I have two displays connected. Display 0 of the computer itself, an Asus
UL30A. Display 1 would be the external DELL 2209WA, connected via VGA.
Both displays still do work but the external display is no longer
detected correctly as a 2209WA.
# get-edid | parse-edid
parse-edid: parse-edid version 2.0.0
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 "Intel(r)Cantiga Graphics Chip Accelerated VGA
BIOS"
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 supports 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
EDID claims 19 more blocks left
EDID blocks left is wrong.
Your EDID is probably invalid.
parse-edid: EDID checksum failed - data is corrupt. Continuing anyway.
parse-edid: first bytes don't match EDID version 1 header
parse-edid: do not trust output (if any).
# EDID version 19 revision 19
Section "Monitor"
Identifier "DXS:1313"
VendorName "DXS"
ModelName "DXS:1313"
# DPMS capabilities: Active off:no Suspend:no Standby:no
Mode "275x275" # vfreq 43.295Hz, hfreq 45.979kHz
DotClock 48.830000
HTimings 275 294 313 1062
VTimings 275 276 327 1062
EndMode
Mode "275x275" # vfreq 43.295Hz, hfreq 45.979kHz
DotClock 48.830000
HTimings 275 294 313 1062
VTimings 275 276 327 1062
EndMode
Mode "275x275" # vfreq 43.295Hz, hfreq 45.979kHz
DotClock 48.830000
HTimings 275 294 313 1062
VTimings 275 276 327 1062
EndMode
Mode "275x275" # vfreq 43.295Hz, hfreq 45.979kHz
DotClock 48.830000
HTimings 275 294 313 1062
VTimings 275 276 327 1062
EndMode
EndSection
--
unable to read edid information
https://bugs.launchpad.net/bugs/460471
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