Am brand-new user of Ubuntu. A month ago, more or less, my excellent stepson installed Ubuntu on a wiped Lenovo Flex 6-11IGM computer, and it worked flawlessly in all regards. Not yet savvy enough to know the version, but the screen displays the "Bionic Beaver" background.
A couple of days ago, I get an update message, telling me of updates to the Ubuntu software...quite extensive list. I gave permission.
Post-install, I powered off the Lenovo and then re-started, per instructions on the screen.
Now, the touch pad does not respond reliably, if at all. The touch screen does not respond reliably, if at all. I turn off the computer and then turn it back on...and a different condition will obtain. Maybe nothing will respond and I can only shut down again. Maybe the touch pad will respond for a few seconds, or a few minutes and then go dumb. Perhaps only the touch screen capability will respond for a moment, or a few minutes, and then go dumb.
In one session I was able to see that the version was 18.04LTS and the Gnome was 3.28.2
My Linux ignorance is complete.
@Elder Geek, I could not get the Grub menu by holding the shift key while booting. I tried twice - once with the left shift key, then booting with the right shift key. Neither way worked. Maybe I should change my name to Noah Vale.
@Elder Geek, I tried another approach from the link you gave, and it looks interesting, I guess, but now I need to learn how to understand what it presents. This morning I did manage to use the computer in question, long enough to download/install version 18.04.1LTS, but still having problems with the touch pad and touch screen, as originally described.
tom@LENOVO-LAPTOP:~$ gksudo gedit /etc/default/grub
Command 'gksudo' not found, did you mean:
command 'gfsudo' from deb gfarm-client
Try: sudo apt install
tom@LENOVO-LAPTOP:~$ sudo update-grub
[sudo] password for tom:
Generating grub configuration file ...
Found linux image: /boot/vmlinuz-4.15.0-29-generic
Found initrd image: /boot/initrd.img-4.15.0-29-generic
Found linux image: /boot/vmlinuz-4.15.0-22-generic
Found initrd image: /boot/initrd.img-4.15.0-22-generic
Found linux image: /boot/vmlinuz-4.15.0-20-generic
Found initrd image: /boot/initrd.img-4.15.0-20-generic
Adding boot menu entry for EFI firmware configuration
so, this is what I got, but it means nothing to me, yet. Is there something here, that will help with my problem? How do I learn?