[linux-audio-user] ALSA issues
clemens at ladisch.de
Thu Nov 17 02:16:45 EST 2005
Christoph Eckert wrote:
> I'm running a Gentoo box and just updated to a vanilla 188.8.131.52 with no
> further patches applied. I even updated ALSA to 1.0.10rc1. I'm using
> the kernel drivers, no external drivers installed. JACK was taken from
> CVS some time ago and is version 0.100.0, tmpdir /dev/shm installed.
> I run an internal AC '97 chip (with modem functionality), a Terratec USB
> audio device, a Midisport 8x8, a m-audio Trigger Finger USB-MIDI device
> and (occasionally) an Edirol UM-1S. The firmware for the Midisport gets
> loaded via hotplug (very cool script BTW, thanks to the author) as well
> as snd_usb_audio gets loaded by hotplug.
> Now the issues:
> I.) According to http://alsa.opensrc.org/MultipleCards I tried to set
> the cards to a certain order because I'd (mainly) to see the Terratec
> card with the same number each time I log in. Unfortunately this
> doesn't work. I have included the content of the
> file /etc/modules.d/alsa at the end of this mail.
The "options snd-xxx index=..." lines look OK.
Please check in /sys/module/snd-xxx/parameters/index that the options actually
> II.) When doing an /etc/init.d/alsasound restart, all cards are lost.
> cat /proc/asound/cards tell me "no cards". I get back my USB devices as
> soon as I replug them thanks to hotplug, but the internal card is lost
> until I reload the modules manually *or* reboot the machine.
How does the alsasound script look like?
I guess it looks for snd-card-x aliases in /etc/modprobe.conf, and your first
problem may indicate that this file doesn't exist.
> III.) Formerly I did loadthe snd_usb_audio module
> in /etc/conf.d/local.start so I could pass some parameters to improve
> USB audio latency:
> modprobe snd-usb-audio nrpacks=1
> What is the right place now as the module gets loaded via hotplug?
/etc/modules.d/alsa :-) or wherever your distribution wants to have the
"options" lines for modules.
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