lurch
commented
1 month ago I notice that it usually happens when boot after some system crash or device power loss.
Perhaps when there's a system crash the CX31993 usb dongle isn't getting "shut down cleanly" and getting itself into a confused hardware-state, and so it's (incorrectly) reporting to Raspberry Pi OS that there's a microphone connected, even when there isn't?
After second system reboot the microphone icon disappears.
And perhaps this "clean shutdown" clears the faulty hardware-state inside the CX31993 ? :man_shrugging:
Sometimes microphone icon appears on taskbar at boot time when actually there is no connected microphone. I notice that it usually happens when boot after some system crash or device power loss.
After second system reboot the microphone icon disappears.
I'm using CX31993 usb dongle as a sound card. Usually it detects that microphone is connected when I insert headset with microphone into it's connector. When I use headphones with no microphone it don't detect microphone and microphone icon don't appears on taskbar.
But if some system crash or unexpected power loss is happens, at the next boot I got microphone icon on taksbar even if it don't connected. Also it shows that microphone input device is available in apps, but attempt to select it leads to empty stream, there is even no noise...