Re: has the i915 "black screen" boot issue returned? [BISECTED]

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On Tue, 1 Feb 2011, Chris Wilson wrote:

> On Tue, 1 Feb 2011 07:05:16 -0500 (EST), "Robert P. J. Day" <rpjday@xxxxxxxxxxxxxx> wrote:
> >
> >   any new developments on this issue?
>
> Not really, the only thing left to confirm is whereabouts it goes wrong.
>
> About the only routine of significance is alse_set_backlight().
>
> Does a 'return ASLE_BACKLIGHT_FAILED;' as the first line of that function
> have a similar effect to the current hack?

  apparently, it does:

@@ -150,6 +150,8 @@ static u32 asle_set_backlight(struct drm_device *dev, u32 bclp)
        struct opregion_asle *asle = dev_priv->opregion.asle;
        u32 max;

+return ASLE_BACKLIGHT_FAILED; // rday
+
        if (!(bclp & ASLE_BCLP_VALID))
                return ASLE_BACKLIGHT_FAILED;



gives me a good boot.  this is the diff with relation to the recently
tagged 2.6.38-rc3.  anything else you want me to test?

rday

-- 

========================================================================
Robert P. J. Day                               Waterloo, Ontario, CANADA
                        http://crashcourse.ca

Twitter:                                       http://twitter.com/rpjday
LinkedIn:                               http://ca.linkedin.com/in/rpjday
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