I think I have the same issue on a Lenovo ThinkPad X230. Turning off "Auto-Mute" DOES NOT solve the problem in any way for me. I haven't tried the DKMS method or the new kernel. I will do that as soon as possible and report back.
Since I'm not sure whether we have the same hardware configuration (and therefore experiencing the same bug), here is some infor about my configuration: hossein@hossein-ThinkPad-X230:~$ cat /proc/asound/card0/codec#* | grep Codec Codec: Realtek ALC269VC Codec: Intel PantherPoint HDMI hossein@hossein-ThinkPad-X230:~$ aplay -l **** List of PLAYBACK Hardware Devices **** card 0: PCH [HDA Intel PCH], device 0: ALC269VC Analog [ALC269VC Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: PCH [HDA Intel PCH], device 3: HDMI 0 [HDMI 0] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: PCH [HDA Intel PCH], device 7: HDMI 1 [HDMI 1] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: PCH [HDA Intel PCH], device 8: HDMI 2 [HDMI 2] Subdevices: 1/1 Subdevice #0: subdevice #0 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1064621 Title: Internal speaker muted after a while, several Realtek codecs (Quantal) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1064621/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
