LinuxMusicians

Posted: **Thu Jan 23, 2014 1:30 am**

Hi.
I'm trying to run KXStudio on a new iMac (i don't really know much about macs, but it's a new one with no CD reader) from scratch.
Everything seems to work except the audio (and the WiFi, but that's not so important, we have a ethernet wire). When I try to start jack it fails, I'm thinking there's some issue with the audio card?. The log shows this:

Code: Select all

Wed Jan 22 19:12:23 2014: ------------------
Wed Jan 22 19:12:23 2014: Controller activated. Version 1.9.10 (unknown) built on Wed Jan 22 17:04:08 2014
Wed Jan 22 19:12:23 2014: Loading settings from "/home/ccd/.config/jack/conf.xml" using expat_2.0.1 ...
Wed Jan 22 19:12:23 2014: setting parameter 'engine':'driver':'(null)' to value "alsa"
Wed Jan 22 19:12:23 2014: setting parameter 'engine':'realtime':'(null)' to value "true"
Wed Jan 22 19:12:23 2014: setting parameter 'engine':'realtime-priority':'(null)' to value "85"
Wed Jan 22 19:12:23 2014: setting parameter 'drivers':'alsa':'rate' to value "44100"
Wed Jan 22 19:12:23 2014: setting parameter 'drivers':'alsa':'nperiods' to value "2"
Wed Jan 22 19:12:23 2014: Listening for D-Bus messages
Wed Jan 22 19:12:24 2014: Starting jack server...
Wed Jan 22 19:12:24 2014: JACK server starting in realtime mode with priority 85
Wed Jan 22 19:12:24 2014: Acquired audio card Audio0
Wed Jan 22 19:12:24 2014: creating alsa driver ... hw:0|hw:0|1024|2|44100|0|0|nomon|swmeter|-|32bit
Wed Jan 22 19:12:24 2014: ERROR: ALSA: Cannot open PCM device alsa_pcm for playback. Falling back to capture-only mode
Wed Jan 22 19:12:24 2014: ERROR: Cannot initialize driver
Wed Jan 22 19:12:24 2014: ERROR: JackServer::Open failed with -1
Wed Jan 22 19:12:24 2014: ERROR: Failed to open server

And cat /proc/asound/modules this:

0 snd_hda_intel
1 snd_aloop
2 snd_hda_intel

I also remove pulseaudio, but that does not work.

Thanks.

Posted: **Sat Jan 25, 2014 1:39 am**

It's definitely the internal audio card. I'm working with an M-Audio Fast Track-Ultra Interface and it works perfectly.

Posted: **Sat Jan 25, 2014 9:39 am**

I don't know anything about iMacs but you should check the list of capture devices and playback devices in the audio cards. "arecord -l && aplay -l"

Posted: **Tue Jan 28, 2014 8:30 pm**

OK. Lets give a try.
This is the result of "arecord -l && aplay -l"

Code: Select all

**** List of CAPTURE Hardware Devices ****
card 1: Loopback [Loopback], device 0: Loopback PCM [Loopback PCM]
  Subdevices: 8/8
  Subdevice #0: subdevice #0
  Subdevice #1: subdevice #1
  Subdevice #2: subdevice #2
  Subdevice #3: subdevice #3
  Subdevice #4: subdevice #4
  Subdevice #5: subdevice #5
  Subdevice #6: subdevice #6
  Subdevice #7: subdevice #7
card 1: Loopback [Loopback], device 1: Loopback PCM [Loopback PCM]
  Subdevices: 7/8
  Subdevice #0: subdevice #0
  Subdevice #1: subdevice #1
  Subdevice #2: subdevice #2
  Subdevice #3: subdevice #3
  Subdevice #4: subdevice #4
  Subdevice #5: subdevice #5
  Subdevice #6: subdevice #6
  Subdevice #7: subdevice #7
card 2: Ultra [Fast Track Ultra], device 0: USB Audio [USB Audio]
  Subdevices: 0/1
  Subdevice #0: subdevice #0
card 3: PCH [HDA Intel PCH], device 0: Cirrus Analog [Cirrus Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
**** List of PLAYBACK Hardware Devices ****
card 0: MID [HDA Intel MID], device 3: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: MID [HDA Intel MID], device 7: HDMI 1 [HDMI 1]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: MID [HDA Intel MID], device 8: HDMI 2 [HDMI 2]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: Loopback [Loopback], device 0: Loopback PCM [Loopback PCM]
  Subdevices: 8/8
  Subdevice #0: subdevice #0
  Subdevice #1: subdevice #1
  Subdevice #2: subdevice #2
  Subdevice #3: subdevice #3
  Subdevice #4: subdevice #4
  Subdevice #5: subdevice #5
  Subdevice #6: subdevice #6
  Subdevice #7: subdevice #7
card 1: Loopback [Loopback], device 1: Loopback PCM [Loopback PCM]
  Subdevices: 7/8
  Subdevice #0: subdevice #0
  Subdevice #1: subdevice #1
  Subdevice #2: subdevice #2
  Subdevice #3: subdevice #3
  Subdevice #4: subdevice #4
  Subdevice #5: subdevice #5
  Subdevice #6: subdevice #6
  Subdevice #7: subdevice #7
card 2: Ultra [Fast Track Ultra], device 0: USB Audio [USB Audio]
  Subdevices: 0/1
  Subdevice #0: subdevice #0
card 3: PCH [HDA Intel PCH], device 0: Cirrus Analog [Cirrus Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 3: PCH [HDA Intel PCH], device 1: Cirrus Digital [Cirrus Digital]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

Posted: **Wed Jan 29, 2014 3:37 pm**

Check this thread (still unresolved). The OP has a problem with a similar audio interface. Tramp suggests adding some option to alsa-base.conf. Eino suggests installing the driver from realtek. Check first "lspci -nnk | grep -i audio"

http://linuxmusicians.com/viewtopic.php?f=47&t=12003

LinuxMusicians

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