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 832DDCD4F3C for ; Mon, 18 May 2026 09:29:28 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id CC8FC10E746; Mon, 18 May 2026 09:29:27 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.b="iw3rZo4E"; dkim-atps=neutral Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) by gabe.freedesktop.org (Postfix) with ESMTPS id 0A33410E746 for ; Mon, 18 May 2026 09:29:27 +0000 (UTC) Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id CDD064454F for ; Mon, 18 May 2026 09:29:26 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPS id B3846C2BCF6 for ; Mon, 18 May 2026 09:29:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1779096566; bh=0fX79frWM6xyFCaAu4yOxCdFDjamBWouzWz+MBWrE0E=; h=From:To:Subject:Date:From; b=iw3rZo4EcSoR87O2K4hGl96eTZ0ftYs/WVRlkaakj/Q1aVxEhaXuKnIiUkFyGI9TQ MMCiKwvMAF545LiulNaua+YfB7FpgLZTOiFsvzPAmH2ocu/S4iJFb1oXZlv5kDnylw sEMtVLcm3GCO965Z9IDXy+K+kjdNWMCFE7r+DrbqJd76Uw/p+3keKUJG/yucpVMyim W06Ua79KcIjMxB1CdOFerPsXXTdHRbAg2OnZ3rQYMSTCn98sbjyAAjRYR+m9gIMRH8 bsJDO1Is7r4XuzbiDNlRgWxp++klbe8phBE8JQBoB7prGOPLnSu6tWMZd7DtfN/7K0 c8+IZ64kB4MPA== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id 9FF15C41613; Mon, 18 May 2026 09:29:26 +0000 (UTC) From: bugzilla-daemon@kernel.org To: dri-devel@lists.freedesktop.org Subject: [Bug 221543] New: [nouveau] RTX 5080 (GB203): Xid:13 WIDTH CT Violation on kernels 6.16.7+ causing system hang Date: Mon, 18 May 2026 09:29:26 +0000 X-Bugzilla-Reason: None X-Bugzilla-Type: new 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: high X-Bugzilla-Who: wojciech.bielawski@gmail.com X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P3 X-Bugzilla-Assigned-To: drivers_video-dri@kernel-bugs.osdl.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter cf_regression Message-ID: 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=3D221543 Bug ID: 221543 Summary: [nouveau] RTX 5080 (GB203): Xid:13 WIDTH CT Violation on kernels 6.16.7+ causing system hang Product: Drivers Version: 2.5 Hardware: Other OS: Linux Status: NEW Severity: high Priority: P3 Component: Video(DRI - non Intel) Assignee: drivers_video-dri@kernel-bugs.osdl.org Reporter: wojciech.bielawski@gmail.com Regression: No Hardware: Lenovo ThinkStation P8 (30HJS53F00) CPU: AMD Threadripper PRO 7975WX (32C/64T) GPU: NVIDIA GeForce RTX 5080 (GB203, rev a1) [PCI 81:00.0] RAM: 128GB OS: Fedora 43 (Workstation) Affected kernels: 6.16.7 through 7.0.8 (latest tested) Working kernel: 6.13.6-200.fc41 Problem: On kernels 6.16.7 and later, the nouveau driver triggers repeated Xid:13 (WIDTH CT Violation) errors on all 7 GPCs of the RTX 5080. The errors are triggered by Chrome GPU acceleration but occur even with hardware acceleration disabled in Chrome. The error cascade is: 1. Chrome triggers Xid:13 on nouveau 2. Chrome GPU channel is killed 3. Xid:13 repeats every ~20 minutes 4. Xwayland encounters an MMU fault 5. System hangs completely (B0E1/S202 diagnostic codes on chassis) Reproducer: - Boot any kernel >=3D 6.16.7 with nouveau on RTX 5080 - Open Chrome (or Chromium) - Xid:13 errors appear within seconds in dmesg - System hangs within hours (sometimes minutes) What does NOT help: - Switching to X11 (hangs before reaching graphical mode) - Disabling Chrome hardware acceleration - Disabling C-States in BIOS - glxgears/GPU stress tests do NOT reproduce (only Chrome triggers it) Workaround: Downgrade to kernel 6.13.6-200.fc41. On that kernel, nouveau reports "unknown chipset" for RTX 5080 (expected, as GB203 support was added later), so the proprietary NVIDIA driver is required. This suggests a regression was introduced between 6.13.6 and 6.16.7 in nouveau's GB203/RTX 5080 support path. --=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.=