Raspberry Pi - keyboard problem

50Twuncle

I have tried to unmute amixer by inputting "amixer sset Master unmute"

Which produces
amixer: Unable to find simple control 'Master',0

DoaM

50Twuncle said:

I have tried to unmute amixer by inputting "amixer sset Master unmute"

Which produces
amixer: Unable to find simple control 'Master',0

I know nothing about Pi (other than it is 3.142......) - is the ss intentional?

thorganby

There is a known problem with EDID that can cause the Pi to think that the HDMI device is DVI - video only with no audio.

EDID info https://en.wikipedia.org/wiki/Extended_Display_Identification_Data

Add the following line to config.txt

hdmi_ignore_edid=0xa5000080

Then reboot.

50Twuncle

DoaM said:

50Twuncle said:

I have tried to unmute amixer by inputting "amixer sset Master unmute"

Which produces
amixer: Unable to find simple control 'Master',0

I know nothing about Pi (other than it is 3.142......) - is the ss intentional?

Yes SSET is correct

50Twuncle

thorganby said:

There is a known problem with EDID that can cause the Pi to think that the HDMI device is DVI - video only with no audio.

EDID info https://en.wikipedia.org/wiki/Extended_Display_Identification_Data

Add the following line to config.txt

hdmi_ignore_edid=0xa5000080

Then reboot.

Thanks I will give that a try tomorrow

50Twuncle

thorganby said:

There is a known problem with EDID that can cause the Pi to think that the HDMI device is DVI - video only with no audio.

EDID info https://en.wikipedia.org/wiki/Extended_Display_Identification_Data

Add the following line to config.txt

hdmi_ignore_edid=0xa5000080

Then reboot.

Added line to config.txt 
Still no audio from the HDMI TV !

debitcardmayhem

You could try this (I only have a 3b and mine works fine without this)

HDMI audio should work in both ports, but there may be some config you can do to make it better.

Add this to the end of the line in cmdline.txt file in /boot (all must be on the same line)

snd_bcm2835.enable_headphones=1 snd_bcm2835.enable_hdmi=1 snd_bcm2835.enable_compat_alsa=0

50Twuncle

There IS a known HW fault - the company that I bought it from have told me that they are sending me a replacement (upgraded to an 8Gb model and they don't want the old one back)
How's that for customer service ?

thorganby

50Twuncle said:

There IS a known HW fault - the company that I bought it from have told me that they are sending me a replacement (upgraded to an 8Gb model and they don't want the old one back)
How's that for customer service ?

I find it very hard to believe that this is a hardware fault!

Are you running this Pi 4 kit straight out of the box.

Most Pi users download the latest firmware and burn their own micro SD card, your kit could be months out of date!

You should have checked that you have the latest Raspbian and kernel updates, have you?

sudo apt-get update && sudo apt-get upgrade

Have you ever invoked this command?

Do update this thread when you have the replacement.

50Twuncle

thorganby said:

50Twuncle said:

There IS a known HW fault - the company that I bought it from have told me that they are sending me a replacement (upgraded to an 8Gb model and they don't want the old one back)
How's that for customer service ?

I find it very hard to believe that this is a hardware fault!

Are you running this Pi 4 kit straight out of the box.

Most Pi users download the latest firmware and burn their own micro SD card, your kit could be months out of date!

You should have checked that you have the latest Raspbian and kernel updates, have you?

sudo apt-get update && sudo apt-get upgrade

Have you ever invoked this command?

Do update this thread when you have the replacement.

Yes - I was running the latest version and yes I updated it !!

I will update the thread when I get the replacement Pi.......