On initial installation of the 8KX the volume was acceptable.
A while ago I reported that the audio on the built-in speakers had got “stuck” at a very low level, despite Windows and any in-app audio controls reporting the volume to be at 100%. In that case rebooting the HMD from PiTool seemed to fix it, and I thought (wrongly, perhaps) that this indicated a hardware/firmware problem.
It has happened again, and this time rebooting (plus a complete power down overnight) has not restored the audio to a usable level. It’s not completely off - if I cup my hands over my ears I can just about hear that there is something there.
In attempting to troubleshoot I have noticed a couple of things:
If I switch from “USB Audio” to my normal audio output, either using SteamVR settings or opening the Windows audio icon at the bottom right of the desktop, I can use standard headphones or over-the-ear buds in VR apps, so I have a workaround.
This is strange though. If I start up the HMD and allow Windows to switch output to USB Audio as it normally does, I can play non-VR audio sources (eg an MP3) through the HMD speakers at normal volume! So it is only apps that rely on SteamVR/PiTool that have the issue.
I have tried adjusting volume in Windows, in apps, in SteamVR, and on the HMD.
I have tried rebooting the HMD from PiTool.
I have tried restarting the service from PiTool.
I tried reinstalling PiTool 1.0.2.084.
I tried reverting to PiTool 18.104.22.1681.
I tried editing steamvr.settings to remove everything in the “audio” section.
I tried manually selecting USB Audio in SteamVR settings and then setting “volume equalisation” for that driver in Windows settings.
I tried renaming steamvr.vrsettings so that it would create a new one.
Now I’m starting to run out of ideas - any suggestions would be most welcome.