Same problem here. Asus Laptop UX305fa. Half-speed sound when connected via 3.5
mm to external monitor conntected via HDMI.
For me this started happening after upgrading from 15.10 to 16.04. I can get
around the issue by rebooting my machine after connecting the external
monitor... which ofc isn't a solution, just an ugly workaround for now.
cat /proc/asound/cards
0 [HDMI ]: HDA-Intel - HDA Intel HDMI
HDA Intel HDMI at 0xf711c000 irq 50
1 [PCH ]: HDA-Intel - HDA Intel PCH
HDA Intel PCH at 0xf7118000 irq 47
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https://bugs.launchpad.net/bugs/1580882
Title:
[, Intel Broadwell HDMI, Digital Out, HDMI] Sound like half speed
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