From mboxrd@z Thu Jan 1 00:00:00 1970 From: Chris Wilson Subject: Re: [bisected] offset display bug in i915 Date: Mon, 08 Nov 2010 10:27:29 +0000 Message-ID: References: <1289211512.3916.383.camel@constitution.bos.jonmasters.org> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by gabe.freedesktop.org (Postfix) with ESMTP id ABE599E7B5 for ; Mon, 8 Nov 2010 02:27:32 -0800 (PST) In-Reply-To: <1289211512.3916.383.camel@constitution.bos.jonmasters.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org Errors-To: intel-gfx-bounces+gcfxdi-intel-gfx=m.gmane.org@lists.freedesktop.org To: Jon Masters Cc: intel-gfx , Linux Kernel Mailing List List-Id: intel-gfx@lists.freedesktop.org On Mon, 08 Nov 2010 05:18:32 -0500, Jon Masters wrote: > Hi Chris, > > The following patch that you recently committed breaks my ASUS Eee PC > 1015PEM by causing the display to be offset by about 1 inch (a few > centimeters) when the mode is (re)set during boot. I previously posted > both photographs and video of the problem in another "PROBLEM" thread. [snip] > I'll look at the patch. Either the EDID is *not* consistent (in which > case, why are we not seeing other bugs like this?) or there is something > specific to this system or panel used. Interesting. Or even downright bizarre! Can you disable the caching (hopefully the patch is still revertible) and save the EDID (/sys/class/drm/card0-LVDS-1/edid) periodically? Might be simplest just to dump the EDID every time we probe the LVDS if it has changed. -Chris -- Chris Wilson, Intel Open Source Technology Centre