root@one:~# dmesg -C root@one:~# echo 4 > /sys/module/drm/parameters/debug root@one:~# psplash-drm using card '/dev/dri/card0' mode for connector 32 is 640x480 exiting root@one:~# dmesg [ 3343.431578] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:32:DPI-1] [ 3343.431946] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:32:DPI-1] probed modes : [ 3343.431994] [drm:drm_mode_debug_printmodeline] Modeline "640x480": 59 25000 640 672 720 808 480 493 496 528 0x48 0xa [ 3343.438238] stm32-display 5a001000.display-controller: [drm:drm_mode_addfb2] [FB:43] [ 3343.440537] [drm:drm_mode_setcrtc] [CRTC:38:crtc-0] [ 3343.440620] [drm:drm_mode_setcrtc] [CONNECTOR:32:DPI-1] [ 3345.465001] [drm:drm_mode_setcrtc] [CRTC:38:crtc-0] [ 3345.465113] [drm:drm_mode_setcrtc] Unknown FB ID0 [ 3345.465568] stm32-display 5a001000.display-controller: [drm:drm_mode_rmfb_work_fn] Removing [FB:43] from all active usage due to RMFB ioctl [ 3345.465653] stm32-display 5a001000.display-controller: [drm:atomic_remove_fb] Disabling [PLANE:34:plane-0] because [FB:43] is removed root@one:~# root@one:~# root@one:~# root@one:~# root@one:~# dmesg -C root@one:~# /usr/share/examples/opengl/hellowindow/hellowindow QEGLPlatformContext: Failed to create context: 3005 ^C root@one:~# dmesg [ 3214.139483] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:32:DPI-1] [ 3214.139847] [drm:drm_helper_probe_single_connector_modes] [CONNECTOR:32:DPI-1] probed modes : [ 3214.139903] [drm:drm_mode_debug_printmodeline] Modeline "640x480": 59 25000 640 672 720 808 480 493 496 528 0x48 0xa