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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id DF496C433FE for ; Mon, 3 Oct 2022 18:28:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229785AbiJCS26 (ORCPT ); Mon, 3 Oct 2022 14:28:58 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59194 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229922AbiJCS25 (ORCPT ); Mon, 3 Oct 2022 14:28:57 -0400 Received: from wp530.webpack.hosteurope.de (wp530.webpack.hosteurope.de [IPv6:2a01:488:42:1000:50ed:8234::]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5516E33406 for ; Mon, 3 Oct 2022 11:28:54 -0700 (PDT) Received: from [2a02:8108:963f:de38:eca4:7d19:f9a2:22c5]; authenticated by wp530.webpack.hosteurope.de running ExIM with esmtpsa (TLS1.3:ECDHE_RSA_AES_128_GCM_SHA256:128) id 1ofQBO-0001wA-OH; Mon, 03 Oct 2022 20:28:50 +0200 Message-ID: <714903fa-16c8-4247-d69d-74af6ef50bfa@leemhuis.info> Date: Mon, 3 Oct 2022 20:28:50 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.3.1 Subject: Re: Regression on 5.19.12, display flickering on Framework laptop Content-Language: en-US, de-DE To: =?UTF-8?B?VmlsbGUgU3lyasOkbMOk?= Cc: stable@vger.kernel.org, regressions@lists.linux.dev, Greg Kroah-Hartman , Slade Watkins , Jerry Ling , intel-gfx@lists.freedesktop.org, David Matthew Mattli References: <55905860-adf9-312c-69cc-491ac8ce1a8b@cern.ch> <03147889-B21C-449B-B110-7E504C8B0EF4@sladewatkins.net> From: Thorsten Leemhuis In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-bounce-key: webpack.hosteurope.de;regressions@leemhuis.info;1664821734;e096c3cc; X-HE-SMSGID: 1ofQBO-0001wA-OH Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org On 03.10.22 19:48, Ville Syrjälä wrote: > On Mon, Oct 03, 2022 at 08:45:18PM +0300, Ville Syrjälä wrote: >> On Sat, Oct 01, 2022 at 12:07:39PM +0200, Thorsten Leemhuis wrote: >>> On 30.09.22 14:26, Jerry Ling wrote: >>>> >>>> looks like someone has done it: >>>> https://bbs.archlinux.org/viewtopic.php?pid=2059823#p2059823 >>>> >>>> and the bisect points to: >>>> >>>> |# first bad commit: [fc6aff984b1c63d6b9e54f5eff9cc5ac5840bc8c] >>>> drm/i915/bios: Split VBT data into per-panel vs. global parts Best, Jerry | >>> >>> FWIW, that's 3cf050762534 in mainline. Adding Ville, its author to the >>> list of recipients. >> >> I definitely had no plans to backport any of that stuff, >> but I guess the automagics did it anyway. >> >> Looks like stable is at least missing this pile of stuff: >> 50759c13735d drm/i915/pps: Keep VDD enabled during eDP probe >> 67090801489d drm/i915/pps: Reinit PPS delays after VBT has been fully parsed >> 8e75e8f573e1 drm/i915/pps: Split PPS init+sanitize in two >> 586294c3c186 drm/i915/pps: Stash away original BIOS programmed PPS delays >> 89fcdf430599 drm/i915/pps: Don't apply quirks/etc. to the VBT PPS delays if they haven't been initialized >> 60b02a09598f drm/i915/pps: Introduce pps_delays_valid() >> >> But dunno if even that is enough. If you need testers: David (now CCed) apparently has a affected machine and offered to test patches in a different subthread of this thread. >> This bug report is probably the same thing: >> https://gitlab.freedesktop.org/drm/intel/-/issues/7013 Sounds like it. > Also cc intel-gfx... Ahh, sorry, should have done that when I CCed you. Ciao, Thorsten >>> Did anyone check if a revert on top of 5.19.12 works easily and solves >>> the problem? >>> >>> And does anybody known if mainline affected, too? >>> >>> Ciao, Thorsten >>> >>> >>>> On 9/30/22 07:11, Slade Watkins wrote: >>>>> Hey Greg, >>>>> >>>>>> On Sep 30, 2022, at 1:59 AM, Greg KH wrote: >>>>>> >>>>>> On Fri, Sep 30, 2022 at 06:37:48AM +0200, Greg KH wrote: >>>>>>> On Thu, Sep 29, 2022 at 10:26:25PM -0400, Jerry Ling wrote: >>>>>>>> Hi, >>>>>>>> >>>>>>>> It has been reported by multiple users across a handful of distros >>>>>>>> that >>>>>>>> there seems to be regression on Framework laptop (which presumably >>>>>>>> is not >>>>>>>> that special in terms of mobo and display) >>>>>>>> >>>>>>>> Ref: >>>>>>>> https://community.frame.work/t/psa-dont-upgrade-to-linux-kernel-5-19-12-arch1-1-on-arch-linux-gen-11-model/23171 >>>>>>> Can anyone do a 'git bisect' to find the offending commit? >>>>>> Also, this works for me on a gen 12 framework laptop: >>>>>>     $ uname -a >>>>>>     Linux frame 5.19.12 #68 SMP PREEMPT_DYNAMIC Fri Sep 30 07:02:33 >>>>>> CEST 2022 x86_64 GNU/Linux >>>>>> >>>>>> so there's something odd with the older hardware? >>>>>> >>>>>> greg k-h >>>>> Could be. Running git bisect for 5.19.11 and 5.19.12 (as suggested by >>>>> the linked forum thread) returned nothing on gen 11 for me. >>>>> >>>>> This is very odd, >>>>> -srw >>>> >>>> >> >> -- >> Ville Syrjälä >> Intel >