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Mon, 30 Jun 2025 07:41:48 +0000 Date: Mon, 30 Jun 2025 10:41:40 +0300 From: Imre Deak To: Paul Menzel CC: Jarkko Nikula , Rodrigo Vivi , , , LKML , Subject: Re: [Regression] Panel flickering on Dell XPS 13 9360 with drm-fixes-2025-06-28 merged (Linux 6.16-rc4) Message-ID: Reply-To: References: Content-Type: text/plain; charset="us-ascii" Content-Disposition: inline In-Reply-To: X-ClientProxiedBy: DU6P191CA0001.EURP191.PROD.OUTLOOK.COM (2603:10a6:10:540::11) To SJ0PR11MB4845.namprd11.prod.outlook.com (2603:10b6:a03:2d1::10) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SJ0PR11MB4845:EE_|DM3PPF5217261E0:EE_ X-MS-Office365-Filtering-Correlation-Id: 28b707f0-d953-4710-f7dd-08ddb7a9908b X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|366016|376014|1800799024; X-Microsoft-Antispam-Message-Info: =?us-ascii?Q?4D/OSooieqZ0s11SCPELHk+HrnYT/hKaaZrp96l6euRTegalz9Z/M+mnGKQ2?= =?us-ascii?Q?AXzlqjm0rbD2bPi5zr++pC3sXx36OgI7VnUN+y8cXxEXFt41Xlh57SOxnDiO?= =?us-ascii?Q?YCauf33Ckp2jEHJlUbvjIVb3bcGvoFKzP7lBTT+ar2rtizPezV3DA2b1lb7z?= =?us-ascii?Q?pjJe4oYdKeQIsDJrOs+EbQtrUMFun4xWjNzWf6tP/vHTrwsF/mIkePdjn5AE?= =?us-ascii?Q?A25NscNU8VNvOWNl5JpbP/7fojVUB/LgYMGNq6a69Fd5tH+XH3XtRKQlXrNY?= =?us-ascii?Q?XR6AyoYB+haCXDtdxjrfF69PImve91gWxNCPsSlkZiX7eDIF9QYovZbXRC2L?= =?us-ascii?Q?cTZR3Vl8NBMdGcbiiEOnI/Z7Iqnwvf2GW4YMBpmq6qkXOX1k0xFlhxH253Z3?= =?us-ascii?Q?hJWz4URsBAxWGgzBU0/UvS/N13ZIcdF12y/JJJZBsGDgyy3bwjVRKTfcHUAF?= =?us-ascii?Q?M7oNONYLgcLEgjMYBkhNWKJFOVgnZdGVP+lduISWIatSd22MGSVcRSq74Jpw?= =?us-ascii?Q?oqn5nvXzEOi3PDEyxGnh5yK4cfCsA49QSmzKp0JHsiVr3mg9ifdXbosRXSbB?= =?us-ascii?Q?tVejcBYJap5Am4+jxLk9tFBwbFv8pPowIU364E373OTlEBc7F376AFQ3Wqm3?= =?us-ascii?Q?FqmGPMq0zFg7y4yxSr5K0/d/7KtjrRCx6zLR19njHLS1F++Yq1nU1AMhy33z?= =?us-ascii?Q?0N4jHWLKs031Mtq50Bekc1O5QOaV5Ss5lcYLHQQYj9GBUyRgheL4A22Hxh/X?= =?us-ascii?Q?0YA/RHDRXB6lEsWh9IEa3Lguth1P9lmMheHBqWuJyO3e4Dbm07TGVrTEpaCW?= =?us-ascii?Q?eAy/APmf72kUUgP2YtPOrymUnx9KTwp8gpE3Ga30qFq5UK6+C9ueYi9MJnHx?= =?us-ascii?Q?kbTPxI6RctU3LrV8BKPtP55z0eCCmxet0J9gAljZ4wm3LcZFTnM/gf/wOuNK?= =?us-ascii?Q?cRfS9wxL2LTZcqMR8FkAWx2UkkSREA2zxQ60T61VkEAIc/PYRGpQd7xcTAO+?= =?us-ascii?Q?lcEvte2Vz2D/o0MidhO6xnXNrC/UZiAEIzGudPfo4Qj3wsy+fhJnGIF+pu9O?= =?us-ascii?Q?8wClF2M2jKfTbRKqa8S7c/phuq2DE8JHJwwmwnbB1bnE1s+IAbMTPmy0GoOS?= =?us-ascii?Q?ouVLxJZofJZ4umdXBQ4ErXPHsbVEAgBmTl1dKkpq4VcV4kGu0q/m+FynRrXX?= =?us-ascii?Q?CM8afvd+/iTBtZw/bAVJUUzZHZ71ZeEs8RS0IE72te4yvMMx6+KGZP5Fd/LN?= =?us-ascii?Q?Iyfw9GoCN3SIkQAHkxbwdm54ZmUyk88nzfPqiN7YKcVinkRugmj1DkRZVcog?= =?us-ascii?Q?Mi+V3G+atGBkwNPpFDaUju0bYcG1jWYyr6Nq6u7ugg/ud59GdJHkERGD93vI?= =?us-ascii?Q?ejG7zio03DKfRRjnssh4t1hAxg/w7GdX47XwK4BuN5xE3qBd+fe1pvi2kgH6?= =?us-ascii?Q?e+AcDV57kXI=3D?= X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:SJ0PR11MB4845.namprd11.prod.outlook.com;PTR:;CAT:NONE;SFS:(13230040)(366016)(376014)(1800799024);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?rSL/XReUhVXHieGwL3IRg1/aZ6yyUi6kxnYR2PBY8rkk4sfdhpfnWfkzRx4/?