Minimalistic approach for SQ benefits?

Discovery

This one's for HondaGX35 or ACX, probably.

The Rune system allows music input from Ethernet (my preference), wifi or USB. As I only need one of these, are there any potential sound quality benefits to be gained by disabling the other two? I particularly want to stop any un-required processes in the system so that Linux is only doing what is absolutely necessary and no more. If so, could you advise how I could do this so I can experiment?

While I'm about it, it would be good to ensure that the HDMI port is totally disabled as unused, and I would even be happy to disable the USB ports because I'm using SPDIF output from a Digi+ board.

It occurs to me internal wifi processes might be disabled by physically removing the wifi dongle - if so, please advise.

Thanks.

hondagx35

Hi Discovery,

from one of your other posts i remember that you are working on a PI2, right?

It occurs to me internal wifi processes might be disabled by physically removing the wifi dongle - if so, please advise.

Yes and no.
To be sure all processes related to wifi are stopped use:

systemctl disable netctl-auto@wlan0

After this your device will boot faster and never touches wifi until you plug in a dongle.

I particularly want to stop any un-required processes in the system so that Linux is only doing what is absolutely necessary and no more

If you do not need:
- AirPlay
- Spotify
- UPnP / DLNA
then disable them on the settings page.

Disabling HDMI can be done by:

/opt/vc/bin/tvservice -o

You also can disable time synchronisation:

systemctl disable ntpd

EDIT:If you are using NFS mounts, then do not disable ntpd.

For disabling usb i have no idea how to do this.

Frank

Aquarius

You can't disable USB and have ethernet working at the same time. The Pi is designed this way. Basically, the ehternet port is like an ethernet USB dongle. It connects to the USB bus on the Pi and shares the same ressources as the USB ports. That's the major roadblock as far as fast interfaces are concerned. All USB + Ethernet share 480Mb/s of bandwtidth.

Discovery

Thanks Frank and Aquarius. Changes implemented; back to listening.