From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Gummerer Subject: Re: [BUG/REGRESSION] Screen flickering Date: Wed, 13 May 2015 13:27:06 +0200 Message-ID: <87zj5890qd.fsf@hank.tgummerer.com> 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="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <20150513103224.GA8470@sudip-PC> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" To: Sudip Mukherjee , Jan Niehusmann Cc: David Airlie , intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, Daniel Vetter List-Id: dri-devel@lists.freedesktop.org U3VkaXAgTXVraGVyamVlIDxzdWRpcG0ubXVraGVyamVlQGdtYWlsLmNvbT4gd3JpdGVzOgoKPiBP biBXZWQsIE1heSAxMywgMjAxNSBhdCAxMTo1MzoxOUFNICswMjAwLCBKYW4gTmllaHVzbWFubiB3 cm90ZToKPj4gQXByIDMwIDA4OjUwOjIzIGxvY2FsaG9zdCBrZXJuZWw6IFtkcm06aW50ZWxfY3B1 X2ZpZm9fdW5kZXJydW5faXJxX2hhbmRsZXIgW2k5MTVdXSAqRVJST1IqIENQVSBwaXBlIEIgRklG TyB1bmRlcnJ1bgo+PiBBcHIgMzAgMDg6NTA6MjMgbG9jYWxob3N0IGtlcm5lbDogW2RybTppbnRl bF9wY2hfZmlmb191bmRlcnJ1bl9pcnFfaGFuZGxlciBbaTkxNV1dICpFUlJPUiogUENIIHRyYW5z Y29kZXIgQiBGSUZPIHVuZGVycnVuCj4+IEFwciAzMCAwODo1MDoyOSBsb2NhbGhvc3Qga2VybmVs OiBbZHJtOmludGVsX2NwdV9maWZvX3VuZGVycnVuX2lycV9oYW5kbGVyIFtpOTE1XV0gKkVSUk9S KiBDUFUgcGlwZSBBIEZJRk8gdW5kZXJydW4KPj4gQXByIDMwIDA4OjUwOjI5IGxvY2FsaG9zdCBr ZXJuZWw6IFtkcm06aW50ZWxfcGNoX2ZpZm9fdW5kZXJydW5faXJxX2hhbmRsZXIgW2k5MTVdXSAq RVJST1IqIFBDSCB0cmFuc2NvZGVyIEEgRklGTyB1bmRlcnJ1bgo+IGhpLAo+IEkgYWxzbyBoYXZl IHRoZSBzaW1pbGFyIGVudHJpZXMgaW4gbXkgZG1lc2csIHRob3VnaCBteSBwcm9ibGVtIGlzIGEK PiBsaXR0bGUgZGlmZmVyZW50IGZyb20geW91cnMgYW5kIG15IGJpc2VjdCBsZWFkIHRvIGFub3Ro ZXIgY29tbWl0Lgo+IEFuZCB0aGF0IGFsc28gaXMgc3RpbGwgbm90IGZpeGVkIChsYXN0IHRlc3Rl ZCB3aXRoIDQuMCkuCj4KPiBodHRwOi8vcGF0Y2h3b3JrLmZyZWVkZXNrdG9wLm9yZy9wYXRjaC80 NjA3MS8KClRoYW5rIHlvdSBmb3IgdGhlIHBvaW50ZXIsIGJ1dCB0aGlzIHNlZW1zIHRvIGJlIGFu IHVucmVsYXRlZCBpc3N1ZS4gIEkKdHJpZWQgYXBwbHlpbmcgdGhlIHBhdGNoLCBidXQgaXQgZG9l c24ndCBmaXggdGhlIGlzc3VlcyB0aGF0IEknbQpleHBlcmllbmNpbmcuCgo+IHJlZ2FyZHMKPiBz dWRpcApfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpJbnRl bC1nZnggbWFpbGluZyBsaXN0CkludGVsLWdmeEBsaXN0cy5mcmVlZGVza3RvcC5vcmcKaHR0cDov L2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2ludGVsLWdmeAo= From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754544AbbEML1R (ORCPT ); Wed, 13 May 2015 07:27:17 -0400 Received: from mail-wg0-f47.google.com ([74.125.82.47]:34377 "EHLO mail-wg0-f47.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754358AbbEML1N (ORCPT ); Wed, 13 May 2015 07:27:13 -0400 From: Thomas Gummerer To: Sudip Mukherjee , Jan Niehusmann Cc: Jani Nikula , 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 In-Reply-To: <20150513103224.GA8470@sudip-PC> References: <87pp65efmo.fsf@hank.tgummerer.com> <87iobw3klc.fsf@intel.com> <20150513095319.GA4249@jannic.reliablesolutions.de> <20150513103224.GA8470@sudip-PC> User-Agent: Notmuch/0.19~rc1+3~g0d8251d (http://notmuchmail.org) Emacs/24.5.1 (x86_64-unknown-linux-gnu) Date: Wed, 13 May 2015 13:27:06 +0200 Message-ID: <87zj5890qd.fsf@hank.tgummerer.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Sudip Mukherjee writes: > On Wed, May 13, 2015 at 11:53:19AM +0200, Jan Niehusmann wrote: >> 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). > > http://patchwork.freedesktop.org/patch/46071/ Thank you for the pointer, but this seems to be an unrelated issue. I tried applying the patch, but it doesn't fix the issues that I'm experiencing. > regards > sudip