system can't detect external microphone with the codec alc274

[Hui Wang]

After installing the latest artful kernel (Ubuntu-4.13.0-16.19), and boot up the system with this kernel, we plug a headset to the headset jack, then open the gnome-sound-setting, but we can not see the headset microphone in it, there is only one internal microphone in it, as a result we can't record the sound with the headset microphone.

This Dell machine has audio codec alc274, it needs to apply a fixup like ALC269_FIXUP_DELL1_MIC_NO_PRESENCE.

After applying this fixup in the kernel driver, the headset mic can be detected and works fine.

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:

apport-collect 1731822

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

[Timo Aaltonen (tjaalton)]

fixed in -1009