[Bug 94994] Re: edidfail for widescreen lcd (viewsonic vg2030wm) causes incorrect resolution and refresh rates

[Michael Olson]

Same general idea, another datapoint?  I have a GeForce 7300 LE PCI
Express card and a 24" BenQ FP241VW monitor.  I've had all sorts of
difficulties with Xorg and with Gnome not wanting to run my monitor
above a 50Hz refresh rate.  Most of the time I can get Xorg to figure
things out if none of the modelines in Xorg.conf are correct.

molson at daedalus:/etc/powersave$ sudo xresprobe nvidia
id: 
res: 
freq: 
disptype: 
molson at daedalus:/etc/powersave$ sudo ddcprobe
vbe: VESA 3.0 detected.
oem: NVIDIA
vendor: NVIDIA Corporation
product: G72 Board - p280h18 Chip Rev
memory: 131072kb
mode: 640x400x256
mode: 640x480x256
mode: 800x600x16
mode: 800x600x256
mode: 1024x768x16
mode: 1024x768x256
mode: 1280x1024x16
mode: 1280x1024x256
mode: 320x200x64k
mode: 320x200x16m
mode: 640x480x64k
mode: 640x480x16m
mode: 800x600x64k
mode: 800x600x16m
mode: 1024x768x64k
mode: 1024x768x16m
mode: 1280x1024x64k
mode: 1280x1024x16m
edid: 
edidfail
molson at daedalus:/etc/powersave$ sudo get-edid | parse-edid
parse-edid: parse-edid version 1.4.1
get-edid: get-edid version 1.4.1

        Performing real mode VBE call
        Interrupt 0x10 ax=0x4f00 bx=0x0 cx=0x0
        Function supported
        Call successful

        VBE version 300
        VBE string at 0x11110 "NVIDIA"

VBE/DDC service about to be called
        Report DDC capabilities

        Performing real mode VBE call
        Interrupt 0x10 ax=0x4f15 bx=0x0 cx=0x0
        Function supported
        Call successful

        Monitor and video card combination does not support DDC1 transfers
        Monitor and video card combination does not support DDC2 transfers
        0 seconds per 128 byte EDID block transfer
        Screen is not blanked during DDC transfer

Reading next EDID block

VBE/DDC service about to be called
        Read EDID

        Performing real mode VBE call
        Interrupt 0x10 ax=0x4f15 bx=0x1 cx=0x0
        Function supported
        Call failed

The EDID data should not be trusted as the VBE call failed
Error: output block unchanged
parse-edid: IO error reading EDID

-- 
edidfail for widescreen lcd (viewsonic vg2030wm) causes incorrect resolution and refresh rates
https://bugs.launchpad.net/bugs/94994
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