FreeBSD 10.4 kernel breaks on i7-7700 / PRIME H270M-PLUS

[Eugene Grosbein]

02.04.2018 5:00, Mark Knight wrote:

> I'm trying to do the usual src code upgrade from FreeBSD 10.3 to 10.4, as I've done many times before with earlier version bumps.
> 
> However, for some reason the 10.4 kernel seems to break my system, either with the 10.3 or 10.4 userland.
> 
> The main issue seems to be some sort of deadlock.
> For example, on the console, following boot (which seems fairly normal)
> I can login to the console as root, but when I try to use commands like
> su or sudo to switch to another user, that command hangs and at that point CTRL-C is useless:
> I have to switch to another tty.

What does it show if you press "CTRL-T" to see a status of "hung" process?

Does it help if you comment out the line mentioning /dev/console in the /etc/syslog.conf
and apply the change with killall -1 syslogd ?