On Fri, Apr 1, 2011 at 7:58 PM, Adam Williamson <awilliam(a)redhat.com> wrote:
systemd's native concept is 'targets'; graphical.target
is roughly
equivalent to runlevel 5 and multi-user.target is roughly equivalent to
runlevel 3. rescue.target is roughly equal to runlevel 1, and there's
emergency.target that's more or less what it sounds like. IIRC, the
'native' kernel parameter you can use to specify a particular target is
systemd.default , so you could try:
systemd.default=emergency.target
or
systemd.default=rescue.target
as kernel parameters and see if those work.
It is also useful to know how to rescue a failed X session after
booting and in the middle of a graphical problem once logged in.
On the old (current!) days you could switch also to a non-graphical VT
and enter telinit 3 to go into runlevel 3 during a normal session or
if X broke, and then reenable runlevel 5 by telinit 5. Is there going
to remain an equivalent after f15 release - i.e. will switching to say
VT 3 using the standard shortcut still be possible - and then I guess
login as root and do systemctl stop prefdm.service and then systemctl
start prefdm.service to reenable the graphical screen?
--
mike c