Comment 7 for bug 1898935

I can confirm that it works with package 2.14.0-1ubuntu1.1:
$ dpkg -l | grep s390-tools
ii s390-tools 2.14.0-1ubuntu1.1 s390x fundamental utilities for Linux on z Systems
ii s390-tools-signed 2.14.0-1ubuntu1.1 s390x Signed zipl stage3.bin

I get again proper version and help info - even if the sampling facility is not active:

$ chcpumf -v
CPU-measurement facility utilities, version 2.12.0-build-20200320
Copyright IBM Corp. 2014, 2017

$ chcpumf -h
Usage: chcpumf -h|-v
 chcpumf -m num_sdb
 chcpumf -x num_sdb

Options:
 -m num_sdb Specifies the initial size of the sampling buffer.
        A sample-data-block (SDB) consumes about 4 kilobytes.
 -x num_sdb Specifies the maximum size of the sampling buffer.
        A sample-data-block (SDB) consumes about 4 kilobytes.
 -h Displays help information, then exits.
 -v Displays version information, then exits.

For more help information, issue 'man chcpumf'.

Adjusting the tags accordingly ...