USB keyboard not working on Ubuntu server 1.0.6

I installed Ubuntu server focal on EMMC (VIM3_Ubuntu-server-focal_Linux-4.9_arm64_EMMC_V1.0.6-210520) and there are two problems:

  1. USB keyboard not working
  2. Strange logo transformation (see video:
  3. It’s okay?
root@Khadas:~# systemctl status plymouth-start.service
● plymouth-start.service - Show Plymouth Boot Screen
     Loaded: loaded (/lib/systemd/system/plymouth-start.service; static; vendor preset: enabled)
     Active: failed (Result: signal) since Sat 2021-05-29 15:41:27 UTC; 20min ago
    Process: 2840 ExecStart=/sbin/plymouthd --mode=boot --pid-file=/run/plymouth/pid --attach-to-session (code=exited, status=0/SUCCESS)
    Process: 2863 ExecStartPost=/bin/plymouth show-splash (code=exited, status=0/SUCCESS)
   Main PID: 2856 (code=killed, signal=ABRT)

May 29 15:41:20 Khadas systemd[1]: Starting Show Plymouth Boot Screen...
May 29 15:41:21 Khadas systemd[1]: Started Show Plymouth Boot Screen.
May 29 15:41:27 Khadas systemd[1]: plymouth-start.service: Main process exited, code=killed, status=6/ABRT
May 29 15:41:27 Khadas systemd[1]: plymouth-start.service: Failed with result 'signal'.

How I should fix this?

P.S. And yet: how I can on/off display?
I’m beginner in these theme, please sorry if some questions may seem stupid)

How about other USB devices?

What’s the output of lsusb ? And please provide the kernel log.

Yes, it’s OK. There are 3 logos will display during the bootup.

  • Uboot logo (Khadas Logo)
  • Kernel logo (6 small Khadas Logos)
  • Ubuntu logo (Khadas Logo & animation)

If you don’t want them, you can follow the doc to disable it.

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