So the 5460 (PCI SSID 1028:05da) and the 5470 is actually slightly different. Both 5460 and 5470 suffer from the mono DAC node at 0x03 problem. The difference is that the 5470 needs the headset mode patch set as well, whereas 5460 has independent detection for headphone and mic (i e, can distinguish a headset from a headphone).
For the surround 2.1 mode to show up in PulseAudio you also need to add this section to the relevant file: [Mapping analog-surround-21] device-strings = surround21:%f surround40:%f channel-map = front-left,front-right,lfe,lfe paths-output = analog-output analog-output-lineout analog-output-speaker analog-output-desktop-speaker priority = 8 direction = output -- 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/1211920 Title: Low audio output / missing subwoofer on Vostro 5460/5470 (with Ubuntu pre-loaded) Status in “alsa-driver” package in Ubuntu: Triaged Bug description: I have been using a Dell Vostro 5460 for a while. It came pre-loaded with Ubuntu 12.04. Also, I could find some customizations in the same. And there's an issue of low audio output that I am facing. I have been using the 12.10 and 13.04 versions currently and the issue affects them too. Also, reportedly Windows users are facing no such issues. Some discussion regarding the same can be found at: http://ubuntuforums.org/showthread.php?t=2152776 http://ubuntuforums.org/showthread.php?t=2159407 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1211920/+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
