On Mon, Dec 06, 2010 at 12:15:33PM EST, deloptes wrote: > Chris Jones wrote: > > > I am trying to set up a USB sound bar on someone else's laptop running > > ubuntu 10.10 with a gnome desktop. > > what is this sound bar? something to eat :-)?
No, a place where they charge the patrons for listening :-) [..] > > Is there any way I can make the sound bar the system's default and be > > done with it? > > you can read ALSA docs - they are weired but very good. I usually do few > steps to setup a card. You have two options - to setup system wide or user > specific That's what I was looking for. > > While testing, I tried redirection when launching programs from the bash > > prompt -- i.e. adding ‘/dev/dsp > /dev/dsp1’ -- with unsatisfactory > > results: below par sound quality, loud cracks, the speakers go silent > > for brief periods of time, etc. > > dsp is OSS (not ALSA) and it works only with additional modules (loaded and > configured) OK. > > I do not have access to the other laptop right now, but I would assume > > gnome has some sort of GUI that lets you specify your default device > > ‘system-wide’? > > check if there is pulse audio installed and running - this might be what you > are looking for (there is something pactrl or alike or gui for this - I'm > not using it but it's the future, so possibly you can use it) Will do. > > Another thing I noticed is that the volume button on the sound bar does > > not work: I have to start alsamixer to control the volume, which is not > > optimal. > > > > Does this mean that I am using a default generic audio USB driver for > > this device and that I should look for something a bit more specific > > that might support additional hardware features? > > I would say this was the configuration for the default card (built in) .. and volume and other controls on a builtin sound card would be rather inconvenient? :-) > > While I am at it I thought I might as well learn how these things work > > and stop guessing :-) > > then start reading at > http://www.alsa-project.org/main/index.php/Documentation Looks more than promising, thanks! [..] > > P.S. I refrained from posting the 3 pages output by ‘lsusb -vs’. Not > > sure if that would help at this point. > > > > thanks, but it would help though to mention what kind of chip your usb card > has (or vendor + model) Not sure about the model - the vendor is actually Logitech. $ tail /var/log/messages usb 1-1.4: USB disconnect, address 13 usb 1-1.4.4: USB disconnect, address 14 usb 1-1.4: new full speed USB device using uhci_hcd and address 15 usb 1-1.4: configuration #1 chosen from 1 choice hub 1-1.4:1.0: USB hub found hub 1-1.4:1.0: 4 ports detected usb 1-1.4: New USB device found, idVendor=05e3, idProduct=0607 usb 1-1.4: New USB device strings: Mfr=0, Product=1, SerialNumber=0 usb 1-1.4: Product: USB2.0 Hub usb 1-1.4.4: new full speed USB device using uhci_hcd and address 16 usb 1-1.4.4: configuration #1 chosen from 1 choice input: HOLTEK AudioHub Speaker as /class/input/input11 input,hidraw0: USB HID v1.10 Device [HOLTEK AudioHub Speaker] on usb-0000:00:07.2-1.4.4 usb 1-1.4.4: New USB device found, idVendor=046d, idProduct=0a0e usb 1-1.4.4: New USB device strings: Mfr=1, Product=2, SerialNumber=0 usb 1-1.4.4: Product: AudioHub Speaker usb 1-1.4.4: Manufacturer: HOLTEK Not much that looks like a reference to a chip, at least to my uneducated eyes. As you notice the device doubles as a USB hub. What would a chip identifier look like? > I usually setup my notebook following way > > *) Add the user to the audio(+video) group Did that. > *) create a file /etc/modprobe.d/sound with following > > ## ALSA portion > alias char-major-116 snd > alias snd-card-0 snd-hda-intel > alias snd-card-1 snd-usb-audio > > ## module options should go here > #options snd-hda-intel index=0 model=dell-m6,ref,auto > #options snd-hda-intel index=0 model=ref enable_msi=1 > options snd-hda-intel index=0 model=ref > #options snd-hda-intel index=0 model=hp-dv5 enable_msi=1 position_fix=1 > options snd-usb-audio index=1 I currently have this: $ cat /etc/modprobe.d/sound alias snd-card-0 snd-es1968 options snd-es1968 index=0 Let me check what this does before I make any changes. > This way I have always the built in card configured as "0" which means first > and the usb as second Ah.. nice. > The options you'll find in the kernel version /Documentation > > *) For user specific configuration and experimenting with alsa you can use > > $HOME/.asoundrc excellent! [..] On Mon, Dec 06, 2010 at 12:17:02PM EST, Hugo Vanwoerkom wrote: [..] > the default sound is index=0 Thanks to both! cj -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/20101206181840.ge3...@turki.gavron.org
