Re: Regression: i915 blank issue on kernel 3.1.0-rc3

From: Alex Davis
Date: Mon Oct 03 2011 - 17:11:19 EST

>From: Alex Davis <alex14641@xxxxxxxxx>
>To: "terraluna977@xxxxxxxxx" <terraluna977@xxxxxxxxx>; "linux-kernel@xxxxxxxxxxxxxxx" <linux-kernel@xxxxxxxxxxxxxxx>
>Sent: Sunday, September 25, 2011 9:37 AM
>Subject: Re: Regression: i915 blank issue on kernel 3.1.0-rc3
>I'm having the same problem.
>Please keep me on the CC list for this thread.
> I code, therefore I am

The following patch fixed my backlight issues:

diff --git a/drivers/gpu/drm/i915/intel_panel.c b/drivers/gpu/drm/i915/intel_panel.c
index a9e0c7b..6f56676 100644
--- a/drivers/gpu/drm/i915/intel_panel.c
+++ b/drivers/gpu/drm/i915/intel_panel.c
@@ -262,8 +262,6 @@ void intel_panel_disable_backlight(struct drm_device *dev)
         dev_priv->backlight_level = intel_panel_get_backlight(dev);
         dev_priv->backlight_enabled = false;
-    intel_panel_set_backlight(dev, 0);
 void intel_panel_enable_backlight(struct drm_device *dev)

I've been using it since yesterday morning with no issues.

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