feffemannen,
Please run the tool intel_reg_dumper once when the screen is working correctly,
and once with it showing the blank screen / out-of-range error, and attach both
files. Comparing the register settings for them may highlight where the
problem is.
Perhaps would also be helpful to have an Xorg.0.log from the failed boot
and one from the working boot, to see how X is differing in its
capabilities detection.
However, ultimately I think this may be a KMS bug.
** Changed in: xserver-xorg-video-intel (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/734756
Title:
Blank screen when booting with external monitor
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