= =?us-ascii?Q?VzsfkiiLg7YeHbpENmAXPGEICwHMJssu5V6nFX61GDugX3+2pP8cI3JtUp/C?= =?us-ascii?Q?EWuAXmGW3aJKOV3up7fx+TNIrAIn+elMRP/A7A0uKy7O80exkTqk5o4ftxIT?= =?us-ascii?Q?b7gna9lUptEUV+6ReThk4mOi6GiaZ5iwvX/1J+0HJnZIY39wqvYlFlHuWt8Q?= =?us-ascii?Q?UZu3VsY2eAlTLA2WE4SoOuvcLPC/22GV4nAa1wlzmwtMcfouqyOmBt9xn5Hb?= =?us-ascii?Q?2zt2eljD+FCPMeQsEjA7vvWDsvix7zzkjC3ICBTvkiD4WNRpepgGp0mzmrf/?= =?us-ascii?Q?WrVHqzuCfi7+6cUM5UEQlUM0FvH+pqILjwaxf2geOsOZcwnUPc4VbzeNrwFa?= =?us-ascii?Q?oVj/JgtUSitzW+KMCiOsWldgXu9zucIGeEMgZF32RrYXUVwPiKUgUIZWOUFZ?= =?us-ascii?Q?70ewV4Q22ixJimyc7SzjCeo0vc68WF6fyk55pL5YQUwxfLLOB44QX9aoMvIH?= =?us-ascii?Q?7hZofV2KF2/gDl7eqXlxE6Oln9m0sOcpwfXnbNCIywLqXKRHuE0XLzzXinY6?= =?us-ascii?Q?liR7iU4Zc7C54lw+sWcO3wLeciVLxW00TlOMg2x8NrfxZ3FJ+bBy3xK0pw7m?= =?us-ascii?Q?ZmkXsNG+57DC+nIAjbemrnowvdJIb2ZswCoyvJdFwlHY3PD5c9NFAHepDx7d?= =?us-ascii?Q?3qQWhKhRszGeT4qAaQeJLHVUaoqaYa/BlOCoQJumu9VJnrrEougaBA5Mx/zB?= =?us-ascii?Q?KGUPR7UTLu9jpIhnkC0ltnmSi7r4nR354o3zOGHhjgcOZqJo8xZhSjBnTJwj?= =?us-ascii?Q?j7anA4s7Y+hJ1F0nYQm9VmEm8rKg8+Qk7y+JudDK6U1iapBI7q4uLkk4tJTD?= =?us-ascii?Q?wLtPsTk2vseOCWCfjhb4ZJ9ktEdBqLWdtISaEYbIrOZY7+/tSX0wFJ5/rZZt?= =?us-ascii?Q?+6BoECTyHgYwM0sIliEDmMsD9zKjp4fuQDaF70ruLn+zAEl8JcGxQklXBvgq?= =?us-ascii?Q?jHUYCSM+B2lNw8ShUU+uZxnRRnQrSdQXu7rNSNrrkaFgvEM5q6G61Vdv+2/D?= =?us-ascii?Q?TdwhMHjSXjkQpRT+aRQiJRI6jiK+XJDYj+GDWwDq0VrU33IVhImZ47vDWIf1?= =?us-ascii?Q?bU8vPONkv9JDPHBU/CNOemUxRnHgUQTDUGyxoyzmnYl4jsnUboje0hOdhdBo?= =?us-ascii?Q?Ykj3gwCyDQub4Oj6NQluJzGC5a+hTDXTvDTkUIMoQtowBE0zNjEUKlKKdA8L?= =?us-ascii?Q?E8usoOHwid8+A2lHuOfXKqm6Ay2ZLesY4ANX7LG2SGtugO4pP2lYyao2Zapn?= =?us-ascii?Q?3kdZx+b+sPgFuAQlRLM4WF22BBbhnuoM/iEpj5doFP7K9+nd5hsXwM/c1Bzk?= =?us-ascii?Q?Ugfgqko/1P+7wxkCaX3JxrGZKQnEOsOJIR/wKBUA3v8fNUdL80UP9BkOOUFC?= =?us-ascii?Q?a2UOBtnmey3F9K3DXxPGwNLWONFVEFDWREre2Amlh3DXdXUE/NiDJyf/HkyD?= =?us-ascii?Q?C0D7wrZD6RG+YgtUld5LC3Peq+b5wIwm85TTf+IHDpAxlnbYy5GzYty5U1i/?= =?us-ascii?Q?9te6a+lkYRA5Gg92WnXujbcgzDH92V6S8PVLnphh?= X-MS-Exchange-CrossTenant-Network-Message-Id: 28b707f0-d953-4710-f7dd-08ddb7a9908b X-MS-Exchange-CrossTenant-AuthSource: SJ0PR11MB4845.namprd11.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 30 Jun 2025 07:41:48.4926 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 46c98d88-e344-4ed4-8496-4ed7712e255d X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: skdDHhr4ijbMk3N2T6aF+F0q8W+a3A0R5DNQzdff46CYjfE8DecvHbrS7RpDgCJWHnA16eJLFtwGCb+6pYs98g== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM3PPF5217261E0 X-OriginatorOrg: intel.com On Sun, Jun 29, 2025 at 11:04:31PM +0200, Paul Menzel wrote: > Dear Linux folks, > > > Just a heads-up, that very likely, merging of branch *drm-fixes-2025-06-28* > causes flickering of the panel of the Intel Kaby Lake laptop Dell XPS 13 > 9360. 