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Try plugging in a "real" keyboard, and see if that works. If it does, it may be the cable connecting the lappie K/B has "slipped", but it's worth turning it off removing the battery, and seeing if it improves.
The latest version 1803 if working fine for me on tablet and desktop.
Bad command or file name. Bad, bad command! Sit! Stay! Staaaay...
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If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about?
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I have been living with something similar; is your rig an HP? I have a few keys that haven't worked in a while in normal Windows, but they seemed to work fine in Google Earth. I probably should have tried it in Linux, but because Windows 10 comes with the keypad at the bottom, I've learned to live with it, and it has slipped my mind since then. Now that I have a new rig, I'm going to completely reformat & reinstall Windows on this old rig, so maybe I'll get a definitive answer that something screwy was going on.
I'd like to have a small partition to have Linux/Ubuntu, and boot to that whenever I would like, but I am a bit afraid that it might somehow screw up the rest of the system - in which case I don't want to take the risk.
I installed Ubuntu on my Windows pc without any problems. Make sure you create a free disk partition in Windows where Ubuntu will be loaded. You may also need to alter the grub settings so that Ubuntu is not started by default on boot.
Works like a charm for me. This laptop, not only do I have dual boot Ubuntu / Win10, but each OS can access the other's partitions. No need to duplicate files...
To make that work smoothly you need two things: ext2fsd so Windows can see your Ubuntu partitions, and you need to turn OFF "fast boot" or whatever it's called in Win10. This is necessary for Win10 to properly close its partitions at shutdown, so they are not flagged as "unclean" when Ubuntu want to mount them.
Another thing that makes life easier - set GRUB_DEFAULT=saved and GRUB_SAVEDEFAULT=true (in /etc/default/grub)
That means all those involuntary reboots won't get hung up on the wrong side of the fence.
 added GRUB_SAVEDEFAULT=true [/edit]
Software rusts. Simon Stephenson, ca 1994. So does this signature. me, 2012
I tried dual boot and at one point hit an issue where the MBR got corrupted.
It took me a bit of sweating and work to fix it(not too much work more sweating and a fair amount of swearing too) and after googling more on the issue I decided to use Virtualbox instead which suited my needs.
After my experience with the MBR corruption I would not use dual boot again largely because a VM is so much safer.
“That which can be asserted without evidence, can be dismissed without evidence.”
Likely windows has used up the whole disk so you will need to shrink the partition to make space. Windows disk manager can do this, and being from & within windows it's safe. (Third party products can do this too often aloowing better shrinkage, but more risky.)
Do this before running the ubuntu installer.
The ubuntu installer should handle setting up the dual boot (not used ubuntu myself but others do this).
If starting from scratch always install windows first. Most linuxes will set up dual boot if it sees a windows bootable partition, whereas windows won't do it for linux and in some cases may even wipe that 'other' partition's record. (But windows will do dual boot for other windows, what a surprise - they can do it but choose not to when it's not windows.)
Signature ready for installation. Please Reboot now.