USB mouse fails to work.
I'm running a USB/PS2 mouse. It only works on PS2 port. If plugged on USB ports it can't be detected at boot. The mouse has no problem. It works on another Linux on USB port.
The USB ports on this PC also work without problem, 4 on motherboard and 2, as extended, connected to the front-side of the case. USB stick/thumb drive work on all ports. It can be mounted and its content can be read.
Please advise how to check and rectify this problem. TIA
I think the problem is a usb mouse entry in /etc/hotplug/blacklist or similar.