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Tue, 28 Oct 2025 22:11:47 -0500 Received: from ray-Ubuntu.amd.com (10.180.168.240) by satlexmb07.amd.com (10.181.42.216) with Microsoft SMTP Server id 15.2.2562.17 via Frontend Transport; Tue, 28 Oct 2025 20:11:39 -0700 From: Ray Wu To: CC: Harry Wentland , Leo Li , Aurabindo Pillai , Roman Li , Wayne Lin , Tom Chung , "Fangzhi Zuo" , Dan Wheeler , Ray Wu , Ivan Lipski , Alex Hung , =?UTF-8?q?Timur=20Krist=C3=B3f?= , Ray Wu Subject: [PATCH 11/13] drm/amd/display: Fix black screen with HDMI outputs Date: Wed, 29 Oct 2025 11:02:59 +0800 Message-ID: <20251029030935.2785560-12-ray.wu@amd.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20251029030935.2785560-1-ray.wu@amd.com> References: <20251029030935.2785560-1-ray.wu@amd.com> MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8bit Received-SPF: None (SATLEXMB05.amd.com: ray.wu@amd.com does not designate permitted sender hosts) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DS3PEPF000099D3:EE_|DS0PR12MB9727:EE_ X-MS-Office365-Filtering-Correlation-Id: 46e6312d-ebb4-45ab-7987-08de1698e65b X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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CTRY:US; LANG:en; SCL:1; SRV:; IPV:CAL; SFV:NSPM; H:satlexmb08.amd.com; PTR:InfoDomainNonexistent; CAT:NONE; SFS:(13230040)(376014)(1800799024)(36860700013)(82310400026); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 29 Oct 2025 03:11:48.8009 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 46e6312d-ebb4-45ab-7987-08de1698e65b X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d; Ip=[165.204.84.17]; Helo=[satlexmb08.amd.com] X-MS-Exchange-CrossTenant-AuthSource: DS3PEPF000099D3.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS0PR12MB9727 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" From: Alex Hung [Why & How] This fixes the black screen issue on certain APUs with HDMI, accompanied by the following messages: amdgpu 0000:c4:00.0: amdgpu: [drm] Failed to setup vendor info frame on connector DP-1: -22 amdgpu 0000:c4:00.0: [drm] Cannot find any crtc or sizes [drm] Cannot find any crtc or sizes Fixes: 99ff9bc57b02 ("drm/amd/display: Fix DVI-D/HDMI adapters") Suggested-by: Timur Kristóf Reviewed-by: Harry Wentland Signed-off-by: Alex Hung Signed-off-by: Ray Wu --- drivers/gpu/drm/amd/display/dc/link/link_detection.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/gpu/drm/amd/display/dc/link/link_detection.c b/drivers/gpu/drm/amd/display/dc/link/link_detection.c index c417780f37bc..e8566a5218fc 100644 --- a/drivers/gpu/drm/amd/display/dc/link/link_detection.c +++ b/drivers/gpu/drm/amd/display/dc/link/link_detection.c @@ -1252,11 +1252,16 @@ static bool detect_link_and_local_sink(struct dc_link *link, sink->edid_caps.analog) sink->sink_signal = SIGNAL_TYPE_RGB; + if (sink->sink_signal != link->connector_signal) + DC_LOG_WARNING("sink_signal (%d) does not match connector_signal (%d)\n", + sink->sink_signal, link->connector_signal); + /* HDMI-DVI Dongle */ if (sink->sink_signal == SIGNAL_TYPE_HDMI_TYPE_A && !sink->edid_caps.edid_hdmi) sink->sink_signal = SIGNAL_TYPE_DVI_SINGLE_LINK; else if (dc_is_dvi_signal(sink->sink_signal) && + dc_is_dvi_signal(link->connector_signal) && aud_support->hdmi_audio_native && sink->edid_caps.edid_hdmi) sink->sink_signal = SIGNAL_TYPE_HDMI_TYPE_A; -- 2.43.0