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darkman

Member

Registered: 2012-08-06

Posts: 8

[solved?] Phonon, amarok - audio via usb external produces big noise

First of all, it was working perfectly till few updates ago.

Here's what's happening now.
I use amarok and i have an external usb audio card.

When i plug the usb card to the laptop, i start to hear music coming from the external device.
Ok, perfect.

After, more or less, 1 minute, i start to hear big hisses and scratches mixed with the audio. There's something wrong going on with the audio from kde.
(it's not a problem of the external device)

if i look on /var/log/everything.log i always see these lines:

Jan 26 11:34:12 localhost kernel: [ 1221.804246] 5:1:1: cannot get freq at ep 0x1
Jan 26 11:34:12 localhost kernel: [ 1221.817583] 5:2:1: cannot get freq at ep 0x82
Jan 26 11:34:12 localhost kernel: [ 1221.830058] 5:1:1: cannot get freq at ep 0x1
Jan 26 11:34:12 localhost kernel: [ 1221.843079] 5:2:1: cannot get freq at ep 0x82
Jan 26 11:34:12 localhost kernel: [ 1222.350062] 5:1:2: cannot get freq at ep 0x1

sometimes these lines are shorter

Jan 26 11:29:13 localhost kernel: [  922.766494] 2:2:1: cannot get freq at ep 0x82
Jan 26 11:29:13 localhost kernel: [  922.780493] 2:2:1: cannot get freq at ep 0x82

etc etc..

I'm using gstreamer as backend of phonon. any ideas?
Notice: this problem does not occour while using JACK.
But, if first i open amarok, i plug the usb device, then close amarok and then use JACK, the problem happens.

So, it's surely correlated with phonon.
any ideas?

Thanks in advance

-------------------------------------------
edit:
i close Skype (that was idle on the systray); exit/re-enter in kde. The problem seems solved.
Moreover, that lines no more appear on the log.

I think there's a bug on skype and on kde's phonon system.

Actually this is a bit frustrating because i can't use skype while listening music on external device.
I don't think that the problem is solved, actually is just a workaround...

Last edited by darkman (2014-01-26 12:58:29)