Jack cannot access /dev/dsp0

8 replies [Last post]
vlio
User offline. Last seen 19 weeks 20 hours ago. Offline
Joined: 2010-03-16

Hello,

I'm trying to use Ardour on my laptop, but I can't even get Jack running. When I launch it, I get the error

OSS: failed to open device /dev/dsp0: oss_driver.c@549, errno=16
cannot start driver

I am running Ubuntu 9.04, with OSS 4.2 (because ALSA won't work well with my HDA sound card) and I already added myself to the group "audio".

Do someone have any idea ? I did not find anything on Google...

Thanks !

rpatros
rpatros's picture
User offline. Last seen 8 weeks 6 days ago. Offline
Joined: 2008-05-30

what type of laptop do you have? I have an MSI A6000 laptop which has HDA sound card in there and ALSA is picking it fine but I am using Ubuntu 9.10.

Have you tried Ubuntu 9.10 or AVLinux 3.0R1 (http://www.bandshed.net/iso/avlinux3r1-20100201-lxde-i386-en.iso)

Hope that helps.

Rony P.

paul
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User offline. Last seen 3 hours 28 min ago. Offline
Joined: 2006-03-16

@vlio: you would have to investigate the JACK OSS backend, which is supported by only one developer, and even then only intermittently. There are very, very few users of JACK on Linux who use the OSS backend, and quite a few developers who wish that, on some level, it simply did not exist (I am one of them, even though I entirely understand the reasons for its original creation). I very much doubt that your HDA device cannot be made to work with ALSA, and I suggest you focus on that approach, since you will find many, many more people who have tackled similar issues.

vlio
User offline. Last seen 19 weeks 20 hours ago. Offline
Joined: 2010-03-16

Thanks for your comments.
When I have time I will switch to 9.10 (or more probably 10.4 by then) and try once more to make the whole ALSA/PulseAudio thing work, which will probably happen one day but for now I am pretty sure it won't work correctly (no sound in headphones, things like that).
I know there are very few people using OSS these days, which is why it's so hard to find solutions to problems with it, but for my part I am quite satisfied with the way it is working (surely better than PulseAudio last time I tried it)

thorgal
User offline. Last seen 6 days 13 hours ago. Offline
Joined: 2007-08-03

if you do not need pulseaudio, remove it or install a distro without it.

vlio
User offline. Last seen 19 weeks 20 hours ago. Offline
Joined: 2010-03-16

I already removed it from my Ubuntu to get OSS working ;-)

thorgal
User offline. Last seen 6 days 13 hours ago. Offline
Joined: 2007-08-03

any reason then why you are using OSS and not ALSA for the sound chip driver ?

seablade
User offline. Last seen 7 hours 17 min ago. Offline
Joined: 2007-01-22

@thorgal-

See the first post(And subsequent conversation;)

Seablade

thorgal
User offline. Last seen 6 days 13 hours ago. Offline
Joined: 2007-08-03

could this help ?

http://ubuntuforums.org/showthread.php?t=314383
https://help.ubuntu.com/community/HdaIntelSoundHowto