@Ian,
Did you add dtoverlay=vc4-fkms-v3d in the config.txt?
This is the log on my board, looks like there is no error so far:
ubuntu@ubuntu:~$ uname -a Linux ubuntu 5.3.0-1027-raspi2 #29++v3dv2 SMP Mon Jun 15 22:26:13 CST 2020 aarch64 aarch64 aarch64 GNU/Linux
ubuntu@ubuntu:~$ dmesg | grep drm [ 3.759090] [drm] Initialized v3d 1.0.0 20180419 for fec00000.v3d on minor 0 [ 3.790362] vc4-drm soc:gpu: bound fe600000.firmwarekms (ops vc4_fkms_ops [vc4]) [ 3.798578] fb0: switching to vc4drmfb from simple [ 3.809972] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013). [ 3.816771] [drm] No driver support for vblank timestamp query. [ 3.822817] [drm] Setting vblank_disable_immediate to false because get_vblank_timestamp == NULL [ 3.866028] [drm] Initialized vc4 0.0.0 20140616 for soc:gpu on minor 1 [ 3.905537] [drm:vc4_crtc_mode_set_nofb [vc4]] *ERROR* couldn't fill AVI infoframe [ 4.031664] vc4-drm soc:gpu: fb0: vc4drmfb frame buffer device
ubuntu@ubuntu:~$ lsmod | grep v3d v3d 73728 0 gpu_sched 40960 1 v3d drm 516096 5 gpu_sched,drm_kms_helper,v3d,vc4
ubuntu@ubuntu:~$ ls /dev/dri/ -la total 0 drwxr-xr-x 3 root root 120 Jun 16 12:03 . drwxr-xr-x 15 root root 18720 Jun 16 12:04 .. drwxr-xr-x 2 root root 100 Jun 16 12:03 by-path crw-rw---- 1 root video 226, 0 Jun 16 12:03 card0 crw-rw---- 1 root video 226, 1 Jun 16 12:03 card1 crw-rw---- 1 root render 226, 128 Jun 16 12:03 renderD128
@Ian,
Did you add dtoverlay= vc4-fkms- v3d in the config.txt?
This is the log on my board, looks like there is no error so far:
ubuntu@ubuntu:~$ uname -a
Linux ubuntu 5.3.0-1027-raspi2 #29++v3dv2 SMP Mon Jun 15 22:26:13 CST 2020 aarch64 aarch64 aarch64 GNU/Linux
ubuntu@ubuntu:~$ dmesg | grep drm firmwarekms (ops vc4_fkms_ops [vc4]) disable_ immediate to false because get_vblank_ timestamp == NULL crtc_mode_ set_nofb [vc4]] *ERROR* couldn't fill AVI infoframe
[ 3.759090] [drm] Initialized v3d 1.0.0 20180419 for fec00000.v3d on minor 0
[ 3.790362] vc4-drm soc:gpu: bound fe600000.
[ 3.798578] fb0: switching to vc4drmfb from simple
[ 3.809972] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[ 3.816771] [drm] No driver support for vblank timestamp query.
[ 3.822817] [drm] Setting vblank_
[ 3.866028] [drm] Initialized vc4 0.0.0 20140616 for soc:gpu on minor 1
[ 3.905537] [drm:vc4_
[ 4.031664] vc4-drm soc:gpu: fb0: vc4drmfb frame buffer device
ubuntu@ubuntu:~$ lsmod | grep v3d drm_kms_ helper, v3d,vc4
v3d 73728 0
gpu_sched 40960 1 v3d
drm 516096 5 gpu_sched,
ubuntu@ubuntu:~$ ls /dev/dri/ -la
total 0
drwxr-xr-x 3 root root 120 Jun 16 12:03 .
drwxr-xr-x 15 root root 18720 Jun 16 12:04 ..
drwxr-xr-x 2 root root 100 Jun 16 12:03 by-path
crw-rw---- 1 root video 226, 0 Jun 16 12:03 card0
crw-rw---- 1 root video 226, 1 Jun 16 12:03 card1
crw-rw---- 1 root render 226, 128 Jun 16 12:03 renderD128