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 7E99AC433F5 for ; Sun, 14 Nov 2021 21:18:59 +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 125BE60F93 for ; Sun, 14 Nov 2021 21:18:59 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 125BE60F93 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=stacken.kth.se 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 62C7089F77; Sun, 14 Nov 2021 21:18:58 +0000 (UTC) X-Greylist: delayed 615 seconds by postgrey-1.36 at gabe; Sun, 14 Nov 2021 21:18:57 UTC Received: from srs-1.relay.sys.kth.se (srs-1.sys.kth.se [130.237.48.92]) by gabe.freedesktop.org (Postfix) with ESMTPS id 278CE89F77 for ; Sun, 14 Nov 2021 21:18:57 +0000 (UTC) Received: from mx7.kth.se (mx7.kth.se [130.237.48.48]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by srs-1.relay.sys.kth.se (Postfix) with ESMTPS id 4HslL016Bgz1DY2Y for ; Sun, 14 Nov 2021 22:08:40 +0100 (CET) Received: from mx7.kth.se (localhost [127.0.0.1]) by mx7.kth.se (Postfix) with ESMTP id 1CD2D140134 for ; Sun, 14 Nov 2021 22:08:40 +0100 (CET) X-Virus-Scanned: by amavisd-new at kth.se Received: from mx7.kth.se ([127.0.0.1]) by mx7.kth.se (mx7.kth.se [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id iN8kLxLV2uzk for ; Sun, 14 Nov 2021 22:08:38 +0100 (CET) Received: from mail-2.stacken.kth.se (mail-2.stacken.kth.se [130.237.234.107]) by mx7.kth.se (Postfix) with ESMTP for ; Sun, 14 Nov 2021 22:08:38 +0100 (CET) Received: from betty.fdsoft.se (d83-183-14-20.cust.tele2.se [83.183.14.20]) by mail-2.stacken.kth.se (Postfix) with ESMTPSA id 8557880130 for ; Sun, 14 Nov 2021 22:08:38 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=stacken.kth.se; s=mail; t=1636924118; bh=eGkrd57FEkoZmmVRDeooqAg+wCri55+qWObzQ4mLL8I=; h=From:To:Subject:Date:From; b=z6yg06Kx2cUMDCyJCoOqKSfRfGP08bLIrllmhfx2100l/a3PQJUrqnAAtHOP0pVQC Lzq6lHX+8VK2ZJ8/0HPnoA4mJgwUHlsjOjIWaDv9NynzSaQF5k3IqBuo1aR4cYMoUy nd1mQEQouzyuYxMSr/2nYB79y39799DU6vMr7iJM7evRAqz97M5CjlDfbE8QD6Edwo z9fgOjoFl3CZM6WEm7Qm81lWZpCtpxmB3teSGtqcRAFMXyRPHmSvNKIOYocpyXfmLJ GN5+cKzkXOhuSHHGQ9eRNnSc7NY+iBgOT4kEG2IilTWnJyYv54LypR8jNnRJWlIHld AlRThZkE56XaQ== Received: from ester.fdsoft.se ([192.168.1.2] helo=ester) by betty.fdsoft.se with esmtp (Exim 4.94.2) (envelope-from ) id 1mmMjt-0004ob-BD for intel-gfx@lists.freedesktop.org; Sun, 14 Nov 2021 22:08:37 +0100 From: Frej Drejhammar To: intel-gfx@lists.freedesktop.org User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.2 (gnu/linux) Date: Sun, 14 Nov 2021 22:08:37 +0100 Message-ID: MIME-Version: 1.0 Content-Type: text/plain Subject: [Intel-gfx] Commit a22c074fd1dd52a8b41dd6789220409b64093e9c broke Intel Corporation HD Graphics (rev 08) 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" [Now sent from a subscribed address] Hi, Upgrading an Acer Chromebook C740 from a stable 5.14.18 to a 5.15.2 kernel leads to a hang/crash very early during startup. With 5.15.2, the kernel fails before any video output and bootup continues to the recovery kernel. Bisecting points to commit a22c074fd1dd52a8b41dd6789220409b64093e9c "Merge tag 'drm-intel-next-2021-08-10-1' of git://anongit.freedesktop.org/drm/drm-intel into drm-next" as the culprit, but here the symptoms are slightly different, as bootup just hangs and no fallback to the recovery kernel happens. Lspci says that the graphics chipset is a: 00:02.0 VGA compatible controller: Intel Corporation HD Graphics (rev 08) # dmesg | grep -e "\(drm\)\|\(i915\)" [ 0.335241] [drm] Initialized i915 1.6.0 20201103 for 0000:00:02.0 on minor 0 [ 0.335604] [drm] Initialized vgem 1.0.0 20120112 for vgem on minor 1 [ 0.341795] fbcon: i915 (fb0) is primary device [ 1.650456] i915 0000:00:02.0: [drm] fb0: i915 frame buffer device Both parents of a22c074fd1dd52a8b41dd6789220409b64093e9c: cb22f12f302584a974a68034350bd48798843ffc and 3bfa7d40ce736ffbbfe07127061f54b359ee2b12 boots and provides video output without any problems. I would be grateful for suggestions on how to debug this further. Regards, --Frej Drejhammar