Hi Hui Wang, While waiting for your patch to reach the mainline, I just insert these two lines myself.
However, I still have issues with the sound. Scenario: laptop is off, headphones are inserted, sound (both mic and output) is muted; I turn it on, log in etc., unmute the output and play something. The sound is often too quiet (maybe 10 to 15 dB weaker than expected). If I unplug the headphones and plug them back in, the sound level rises to expected levels, but I start hearing noise reminiscent of cheap soundcards (with grounding problems?), where the noise characteristics change with the activity of other devices (e.g., mouse movements). The noise is stronger if I touch the touchpad. If I mute the sound, the noise disappears. This does not happen if I remove the "0x12" line, whether or not I add the .chained/.chain_id lines. Interestingly, init_pin_configs in sysfs shows the same value for 0x12: $ cat /sys/class/sound/hwC0D0/init_pin_configs 0x12 0x90a60130 0x13 0x40000000 0x14 0x90170110 0x16 0x411111f0 0x17 0x411111f0 0x18 0x411111f0 0x19 0x04a11040 0x1a 0x411111f0 0x1b 0x411111f0 0x1d 0x40600001 0x1e 0x411111f0 0x21 0x04211020 (driver_pin_configs and user_pin_configs are empty.) Thank you, Vadim. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1805079 Title: click/pop noise in the headphone on several lenovo laptops To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1805079/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
