I'm having trouble getting DDC to work with my Dell P1110 and my Matrox
G550. No matter what options I add or remove from my device section I
get output similar to:
(II) MGA(0): I2C bus "DDC" initialized.
(II) MGA(0): I2C device "DDC:ddc2" registered.
(II) MGA(0): I2C device "DDC:ddc2" removed.
(II) MGA(0): I2C Monitor info: (nil)
(II) MGA(0): end of I2C Monitor info
(II) MGA(0): DDC Monitor info: (nil)
(II) MGA(0): end of DDC Monitor info
Oddly enough, when I run "X -configure" it reads the EDID information
successfully and puts the information it garners about the monitor into
the XF86Config.new file. I can also use the get-edid and parse-edid
utilities without a problem from both the command line and from within
an x-term. But loading up X normally or using "X -probeonly" I get the
above message. Output from read-edid and parse-edid looks like so:
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 0xc5743 "Matrox Graphics Inc."
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 successful
parse-edid: parse-edid version 1.4.1
parse-edid: EDID checksum passed.
# EDID version 1 revision 2
Section "Monitor"
# Block type: 2:0 3:ff
# Block type: 2:0 3:fc
Identifier "DELL P1110"
VendorName "DEL"
ModelName "DELL P1110"
# Block type: 2:0 3:ff
# Block type: 2:0 3:fc
# Block type: 2:0 3:fd
HorizSync 30-121
VertRefresh 48-160
# Max dot clock (video bandwidth) 280 MHz
# DPMS capabilities: Active off:yes Suspend:yes Standby:yes
Mode "1280x1024" # vfreq 85.024Hz, hfreq 91.146kHz
DotClock 157.500000
HTimings 1280 1344 1504 1728
VTimings 1024 1025 1028 1072
Flags "+HSync" "+VSync"
EndMode
# Block type: 2:0 3:ff
# Block type: 2:0 3:fc
# Block type: 2:0 3:fd
Can anyone give me a hint as to how to get DDC to work? While I can
hard code the sync values and such into the config file I'd prefer to
get the DDC working. It irks me that it doesn't work. The DDC worked
fine with an Nvidia card. Thanks,
-Scott
--
Scott Lampert
<[EMAIL PROTECTED]>
"They that can give up essential liberty to obtain a little temporary
safety deserve neither liberty nor safety."
-Benjamin Franklin, 1759
Public Key: http://www.lampert.org/public_key.asc
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