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PostPosted: Sat Sep 22, 2007 3:25 pm 
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Joined: Tue Mar 22, 2005 11:56 am
Posts: 110
Location: San Francisco
Don't you just love ressurecting old posts?

Well after a recent upgrade to R5F27, I was having problems getting decent output from my rig. Sleuthing over at nvnews.net was pretty good as it gave me the leads to a couple of options for the device section of my xorg.conf.

The first problem was the EDID from my panel was not reporting the native 1366x768 mode. It only wanted to go up to 1024x768. So without further ado:

Code:
Section "Device"
        #Option     "sw_cursor"
        #Option     "hw_cursor"
        #Option     "NoAccel"
        #Option     "ShowCache"
        #Option     "ShadowFB"
        #Option     "UseFBDev"
        #Option     "Rotate"
        Identifier  "Card0"
        Driver      "nvidia"
        VendorName  "All"
        BoardName   "All"
        Option          "ConnectedMonitor" "DFP"
        Option          "UseDisplayDevice" "DFP-0"
        Option          "ExactModeTimingsDVI"  "true"
        Option          "IgnoreDisplayDevices"  "TV"
        Option  "ModeValidation"        "NoDFPNativeResolutionCheck, NoWidthAlignmentCheck"

#       BusID       "PCI:1:0:0"
EndSection


"NoDFPNativeResolutionCheck, NoWidthAlignmentCheck" seemed to be the winners. The EDID was reporting the highest resolution for DFP at 1024x768 value and X just tossed any modeline that exceed it (like my sought after white whale: 1366x768). The "NoWidthAlignmentCheck" suppressed the 'multiple of 8' problem.

so now my XLog is happily reporting:
Code:
(II) NVIDIA(0): Setting mode "1366x768"

_________________
R5F27 | M2NPV-VM | 4600+ 65W AM2X2 | CORSAIR TWIN2X1024A-6400 | 2x HD-5000 |
DVI to HP LC3700N


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