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 4236CC3ABD8 for ; Fri, 16 May 2025 15:02:59 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id DDDC510EAFC; Fri, 16 May 2025 15:02:58 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; secure) header.d=mailbox.org header.i=@mailbox.org header.b="gE8AicAt"; dkim-atps=neutral Received: from mout-p-103.mailbox.org (mout-p-103.mailbox.org [80.241.56.161]) by gabe.freedesktop.org (Postfix) with ESMTPS id 7F03310EAFC; Fri, 16 May 2025 15:02:53 +0000 (UTC) Received: from smtp1.mailbox.org (smtp1.mailbox.org [10.196.197.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mout-p-103.mailbox.org (Postfix) with ESMTPS id 4ZzVgY6tY2z9sp5; Fri, 16 May 2025 17:02:49 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mailbox.org; s=mail20150812; t=1747407770; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=RIDO3oVnldJayGm/2eNWvs3elXTQtF0sU6jz8f532EQ=; b=gE8AicAtcnnkNx/Jz95Ho681LZDefdIFhDi+JZTYdFlGgn5dsS7Hj7lG9bN3EQoTdPdJpe /IwxUn0125vR3/p4AhHpxeBbpMCvNhO2IUnC7TwGHrXeSo+QpED974G3I0RJPFsfNgJA/5 0ZTWsGy/3tX5GrP3fQIGBj22Pq2CLkEd3Kq1YBrMmQ88cNm/w5iJ70ApyOyREAdS3IZSEK wVzd8dlEn1oo3SxvdLOTwF3WDhKhCOrtC4zVYE3laehSAX82XeAHkP6ftKkmvrc3+kwQBv fCjlLSVvSRmR8GPYe7cwy3HTMSZGUi3XstqUGI1q+SmjALSFpsZi3PiEwiDZtg== Message-ID: Date: Fri, 16 May 2025 17:02:47 +0200 MIME-Version: 1.0 Subject: Re: Kernels >= 6.3 disable video output To: Harry Wentland , Alex Deucher , Steven J Abner Cc: amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org References: <6DWYVS.BXJ4YUZ0KN5B3.ref@att.net> <6DWYVS.BXJ4YUZ0KN5B3@att.net> <1Q10WS.BHBZBX486I3M2@att.net> From: =?UTF-8?Q?Michel_D=C3=A4nzer?= Content-Language: en-CA In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-MBO-RS-ID: e2c69a454b74a523c61 X-MBO-RS-META: 1y8pf99hm13nhgxj733fsu3dm9ouxhdd X-BeenThere: amd-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Discussion list for AMD gfx List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: amd-gfx-bounces@lists.freedesktop.org Sender: "amd-gfx" On 2025-05-15 19:59, Harry Wentland wrote: > Hi Steven, > > thanks for the bisect. > > In order to avoid display artifacts (especially for HDR) we had to > allow higher bit depth color output on the wire. The driver should > fallback to a lower resolution as needed but looks like there's a > bug with this particular TV. Are you able to share the specific > TV model? We haven't seen this bug in internal testing but if we > know which device shows the issue we might be able to find one > for testing. > > It would probably be good if we had a module parameter to force > limit the output bpc in order to unblock users (like you) that see > issues. FWIW, with GNOME the "max bpc" property value can be set per monitor in the ~/.config/monitors.xml file. Other DEs might have something similar (with Xorg, it should even be possible to set it with xrandr). -- Earthling Michel Dänzer \ GNOME / Xwayland / Mesa developer https://redhat.com \ Libre software enthusiast