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Old 02-07-07, 04:41 PM   #1
mihanson1
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Join Date: Feb 2007
Location: Los Angeles
Posts: 1
Lightbulb Disabling Backend Resolution with 9746

Hi,
Since NVIDIA has introduced this new Native Resolution/Backend Resolution/Frontend Resolution stuff in the 9746 driver (I'm guessing in all the 9xxx series drivers), I can no longer get a true 1080i or 720p image displayed on my Westinghouse LVM-37w1 monitor. I am using a MSI NX6200AX-TD128LF (6200A) AGP card and my monitor is connected to it by DVI. I am using Knoppmyth R5E50, which is Debian Sid based and uses MythTV 0.20. My monitor's EDID feeds the NVIDIA driver the following resolutions:
(II) NVIDIA(0): --- Modes in ModePool for WDE LVM-37w1 (DFP-0) ---
(II) NVIDIA(0): "nvidia-auto-select" : 1920 x 1080 @ 59.9 Hz (from: EDID)
(II) NVIDIA(0): "1920x1080" : 1920 x 1080 @ 59.9 Hz (from: EDID)
(II) NVIDIA(0): "1920x1080_60" : 1920 x 1080 @ 59.9 Hz (from: EDID)
(II) NVIDIA(0): "1280x1024" : 1280 x 1024 @ 75.0 Hz (from: EDID)
(II) NVIDIA(0): "1280x1024_75" : 1280 x 1024 @ 75.0 Hz (from: EDID)
(II) NVIDIA(0): "1280x1024_60" : 1280 x 1024 @ 60.0 Hz (from: EDID)
(II) NVIDIA(0): "1152x864" : 1152 x 864 @ 75.0 Hz (from: EDID)
(II) NVIDIA(0): "1152x864_75" : 1152 x 864 @ 75.0 Hz (from: EDID)
(II) NVIDIA(0): "1024x768" : 1024 x 768 @ 75.0 Hz (from: EDID)
(II) NVIDIA(0): "1024x768_75" : 1024 x 768 @ 75.0 Hz (from: EDID)
(II) NVIDIA(0): "1024x768_70" : 1024 x 768 @ 70.1 Hz (from: EDID)
(II) NVIDIA(0): "1024x768_60" : 1024 x 768 @ 60.0 Hz (from: EDID)
(II) NVIDIA(0): "800x600" : 800 x 600 @ 75.0 Hz (from: EDID)
(II) NVIDIA(0): "800x600_75" : 800 x 600 @ 75.0 Hz (from: EDID)
(II) NVIDIA(0): "800x600_72" : 800 x 600 @ 72.2 Hz (from: EDID)
(II) NVIDIA(0): "800x600_60" : 800 x 600 @ 60.3 Hz (from: EDID)
(II) NVIDIA(0): "800x600_56" : 800 x 600 @ 56.2 Hz (from: EDID)
(II) NVIDIA(0): "640x480" : 640 x 480 @ 75.0 Hz (from: EDID)
(II) NVIDIA(0): "640x480_75" : 640 x 480 @ 75.0 Hz (from: EDID)
(II) NVIDIA(0): "640x480_73" : 640 x 480 @ 72.8 Hz (from: EDID)
(II) NVIDIA(0): "640x480_60" : 640 x 480 @ 60.0 Hz (from: EDID)
(II) NVIDIA(0): --- End of ModePool for WDE LVM-37w1 (DFP-0): ---
Because there is no true 1080i or 720p mode programmed into the EDID, the NVIDIA driver will scale 1080i or 720p to what it determines will be a "BestFit" for my monitor. When I select "Separate Video Modes for GUI and Playback" within MythTV I can get a little control back. As it stands now, I have 1920x1080i video being output to 1920x1080p; 1280x720p video being output to 1280x1024p and 720x480i video output to 800x600. All these at 60Hz. With the 8776 NVIDIA drivers I was able to get 1080i --> 1080i; 720p --> 720p. I tried using the EDID options in my xorg.conf file, but they are not able to get me where I want to be. If I disable EDID modes, my monitor will only start in NVIDIA's "mode of last resort," which is 800x600. Disabling the EDID all together results in the same behavior. I would like to request that NVIDIA includes options for override the Native Resolution/Backend Resolution/Frontend Resolution in the future. My Xorg.0.log and xorg.conf are attached in zip archive. Thanks.
Attached Files
File Type: zip xorg.zip (15.6 KB, 112 views)
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