From: Jesse Barnes <jbarnes@virtuousgeek.org>
To: Nick Bowler <nbowler@elliptictech.com>
Cc: Peter Clifton <pcjc2@cam.ac.uk>,
airlied@linux.ie, intel-gfx@lists.freedesktop.org,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Pekka Enberg <penberg@cs.helsinki.fi>,
Linus Torvalds <torvalds@linux-foundation.org>
Subject: Re: [Intel-gfx] [PATCH] drm/i915: disable LVDS downclock by default
Date: Thu, 14 Jan 2010 13:27:19 -0800 [thread overview]
Message-ID: <20100114132719.5b2151c6@jbarnes-piketon> (raw)
In-Reply-To: <20100114211610.GA2030@emergent.ellipticsemi.com>
On Thu, 14 Jan 2010 16:16:10 -0500
Nick Bowler <nbowler@elliptictech.com> wrote:
> Is it really a defective BIOS? I don't have my laptop handy right
> now, but the lower refresh mode is reported in the EDID and can be set
> successfully (no idea if the change actually does anything). However,
> there is a visible artifact whenever a transition occurs.
No, it's possible the BIOS has it right but we're failing to transition
gracefully.
Your platform should support automatic hardware frequency switching.
You could try disabling that (clear the has_pipe_cxsr field of your
driver struct in i915_drv.c) and see if the manual method works for you.
--
Jesse Barnes, Intel Open Source Technology Center
next prev parent reply other threads:[~2010-01-14 21:27 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-13 5:44 Linux 2.6.33-rc4 Linus Torvalds
2010-01-13 20:21 ` Linux 2.6.33-rc4, boot regression still exists Gene Heskett
2010-01-13 21:03 ` Linux 2.6.33-rc4 Pekka Enberg
2010-01-13 21:33 ` Jesse Barnes
2010-01-13 21:50 ` Pekka Enberg
2010-01-14 0:55 ` Jesse Barnes
2010-01-14 19:15 ` Pekka Enberg
2010-01-14 19:26 ` Jesse Barnes
2010-01-14 19:31 ` Nick Bowler
2010-01-14 20:18 ` Pekka Enberg
2010-01-14 20:28 ` Nick Bowler
2010-01-14 20:48 ` [PATCH] drm/i915: disable LVDS downclock by default Jesse Barnes
2010-01-14 20:58 ` [Intel-gfx] " Peter Clifton
2010-01-14 21:05 ` Linus Torvalds
2010-01-14 21:21 ` Jesse Barnes
2010-01-14 21:16 ` Nick Bowler
2010-01-14 21:27 ` Jesse Barnes [this message]
2010-01-14 21:25 ` Pekka Enberg
2010-01-14 21:51 ` Jesse Barnes
2010-01-15 1:15 ` Nick Bowler
2010-01-15 8:54 ` Pekka Enberg
2010-01-15 16:14 ` Thomas Meyer
2010-01-15 16:21 ` Pekka Enberg
2010-01-15 16:32 ` Nick Bowler
2010-01-15 16:46 ` Linus Torvalds
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