gileswjones
Posts: 3
Joined: Wed Nov 23, 2022 9:52 am

HDMI Sound works on RPI4b but not 400

Thu Nov 24, 2022 10:00 am

I have a RPI 4b and 400 and a Risc OS 5.28 install. The 400 was working fine, sound and all. One day, the sound just stopped. Tried re-imaging and had a backup disk but to no avail. I tried changing the HDMI cable too. I just tried the same Risc OS 5.28 disk in the 4b and the sound from HDMI works fine. Anybody have any idea why it would work in one and not the other? :D

cleverca22
Posts: 6809
Joined: Sat Aug 18, 2012 2:33 pm

Re: HDMI Sound works on RPI4b but not 400

Thu Nov 24, 2022 12:39 pm

gileswjones wrote:
Thu Nov 24, 2022 10:00 am
I tried changing the HDMI cable too.
hdmi audio is sent over the same pins as video, so if your getting a picture, the table cant be the problem

have you tried both hdmi ports?

gileswjones
Posts: 3
Joined: Wed Nov 23, 2022 9:52 am

Re: HDMI Sound works on RPI4b but not 400

Thu Nov 24, 2022 11:19 pm

Hi,
Thank you for your reply.
I have but I believe only the first port with Risc OS works with Audio. I actually tried Raspberry OS and the sound works with both computers. It makes very little sense to me why Risc OS is choosing not to work on the 400 :/

gileswjones
Posts: 3
Joined: Wed Nov 23, 2022 9:52 am

Re: HDMI Sound works on RPI4b but not 400

Thu Nov 24, 2022 11:21 pm

I tried in the second socket again...the one furthest away from the power supply which isn't supposed to work with RiscOS HDMI audio. It worked! Thank you so much for prompting me to try that again!

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