Bug#745550: May be related to systemd

[Felipe Sateler]

Hi Eric,

On Tue, May 27, 2014 at 3:27 AM, Eric Valette <Eric.Valette at free.fr> wrote:
> On 05/27/2014 01:25 AM, Felipe Sateler wrote:
>
> On Mon, May 19, 2014 at 10:33 AM, Eric Valette <Eric.Valette at free.fr> wrote:
>
> > > When I saw problem with dbus and as I moved recently to systemd init, I
> > > suspected systemd changes/init system chnage might be related. Switched
> > > back to sysv init and problem is gone. I now have my analog audio device
> > > back, pulseaudio does no more hange same thing for Phonon.
>
> > Are you sure this is the correct bug? I think this is meant for #748651
>
> Absolutely. It is while I tried to debug this one that I discovered  #748651
> by trying to launch pulseaudio in debug mode and it was stuck for 2 mins.
> For the record, I also suffered #745550  on my home main computer: no sound,
> kde multimedia pulseaudio config hanging at launch, but had to leave home
> for work before fixing it. Then on my professional computer, I discovered I
> had no sound too and that the analog audio device indeed disappeared as per
> this bug.
>
> Bug #74865, led me to dbus and as moving to systemd was one of the main
> change I did recently on both computers and I know it heavily uses
> dbus/udev, I tried to switch back to sysv init and it solved the problem
> right away on both machines. I have no clue on the reason and anyway, the
> number of bug I have found already using systemd is huge enough and I will
> wait a bit it stabilize.

So, let me summarize what you did:

1. After some upgrades, pulseaudio didn't see the analog output, just
the HDMI one.
2. Around the same time, pulseaudio started hanging on startup,
returning EAGAIN from the system dbus socket
3. Installing sysvinit-core fixes both issues

Is this understanding correct?

If so, I'm still not sure these are both the same bug: (3) could be a
race in the boot scripts only exposed by systemd, unrelated to the
dbus issue.

Are you willing to try to reproduce the issues again using systemd?
This can be done by passing init=/bin/systemd in the grub screen (no
need to reinstall systemd-sysv). Although I fear we will need help
from the dbus and systemd folks to debug this.

-- 

Saludos,
Felipe Sateler