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Re: the rootcause of the grub2 that can support USB keyboard
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From: |
Brendan Trotter |
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Subject: |
Re: the rootcause of the grub2 that can support USB keyboard |
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Date: |
Wed, 22 Aug 2018 13:46:46 +0930 |
Hi,
On 8/21/18, Sherry Zhang(BJ-RD) <address@hidden> wrote:
> But I have found the USB keyboard module-usb_keyboard.mod that I don't load
> ,
> So why the usb keyboard can be used when I don't load usb modules?
A better question is, why does "module-usb_keyboard.mod" exist in the
first place? In theory, GRUB should be able to use whatever the
firmware provides to access key presses and shouldn't need a module at
all.
However, there were a few incredibly dodgy computers (mostly "late
1990s" time frame?) where the firmware expects a PS/2 keyboard and
firmware's keyboard support doesn't work with a USB keyboard. GRUB
probably provides a "module-usb_keyboard.mod" so that USB keyboards
will work properly on these incredibly dodgy computers.
Note: I'm not a GRUB developer or anything, I just know how much
computers can suck. ;-)
- Brendan