[Pkg-utopia-maintainers] Bug#769069: systemd: Failed to start Login Service

[Simon McVittie]

On 17/11/14 23:12, Simon McVittie wrote:
> I happened to notice (via LWN) that Mageia have reverted part of a
> recent dbus denial-of-service fix.

Now discussed upstream at
<https://bugs.freedesktop.org/show_bug.cgi?id=86431>

> I'll look into adding logging when this timeout is hit.

Paul, would you mind trying a patched dbus which can confirm whether
you're hitting this timeout or something else? Source and i386 binaries
here, with hashes signed by my key in the Debian keyring:

<https://www.pseudorandom.co.uk/~smcv/20141118dbus/>

or if you're comfortable rebuilding Debian packages, you can rebuild
dbus with the logging patch from
<https://bugs.freedesktop.org/show_bug.cgi?id=86431#c4>, like this:
<https://www.pseudorandom.co.uk/~smcv/20141118dbus/dbus_1.8.10-1+auth1.diff>.

With that installed, please configure dbus for the potentially
problematic 5-second timeout: if you have already configured a custom
<limit name="auth_timeout">, please remove it. Then reboot enough times
to see the bad behaviour, and collect the syslog or journalctl.

You can set an arbitrary timeout in milliseconds by putting something
like this in /etc/dbus-1/system-local.conf:

    <busconfig>
       <limit name="auth_timeout">30000</limit>
    </busconfig>

The old default was 30000, and if this is indeed what's causing your
startup problems, I'm proposing to return to that.

On the oldest machine I had conveniently to hand, running testing with
systemd and the GNOME desktop task, I could go as low as 100 (0.1
second) and get to the gdm prompt without seeing any problems. 5 (0.005
seconds) caused ModemManager to fail, and 1 (0.001 seconds) caused lots
of services to fail, including systemd-logind.

    S