From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id D824FECAAD3 for ; Wed, 7 Sep 2022 05:55:36 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 60F1C10E318; Wed, 7 Sep 2022 05:55:30 +0000 (UTC) X-Greylist: delayed 305 seconds by postgrey-1.36 at gabe; Wed, 07 Sep 2022 04:21:49 UTC Received: from out20-37.mail.aliyun.com (out20-37.mail.aliyun.com [115.124.20.37]) by gabe.freedesktop.org (Postfix) with ESMTPS id 9E8A110E19E for ; Wed, 7 Sep 2022 04:21:49 +0000 (UTC) X-Alimail-AntiSpam: AC=CONTINUE; BC=0.04517506|-1; CH=green; DM=|CONTINUE|false|; DS=CONTINUE|ham_system_inform|0.0144003-0.000615202-0.984985; FP=0|0|0|0|0|-1|-1|-1; HT=ay29a033018047199; MF=wangyugui@e16-tech.com; NM=1; PH=DS; RN=2; RT=2; SR=0; TI=SMTPD_---.P9sOKGo_1662524168; Received: from 192.168.2.112(mailfrom:wangyugui@e16-tech.com fp:SMTPD_---.P9sOKGo_1662524168) by smtp.aliyun-inc.com; Wed, 07 Sep 2022 12:16:09 +0800 Date: Wed, 07 Sep 2022 12:16:13 +0800 From: Wang Yugui To: Thomas Zimmermann Subject: Re: mgag200 broken on kernel-6.0-rc3 on DELL/T620 In-Reply-To: <44b97fac-e879-e396-b8f2-f9459a5f913c@suse.de> References: <20220902135242.2447.409509F4@e16-tech.com> <44b97fac-e879-e396-b8f2-f9459a5f913c@suse.de> Message-Id: <20220907121612.FBFC.409509F4@e16-tech.com> MIME-Version: 1.0 Content-Type: text/plain; charset="GB2312" Content-Transfer-Encoding: 8bit X-Mailer: Becky! ver. 2.75.04 [en] X-Mailman-Approved-At: Wed, 07 Sep 2022 05:55:23 +0000 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: dri-devel Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Hi, > Am 02.09.22 um 07:52 schrieb Wang Yugui: > > Hi, > > > > mgag200 broken on kernel-6.0-rc3 on DELL/T620. > > > > See the attachementment file for the graph output. > > Thanks for reporting the bug. We recently refactored some code of the driver. Can you bisect to the change that introduced the problem? 5.19.3 works well on this DELL/T620. so this problem should be a regression of 6.0. other bisect seem difficult for me. Best Regards Wang Yugui (wangyugui@e16-tech.com) 2022/09/07 > > Best regards > Thomas > > > > > [root@T620 ~]# dmesg |grep -i 'vga\|mga' > > [ 0.588940] Console: colour VGA+ 80x25 > > [ 4.918214] pci 0000:0a:00.0: vgaarb: setting as boot VGA device > > [ 4.919028] pci 0000:0a:00.0: vgaarb: bridge control possible > > [ 4.919028] pci 0000:0a:00.0: vgaarb: VGA device added: decodes=io+mem,owns=io+mem,locks=none > > [ 4.941058] vgaarb: loaded > > [ 9.385485] mgag200 0000:0a:00.0: vgaarb: deactivate vga console > > [ 9.510688] [drm] Initialized mgag200 1.0.0 20110418 for 0000:0a:00.0 on minor 0 > > [ 9.523145] fbcon: mgag200drmfb (fb0) is primary device > > [ 9.641543] mgag200 0000:0a:00.0: [drm] fb0: mgag200drmfb frame buffer device > > > > > > more info: > > 1, This DELL/T620 works well with kernel 5.15.63, > > so this is not a hardware error. > > > > 2, DELL/T640 works well with kernel 6.0-rc and 5.15.63. > > both DELL/T620 and DELL/T640 use the driver 'mgag200'. > > > > [root@T640 ~]# dmesg |grep -i 'vga\|mga' > > [ 10.161500] pci 0000:03:00.0: vgaarb: setting as boot VGA device > > [ 10.162463] pci 0000:03:00.0: vgaarb: VGA device added: decodes=io+mem,owns=io+mem,locks=none > > [ 10.176527] pci 0000:03:00.0: vgaarb: bridge control possible > > [ 10.182465] vgaarb: loaded > > [ 11.832839] fb0: EFI VGA frame buffer device > > [ 21.303826] mgag200 0000:03:00.0: vgaarb: deactivate vga console > > [ 21.319498] [drm] Initialized mgag200 1.0.0 20110418 for 0000:03:00.0 on minor 0 > > [ 21.330223] fbcon: mgag200drmfb (fb0) is primary device > > [ 21.332140] mgag200 0000:03:00.0: [drm] drm_plane_enable_fb_damage_clips() not called > > [ 21.741629] mgag200 0000:03:00.0: [drm] fb0: mgag200drmfb frame buffer device > > > > Best Regards > > Wang Yugui (wangyugui@e16-tech.com) > > 2022/09/02 > > > -- Thomas Zimmermann > Graphics Driver Developer > SUSE Software Solutions Germany GmbH > Maxfeldstr. 5, 90409 Nščrnberg, Germany > (HRB 36809, AG Nščrnberg) > Gesch?ftsfščhrer: Ivo Totev