[Bug 55311] Since 3.7.1-17.1 radeon has no backlight when using vgaswitcheroo (regression)

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=55311





--- Comment #20 from Aximab <laurent.debian at gmail.com>  2013-04-13 21:20:23 ---
It seems you didn't read what follows in this page :p 

As mentionned I only comment the line which disable blacklight and now it is
working fine for me as well. Probably a better solution but don't know if it is
a good one ....:) :

# git diff  HEAD drivers/gpu/drm/i915/intel_lvds.c: 



--- a/drivers/gpu/drm/i915/intel_lvds.c
+++ b/drivers/gpu/drm/i915/intel_lvds.c
@@ -217,7 +217,7 @@ static void intel_disable_lvds(struct intel_encoder
*encoder)
                stat_reg = PP_STATUS;
        }

-       intel_panel_disable_backlight(dev);
+/*        intel_panel_disable_backlight(dev); */

        I915_WRITE(ctl_reg, I915_READ(ctl_reg) & ~POWER_TARGET_ON);
        if (wait_for((I915_READ(stat_reg) & PP_ON) == 0, 1000))

Good job anyway. If it is also working for you we might get our bug as a
duplicated of 59785. 
Regards

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