Comment 10 for bug 194760

I am still using Feisty Fawn so I don't have any issues running sudo dpkg-reconfigure xserver-xorg or using nvidia-settings to setup my dual head setup running 2 seperate screens (it's a Nvidia 6200 with agp and dvi). Now that I see this is happening, I am scared to upgrade. Please fix this issue. I also use a kvm, my ubuntu box vga out goes into the kvm and the dvi out goes to a lcd tv as my seperate screen. My windows box agp out goes into the other agp on the kvm. I own a 17" Princeton Synergy 714 and the other 17" LCD TV per xorg.conf is Philips PHL 17PF8946.

cat /proc/version_signature
Ubuntu 2.6.20-16.35-generic

cat /proc/driver/nvidia/version
NVRM version: NVIDIA UNIX x86 Kernel Module 100.14.23 Thu Oct 4 10:16:34 PDT 2007
GCC version: gcc version 4.1.2 (Ubuntu 4.1.2-0ubuntu4)

cat /proc/driver/nvidia/registry
VideoMemoryTypeOverride: 1
EnableVia4x: 0
EnableALiAGP: 0
NvAGP: 3
ReqAGPRate: 15
EnableAGPSBA: 0
EnableAGPFW: 0
SoftEDIDs: 1
Mobile: 4294967295
ResmanDebugLevel: 4294967295
FlatPanelMode: 0
DevicesConnected: 0
RmLogonRC: 1
VbiosFromROM: 0
ModifyDeviceFiles: 1
DeviceFileUID: 0
DeviceFileGID: 0
DeviceFileMode: 438
RemapLimit: 0
UseCPA: 4294967295
DetectPrimaryVga: 1
EnableBrightnessControl: 0
PanelPWMFrequency: 1018
PanelBrightnessLimits: 65280
UseVBios: 1
RMEdgeIntrCheck: 1

 cat /proc/driver/nvidia/cards/0
Model: GeForce 6200
IRQ: 23
Video BIOS: 05.44.a2.07.00
Card Type: AGP
DMA Size: 32 bits
DMA Mask: 0xffffffff
Bus Location: 01.00.0

cat /proc/devices | grep nvidia
195 nvidia

000a0000-000bffff : Video RAM area
000c0000-000c7fff : Video ROM

read-edid
Version: 1.4.1-2.1

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