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Message-ID: <Pine.LNX.4.64.1012291435580.10939@boston.corp.fedex.com>
Date: Wed, 29 Dec 2010 14:51:39 +0800 (SGT)
From: Jeff Chua <jeff.chua.linux@...il.com>
To: Linus Torvalds <torvalds@...ux-foundation.org>,
Chris Wilson <chris@...is-wilson.co.uk>,
Dirk Gouders <gouders@...bocholt.fh-gelsenkirchen.de>
cc: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: Linux 2.6.37-rc8
On Wed, Dec 29, 2010 at 9:18 AM, Linus Torvalds
<torvalds@...ux-foundation.org> wrote:
> The -rc8 release shouldn't be all that exciting. The most noticeable
> is probably the fact that hopefully the "blank screen" problem with
> intel graphics is fixed. But on the whole, it's all just a collection
> of random fixes all over.
> Chris Wilson (5):
> drm/i915/bios: Reverse order of 100/120 Mhz SSC clocks
For some reason, this does not work on my Lenovo X201s. Reverting the
commit solves the "blank screen" problem.
# lspci -v
00:02.0 0300: 8086:0046 (rev 02)
00:02.0 VGA compatible controller: Intel Corporation Core Processor
Integrated Graphics Controller (rev 02) (prog-if 00 [VGA controller])
Subsystem: Lenovo Device 215a
Flags: bus master, fast devsel, latency 0, IRQ 42
Memory at f2000000 (64-bit, non-prefetchable) [size=4M]
Memory at d0000000 (64-bit, prefetchable) [size=256M]
I/O ports at 1800 [size=8]
Expansion ROM at <unassigned> [disabled]
Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
Capabilities: [d0] Power Management version 2
Capabilities: [a4] PCI Advanced Features
Kernel driver in use: i915
Kernel modules: i915
# dmesg
[drm] Initialized drm 1.1.0 20060810
i915 0000:00:02.0: power state changed by ACPI to D0
i915 0000:00:02.0: power state changed by ACPI to D0
i915 0000:00:02.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16
i915 0000:00:02.0: setting latency timer to 64
i915 0000:00:02.0: irq 42 for MSI/MSI-X
vgaarb: device changed decodes:
PCI:0000:00:02.0,olddecodes=io+mem,decodes=io+mem:owns=io+mem
Console: switching to colour frame buffer device 180x56
fb0: inteldrmfb frame buffer device
drm: registered panic notifier
acpi device:02: registered as cooling_device4
input: Video Bus as
/devices/LNXSYSTM:00/device:00/PNP0A08:00/LNXVIDEO:00/input/input7
ACPI: Video Device [VID] (multi-head: yes rom: no post: no)
[drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 0
commit 448f53a1ede54eb854d036abf54573281412d650
Author: Chris Wilson <chris@...is-wilson.co.uk>
Date: Tue Dec 14 20:06:20 2010 +0000
drm/i915/bios: Reverse order of 100/120 Mhz SSC clocks
Fixes the lack of output on the LVDS panel of the Lenovo U160.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=31596
Reported-and-tested-by: Dirk Gouders <gouders@...bocholt.fh-gelsenkirchen.de>
Cc: stable@...nel.org
Signed-off-by: Chris Wilson <chris@...is-wilson.co.uk>
diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios.c
index b0b1200..2b20786 100644
--- a/drivers/gpu/drm/i915/intel_bios.c
+++ b/drivers/gpu/drm/i915/intel_bios.c
@@ -270,7 +270,7 @@ parse_general_features(struct drm_i915_private *dev_priv,
general->ssc_freq ? 66 : 48;
else if (IS_GEN5(dev) || IS_GEN6(dev))
dev_priv->lvds_ssc_freq =
- general->ssc_freq ? 100 : 120;
+ general->ssc_freq ? 120 : 100;
else
dev_priv->lvds_ssc_freq =
general->ssc_freq ? 100 : 96;
Thanks,
Jeff
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