Bug#721871: i915: add quirk to invert backlight brightness
Hello,
I got a black screen with wheezy 3.2.55 kernel on a HP G62 Notebook,
but the issue is resolved in kernel 3.12.9.
Could you test the attached patch with kernel 3.2.55 that adds the
invert brightness quirk?
It seems that adding the quirk is the way to deal with this issue
with older kernel versions.
Best regards,
Emil Goode
>From 77ab7c26d3b886869b034b8752eca092f12e90c9 Mon Sep 17 00:00:00 2001
From: Emil Goode <emilgoode@gmail.com>
Date: Tue, 18 Feb 2014 18:09:50 +0100
Subject: [PATCH] drm/i915: add quirk to invert backlight brightness
The HP G62 Notebook and Lenovo IdeaPad Yoga 11S boot to a
black screen and need the invert brightness quirk.
Signed-off-by: Emil Goode <emilgoode@gmail.com>
---
drivers/gpu/drm/i915/intel_display.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 61b708b..54507c5 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -8932,6 +8932,12 @@ struct intel_quirk intel_quirks[] = {
/* Acer/Packard Bell NCL20 */
{ 0x2a42, 0x1025, 0x034b, quirk_invert_brightness },
+ /* HP G62 Notebook */
+ { 0x0046, 0x103c, 0x1439, quirk_invert_brightness },
+
+ /* Lenovo IdeaPad Yoga 11S */
+ { 0x0166, 0x17aa, 0x3977, quirk_invert_brightness },
+
/* Dell XPS13 HD Sandy Bridge */
{ 0x0116, 0x1028, 0x052e, quirk_no_pcm_pwm_enable },
/* Dell XPS13 HD and XPS13 FHD Ivy Bridge */
--
1.7.10.4
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