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-   -   302.11 driver only allows native resolution settings of laptop DFP (http://www.nvnews.net/vbulletin/showthread.php?t=181959)

darinmiller 05-28-12 12:45 AM

302.11 driver only allows native resolution settings of laptop DFP
 
1 Attachment(s)
Config:
Distro: Ubuntu 12.04
Kernel: 3.2.0.24 kernel
X Server 1.12.1.902
PC: Dell m1530 laptop
Card: GeForce 8600M GT
FP Display: Seiko/Epson 1920x1200
NVidia driver: 302.07 and 302.11
Previous drivers (295 and prior) permitted many resolution options on my laptop screen (both via xrandr and nvidia-setting app). My only option now is 1920x1200. I tried adding metamodes to my xorg.conf file but the modes were ignored. By chance is the EDID info not properly discovered?

I also tried adding modes via xrandr, but those attempts also failed.

I am dreading that the answer is using Transform and/or viewportin/out xorg.conf configurations. Please say it isn't so. :)

Attachment 43968

AaronP 05-30-12 04:39 PM

Re: 302.11 driver only allows native resolution settings of laptop DFP
 
The issue is not that the EDID is not properly read, but that the driver is no longer injecting a bunch of modes that your monitor doesn't actually support into the mode pool. Now, the modes listed in the mode pool are the real modes being driven by the hardware, and any scaling is configured via the ViewPortIn, ViewPortOut, and/or Transform properties of the MetaMode, or via the xrandr transform options.

However, we do understand that it's not particularly easy right now to configure scaled modes. We're working on improvements to the driver to make that easier in the future.

AaronP 05-30-12 04:45 PM

Re: 302.11 driver only allows native resolution settings of laptop DFP
 
Oh, and I should mention that you don't need to edit xorg.conf to configure scaling modes. You can do it today via xrandr or nvidia-settings:
Code:

xrandr --output DVI-I-1 --scale 0.5x0.5
nvidia-settings -a CurrentMetaMode="DVI-I-1: nvidia-auto-select { ViewPortIn=960x600 }"

or if you have this commit I made to the xrandr command-line tool,
Code:

xrandr --output DVI-I-1 --scale-from 960x600


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