author not responded. :(

-- 
You received this bug notification because you are a member of Desktop
Packages, which is subscribed to alsa-driver in Ubuntu.
https://bugs.launchpad.net/bugs/1192458

Title:
  [USB-Audio, playback] 4-channel mode don't work on E-MU 0204 USB

Status in “alsa-driver” package in Ubuntu:
  Confirmed

Bug description:
  On E-MU 0204 USB only 2-channel  mode worked. In this mode the second
  pair of channels just duplicates the output of the first pair. E-MU
  control panel under MS Windows allow to switch to 2-channel or
  4-channel mode. I ran USB sniffer, and it shows switch commands that
  the system send to the device:

  ======================================
  Host send 2 bytes to device:
  Request:  0x1
  Value:  0x400
  Data:  01 01    //switching to 2-channel mode
  Data:  01 02    //switching to 4-channel mode
  ======================================

  Looks like in Ubuntu the card by default stay in 2-channel mode.
  Switching to 4-channel mode apparently can be added to quirks.c

  DistroRelease: Ubuntu 12.10
  Package: alsa-base 1.0.25+dfsg-0ubuntu4
  Uname: Linux 3.9.6-030906-generic x86_64
  Architecture: amd64

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1192458/+subscriptions

-- 
Mailing list: https://launchpad.net/~desktop-packages
Post to     : desktop-packages@lists.launchpad.net
Unsubscribe : https://launchpad.net/~desktop-packages
More help   : https://help.launchpad.net/ListHelp

Reply via email to