@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 -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux-raspi2 in Ubuntu. https://bugs.launchpad.net/bugs/1850876 Title: CONFIG_DRＭ_V3D is disabled for linux-raspi2 of eoan Status in linux-raspi2 package in Ubuntu: Fix Released Status in linux-raspi2 source package in Eoan: Triaged Bug description: We enabled DRM_VC4 in the linux-raspi2 of eoan, but disabled the DRM_V3D. In fact the DRM_V3D is crucial for graphical applications (such as ubuntu-desktop :) as it removes the graphical overhead from the cpu to the gpu, making the applications work much faster. Please refer to https://bugs.launchpad.net/ubuntu/+source/linux- raspi2/+bug/1848703/comments/32 [Impact] Users reported that we should enable the DRM_V3D, then the GPU will be fully used when running "ubuntu-desktop" [Fix] Enable the DRM_V3D, the v3d.ko will be built [Test Case] Users already tested it, it worked well. https://bugs.launchpad.net/ubuntu/+source/linux-raspi2/+bug/1848703/comments/36 [Regression Risk] Low, I already did building test for arm64 and armhf, all passed. And uers already tested the kernel module, it worked as expected. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-raspi2/+bug/1850876/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
