Asus X450CA laptop with a single TRRS jack. External headphones work correctly, but the external microphone does not work at all. Only the built-in microphone (that hole next to the webcam) is detected. This has been happening since 13.10 (the first Ubuntu I installed on this laptop, which was brand-new at that time).
alsamixer shows: Master, Headphone, Speaker, PCM, Mic Boost, Mic Boost, S/PDIF, Capture, Auto-Mute Mode, Digital.
Interesting that it shows two "Mic Boost" sliders, but there is no option to switch to the external microphone. The only recording device is called "Capture".
I have the same issue.
Asus X450CA laptop with a single TRRS jack. External headphones work correctly, but the external microphone does not work at all. Only the built-in microphone (that hole next to the webcam) is detected. This has been happening since 13.10 (the first Ubuntu I installed on this laptop, which was brand-new at that time).
alsamixer shows: Master, Headphone, Speaker, PCM, Mic Boost, Mic Boost, S/PDIF, Capture, Auto-Mute Mode, Digital.
Interesting that it shows two "Mic Boost" sliders, but there is no option to switch to the external microphone. The only recording device is called "Capture".
alsa-info.sh output: www.alsa- project. org/db/ ?f=3fca8420153c f1b5424b490cf0d 58f65224c27c1
http://
Kernel release: 3.19.0-16-generic
0 [PCH ]: HDA-Intel - HDA Intel PCH
HDA Intel PCH at 0xf7e10000 irq 32
00:1b.0 Audio device: Intel Corporation 7 Series/C210 Series Chipset Family High Definition Audio Controller (rev 04)
Codec: Realtek ALC270
Other bug reports from other people: /bugs.launchpad .net/ubuntu/ +source/ linux/+ bug/1366639 /bugs.launchpad .net/ubuntu/ +source/ linux/+ bug/1382642 /bugs.launchpad .net/ubuntu/ +source/ linux/+ bug/212378 /askubuntu. com/questions/ 75828/external- microphone- not-working
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