From owner-freebsd-current@FreeBSD.ORG Wed Oct 8 17:05:34 2014 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id A7E0EDB9 for ; Wed, 8 Oct 2014 17:05:34 +0000 (UTC) Received: from kib.kiev.ua (kib.kiev.ua [IPv6:2001:470:d5e7:1::1]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 18D02C4A for ; Wed, 8 Oct 2014 17:05:33 +0000 (UTC) Received: from tom.home (kostik@localhost [127.0.0.1]) by kib.kiev.ua (8.14.9/8.14.9) with ESMTP id s98H5PEY080107 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Wed, 8 Oct 2014 20:05:25 +0300 (EEST) (envelope-from kostikbel@gmail.com) DKIM-Filter: OpenDKIM Filter v2.9.2 kib.kiev.ua s98H5PEY080107 Received: (from kostik@localhost) by tom.home (8.14.9/8.14.9/Submit) id s98H5PKs080102; Wed, 8 Oct 2014 20:05:25 +0300 (EEST) (envelope-from kostikbel@gmail.com) X-Authentication-Warning: tom.home: kostik set sender to kostikbel@gmail.com using -f Date: Wed, 8 Oct 2014 20:05:25 +0300 From: Konstantin Belousov To: Adam McDougall Subject: Re: Ver 2 of the patch [was: Re: i915 driver update testing] Message-ID: <20141008170525.GH2153@kib.kiev.ua> References: <20141003170258.GG26076@kib.kiev.ua> <54315D3A.3090902@egr.msu.edu> <20141005170007.GZ26076@kib.kiev.ua> <5433260C.5050901@egr.msu.edu> <20141007042043.GG26076@kib.kiev.ua> <5433E408.2010601@egr.msu.edu> <20141007164419.GB2153@kib.kiev.ua> <20141007180106.GD2153@kib.kiev.ua> <54344766.1040700@egr.msu.edu> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <54344766.1040700@egr.msu.edu> User-Agent: Mutt/1.5.23 (2014-03-12) X-Spam-Status: No, score=-2.0 required=5.0 tests=ALL_TRUSTED,BAYES_00, DKIM_ADSP_CUSTOM_MED,FREEMAIL_FROM,NML_ADSP_CUSTOM_MED autolearn=no autolearn_force=no version=3.4.0 X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on tom.home Cc: freebsd-current@freebsd.org X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 08 Oct 2014 17:05:34 -0000 On Tue, Oct 07, 2014 at 04:04:54PM -0400, Adam McDougall wrote: > On 10/07/2014 14:01, Konstantin Belousov wrote: > > On Tue, Oct 07, 2014 at 07:44:19PM +0300, Konstantin Belousov wrote: > >> >From the same frame, please do > >> p *(struct drm_i915_private *)(dev->private) p *(struct drm_i915_private *)(dev->dev_private) > > > > I probably figured out what is wrong, but it is still interesting to > > see this piece of data. > > > > For everybody who has the issue with blank screen or panic after > > the patch: > > 1. please try the updated patch, > > https://www.kib.kiev.ua/kib/drm/i915.2.patch > > 2. if you use "kldload i915kms" to test the patch and get the blank > > screen, verify do you get panic or just a black screen. It is > > expected for sc, not so for vt. For vt, if you do get blank screen > > and not a panic, do not load i915kms manually and run the X server. > > I am interested if running X server does show proper output. > > > > Backtrace seems the same, I repeated the prior commands: > http://www.egr.msu.edu/~mcdouga9/i915-patch2-1.txt There are more occurences of the bug I fixed once in patch version 2. Also, since pmap changes were committed in modified form, please try the updated patch at https://www.kib.kiev.ua/kib/drm/i915.3.patch .