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<b><a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO --- - Backlight control broken on Dell XPS13 w/ kernel 3.14-rc7"
href="https://bugs.freedesktop.org/show_bug.cgi?id=76276#c15">Comment # 15</a>
on <a class="bz_bug_link
bz_status_NEEDINFO "
title="NEEDINFO --- - Backlight control broken on Dell XPS13 w/ kernel 3.14-rc7"
href="https://bugs.freedesktop.org/show_bug.cgi?id=76276">bug 76276</a>
from <span class="vcard"><a class="email" href="mailto:jani.nikula@intel.com" title="Jani Nikula <jani.nikula@intel.com>"> <span class="fn">Jani Nikula</span></a>
</span></b>
<pre>Please do all of the above, and additionally try this hack:
diff --git a/drivers/gpu/drm/i915/intel_panel.c
b/drivers/gpu/drm/i915/intel_panel.c
index cb058408c70e..a07c8fa7aed0 100644
--- a/drivers/gpu/drm/i915/intel_panel.c
+++ b/drivers/gpu/drm/i915/intel_panel.c
@@ -1065,6 +1065,8 @@ int intel_panel_setup_backlight(struct drm_connector
*connector)
unsigned long flags;
int ret;
+ return 0;
+
/* set level and max in panel struct */
spin_lock_irqsave(&dev_priv->backlight_lock, flags);
ret = dev_priv->display.setup_backlight(intel_connector);</pre>
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