It's really annoying as I have to unplug the mouse after a suspend to ensure that an occasional bump doesn't wake up the system. I haven't found anything in system settings which could disable this neither by googling around.
Ubuntu – How to prevent mouse movement from waking up a suspended computer
mousesuspend
Related Solutions
Here are the two common Gnome 3 ways which usually disable suspend; otherwise you can try booting with the acpi=off parameter:
Power Settings:
gnome-tweak-tool(install if necessary):
I was able to fix the problem by adding usbhid.quirks=0x04D9:0xA0CD:0x20000408 to kernel boot parameters as described here https://unix.stackexchange.com/a/280574/41667.
Best Answer
I haven't checked the BIOS yet, but I've found a solution!
Short summary: In
/proc/acpi/wakeup, you can see which devices are currently enabled to resume from suspend. That list shows names (abbreviated) of so called "Devices". Example "PWRB" means "power button".If you write device-names to that file, you toggle them between enabled/disabled.
I wrote a small HowTo for disabling wakeup-by-mouse, based on a blog where I found that info.