Hi
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 [1] 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.
[1]: http://0pointer.de/blog/projects/serial-console.html
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
installer images.
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, [1] 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?
Cheers,
Frank
