https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1316305
do you mean surround21 not yet available in Ubuntu 14.04 LTS ? Profili: input:analog-stereo: Stereo analogico input (sinks: 0, sources: 1, priority. 60) output:analog-stereo: Stereo analogico output (sinks: 1, sources: 0, priority. 6000) output:analog-stereo+input:analog-stereo: Duplex stereo analogico (sinks: 1, sources: 1, priority. 6060) output:analog-surround-40: Surround analogico 4.0 output (sinks: 1, sources: 0, priority. 700) output:analog-surround-40+input:analog-stereo: Surround analogico 4.0 output + Stereo analogico input (sinks: 1, sources: 1, priority. 760) output:analog-surround-21: Surround analogico 2.1 output (sinks: 1, sources: 0, priority. 800) output:analog-surround-21+input:analog-stereo: Surround analogico 2.1 output + Stereo analogico input (sinks: 1, sources: 1, priority. 860) off: Spento (sinks: 0, sources: 0, priority. 0) Profilo attivo: output:analog-surround-21+input:analog-stereo http://www.maxx.com/asus/ refer to those user guides, look like bass is done by software instead of hardware as user can specify cutoff frequency -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to alsa-lib in Ubuntu. https://bugs.launchpad.net/bugs/1286021 Title: 2.1 surround support (userspace) Status in “alsa-lib” package in Ubuntu: Fix Committed Status in “pulseaudio” package in Ubuntu: In Progress Bug description: 2.1 surround should work as seamlessly as other surround options, such as 4.0, 5.1 and 7.1 work today. Alsa-lib and pulseaudio patches for 14.04 can be tested here: https://launchpad.net/~diwic/+archive/surround21 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-lib/+bug/1286021/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp