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Coreboot SeaBIOS thinkpad X220: How to disable touchpad?

X200/X201/X220 (including equivalent tablet models) and X300/X301 series specific matters only.
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deeg05
Posts: 5
Joined: Sat Dec 26, 2020 1:04 am
Location: Moscow, Russia

Coreboot SeaBIOS thinkpad X220: How to disable touchpad?

#1 Post by deeg05 » Thu Dec 31, 2020 3:05 pm

Dear forum users,
I've successfully installed coreboot with seabios on my wholesome thinkpad x220 today.
When it had original/modified bios, I've choosen to disable touchpad since I don't use it plus I think that trackpoint with touchpad disabled works smoother.
So, how to do the same thing on X220?
UPD: I've chosen to just disconnect it from motherboard, but if there are any software ways, they would be still welcome :mrgreen: :D

as.nielo
Freshman Member
Posts: 58
Joined: Sat Sep 30, 2017 1:46 pm
Location: EU

Re: Coreboot SeaBIOS thinkpad X220: How to disable touchpad?

#2 Post by as.nielo » Sun Jan 03, 2021 6:00 am

I can’t check it right now, sorry. But in my build I have nvramutil payload, I can execute it before the system boots. Otherwise there is similiar command nvramtool available in coreboot package. With this one you can set the same things, like disabling the touchpad or adjusting the amount of dram allocated for intel graphics, from running system. I’m not sure if this doesn’t require iomem=relaxed kernel parameter added to bootloader command

deeg05
Posts: 5
Joined: Sat Dec 26, 2020 1:04 am
Location: Moscow, Russia

Re: Coreboot SeaBIOS thinkpad X220: How to disable touchpad?

#3 Post by deeg05 » Mon Jan 04, 2021 4:41 am

Thanks, will look into it! :banana:

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