I have the same exact problem with my Lenovo G560 initially installed UBUNTU 10.04 with alsa 1.0.21 and due to some problems like headphones are not muting the sound from the speakers i upgraded to alsa 1.0.24 after that i had the same problem:
((before upgrade)) mute hotkey is dark ==> the sound is working mute hotkey is lighting ==> the sound is muted ((after upgrade)) mute hotkey is dark ==> the sound is muted mute hotkey is lighting ==> the sound is working --by the way -- i re-installed ubuntu 10.04 again and it was working fine only with alsa 1.0.21 .... i upgraded again but to alsa 1.0.23 and it make the same problem Problem: alsa 1.0.21 <==> not existing alsa 1.0.23 <==> existing alsa 1.024 <==> existing -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/661952 Title: lenovo g460 [HDA-Intel - HDA Intel] mute softkey incorrect status -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs