Bug#801354: libpam-systemd: breaks lightdm: Failed to create session: Connection timed out

[Michael Biebl]

Am 09.10.2015 um 03:13 schrieb Vincent Lefevre:
> Package: libpam-systemd
> Version: 227-1
> Severity: serious
> 
> After the upgrade to systemd packages 227-1, I get various timeouts
> with lightdm:
> 
> [...]
> Oct 09 02:57:45 zira systemd[1581]: run-rpc_pipefs.mount: Mount process exited, code=exited status=1
> Oct 09 02:57:45 zira systemd[1581]: Failed unmounting /run/rpc_pipefs.
> Oct 09 02:57:45 zira umount[1587]: umount: /boot: umount failed: Operation not permitted
> Oct 09 02:57:45 zira umount[1588]: umount: /dev/hugepages: umount failed: Operation not permitted
> Oct 09 02:57:45 zira umount[1589]: umount: /sys/kernel/debug: umount failed: Operation not permitted
> Oct 09 02:57:45 zira umount[1591]: umount: /run/rpc_pipefs: umount failed: Operation not permitted
> Oct 09 02:57:45 zira umount[1590]: umount: /dev/mqueue: umount failed: Operation not permitted
> Oct 09 02:57:45 zira umount[1593]: umount: /proc/sys/fs/binfmt_misc: umount failed: Operation not permitted

Why does a simple umount fail? Which version of libmount1/mount  is
installed?

Please provide a verbose debug log from the complete boot.

-- 
Why is it that all of the instruments seeking intelligent life in the
universe are pointed away from Earth?

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