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Wed, 22 Apr 2026 09:31:04 -0500 Received: from [10.254.93.15] (10.180.168.240) by satlexmb07.amd.com (10.181.42.216) with Microsoft SMTP Server id 15.2.2562.17 via Frontend Transport; Wed, 22 Apr 2026 09:31:03 -0500 Message-ID: <426dc28a-5351-4a15-a80c-ed6dea9c910e@amd.com> Date: Wed, 22 Apr 2026 10:31:03 -0400 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 1/1] drm/amd/display: complete cursor vblank events immediately To: Shengyu Qu , Michele Palazzi CC: , , , , , =?UTF-8?Q?Michel_D=C3=A4nzer?= References: <20260217191632.1243826-1-sysdadmin@m1k.cloud> <2be6dc58-e2dc-4733-aa25-26329cd1d2d3@amd.com> <49434297-d6e8-4eaf-b4c7-ce14134d7869@amd.com> <96f4df42-2675-4bda-b0f2-753b09f7a80d@m1k.cloud> <6e1f5a30-82c3-4872-add3-7d46a266c37c@m1k.cloud> <6ac9fc7f-0493-446f-97e8-760a54e209d8@amd.com> <7fdc3c4f-c321-48f5-93f9-17a1a8ded9f8@m1k.cloud> <1356e93b-af76-47f3-afc5-29535a9518bb@amd.com> <51219a7b-eeec-43f2-a335-06710809415c@m1k.cloud> <7a148774-3364-4ce2-9f55-2e77889bfb53@amd.com> <4e48ec7b-ac73-4637-9e42-9c328067ed72@amd.com> Content-Language: en-US From: Leo Li In-Reply-To: Content-Type: text/plain; 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Ip=[165.204.84.17]; Helo=[satlexmb07.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CH2PEPF0000009A.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ1PR12MB6052 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 2026-04-18 15:37, Shengyu Qu wrote: > Hi Leo, > > Could you merge this patch first and do more discovery into this bug > later? Since this solve some problems for users. > > Best regards, > Shengyu Hi Shengyu, Michele I vaguely recall that restoring the old 5s vblank off delay helped alleviate this by allowing idle less frequently. That may be a better bandaid for now. Let me know if the below patch helps, we'll merge it if it does. Thanks, Leo --- diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index 3fa4dbda4517c..ce5063928413c 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -9511,9 +9511,21 @@ static void manage_dm_interrupts(struct amdgpu_device *adev, if (acrtc_state) { timing = &acrtc_state->stream->timing; - if (amdgpu_ip_version(adev, DCE_HWIP, 0) < - IP_VERSION(3, 5, 0) || - !(adev->flags & AMD_IS_APU)) { + if (amdgpu_ip_version(adev, DCE_HWIP, 0) >= + IP_VERSION(3, 2, 0) && + !(adev->flags & AMD_IS_APU)) { + /* + * DGPUs NV3x and newer that support idle optimizations + * experience intermittent flip-done timeouts on cursor + * updates. Restore 5s offdelay behavior for now. + * + * Discussion on the issue: + * https://lore.kernel.org/amd-gfx/20260217191632.1243826-1-sysdadmin@m1k.cloud/ + */ + config.offdelay_ms = 5000; + config.disable_immediate = false; + } else if (amdgpu_ip_version(adev, DCE_HWIP, 0) < + IP_VERSION(3, 5, 0)) { /* * Older HW and DGPU have issues with instant off; * use a 2 frame offdelay. -- 2.53.0