Re: Fixing the missing serial console after installation issue
On 09/30/2017 10:54 AM, John Paul Adrian Glaubitz wrote:
Some users of Linux on sparc64 have noticed that the serial console is not working
directly after installation. This is because systemd does not enable the serial
console by default.
Does anyone have a suggestion for a patch? I'd be happy to push it :).
Not sure, but  says that it should be sufficient to add all console
devices to the kernel command line for systemd to detect and activate
them, e.g. `console=ttyS0,9600n8` - which includes port and configuration.
This worked for me on non-SPARC machines (on HP C and J class machines
where it is added by palo derived from the firmware setting, POWER5
machines via yaboot configuration, Alpha machines through SRM boot
command, etc.) with systemd, but I can't remember if I explicitly
configured this on the Ultra 10 or SunFire V245 I used for testing your
I think headless Sun UltraSPARC systems - and maybe others like HP
Itanium systems, too - will activate the serial console automatically
without explicit configuration in the kernel command line - at least for
kernel messages - but without an explicit serial console configuration
in the kernel command line, systemd might not get the message.
As alternative,  also explains how to configure systemd directly via
a systemd unit further below (in "Serial Terminals").
Or does systemd not enable a serial console for the mentioned users
despite using a serial console configuration in the kernel command line?