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-   -   One HDMI falls-back to analog, the other doesn't; none produce audio in TV (https://www.linuxquestions.org/questions/linux-hardware-18/one-hdmi-falls-back-to-analog-the-other-doesnt%3B-none-produce-audio-in-tv-920405/)

Geremia 12-24-2011 09:02 PM
One HDMI falls-back to analog, the other doesn't; none produce audio in TV
 
I have a fallback to analog (internal) sound issue whenever I select one of my HDMI devices but there is no fallback to the analog ALC272 device whenever I choose the other, nor is there any audio coming from the TV to which I am connected via HDMI. My "aplay -l" is:
Code:
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC272 Analog [ALC272 Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: Intel [HDA Intel], device 3: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: Intel [HDA Intel], device 7: HDMI 1 [HDMI 1]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

business_kid 12-25-2011 02:05 PM
ls -l /dev/dsp* might be interesting.

They should be lined up as dsp0 dsp1, & dsp2 and summed at /dev/dsp. Some distros take shoprtcuts, especially if you fitted something after installing.

Geremia 12-26-2011 01:16 AM
Quote:
Originally Posted by business_kid (Post 4558134)
ls -l /dev/dsp* might be interesting.
Not too interesting:
Code:
crw-rw----+ 1 root audio 14, 3 dic 25 16:52 /dev/dsp
I ran it without the HDMI connected from my laptop to the TV. Thanks

business_kid 12-26-2011 03:17 AM
Well, it's only seeing one soundcard. .
Quote:
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC272 Analog [ALC272 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: Intel [HDA Intel], device 3: HDMI 0 [HDMI 0]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 0: Intel [HDA Intel], device 7: HDMI 1 [HDMI 1]
Subdevices: 1/1
Subdevice #0: subdevice #0
Wait a second, I'm asleep. They all are card 0. So you have ONE soundcardn and it's working. Multiple devices usually exist on a soundcard - blaster, opl3, synth, game port, etc. It's showing 2 hdmi ports. Check volumes and mutes in alsamixer.

Geremia 12-27-2011 12:14 AM
HDMI doesn't appear in alsamixer
 
Quote:
Originally Posted by business_kid (Post 4558436)
Check volumes and mutes in alsamixer.
That could be the problem. The two HDMI ports do not show in alsamixer even when I have my HDMI cable connecting my laptop to the TV. Thanks

Geremia 12-27-2011 12:20 AM
Another poster here suggested that I add
Code:
options snd-hda-intel probe_mask=0xfff2
to '/etc/modprobe.d/sound.conf', and it seemed to make HDMI show in alsamixer now.

business_kid 12-27-2011 03:16 AM
Sound, to me is still a bit of 'tweak and poke and hope it comes alive' If someone has aq good idea, try it. HDA Intel also needs a codec, and I would google setting up hdmi devices.


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