From mboxrd@z Thu Jan 1 00:00:00 1970 From: Anders Eriksson Subject: Re: Radeon jittery post 2.6.35 Date: Fri, 18 Mar 2011 09:55:52 +0100 Message-ID: <4D831E18.9020904@fastmail.fm> References: <4D7CCFC3.7030906@fastmail.fm> <4D7FD2FB.9090505@fastmail.fm> <4D8118EB.2070209@fastmail.fm> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <4D8118EB.2070209@fastmail.fm> Sender: linux-kernel-owner@vger.kernel.org To: Alex Deucher Cc: airlied@redhat.com, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, xorg-driver-ati@lists.x.org List-Id: dri-devel@lists.freedesktop.org On 03/16/11 21:09, Anders Eriksson wrote: > On 03/15/11 22:46, Alex Deucher wrote: > > Try booting with radeon.audio=0 on 2.6.38rc, some TVs have problems > > with the hdmi packets we send by default. disabling audio will treat > > the hdmi like dvi. > > > > Alex > You seem to be on to something there. radeon.audio=0 removes > what appears to be all of the jitter. I say "appear", because during > my many test runs today, I've come across moments where my brain > goes "wasn't what I just noticed on the TV something abnormal?" Both > in fb mode (post KMS), and in X11. It's definetly improved from useless > for family use, to perfectly ok though. > I was too early on this one. Yesterday (.38) , and today (38-rc8), are both jittery in post-KMS fb mode and in X, even though I use radeon.audio=0. A power cycling of the TV stabilizes it though. I'd be more than happy to test out any patches or ideas you might have. -A