Whenever I boot my beefy miracle laptop, I see these two error messages.

Failed to start LSB: Init script for TCSD.
See 'systemctl status tcsd.service' for details.
Failed to start LSB: Starts and stops login and scan...iSCSI devices..
See 'systemctl status iscsi.service' for details.

They don't seem to have any side effect and I can still use my laptop normally. Looking further into these services, tcsd is started by the trousers package for TPM chip devices and iscsi is for network booting. Both of which I don't need. So, most likely these two services can be disabled permanently altogether. It will also improve my boot time as well.

$ sudo systemctl disable tcsd.service

$ sudo systemctl disable iscsi.service

$ sudo systemctl disable iscsid.service


Verify.

$ sudo chkconfig --list


$ sudo chkconfig --list
[sudo] password for adrian:

Note: This output shows SysV services only and does not include native
systemd services. SysV configuration data might be overridden by native
systemd configuration.

iscsi 0:off 1:off 2:off 3:off 4:off 5:off 6:off
iscsid 0:off 1:off 2:off 3:off 4:off 5:off 6:off
livesys 0:off 1:off 2:off 3:on 4:on 5:on 6:off
livesys-late 0:off 1:off 2:off 3:on 4:on 5:on 6:off
netconsole 0:off 1:off 2:off 3:off 4:off 5:off 6:off
network 0:off 1:off 2:off 3:off 4:off 5:off 6:off
tcsd 0:off 1:off 2:off 3:off 4:off 5:off 6:off
All good.