Thank you for your advice, Christopher M. Penalver. I have tried kernel version 3.6.2-030602.201210121823 (amd64) from http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.6.2-quantal/ running on Ubuntu 12.10. Version 3.7-rc1 from http://kernel.ubuntu.com/~kernel- ppa/mainline/v3.7-rc1-quantal/ is not installable for me because of the missing *_all.deb package.
The bug still persists in the 3.6.2 kernel - I can only choose Analog 4.0 Surround Output from the system sound menu in the top panel (front center and LFE speakers are not recognized). I will run apport-collect once I uninstall the upstream kernel as it needs the one from quantal repository. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/839800 Title: 5.1 built-in surround detected as 4.0 on Acer Aspire 8943G with ALC670 To manage notifications about this bug go to: https://bugs.launchpad.net/alsa-driver/+bug/839800/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs