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Thread: Arrow keys unresponsive in boot menu--cannot boot back into Windows10

  1. #1
    Join Date
    Nov 2019
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    3

    Question Arrow keys unresponsive in boot menu--cannot boot back into Windows10

    Hey all.
    I am a noobish person when it comes to linux/ubuntu. I can do some basic stuff and am currently doing "The Odin Project" for web development. In order to follow along the courses, I needed to have Ubuntu. Instead of using VirtualBox, I opted to dual-boot alongside Windows 10. Have had no problems whatsoever, other than a common wifi issue for my Surface Pro 3, but I fixed it. On to the problem!

    Up until now, I havent tried to boot into windows because honestly...Boo to windows.

    *But i did try two days ago and my arrow keys will not work. They are completely unresponsive. Touch screen does not work in bootloader either (Im not sure if it is supposed to though) Basically I cannot find any way to boot back into windows. I have searched for a solution for few days and have not come up with anything yet. I have seen some issues people had which are kinda the same issue i have, though in those cases, they are using an USB keyboard. I am using Surface Pro 3, so its not an USB keyboard really...but it is technically an external keyboard i guess.

    The only things I have done so far is:
    apt-get upgrade
    apt-get update
    updated grub

    Please, if anyone has any input, it'd be much appreciated. Thanks peoples
    Stay classy

    edit: I am using Ubuntu 18.04
    Last edited by jespody; 4 Weeks Ago at 10:07 PM.

  2. #2
    Join Date
    Jan 2006
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    7,010
    Distro
    Kubuntu 18.04 Bionic Beaver

    Re: Arrow keys unresponsive in boot menu--cannot boot back into Windows10

    I don't know much about those machines, or their keyboards, but it seems unlikely that they'd bother to come up with a different protocol for the keyboard other than "USB with a different connector."

    At the point that the Grub menu is active there is extremely limited support for hardware: no operating system has been loaded. Support has to come from the BIOS/UEFI, and they generally have an option exactly for handling USB devices without an OS, called "Legacy USB Support" or something similar.

    On UEFI devices you can reboot into the UEFI setup with
    Code:
    sudo systemctl reboot --firmware-setup
    It may also be possible to use a similar command to boot into a different EFI entry, but that's not something I've ever tried to do.

  3. #3
    Join Date
    Nov 2019
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    Re: Arrow keys unresponsive in boot menu--cannot boot back into Windows10

    Thank you so much. I will try as soon as I get back on my machine. Thanks for the reply

  4. #4
    Join Date
    Nov 2019
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    Re: Arrow keys unresponsive in boot menu--cannot boot back into Windows10

    I tried this and no go. I got into the settings menu, but there was no legacy support. There was an option for an on-screen keyboard, but when i rebooted, that never showed. I have noticed a weird occurrence. I have been having general issues lately with the device. The device will get very hot, and then the device will get super slow n unresponsive to the point where I have to reset by holding the button down. When this happens, and ONLY when this happens. the keyboard works in bootloader and i can boot into windows. its bizarre. I have tried to just reset using the button without the device getting all Frackity and it doesnt work then either. I dont even know. If ya have any thoughts...let me know please. And thanks for your reply before again.,

  5. #5
    Join Date
    Jan 2006
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    Sunny Southend-on-Sea
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    7,010
    Distro
    Kubuntu 18.04 Bionic Beaver

    Re: Arrow keys unresponsive in boot menu--cannot boot back into Windows10

    For the topic of the thread, it's possible that you've got Fast Boot turned on in the BIOS, which skips a bunch of hardware detection things, and which is being bypassed by the hard reset. If it's not that, I'm out of ideas.

    For the other thing, that's thermal throttling. Something needs to control your fans for them to work. That can be the BIOS/UEFI, or it can be software. If your Windows install was setup with software to control your fans, the ability for the BIOS to control it may have been disabled. The easiest approach is to re-enable it there. Otherwise the software that you'll need is fancontrol and lm-sensors, and you'll need the sensors included on the motherboard to be addressable. The ability to read particular sensor chips and write to fan controllers has to be reverse-engineered, so some chips work and some chips don't. Further discussion of that topic should go in a different thread, though: we want one problem and solution per thread so that people who might be able to help can do so, and so that later people with the same problem will be able to find solutions.

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