Force xorg-video-intel to use Modeline 1080p
Stefan Keir Gordon
keir at keirgordon.com
Sat Feb 9 21:04:34 PST 2008
On a high level, I am trying to make a mac mini intel display 1920x1080 over
DVI.
Using Ubuntu Gutsy Gibbon, xorg-video-intel driver, hdmi->dvi cable to 1080
projector.
The projector (pt-ae2000u) gives invalid EDID readings, at completely wrong
resolutions, this is a known issue.
The intel driver (apparently) refuses to use my modeline, resorting either
to a default resolution or the EDID resolutions.
You can see how the EDID comes back invalid:
(II) intel(0): Printing probed modes for output TMDS-1
(II) intel(0): Modeline "1920x540"x120.1 74.25 1920 2008 2052 2200 540
542 547 562 interlace +hsync $
(II) intel(0): Modeline "1920x540"x100.1 74.25 1920 2448 2492 2640 540
542 547 562 interlace +hsync $
Of course 540 is not the correct vertical resolution, altho the intel driver
starts X up at this resolution (I can log in via VNC)
xorg.conf sections look like this, you can see i'm trying 720 or 1080, no
mention of either of them in xorg.0.log:
Section "Monitor"
Identifier "dvi"
Vendorname "Panasonic"
Modelname "PT-AE2000"
modeline "1280x720 at 50" 60.47 1280 1328 1456 1632 720 721 724 741
-hsync +vsync
Modeline "1920x1080" 148.5 1920 1960 2016 2200 1080 1082 1088 1125
-hsync +vsync
Gamma 1.0
EndSection
Section "Screen"
Identifier "Screen 0"
Device "Intel Corporation Mobile 945GM/GMS/940GML Express
Integrated Graphics Controlle$
Monitor "dvi"
Defaultdepth 24
Option "SecurityTypes" "VncAuth"
Option "UserPasswdVerifier" "VncAuth"
Option "PasswordFile" "/root/.vnc/passwd"
SubSection "Display"
Depth 24
Virtual 1920 1080
Modes "1920x1080" "1280x720 at 50"
EndSubSection
EndSection
Section "ServerLayout"
Identifier "Default Layout"
screen 0 "Screen 0" 0 0
Inputdevice "Generic Keyboard"
Inputdevice "Configured Mouse"
Inputdevice "stylus" "SendCoreEvents"
Inputdevice "cursor" "SendCoreEvents"
Inputdevice "eraser" "SendCoreEvents"
EndSection
Thank you in advance! I intended to figure this out and blog about it for
other users, but after a week I still have no solution.
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