Today I ran an openSUSE 13.1 KDE live DVD (kernel 3.11.6, 64 bit) in
virtualbox. The warnings I reported for my host system did not occur there.
More importantly, the problem that the sound system does not react
properly to unplugging the Axe-Fx II stays the same. As mentioned before
the Axe-Fx II does not disappear from KMix and the sound does not switch
back to the internal soundcard. So running playback streams "hang" when
the Axe-Fx II gets unplugged while they continue using the internal
soundcard (which has lower priority as an audio playback device) when
e.g. the UA-5 gets unplugged.
But I found another quite interesting and maybe even more important
thing while running the KDE live system in virtualbox:
To simulate plugging and unplugging the Axe-Fx II and UA-5 in the client
OS I just checked / unchecked the correspondent USB device in the
virtualbox window status bar respectively the menu "devices -> USB
devices -> xxx". When activating the Axe-Fx II for virtualbox it
disappeared in KMix on the host system, just as it should when
physically unplugging!
/var/log/messages showed:
pulseaudio[2424]: [alsa-sink-USB Audio] alsa-sink.c:
snd_pcm_avail: Kein passendes Gerät gefunden
I assume "Kein passendes Gerät gefunden" here translates to "No such
device".
The Axe-Fx II also reappeared as soon as I unchecked it as a USB device
in virtualbox. The sound on the host system switched accordingly between
the Axe-Fx II and the internal soundcard.
/var/log/messages showed:
kernel: [ 4020.884151] usb 2-1.5: reset high-speed USB device
number 7 using ehci-pci
Joachim
Am 12.06.2014 11:44, schrieb Daniel Mack:
> On 06/12/2014 12:14 AM, jem_7@xxxxxx wrote:
> > I just updated to kernel 3.15.0. Expectedly as with RC8 there is no change.
> >
> > Daniel, what makes you think, the 'midi3' node causes the warning? The
> > warning appears not only for 'midi3' (and 'dmmidi3'), but also
> > 'pcmC3D0p', 'pcmC3D0c' and 'control3' nodes.
>
> Do you get warnings for pcmC3D0p, pcmC3D0c and control3 as well with
> CONFIG_SOUND_OSS=n? Please try that, because I was under the impression
> that there's something wrong with the device management in the legacy
> OSS code when there's more than 3 MIDI devices or suchlike. But maybe
> I'm wrong, and there's something else going on.
>
> As I said, I can't reproduce this here yet.
>
>
> Daniel
>
>
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