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 4C6B7C43458 for ; Thu, 2 Jul 2026 21:02:25 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 8C3D910E50A; Thu, 2 Jul 2026 21:02:24 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.b="RxT5fF5O"; 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 D039410E50A for ; Thu, 2 Jul 2026 21:02:22 +0000 (UTC) Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 49FBC43726 for ; Thu, 2 Jul 2026 21:02:22 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPS id 2352EC19425 for ; Thu, 2 Jul 2026 21:02:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1783026142; bh=ZnHC+evi7eWWC8wZsnIpF1pPaOv0E92RsZf0FNHKT8k=; h=From:To:Subject:Date:From; b=RxT5fF5OzBFhRvMtMJAfxMOnb9tEirdsWVwBrrda/rplDdP0ETX+PwXPAzSTp8VoK M0PfpuhWWhwSktm4fMOUT0j4tS8762ehD8hWy/0HlSUoF4n47MVHISUFbuXseZRp8Q 3Y7VWpyRwCWQjlZX4oWeFJy72lQilxfjOTuxcD1wpZNb3p2qhD0VoCiIIbe/bUb39Y Sun4d+tJxvSf5zTmqf7iwTgDzazJttfFWjP9TjKcJPThBBRmGHQ8bVvdJEu3eFw8qs EoEi7XG66km6orYma+SRtyV410I1qVV3qKeYAGXnN5MZj3S/0WHrrq5Jii1IXTuwe+ rdERsf7hKy1aQ== Received: by aws-us-west-2-korg-bugzilla-1.web.codeaurora.org (Postfix, from userid 48) id 03F63C41613; Thu, 2 Jul 2026 21:02:22 +0000 (UTC) From: bugzilla-daemon@kernel.org To: dri-devel@lists.freedesktop.org Subject: [Bug 221714] New: AMDGPU: Firmware issue on Teros TE-2476G monitor causes black screen/instability with FreeSync and invalid EDID. Date: Thu, 02 Jul 2026 21:02:21 +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: normal X-Bugzilla-Who: MANCHOIG@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=3D221714 Bug ID: 221714 Summary: AMDGPU: Firmware issue on Teros TE-2476G monitor causes black screen/instability with FreeSync and invalid EDID. Product: Drivers Version: 2.5 Hardware: All OS: Linux Status: NEW Severity: normal Priority: P3 Component: Video(DRI - non Intel) Assignee: drivers_video-dri@kernel-bugs.osdl.org Reporter: MANCHOIG@gmail.com Regression: No Description: The Teros TE-2476G monitor (23.8" 144Hz) fails to properly initialize on the amdgpu driver. The monitor firmware appears to report a null serial number (00000000) and fails to negotiate high refresh rates (144Hz) when FreeSync = is active. This results in intermittent black screens or a fallback to 60Hz. System Info: GPU: AMD Radeon RX 580 Driver: amdgpu Kernel: 7.1.2-3-cachyos Distribution: Arch Linux / CachyOS Steps to reproduce: Connect Teros TE-2476G via DisplayPort. Enable default FreeSync/VRR settings. System fails to consistently maintain 144Hz link or causes display sign= al loss. Workaround: The issue is mitigated by disabling FreeSync via kernel parameter (amdgpu.freesync_video=3D0) and forcing the monitor mode using video=3DDP-1:1920x1080@144 in the bootloader command line. Expected behavior: The amdgpu driver should handle the monitor's invalid EDID gracefully or provide a "quirk" to ignore the missing serial number and allow stable 144Hz operation without requiring manual cmdline overrides. --=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.=