Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753290Ab2JFIAM (ORCPT ); Sat, 6 Oct 2012 04:00:12 -0400 Received: from 1wt.eu ([62.212.114.60]:35980 "EHLO 1wt.eu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752704Ab2JFIAI (ORCPT ); Sat, 6 Oct 2012 04:00:08 -0400 Date: Sat, 6 Oct 2012 09:59:56 +0200 From: Willy Tarreau To: Dave Airlie Cc: Chris Wilson , Daniel Vetter , linux-kernel@vger.kernel.org Subject: Re: 3.5 regression on i915 Message-ID: <20121006075956.GF21163@1wt.eu> References: <20121005234218.GC21163@1wt.eu> <20121005235845.GE21163@1wt.eu> <20121006072704.GA22465@1wt.eu> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.4.2.3i Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1773 Lines: 43 On Sat, Oct 06, 2012 at 03:43:56AM -0400, Dave Airlie wrote: > On Sat, Oct 6, 2012 at 3:27 AM, Willy Tarreau wrote: > > On Sat, Oct 06, 2012 at 01:58:45AM +0200, Willy Tarreau wrote: > >> On Sat, Oct 06, 2012 at 09:48:57AM +1000, Dave Airlie wrote: > >> > Any reason you don't have KMS, you'll keep hitting these non-kms bugs > >> > since it has no users anymore really. > >> > > >> > Granted they'll get fixed, but I suspect its a losing battle over time. > >> > >> Well, back in old times every time I tried to enable it, I only ran into > >> problems so I got used to disable it, which made sense since it didn't > >> bring me any benefit. > > > > OK I found why in the end. When I enable KMS, my X server fails to start > > and segfaults in intel_drv.so. So I think that the comment in Kconfig > > below is quite appropriate : > > Okay are you running a really old userspace? just wondering what could > cause this. yes, my Xorg is 1.4.2 and xf86-video-intel is 2.7.1. I have additional information, I retested with 3.4.12 with and without KMS : 3.4.12, no KMS : X works fine 3.4.12, KMS : X works fine but some garbage follows the mouse pointer on the external display 3.5.x no KMS : kernel BUG 3.5.x KMS : X server segfaults in intel driver So in fact, both the KMS/non-KMS confs have regressed in 3.5 on this setup. It is possible that the commit which removed the list of pinned inactive objects (1b50247a) has uncovered another long-time bug. Regards, Willy -- 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/