I first noticed it on a Samsung Q1 Ultra when trying to upgrade a Wubi 
9.04 install to a 9.10 alpha.  I figured the problem would be fixed by 
the final release, but I am having this problem with a fresh Wubi 9.10 
install.  After usplash, the screen keeps flashing with

[drm:intelfb_restore] *ERROR* Failed to restore crtc configuration: -22

until inactivity makes the screen go blank.

I would like to apply the i915.modeset=0 workaround.

Can you please indicate how, and where to enter the workaround?

I tried pressing the <e> key in grub, and adding a new line with 
"i915.modeset=0" and then using <Ctrl> + <x> key combination to boot, 
but I'm still getting the problem, so apparently this does not cause 
grub to pass the command to the kernel.

Can someone please tell me where I went wrong and what I should be doing 
differently?


Many thanks,

Chris


Loïc Minier wrote:
> ** Tags added: regression-release
>
> ** Description changed:
>
>   Updated the system to Ubuntu karmic (9.10), now XWindows will not start
>   and I get the error:
>   
>   [drm:intelfb_restore] *ERROR* Failed to restore crtc configuration: -22
>   
>   Did a search for this error on google and I cannot find anything online
>   to fix the problem.
> + 
> + Workaround:
> + Add i915.modeset=0 to the kernel cmdline args
>
> ** Description changed:
>
> - Updated the system to Ubuntu karmic (9.10), now XWindows will not start
> - and I get the error:
> + With Ubuntu 9.10/karmic on Samsung Q1U which have a VGA output, Xorg
> + doesn't start:
>   
>   [drm:intelfb_restore] *ERROR* Failed to restore crtc configuration: -22
>   
> - Did a search for this error on google and I cannot find anything online
> - to fix the problem.
> - 
>   Workaround:
>   Add i915.modeset=0 to the kernel cmdline args
>
>

-- 
"Failed to restore crtc configuration: -22" on i915
https://bugs.launchpad.net/bugs/404421
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