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Bug#593432: Black screen with kms and i915



retitle 593432 [i830] Black screen with kms and i915
kthxbye

On Wed, Aug 18, 2010 at 07:53:29 +0200, sander@zedat.fu-berlin.de wrote:

> When booting the screen goes black at the moment the frame buffer is
> switched on.
> Booting continues until the 'login prompt', but the screen remains black. 
> When
> switching to a text screen, the screen gets darker for a second, but no
> text login
> appears.  I can then, however, login blind and the machine works.  For
> example,
> I can reboot it when logging in as root and calling 'shutdown' (all blind,
> of course).
> 
> The problem goes away when adding the line
> 
> options i915 modeset=0
> 
> to the file /etc/modprobe.d/i915-kms.conf, so I guess it is a kms problem.
> 
> If I wasn't a newbie I'd mark this bug as 'important', because it left a
> freshly installed machine more or less completely unusable.
> 
Is this a regression from a previous revision?  Can you attach the dmesg
from a kms boot?

Cheers,
Julien

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