6.16.0-rc3 works fine, and with 6.16-rc3-00329-gdfba48a70cb6 the panel > flickers. I try to bisect, but maybe you already have an idea. One possibility is: a3ef3c2da675 ("drm/dp: Change AUX DPCD probe address from DPCD_REV to LANE0_1_STATUS") Could you open a ticket for this and provide a drm.debug=0x10e log with 6.16-rc4 and try if the following commits in drm-tip fixes the issue?: 5281cbe0b55a ("drm/edid: Define the quirks in an enum list") 0b4aa85e8981 ("drm/edid: Add support for quirks visible to DRM core and drivers") b87ed522b364 ("drm/dp: Add an EDID quirk for the DPCD register access probe") ed3648b9ec4c ("drm/i915/dp: Disable the AUX DPCD probe quirk if it's not required") I also pushed these to: https://github.com/ideak/linux/commits/dpcd-probe-quirk Thanks, Imre > Kind regards, > > Paul > > > $ lspci -nn > 00:00.0 Host bridge [0600]: Intel Corporation Xeon E3-1200 v6/7th Gen Core > Processor Host Bridge/DRAM Registers [8086:5904] (rev 02) > 00:02.0 VGA compatible controller [0300]: Intel Corporation HD Graphics 620 > [8086:5916] (rev 02) > 00:04.0 Signal processing controller [1180]: Intel Corporation Xeon E3-1200 > v5/E3-1500 v5/6th Gen Core Processor Thermal Subsystem [8086:1903] (rev 02) > 00:14.0 USB controller [0c03]: Intel Corporation Sunrise Point-LP USB 3.0 > xHCI Controller [8086:9d2f] (rev 21) > 00:14.2 Signal processing controller [1180]: Intel Corporation Sunrise > Point-LP Thermal subsystem [8086:9d31] (rev 21) > 00:15.0 Signal processing controller [1180]: Intel Corporation Sunrise > Point-LP Serial IO I2C Controller #0 [8086:9d60] (rev 21) > 00:15.1 Signal processing controller [1180]: Intel Corporation Sunrise > Point-LP Serial IO I2C Controller #1 [8086:9d61] (rev 21) > 00:16.0 Communication controller [0780]: Intel Corporation Sunrise Point-LP > CSME HECI #1 [8086:9d3a] (rev 21) > 00:1c.0 PCI bridge [0604]: Intel Corporation Sunrise Point-LP PCI Express > Root Port #1 [8086:9d10] (rev f1) > 00:1c.4 PCI bridge [0604]: Intel Corporation Sunrise Point-LP PCI Express > Root Port #5 [8086:9d14] (rev f1) > 00:1c.5 PCI bridge [0604]: Intel Corporation Sunrise Point-LP PCI Express > Root Port #6 [8086:9d15] (rev f1) > 00:1d.0 PCI bridge [0604]: Intel Corporation Sunrise Point-LP PCI Express > Root Port #9 [8086:9d18] (rev f1) > 00:1f.0 ISA bridge [0601]: Intel Corporation Sunrise Point-LP LPC Controller > [8086:9d58] (rev 21) > 00:1f.2 Memory controller [0580]: Intel Corporation Sunrise Point-LP PMC > [8086:9d21] (rev 21) > 00:1f.3 Audio device [0403]: Intel Corporation Sunrise Point-LP HD Audio > [8086:9d71] (rev 21) > 00:1f.4 SMBus [0c05]: Intel Corporation Sunrise Point-LP SMBus [8086:9d23] > (rev 21) > 3a:00.0 Network controller [0280]: Qualcomm Atheros QCA6174 802.11ac > Wireless Network Adapter [168c:003e] (rev 32) > 3b:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS525A PCI > Express Card Reader [10ec:525a] (rev 01) > 3c:00.0 Non-Volatile memory controller [0108]: SK hynix PC300 NVMe Solid > State Drive 512GB [1c5c:1284]