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Date: Thu, 14 Jan 2010 22:18:00 +0200
Message-ID: <84144f021001141218pa3cd71co76165532618145a8@mail.gmail.com>
Subject: Re: Linux 2.6.33-rc4
From: Pekka Enberg <penberg@cs.helsinki.fi>
To: Pekka Enberg <penberg@cs.helsinki.fi>,
       Jesse Barnes <jbarnes@virtuousgeek.org>,
       Linus Torvalds <torvalds@linux-foundation.org>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
       airlied@linux.ie
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On Thu, Jan 14, 2010 at 9:31 PM, Nick Bowler <nbowler@elliptictech.com> wrote:
> On 21:15 Thu 14 Jan ? ? , Pekka Enberg wrote:
>> OK, I think I am seeing a different kind of flicker now. It doesn't
>> happen anywhere as often as before (which is probably why I missed it
>> last night). The flicker is more like a flash of some other window
>> whereas the flicker before used to "shake" the screen.
>>
>> Does this ring a bell?
>
> Your symptoms sound identical to mine on my ThinkPad T500 laptop, as
> described in http://bugs.freedesktop.org/show_bug.cgi?id=25809.
>
> This is the patch I am currently applying locally which solves all my
> problems.
>
> diff --git a/drivers/gpu/drm/i915/intel_lvds.c b/drivers/gpu/drm/i915/intel_lvds.c
> index f4b4aa2..4fb5911 100644
> --- a/drivers/gpu/drm/i915/intel_lvds.c
> +++ b/drivers/gpu/drm/i915/intel_lvds.c
> @@ -914,7 +914,7 @@ static void intel_find_lvds_downclock(struct drm_device *dev,
> ? ? ? ?mutex_unlock(&dev->mode_config.mutex);
> ? ? ? ?if (temp_downclock < panel_fixed_mode->clock) {
> ? ? ? ? ? ? ? ?/* We found the downclock for LVDS. */
> - ? ? ? ? ? ? ? dev_priv->lvds_downclock_avail = 1;
> + ? ? ? ? ? ? ? dev_priv->lvds_downclock_avail = 0;
> ? ? ? ? ? ? ? ?dev_priv->lvds_downclock = temp_downclock;
> ? ? ? ? ? ? ? ?DRM_DEBUG_KMS("LVDS downclock is found in EDID. "
> ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?"Normal clock %dKhz, downclock %dKhz\n",

Should I try just this or combine it with Jesse's patch?
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