Question

Hi,

I need to use module kmod-usb-audio, but there is no this module is lstest SDK. There is a precompiled package but for kernel version 3.18.23 (current is 3.18.44). I`ve tried to use insmod  kmod-usb-audio -f, but insmod command in that build ignores -f option. So, please answer for at least one question (it'll solve the problem)^

1. How could I downgrade with current SDK to 3.18.23 kernel to use precompiled module?

2. Where to get the sources of kmod-usb-audio and how to add them to SDK correctly to recompile it?

3. How to make insmod -f working (kernel versions difference is not big, so it may work)?

4. Can you write a link to SDK with 3.18.23 kernel?

Answer 1

Hi,

You can install the module by forcing dependencies:

opkg update
opkg install kmod-usb-audio --force-depends

The modules will appear in /lib/modules/3.18.23/. You have to move them to /lib/modules/3.18.44/:

mv /lib/modules/3.18.23/* /lib/modules/3.18.44/

Then reboot the router and check if it works. Unfortunately, I have now way of testing this. But I used this method for other modules in the past and forcing dependencies worked just fine.

Comments

It worked! Thank you!

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p.s. Of couse I've re-compiled the firmware from SDK and enabled kernel audio support. By default it was disabled.

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That's great to hear!
I obtained a USB audio adapter and tested it - works for me too. I was about to respond to this thread but it seems it all worked out. :)
Do you mind sharing what you will do with this setup? I've never heard of people using RUT955 USB for this purpose, so it interests me.

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One of the functions is voice alert system. Also I want to modify modem control script (to switch modem mode to usb soundcard too) and accept voice calls by transferring datum from one soundcard to another.

Answer 2

Hi,

Before 3.18.44 was used version 3.10.36.

Unfortunately we do not have instructions / manuals or examples how to reach such solution.