#regzbot introduced: v7.2.2..v7.3-rc1 #regzbot title: amdgpu: "pixel format with alpha exposed but blend mode not setup" warnings on Renoir/Barcelo
Hi, After updating from kernel v7.2.2 to v7.3-rc1, several DRM plane warnings regarding unset blend modes for pixel formats with alpha channels started appearing in dmesg during initialization. Good Version: - Kernel: 7.2.2-070202-generic - Display Core: v3.2.384 - Result: Driver initializes cleanly without plane/blend mode warnings. Bad Version: - Kernel: 7.3.0-070300rc1-generic - Display Core: v3.2.392 - Result: Driver emits the following warnings in dmesg: [drm] [PLANE:44:plane-0] pixel format with alpha exposed but blend mode not setup. Please fix. [drm] [PLANE:51:plane-1] pixel format with alpha exposed but blend mode not setup. Please fix. [drm] [PLANE:58:plane-2] pixel format with alpha exposed but blend mode not setup. Please fix. [drm] [PLANE:65:plane-3] pixel format with alpha exposed but blend mode not setup. Please fix. [drm] [PLANE:99:plane-7] pixel format with alpha exposed but blend mode not setup. Please fix. [drm] [PLANE:104:plane-8] pixel format with alpha exposed but blend mode not setup. Please fix. [drm] [PLANE:109:plane-9] pixel format with alpha exposed but blend mode not setup. Please fix. [drm] [PLANE:114:plane-10] pixel format with alpha exposed but blend mode not setup. Please fix. Hardware / Environment: - Hardware: AMD Renoir / Barcelo APU (DCN 2.1) - CPU Scaling Driver: amd-pstate-epp - Kernel cmdline: BOOT_IMAGE=/boot/vmlinuz-... root=UUID=87f96fe9-4a93-4725-95bb-dd53087bb7a8 ro quiet splash crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M Let me know if further logs or tests are needed. Best regards, Robson
