[Bug 1721821] Re: sddm freezes 50 seconds before KDE Plasma starts

[vmagnin]

In JournalErrors.txt I found:

oct. 06 18:01:39 hostname NetworkManager[859]: <warn>  [1507305699.2215] dhcp6 (eth2): hostname is not a FQDN, it will be ignored
...
oct. 06 18:02:30 hostname NetworkManager[859]: <warn>  [1507305750.0731] dhcp6 (eth2): request timed out

And today with cat /var/log/syslog | grep dhcp6, I found:

Oct  9 17:07:28 pc2 NetworkManager[860]: <info>  [1507561648.3667] dhcp-init: Using DHCP client 'dhclient'
Oct  9 17:07:31 pc2 NetworkManager[860]: <info>  [1507561651.0766] dhcp4 (eth2): activation: beginning transaction (timeout in 45 seconds)
Oct  9 17:07:31 pc2 NetworkManager[860]: <info>  [1507561651.0881] dhcp4 (eth2): dhclient started with pid 1093
Oct  9 17:07:31 pc2 NetworkManager[860]: <info>  [1507561651.1397] dhcp4 (eth2):   address 192.168.1.107
Oct  9 17:07:31 pc2 NetworkManager[860]: <info>  [1507561651.1398] dhcp4 (eth2):   plen 24 (255.255.255.0)
Oct  9 17:07:31 pc2 NetworkManager[860]: <info>  [1507561651.1398] dhcp4 (eth2):   gateway 192.168.1.1
Oct  9 17:07:31 pc2 NetworkManager[860]: <info>  [1507561651.1398] dhcp4 (eth2):   lease time 86400
Oct  9 17:07:31 pc2 NetworkManager[860]: <info>  [1507561651.1398] dhcp4 (eth2):   nameserver '192.168.1.1'
Oct  9 17:07:31 pc2 NetworkManager[860]: <info>  [1507561651.1398] dhcp4 (eth2): state changed unknown -> bound
Oct  9 17:07:32 pc2 NetworkManager[860]: <info>  [1507561652.4310] dhcp6 (eth2): activation: beginning transaction (timeout in 45 seconds)
Oct  9 17:07:32 pc2 NetworkManager[860]: <warn>  [1507561652.4311] dhcp6 (eth2): hostname is not a FQDN, it will be ignored
Oct  9 17:07:32 pc2 NetworkManager[860]: <info>  [1507561652.4328] dhcp6 (eth2): dhclient started with pid 1375
Oct  9 17:08:17 pc2 NetworkManager[860]: <warn>  [1507561697.4329] dhcp6 (eth2): request timed out

The problem seem to be a problem with NetworkManager, not sddm.

Perhaps it is related to this bug:
"Bug 1334050 - Cannot prevent NetworkManager from using DHCPv6"
https://bugzilla.redhat.com/show_bug.cgi?id=1334050


** Bug watch added: Red Hat Bugzilla #1334050
   https://bugzilla.redhat.com/show_bug.cgi?id=1334050

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https://bugs.launchpad.net/bugs/1721821

Title:
  Kubuntu 17.10 freezes 50 seconds before KDE Plasma starts

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