Keyboard not working anymore on BIOS after OS Type change in Chipset setup (v4)

Keyboard not working anymore on BIOS after OS Type change in Chipset setup (v4)

TechTablets Forums Jumper Discussion EZBook series Keyboard not working anymore on BIOS after OS Type change in Chipset setup (v4)

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    marioXD
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    Hi,

    after install linux as second OS on my Jumper EzBook 3 PRO (v4), i’ve switched OS TYPE in CHIPSET SETTINGS to LINUX and after reboot grub start working, but i don’t have access to BIOS anymore and boot screen is dimmed out (minimum brightness).

    I can’t enter setup by pressing esc or del. Keyboard not working during boot and also in GRUB. I have access to linux and i’ve tried to reboot to BIOS by command :
    systemctl reboot --firmware-setup and it works, bu still i can’t use keyboard and reset BIOS settings 🙁

    Any idea how to deal with it ?

    I’m thinking to clear NVRAM by dd, but i’m not what will happened ?

    modprobe nvram
    dd if=/dev/zero of=/dev/nvram

    maybe someone tried this method before ?

     

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