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<div class="moz-cite-prefix">On 05/27/2014 05:23 PM, Felipe Sateler
wrote:<br>
</div>
<blockquote
cite="mid:CAAfdZj8ps0O=NWRPhDBSzs=zWc_=NVvVs6pKEEfd9dirmCD9Hg@mail.gmail.com"
type="cite">
<pre wrap="">Hi Eric,
</pre>
<pre wrap="">
So, let me summarize what you did:
1. After some upgrades, pulseaudio didn't see the analog output, just
the HDMI one.</pre>
</blockquote>
I just *first* noticed I had no more sound. As in both case I use
analog output and not HDMI (because monitors I use have no
speakers), the cause was probably the same (no more analog audio
device) on the two machines although after fixing it on one computer
I only verified that reinstalling sysinit-core on the second and
rebooting also fixed the problem on the second machine.<br>
<blockquote
cite="mid:CAAfdZj8ps0O=NWRPhDBSzs=zWc_=NVvVs6pKEEfd9dirmCD9Hg@mail.gmail.com"
type="cite">
<pre wrap="">
2. Around the same time, pulseaudio started hanging on startup,
returning EAGAIN from the system dbus socket</pre>
</blockquote>
While trying to debug the "no sound", I noticed first kde
audio/multimedia config was hanging on my first machine and later on
my other machine at work that indeed the pulseaudio was stuck for
nearly 2 mins (this probably causing the kde multimedia config panel
to hang waiting for pulse) and that anyway, at the end the analog
audio device was not there.<br>
<blockquote
cite="mid:CAAfdZj8ps0O=NWRPhDBSzs=zWc_=NVvVs6pKEEfd9dirmCD9Hg@mail.gmail.com"
type="cite">
<pre wrap="">
3. Installing sysvinit-core fixes both issues</pre>
</blockquote>
Yes on both machines.<br>
<blockquote
cite="mid:CAAfdZj8ps0O=NWRPhDBSzs=zWc_=NVvVs6pKEEfd9dirmCD9Hg@mail.gmail.com"
type="cite">
<pre wrap="">
Is this understanding correct?</pre>
</blockquote>
Yes.<br>
<blockquote
cite="mid:CAAfdZj8ps0O=NWRPhDBSzs=zWc_=NVvVs6pKEEfd9dirmCD9Hg@mail.gmail.com"
type="cite">
<pre wrap="">
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.</pre>
</blockquote>
I dunno if the bugs are indeed exactly the same or two expressions
of a same root cause but they are both fixed when going back to sysv
init. The race in the boot happens on very different type machine
(an old core i5 laptop single core/hyperthreaded with classical disk
4GB RAM and a high end core I7 quad core hyperthreaded with SSD and
16 GByte memory).<br>
<blockquote
cite="mid:CAAfdZj8ps0O=NWRPhDBSzs=zWc_=NVvVs6pKEEfd9dirmCD9Hg@mail.gmail.com"
type="cite">
<pre wrap="">
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.
</pre>
</blockquote>
If you do not manage to reproduce the bug I can spend a limited
amount of time at it. The fact that the two machines are very
different may help reproducing it. Maybe you could try to get info
from original reporter to see if his problem is also fixed by
reinstalling sysvinit-core as an extra hint.<br>
<br>
NB: both machines were using systemd 208 from experimental. I dunno
if problem is related to this version of systemd because I'm nearly
100% sure I have been using systemd208 with sound for a while before
it broke the same day after upgrading.<br>
<br>
And to be fair about my setup that is *unusual*: both machines have
a distinct / and /usr (I know this i now considered to be bad for
systemd but the 7.0 installer stills allows that without even
emitting a warning...) , do not use initramfs and self tuned recent
kernels dedicated to the machines with all drivers build-in (except
nvidia one ;-)).<br>
<br>
--eric<br>
<br>
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