Ubuntu 16.04 Strange problem using "Auto get from Internet" time cannot write to hardware BIOS

This is the problem that is now discovered and can only be manually synchronized to the BIOS.

If you set the time manually, you can sync to the BIOS normally.

If you switch to automatically get time from the Internet, you can't sync to the BIOS, but the time on the interface is really up-to-date.

Workaround:

First get the latest time from the Internet and then manually write to the BIOS:

sudo hwclock-w

Ubuntu 16.04 Strange problem using "Auto get from Internet" time cannot write to hardware BIOS