEvents" "True"
EndSection
Section "Screen"
Identifier "Screen0"
Device "Videocard0"
Monitor "Monitor0"
DefaultDepth 24
SubSection "Display"
Viewport 0 0
Depth 24
Modes "852x480" "ATSC-1080-60i"
EndSubSection
EndSection
Any ideas?
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