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List:       grub-devel
Subject:    Re: Mouse support for just the wheel and left button.
From:       John Murphy <swl () freeode ! co ! uk>
Date:       2015-12-17 17:03:58
Message-ID: 20151217170358.4483481a () z68
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On Thu, 17 Dec 2015 11:03:41 -0500, Lennart Sorensen wrote:

> On Thu, Dec 17, 2015 at 01:34:10PM +0000, John Murphy wrote:
> > I'm able to scroll through entries on pages in my BIOS using the wheel
> > (Asus Maximus VII Formula). Not sure if that means anything.
> 
> That probably doesn't mean anything.  The firmware can choose to handle
> the mouse in any way it wants, but the interface actually provided to
> the boot loader through EFI is more limited.
> 
> The UEFI spec mentions x, y and z axis for a pointing device and
> recommends using z-axis for scrolling, but I don't know if the mouse wheel
> would be used as a z-axis, or just button 4 and 5 (which uefi doesn't do,
> only left and right).
 
If 'standards' have carried through from xorg.conf / mousedrv, buttons 4
and 5 would be wheel buttons. Button 4 is the default for "which button
must be held down to enable wheel emulation mode." (man mousedrv) but again
- may not mean anything.

-- 


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