As far as I rememeber there is a problem with the edid information was
broken.
Run with nvida propriatory driver:
michael@michael-desktop:~$ sudo get-edid
get-edid: get-edid version 2.0.0
Performing real mode VBE call
Interrupt 0x10 ax=0x4f00 bx=0x0 cx=0x0
Function supported
Call successful
VBE version 300
VBE string at 0x11100 "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
This might also be relevant:
http://lwn.net/Articles/517136/
search for:
@@ -120,6 +125,9 @@ static struct edid_quirk {
/* Samsung SyncMaster 22[5-6]BW */
{ "SAM", 596, EDID_QUIRK_PREFER_LARGE_60 },
{ "SAM", 638, EDID_QUIRK_PREFER_LARGE_60 },
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https://bugs.launchpad.net/bugs/1069194
Title:
nouveau does not recognize my Samsung Syncmaster 226BW
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https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-nouveau/+bug/1069194/+subscriptions
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