From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chris Wilson Subject: Re: Linux 2.6.37-rc8 (no fb) Date: Thu, 30 Dec 2010 18:36:45 +0000 Message-ID: <849307$av3koe@azsmga001.ch.intel.com> References: <20101229102127.06c0e505.randy.dunlap@oracle.com> Return-path: In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org To: Linus Torvalds , Randy Dunlap Cc: dri-devel@lists.freedesktop.org, Linux Kernel Mailing List , David Airlie List-Id: dri-devel@lists.freedesktop.org On Wed, 29 Dec 2010 11:40:04 -0800, Linus Torvalds wrote: > On Wed, Dec 29, 2010 at 10:21 AM, Randy Dunlap wrote: > > > > The only significant difference that I can see in the kernel message log > > is this: > > Hmm. I suspect that difference should have gone away with commit > 92971021c6328 (Revert "drm: Don't try and disable an encoder that was > never enabled"), but clearly that didn't fix your blank screen. > > Does reverting commit 448f53a1ede54eb854d036abf54573281412d650 > ("drm/i915/bios: Reverse order of 100/120 Mhz SSC clocks") fix it for > you? It does for some people.. > > Chris - why did that lvds_ssc_freq thing suddenly start mattering? Can > we please just disable spread-spectrum entirely? Or perhaps only if we > notice that it was enabled already? Or something? It appeared to be the easiest fix for the machines I had to hand and was confirmed by several people with identical machines. However, it definitely caused a regression for working panels and therefore it will be reverted. -Chris -- Chris Wilson, Intel Open Source Technology Centre