Arch Linux

brittanderson

Member

Registered: 2010-09-16

Posts: 34

[solved] HDMI audio only through laptop speakers

I am running archlinux on an original surface pro with alsa. All sound works fine except that with an hdmi cable plugged in the audio still routes through the surface speakers and never through the tv or lcd projector. I have googled a plenty, but not found a fix. Any advice for what I should be trying would be appreciated.
Here is what aplay -L shows

britt@superman ~ $ aplay -L
null
    Discard all samples (playback) or generate zero samples (capture)
sysdefault:CARD=PCH
    HDA Intel PCH, ALC280 Analog
    Default Audio Device
front:CARD=PCH,DEV=0
    HDA Intel PCH, ALC280 Analog
    Front speakers
surround21:CARD=PCH,DEV=0
    HDA Intel PCH, ALC280 Analog
    2.1 Surround output to Front and Subwoofer speakers
surround40:CARD=PCH,DEV=0
    HDA Intel PCH, ALC280 Analog
    4.0 Surround output to Front and Rear speakers
surround41:CARD=PCH,DEV=0
    HDA Intel PCH, ALC280 Analog
    4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=PCH,DEV=0
    HDA Intel PCH, ALC280 Analog
    5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=PCH,DEV=0
    HDA Intel PCH, ALC280 Analog
    5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=PCH,DEV=0
    HDA Intel PCH, ALC280 Analog
    7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
hdmi:CARD=PCH,DEV=0
    HDA Intel PCH, HDMI 0
    HDMI Audio Output

I notice the front and HDMI card,device specification seems to be the same.

Thanks in advance, Britt

Last edited by brittanderson (2015-01-09 21:33:04)

brittanderson

Member

Registered: 2010-09-16

Posts: 34

Re: [solved] HDMI audio only through laptop speakers

Finally found the right page. My problem was solved by editing ~/.asoundrc as described here:
https://wiki.archlinux.org/index.php/Ad … s_not_work