I'd like to be able to debug this problem better, but I'll need someone
to give me directions on how to do that.

* When I use i915.modeset=0   I'm not even sure that the i915 driver is
used. Judging by the X log, it looks like a standard VESA driver is
being used, with the wrong display resolution.

* If I allow the system to boot up normally (to the flickering built in
display) vga_switcheroo is available, however when using i915.modeset=0
the vga-switcheroo option is no longer available.

* Booting up normally with  an external monitor sometimes results in the
KDE desktop showing up on the external monitor while the built in
display flashes. I can't always recreate this though.

Is this a case of the i915 driver not being able to function properly
only with the built in display?

Again, I'm having a hard time determining which driver (i915 or nouveau)
is currently being used, and I would love to debug this further, but I
dont know what to do next.

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https://bugs.launchpad.net/bugs/802026

Title:
  Booting results in flickering screen

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