From mboxrd@z Thu Jan 1 00:00:00 1970 From: Theodore Ts'o Subject: Re: [REGRESSION] i915: failure to interoperate with HP ZR30w using an X230 Date: Sat, 3 Nov 2012 14:07:59 -0400 Message-ID: <20121103180759.GA5486@thunk.org> References: <87hapcqu97.fsf@intel.com> <87zk34gok8.fsf@intel.com> <20121030203221.GA4537@thunk.org> <20121103005831.GA3978@thunk.org> <20121103102158.GP5755@phenom.ffwll.local> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from imap.thunk.org (li9-11.members.linode.com [67.18.176.11]) by gabe.freedesktop.org (Postfix) with ESMTP id 7B4DB9E79A for ; Sat, 3 Nov 2012 11:08:04 -0700 (PDT) Content-Disposition: inline In-Reply-To: <20121103102158.GP5755@phenom.ffwll.local> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dri-devel-bounces+sf-dri-devel=m.gmane.org@lists.freedesktop.org Errors-To: dri-devel-bounces+sf-dri-devel=m.gmane.org@lists.freedesktop.org To: Jani Nikula , dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org List-Id: dri-devel@lists.freedesktop.org On Sat, Nov 03, 2012 at 11:21:58AM +0100, Daniel Vetter wrote: > > Well, we know for sure that fdi link training is broken - it doesn't match > at all what the spec says we should do. I've been working on this lately, > since in quite a few circumstances the link train fails without the > relevent bits indicating so. While testing I've also noticed that this > entire thing is highly timing dependent, e.g. denpending upon which > desktop is running and which tool I use to change the configuration it > fails or succeeds. So it is still (somewhat) broken in 3.7-rcX? Certainly it seems to be better (at least for me) than what was in 3.6.3. Or are you saying I may have just gotten lucky? :-) > So I have no suggestions for what could help your system and what should > get backported, since the current code is still broken. Thanks for your response and for your work in making the i915 driver better. I really appreciate your efforts. Cheers, - Ted