IBM multiheaded display loses secondary head after dist-upgrade.

[Mike Power]

Binary package hint: xorg

I have a system with one IBM card that has a VGA port and a DVI port. I used to use these two ports as a multiheaded system in 9.04. Now that I have upgraded to 9.10 I am reduced to VGA. The DVI monitor is not activated by X (it is active on boot hence it is connected).

My xorg.conf:
Section "Screen"
        Identifier "Configured Screen Device"
        Monitor "Lenovo"
        Device "Configured Video Device"
        SubSection "Display"
                Depth 24
                Modes "1680x1050" "1280x1024" "1024x768" "640x480"
                Virtual 3360 1050
        EndSubSection
EndSection

Section "Device"
        Identifier "Configured Video Device"
        Option "Monitor-TMDS-1" "Lenovo"
        Option "Monitor-VGA" "Samsung"
EndSection

Section "Monitor"
        Identifier "Samsung"
        Modeline "1680x1050" 143.75 1680 1784 1960 2240 1050 1053 1059 1089 -hsync +vsync
        Option "PreferredMode" "1680x1050"
# VertRefresh 50 - 76
# HorizSync 30 - 83
EndSection

Section "Monitor"
        Identifier "Lenovo"
        Modeline "1680x1050" 143.75 1680 1784 1960 2240 1050 1053 1059 1089 -hsync +vsync
        Option "PreferredMode" "1680x1050"
# VertRefresh 50 - 76
# HorizSync 30 - 83
EndSection

[Mike Power (mpower)]

...
(==) No Layout section. Using the first Screen section.
(**) |-->Screen "Configured Screen Device" (0)
(**) | |-->Monitor "Lenovo"
(**) | |-->Device "Configured Video Device"
...
(II) intel(0): Output VGA1 using monitor section Lenovo
(**) intel(0): Option "PreferredMode" "1680x1050"
(II) intel(0): Output DVI1 has no monitor section
...
(II) intel(0): EDID for output DVI1
(II) intel(0): Output VGA1 connected
(II) intel(0): Output DVI1 disconnected
...
(WW) intel(0): Option "Monitor-TMDS-1" is not used
(WW) intel(0): Option "Monitor-VGA" is not used
(WW) intel(0): Option "PreferredMode" is not used
(--) RandR disabled

[Mike Power (mpower)]

It was not using the old options to map video ports to monitors. A little poking around and I got it to recognize a specific monitor for DVI1. However it still seems to think DVI1 is disconnected. Which is incorrected because the bios drives it on boot.

[Mike Power (mpower)]

...
(==) ServerLayout "Configured Server Layout"
(**) |-->Screen "Configured Screen1 Device" (0)
(**) | |-->Monitor "Samsung1"
(**) | |-->Device "Configured Video Device"
(**) |-->Screen "Configured Screen2 Device" (1)
(**) | |-->Monitor "Samsung2"
(**) | |-->Device "Configured Video Device"
...
(II) intel(0): Output VGA1 using monitor section Samsung1
(**) intel(0): Option "PreferredMode" "1680x1050"
(II) intel(0): Output DVI1 using monitor section Samsung2
(**) intel(0): Option "PreferredMode" "1680x1050"
...
(II) intel(0): EDID for output VGA1
(II) intel(0): Manufacturer: SAM Model: 254 Serial#: 1146106418
...
(II) intel(0): EDID for output DVI1
(II) intel(0): Output VGA1 connected
(II) intel(0): Output DVI1 disconnected

[Mike Power (mpower)]

...
(==) ServerLayout "Configured Server Layout"
(**) |-->Screen "Configured Screen1 Device" (0)
(**) | |-->Monitor "Samsung1"
(**) | |-->Device "Configured Video Device"
(**) |-->Screen "Configured Screen2 Device" (1)
(**) | |-->Monitor "Samsung2"
(**) | |-->Device "Configured Video Device"
...
(II) intel(0): Output VGA1 using monitor section Samsung1
(**) intel(0): Option "PreferredMode" "1680x1050"
(II) intel(0): Output DVI1 using monitor section Samsung2
(**) intel(0): Option "PreferredMode" "1680x1050"
...
(II) intel(0): EDID for output VGA1
(II) intel(0): Manufacturer: SAM Model: 254 Serial#: 1146106418
...
(II) intel(0): EDID for output DVI1
(II) intel(0): Output VGA1 connected
(II) intel(0): Output DVI1 disconnected

[Mike Power (mpower)]

This looks like it could be an intel specific problem.

I have taken it as far as I can with my limited knowledge

[Jason Roelofs (ubuntu-jameskilton)]

intel 945GM card. Dual screen was working fantastically with 9.04. dist-upgrade to 9.10, and I can't get my system to even see the connected monitor any more. xrandr -q simply prints out "DVI1 disconnected (normal left inverted right x axis y axis)", nothing I do changes that.

[Jason Roelofs (ubuntu-jameskilton)]

FYI: It looks like this is the requisite bug in the intel driver.

http://bugs.freedesktop.org/show_bug.cgi?id=23099

Found via: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/438435

[Mike Power (mpower)]

Not that bug, this bug http://bugs.freedesktop.org/show_bug.cgi?id=23842

[Vikram Dhillon (dhillon-v10)]

This issue was reported against karmic, so can you confirm if this issue exists with the most recent Lucid Lynx 10.04 Alpha release? ISO CD images are available at http://cdimage.ubuntu.com/releases/lucid/ . Thanks in advance.

[Mike Power (mpower)]

I'll test Monday when I get into work.

[Mike Power (mpower)]

Still not getting the second head to come up. Xorg log attached. Still getting no EDID reads for the second interface.

[Mike Power (mpower)]

Notes from the down stream bug "You'd probably need to try alpha3 when that's published, this is too old." Let me know when alpha3 has an iso ready to go and I'll retest.

[Bryce Harrington (bryce)]

On Thu, Feb 25, 2010 at 04:15:37AM -0000, Mike Power wrote:
> Notes from the down stream bug "You'd probably need to try alpha3 when
> that's published, this is too old." Let me know when alpha3 has an iso
> ready to go and I'll retest.

alpha3 is scheduled for tomorrow so plan on snagging it then.

[Mike Power (mpower)]

I tried this out yesterday. Alpha3 works great. Now I am running on both monitors. I do not see the bug anymore.