Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S966311AbaFSV7J (ORCPT ); Thu, 19 Jun 2014 17:59:09 -0400 Received: from mail-lb0-f180.google.com ([209.85.217.180]:55074 "EHLO mail-lb0-f180.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S966278AbaFSV7G (ORCPT ); Thu, 19 Jun 2014 17:59:06 -0400 MIME-Version: 1.0 In-Reply-To: <20140619160946.GX5821@phenom.ffwll.local> References: <20140619160946.GX5821@phenom.ffwll.local> Date: Fri, 20 Jun 2014 07:59:04 +1000 Message-ID: Subject: Re: [Intel-gfx] Display glitching (and possibly related lockup) in 3.16-rc1? From: Dave Airlie To: "Theodore Ts'o" , LKML , "intel-gfx@lists.freedesktop.org" Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 20 June 2014 02:09, Daniel Vetter wrote: > On Wed, Jun 18, 2014 at 12:14:55PM -0400, Theodore Ts'o wrote: >> Is this a known problem? >> >> On my T540p, occasionally the display will go black and then be >> completely locked. One time when this happened, the display started >> glitching and tearing (like what you might see if an analog display had >> a loose connector and it was being wiggled) when the system locked up, >> but the at least 75% of the time when the bug manifests, the screen goes >> black instead. >> >> This appears to only happen when the system is running on battery --- it >> doesn't seem to manifest if I'm plugged into the AC mains. And I've >> been typing an e-mail message when the system locks up, so I don't think >> it's related to DPMS or the screen saver kicking in. >> >> I can try to bisect this regression (3.15 didn't have this problem), but >> I thought I would ask first if this was a known problem. I don't know >> for certain that it's an i915 bug, but the symptoms do somewhat point in >> that direction, especially the display glitches. > > Doesn't ring a bell, but can you please boot with drm.debug=0xe and attach > dmesg here so we know what kind of hardware you have? Also any dying > breadths over netconsole or similar? Can't hurt to check that before doing > the bisect. > t540p are haswell. Dave. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/