Wrong video port used at boot

[AshleyKirby]

Binary package hint: xorg

New installation of Ubuntu 10.10, 64-bit.

Video card is an nVidia 9600 GSO with VGA and DVI outputs.
Connected to monitor with the DVI connector.

Booting from Live CD works fine, and installation is carried out without a hitch.

After completing the installation process, the system attempts its first boot using the built in video drivers. After loading from Grub, the video goes dead and the system becomes unresponsive.

After some experimentation, I discovered that the system was booting successfully, but it was attempting to use the unconnected VGA output on my video card. After fighting with the driver settings and swapping various video cables back and forth, I was able to achieve video output from the DVI connection. Any workaround that doesn't involve fighting with multiple display cables would be acceptable until an actual fix is provided.

[Bryce Harrington (bryce)]

Sounds like a KMS bug. Kernel drm needs to quirk off the phantom output.

You will need to re-test this against natty. Make sure to run `apport-collect 690552` to collect info the developers will require before they can investigate the bug.

[Jeremy Foshee (jeremyfoshee)]

Hi AshleyKirby,

Please be sure to confirm this issue exists with the latest development release of Ubuntu. ISO CD images are available from http://cdimage.ubuntu.com/daily/current/ . If the issue remains, please run the following command from a Terminal (Applications->Accessories->Terminal). It will automatically gather and attach updated debug information to this report.

apport-collect -p linux 690552

Also, if you could test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text. Please let us know your results.

Thanks in advance.

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[Launchpad Janitor (janitor)]

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