On page 85 of p180hm_svc_manual.pdf , there is a diagram that shows how the subwoofer and center-speaker are wired up. ALC892 pin 43&44 aka 'port G' is hooked into the PI5A3158, and from there into the TPA2008 amp... http://www.pericom.com/products/signal-switch-ic-multiplexers/?part=PI5A3158 Dual single-pole dual-throw mux/de-mux switch.... The wire controlling the PI5A3158 is called 'DOLBY_SEL'
The control-signal is emitted by the IT8519 chip, on pg90 of the pdf, which is the keyb/smbus/lpc/gpio/uart/rtc/adc/dac/etc chip. There is a similar PI5A3158 chip used to wire up the surround-out-left and surround-out-right speakers, aka rearLeft/rearRight. And the control wire has the same label... so maybe we are already properly controlling DOLBY_SEL for rearLeft/rearRight, since those seem to work fine, and we therefore just need to apply the same sort of control when trying to activate frontCenter/subwoofer? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1236965 Title: pulseaudio does not recognize internal speakers [P180HMx, Realtek ALC892, Speaker, Internal] volume slider problem To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1236965/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
