Hello, On Ubuntu 13.10 (fresh install not upgrade) I observed that subwoofer yielded no sound. So I tested two fixes separately, changes from vanilla configuration are indicated with "-->".
1. Post #8: Setting the pin configuration default to 0x99130112 for pin 0x16 --> Subwoofer plays sound, high frequencies included --> Muting right channel at source mutes subwoofer, muting left channel at source does not affect subwoofer --> alsamixer shows a "bass" volume control that affects subwoofer --> alsamixer master volume affects all channels as expected --> interference noise in subwoofer, not very loud but clearly audible when ear close to subwoofer 2. Post #34: edit /etc/modprobe.d/alsa-base.conf and add this line: options snd-hda-intel model=asus-mode4 --> Same consequences (not tested volume details though) Interference noise in subwoofer only happens when enabling one of those fixes. Disappears immediately when doing rmmod snd-hda-intel. Close attention to this noise, revealed that some noise remains even after rmmod snd-hda-intel, but it's more subtle because more or less the same power as the PC fan noise. As expected, unplugging the subwoofer from the jack removes that noise. Keeping in mind the usual "hey it's open source, it's done when someone does it philosophy, why is this bug/feature not addressed ? Because wiring is non-standard ? Because it's difficult to implement an auto-detect + jack sense feature that just works ? Because no one really cares (IMHO sound is not that good anyway, any decent external stereo will do much better, so I consider myself in the "not really cares" option) ? Just my two cents. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/871808 Title: Asus N55SF/N75SF - External subwoofer not working To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/871808/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
