I had very strange error after I upgraded my Fedora 27 (rawhide). After upgrading, and rebooting, login stalls forever. This seems to happen when polkitd could not be started by systemd.
It appeared similar to this:
polkit.service operation timed out. Terminating.
systemd: Failed to start Authorization Manager.
Job for polkit.service failed. See 'systemctl status polkit.service' and 'journalctl -xn' for details.
So, what I did (since nothing good happened while entering init=/bin/bash in kernel command line in GRUB2 menu), I de-installed polkit package. Because of dependencies, it de-installed most of gnome and some "other" packages.
After rebooting, I was able to get to normal run level 3 (and I have all 6 terminals), but network would not work. It'll show ONLY IPV6 on ETH (ens33 I/F), no sign of Wireless at all. And even giving IPV4 address manually to ETH/ens33, it would not ping wireless router (address which of I know).
ifconfig command shows something like this:
ens33 Link encap:Ethernet HWaddr e8:03:9a:97:61:b1
inet6 addr: fe80::ea03:9aff:fe97:61b1/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets: 0 errors:0 dropped:1 overruns:0 frame:0
TX packets: 0 errors:0 dropped:0 overruns:0 carrier:0
RX bytes: TX bytes:
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:1289 errors:0 dropped:0 overruns:0 frame:0
TX packets:1289 errors:0 dropped:0 overruns:0 carrier:0
RX bytes:114509 (114.5 KB) TX bytes:114509 (114.5 KB)
I tried many things, but not able to connect with the host (since my Fedora rawhide is, after all, VM).