I've compared the schematics of w230st and w230ss from the service manuals and the codec is exactly the same, but the w230ss has an additional chip between the codec and the headphone jack. The manual says that it's an pre-amp but doesn't mention the exact model. The pre- amp is connected to the SMBus, I guess it needs initialization after standby.
The service manual also has photos of the motherboard, unfortunately they are low-res and it's not possible to identify the chip. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1313904 Title: [W230SS, VIA VT1802, Green Headphone Out, Front] No sound after fresh boot To manage notifications about this bug go to: https://bugs.launchpad.net/alsa-driver/+bug/1313904/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs