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I have installed Mint linuxmint-22.1-xfce-64bit onto Toshiba Portege Z10t Detachable Ultrabook. After making one change (detailed below) the keyboard does not work when it gets to GRUB. I have tried 3 other wired keyboards and a wireless one. The touch screen and/or styles also don't work. Detaching the screen and connecting keyboards also doesn't work. The only button that does work is the Windows button on the screen itself. It only selects whatever is highlighted.

I wanted to remove Mint and install Tiny11. When I tried to boot from the Tiny11 USB I got an error from Rufus:

It can boot in UEFI mode only but you are trying to boot it in BIOS/Legacy mode.

I went into Bios and disables Legacy mode. As soon as I did that, I could not get into BIOS. At this point I did not see GRUB. I opened Terminal and typed in the following to get GRUB. sudo nano /etc/default/grub and made these changes:

GRUB_DEFAULT=1
GRUB_TIEMOUT_STYLE=menu
GRUB_TIMEOUT = 120

Then updated grub Doing this allowed me to actually see grub and try out different keyboards.

I also tried to reboot into bios directly using:

systemctl reboot --firmware-setup

But I get an error saying

Cannot indicate to EFI to boot into setup mode: Firmware does not support boot into firmware

I ran ps --no-headers -o comm 1 and got back systemd which I think means I should be able to boot into BIOS?

At this stage I don't know what else to do, I'm very new to Linux. Is there away to get the computer to see the keyboard during loading? Or is there another way to remove the OS?

Thank you

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    Can you clarify what the current situation is? It sounds like they keyboard is no longer an issue, is that right? Also, your hardware seems like it's one of those weird hybrid things, is it even supported by Linux distributions? Commented Sep 18 at 12:23
  • The keyboard(s) work fine once I log into Mint. It's only at the point when the computer starts up. It seems like it does not recognise the keyboard until it passes GRUP stage. I power up the laptop>>hit F12 (or F2) >> Nothing happens. It moves onto GRUB >> I press UP/DOWN arrows >> Nothing happens. Only once the timer runs out, whatever is highlighted is selected and I get into main OS where everything works fine. Commented Sep 18 at 12:32
  • Are you saying that the keyboard works fine in BIOS Legacy mode (because the kb is attached to a USB NOT* a PS/2 keyboard port) but stops working when you switch BIOS from Legacy mode? Commented Sep 18 at 13:13
  • When Legacy mode was enabled, I was able to get into BIOS at boot-up. Once I disabled Legacy mode from the BIOS menu, I could not get back into BIOS anymore. When it boots up and I press the F12 key, nothing happens, it gets to the Toshiba logo then straight into GRUB. The PS/2 port is the 6pin connector, the old style? I don't have that. There is the keyboard that is part of the laptop and I also tried external keyboards. Commented Sep 18 at 13:19
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    GRUB_TIEMOUT_STYLE is a typo (the E should come after the M) - is that in your /etc/default/grub, or a copy-paste error only here in your question? Commented Sep 18 at 13:39

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