[Intel-gfx] Regression: Screen goes black on KMS

[Keith Packard]

On Fri, 4 Nov 2011 23:28:07 +0100, Cedric Sodhi <manday at gmx.net> wrote:
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> Hello,
> 
> between 3.1 and cc03bbf1 on linux-next there has been a regression which
> causes the screen to go black (not blank, backlight is still lit) on
> KMS. The system runs fine in the background and, to all it seems, X even
> starts, but the screen is black and useless.

Please create a bugzilla entry on bugs.freedesktop.org that includes a
dmesg capture in working/not-working modes with drm.debug=6, and a dump
From intel_reg_dumper in both working and not-working modes. That'll
show how the device is mis-programmed, and with luck, show us where it
went wrong.

-- 
keith.packard at intel.com
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