After recent update of Ubuntu the problem seems to be solved. 2.6.22-9-generic (package version 2.6.22-9.25) alsa-base 1.0.14 (package version 1.0.14.1ubuntu1)
File ' /etc/modprobe.d/alsa-base' contains the following line: options snd-hda-intel model=lenovo How it's working now: * Muting 'front' channel mutes the speakers * Changing 'front' level (volume) with volume weel un-mutes the speakers * Plugging headphones into the front jack mutes the speakers * Unplugging the headphones un-mutes the speakers * Checking 'headphones' mixer option actually gives sound to the front jack Mic, front mic, mic boosts also work as intended. -- Laptop speakers not muted when plugging in headphones https://bugs.launchpad.net/bugs/94566 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs