From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jon Masters Subject: [bisected] offset display bug in i915 Date: Mon, 08 Nov 2010 05:18:32 -0500 Message-ID: <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 dallas.jonmasters.org (dallas.jonmasters.org [72.29.103.172]) by gabe.freedesktop.org (Postfix) with ESMTP id 16F3C9E7B5 for ; Mon, 8 Nov 2010 02:18:16 -0800 (PST) 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: Chris Wilson Cc: intel-gfx , Linux Kernel Mailing List List-Id: intel-gfx@lists.freedesktop.org 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. Here is the offending commit found through bisection: 219adae138513bae20b256f1946b9cb3b75ca05c is the first bad commit commit 219adae138513bae20b256f1946b9cb3b75ca05c Author: Chris Wilson Date: Thu Sep 16 23:05:10 2010 +0100 drm/i915: Cache LVDS EDID We assume that the panel is permenantly connected and that the EDID data is consistent from boot, so simply cache the whole EDID for the panel. Signed-off-by: Chris Wilson 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. Jon.