linux-kernel - Re: it *appears* the i915 black screen of death issue is back

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Message-ID: <BANLkTi=ck-zM8GMPeFq_vrZWkWnXo4ZP+Q@mail.gmail.com>
Date:	Sun, 10 Apr 2011 10:15:25 +0300
From:	Pekka Enberg <penberg@...nel.org>
To:	"Robert P. J. Day" <rpjday@...shcourse.ca>
Cc:	dri-devel@...ts.freedesktop.org,
	Chris Wilson <chris@...is-wilson.co.uk>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: it *appears* the i915 black screen of death issue is back

[ Fixing your CC list. ]

On Sun, Apr 10, 2011 at 9:35 AM, Robert P. J. Day <rpjday@...shcourse.ca> wrote:
>  when i built a new kernel based on the latest git tree, i once again
> got the black screen of death on my gateway laptop with an integrated
> intel graphics controller.
>
>  and as i did not that long ago, i got around it by applying the
> following tweak to the source tree before rebuilding:
>
> diff --git a/drivers/gpu/drm/i915/intel_opregion.c b/drivers/gpu/drm/i915/intel_opregion.c
> index d2c7104..a1a5d03 100644
> --- a/drivers/gpu/drm/i915/intel_opregion.c
> +++ b/drivers/gpu/drm/i915/intel_opregion.c
> @@ -152,6 +152,8 @@ 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;
>
>
>  so if this issue was resolved, it seems to have regressed.
>
> rday
>
> --
>
> ========================================================================
> Robert P. J. Day                                 Ottawa, Ontario, CANADA
>                        http://crashcourse.ca
>
> Twitter:                                       http://twitter.com/rpjday
> LinkedIn:                               http://ca.linkedin.com/in/rpjday
> ========================================================================
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> dri-devel@...ts.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/dri-devel
>
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