Booting 5.14.0-rc4 on my box with Radeon graphics breaks with [drm:radeon_ttm_init [radeon]] *ERROR* failed initializing buffer object driver(-19). radeon 0000:01:00.0: Fatal error during GPU init after which the screen goes black for the rest of kernel boot and early user-space init. Once the console login shows up the screen is in some legacy low-res mode and Xorg can't be started. A git bisect between v5.14-rc3 (good) and v5.14-rc4 (bad) identified # first bad commit: [69de4421bb4c103ef42a32bafc596e23918c106f] drm/ttm: Initialize debugfs from ttm_global_init() Reverting that from 5.14.0-rc4 gives me a working kernel again. Note that I have # CONFIG_DEBUG_FS is not set /Mikael
