Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754402AbbEMLKX (ORCPT ); Wed, 13 May 2015 07:10:23 -0400 Received: from mail.gondor.com ([78.47.100.206]:38367 "EHLO mail1.gondor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754067AbbEMLKW (ORCPT ); Wed, 13 May 2015 07:10:22 -0400 Date: Wed, 13 May 2015 13:10:11 +0200 From: Jan Niehusmann To: Sudip Mukherjee Cc: Jani Nikula , Thomas Gummerer , dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org, David Airlie , Daniel Vetter , Tvrtko Ursulin , Michael Leuchtenburg , Matt Roper Subject: Re: [BUG/REGRESSION] Screen flickering Message-ID: <20150513111010.GA7009@jannic.reliablesolutions.de> References: <87pp65efmo.fsf@hank.tgummerer.com> <87iobw3klc.fsf@intel.com> <20150513095319.GA4249@jannic.reliablesolutions.de> <20150513103224.GA8470@sudip-PC> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20150513103224.GA8470@sudip-PC> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1320 Lines: 26 On Wed, May 13, 2015 at 04:02:25PM +0530, Sudip Mukherjee wrote: > > What I'm missing in the report, are some log entries I'm seeing on my > > notebook: > > > > Apr 30 08:50:23 localhost kernel: [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe B FIFO underrun > > Apr 30 08:50:23 localhost kernel: [drm:intel_pch_fifo_underrun_irq_handler [i915]] *ERROR* PCH transcoder B FIFO underrun > > Apr 30 08:50:29 localhost kernel: [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun > > Apr 30 08:50:29 localhost kernel: [drm:intel_pch_fifo_underrun_irq_handler [i915]] *ERROR* PCH transcoder A FIFO underrun > hi, > I also have the similar entries in my dmesg, though my problem is a > little different from yours and my bisect lead to another commit. > And that also is still not fixed (last tested with 4.0). (Please note that I didn't do a bisect - that was Thomas. I only noted that I can confirm his observations and that his patch helps to prevent or hide the issue.) Perhaps these are two completely unrelated issues? Jan -- 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/