How to disable any keyboard/mouse input in GRUB?
 

I've found that my USB mouse causes some I/O bug BIOS, but in operation system it works fine. Problem is freezing GRUB caused by fake input from the mouse. Possible decision is disabling any input for grub, but I don't know how to do it.

Sorry for my English.

I may be wrong, but I think you need to jump hoops to get GRUB to recognise your mouse (Wikipedia implies you can, I've never seen it done)

So unless you can normally use the mouse in your GRUB setup, I feel it's unlikely that changing anything to do with GRUB will fix this problem. And when you said "possible solution is disabling any input for grub", I assume you mean just mouse input? Or am I missing something here?

Wonder if an bios setting for legacy usb or other such entry might help? Anything in bios that would suggest something like that?

No, I don't need GRUB boot menu at all. But my USB mouse causes hang up on this menu. Now I must unplug them until OS booted.

BIOS recognize this mouse as keyboard and sets them "primary" status. So, real keyboard is inactive either in GRUB menu and BIOS setup menus. Mouse actions are recognized as some key pressings, so, GRUB shows menu instead of loading OS immediately. I want GRUB to ignore this inputs.

It's a BIOS problem, but BIOS settings of my computer don't provide any USB rules.

You can try LILO instead of GRUB

Maybe if you set the grub timeout to 0 that would be an effective workaround. Maybe.

Menu timeout is currently 0. But pseudo-keyboard input calls them. LILO's behavior is same, so it will not solve this problem.