Messages in this thread Patch in this message | | | Date | Wed, 29 Dec 2010 14:51:39 +0800 (SGT) | From | Jeff Chua <> | Subject | Re: Linux 2.6.37-rc8 |
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On Wed, Dec 29, 2010 at 9:18 AM, Linus Torvalds <torvalds@linux-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@chris-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@et.bocholt.fh-gelsenkirchen.de> Cc: stable@kernel.org Signed-off-by: Chris Wilson <chris@chris-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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