Comment 1 for bug 194760

$ cat /proc/version_signature
Ubuntu 2.6.24-8.14-generic

$ cat /proc/driver/nvidia/version
NVRM version: NVIDIA UNIX x86 Kernel Module 169.09 Fri Jan 11 14:38:28 PST 2008
GCC version: gcc version 4.2.3 (Ubuntu 4.2.3-1ubuntu2)

$ cat /proc/driver/nvidia/registry
EnableVia4x: 0
EnableALiAGP: 0
NvAGP: 3
ReqAGPRate: 15
EnableAGPSBA: 0
EnableAGPFW: 0
Mobile: 4294967295
ResmanDebugLevel: 4294967295
RmLogonRC: 1
ModifyDeviceFiles: 1
DeviceFileUID: 0
DeviceFileGID: 0
DeviceFileMode: 438
RemapLimit: 0
UseCPA: 4294967295
UseVBios: 1
RMEdgeIntrCheck: 1

$ cat /proc/driver/nvidia/cards/0
Model: GeForce 8600 GT
IRQ: 16
Video BIOS: 60.84.35.00.00
Card Type: PCI-E
DMA Size: 40 bits
DMA Mask: 0xffffffffff
Bus Location: 01.00.0

$cat /proc/devices | grep nvidia
195 nvidia

$cat /proc/iomem | grep Video
000a0000-000bffff : Video RAM area
000c0000-000ccbff : Video ROM

$ dpkg -l read-edid | cat
read-edid 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