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 4FDF9C10F1A for ; Tue, 7 May 2024 07:51:59 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id AC02410F24A; Tue, 7 May 2024 07:51:58 +0000 (UTC) Received: from mail.sig21.net (mail.sig21.net [217.197.84.222]) by gabe.freedesktop.org (Postfix) with ESMTPS id ADD2810F24A for ; Tue, 7 May 2024 07:51:57 +0000 (UTC) Received: from localhorst ([127.0.0.1]) by mail.sig21.net with esmtpsa (TLS1.3:ECDHE_SECP256R1__RSA_PSS_RSAE_SHA256__AES_256_GCM:256) (Exim 4.94.2) (envelope-from ) id 1s4FXm-0001vL-Tg ; Tue, 07 May 2024 09:47:22 +0200 Received: from js by abc.local with local (Exim 4.97) (envelope-from ) id 1s4FXm-000000005JT-24FY; Tue, 07 May 2024 09:47:22 +0200 Date: Tue, 7 May 2024 09:47:22 +0200 From: Johannes Stezenbach To: Lukas Wunner Cc: Thomas Zimmermann , "Saarinen, Jani" , "intel-gfx@lists.freedesktop.org" Subject: Re: i915 IVB hangup after resume from s2mem since v6.6.x Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" On Mon, May 06, 2024 at 09:42:18PM +0200, Lukas Wunner wrote: > On Mon, May 06, 2024 at 08:43:43PM +0200, Johannes Stezenbach wrote: > > so, git bisect pointed to: > > > > commit 701d2054fa317188cd4039c84e72c73254013b23 > > Author: Thomas Zimmermann > > Date: Tue Jun 13 13:07:13 2023 +0200 > > > > fbdev: Make support for userspace interfaces configurable > > > > Add Kconfig option CONFIG_FB_DEVICE and make the virtual fbdev > > ... > > > > I think nothing on my system uses /dev/fb*, thus I had disabled > > CONFIG_FB_DEVICE. Everything worked, only suspend/resume broke. > > I can confirm v6.8.9 with CONFIG_FB_DEVICE=y works fine. > > A user-visible regression like this is always sufficient to ask for a > revert of the offending commit. It's the commit author's duty to find > a fix ASAP. If you could file a bug report that would be helpful but > you've already done more than could be asked from any user. I don't think it is a regression. A new config option was added with default=y and I chose to disable it. The results were unexpected since the Kconfig help text didn't say "can break suspend/resume with i915" ;-/ Johannes