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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C9D64C433F5 for ; Sun, 14 Nov 2021 08:28:49 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 8D31661027 for ; Sun, 14 Nov 2021 08:28:49 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 8D31661027 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=bugzilla.kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id ABEA86E4BA; Sun, 14 Nov 2021 08:28:48 +0000 (UTC) Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by gabe.freedesktop.org (Postfix) with ESMTPS id E1C516E4BA for ; Sun, 14 Nov 2021 08:28:47 +0000 (UTC) Received: by mail.kernel.org (Postfix) with ESMTPS id AB21160F36 for ; Sun, 14 Nov 2021 08:28:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1636878527; bh=2twhK7FQEbGzazw20Nlq//IrEo9HJtgvd1xkds3j7N0=; h=From:To:Subject:Date:In-Reply-To:References:From; b=C5GfZdtjl1KKqhT+zO90qGEpptG1eHz5/EuAZSIJ3RE9YPdq9LOLe5wc4w0PJ+beM 3JOGhed/CFBjt3mOoX4pvN77/aKg5FVZ2kXuyVL0nqMKS6tcZClBrd8Rj+8SqE5qFo WerpGEMAlReigqk9COtpJp34VXNTxeyzqDJXAh/xiWtKGzHu5vvEn5Z+RAlMHTMuj+ huHyMOJEXa0IWARPHnOhLQDyTaBPn5m9XyLk+3dazjen/fONDB5yGn08KXCcfR3WWT tmmi5mhaaBqdDDKUo3LuHyMLv1FwxXSP34oDO/dT9zgVFp7J5YOhLf/6Bx1Q/e1AH0 DEfbFP1R99OvQ== From: bugzilla-daemon@bugzilla.kernel.org To: dri-devel@lists.freedesktop.org Subject: [Bug 215003] apple_gmux fails to initialize and iGPU unclaimed on MacBook Pro 16" 2019 Date: Sun, 14 Nov 2021 08:28:47 +0000 X-Bugzilla-Reason: None X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: AssignedTo drivers_video-dri@kernel-bugs.osdl.org X-Bugzilla-Product: Drivers X-Bugzilla-Component: Video(DRI - non Intel) X-Bugzilla-Version: 2.5 X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: lukas@wunner.de X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P1 X-Bugzilla-Assigned-To: drivers_video-dri@kernel-bugs.osdl.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugzilla.kernel.org/ Auto-Submitted: auto-generated MIME-Version: 1.0 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: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" https://bugzilla.kernel.org/show_bug.cgi?id=3D215003 --- Comment #7 from Lukas Wunner (lukas@wunner.de) --- The gpu-switch utility I've linked to above has macOS and Windows versions.= You could try using it from one of those OSes to switch to the iGPU on next boo= t, then boot into Linux. Perhaps you could add a few debug printk's to find out which runtime servic= es call causes the crash. In summary, there are two issues here: The EFI issue which prevents you from switching to the iGPU on Linux, and the GMUX incompatibility. You may want= to open a separate bug for the former and assign it to the "EFI" Product so th= at Ard Biesheuvel and others can take a look. --=20 You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.=