[Bug 570892] Re: ACPI regression: black screen after boot, intel graphics

[Stefan Bader]

dmesg of 2.6.32-22: [   22.871992] [drm] i915 disabling kernel
modesetting for known bad device.

Problem as described sounds a bit like a modesetting issue. Strangely
this got disabled by default for Intel 855 graphics exactly between the
two kernels mentioned (-19 and -21). So dmesg of the -19 kernel would be
interesting. Also it may be worth trying i915.modeset=1 on the kernel
command line.

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ACPI regression: black screen after boot, intel graphics
https://bugs.launchpad.net/bugs/570892
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