Comment 90 for bug 1958191

Thanks, my problem is that I cannot reliably edit the grub file because the flickering is continuous. Literally, I cannot get more than half a second to read what I'm typing. Using my mouse doesn't appear to affect it at all. I tried to edit the first two parameters, but running sudo update-grub returns an error so must have made a typo somewhere but as I said.. impossible to 1) read what exactly errors and 2) read the contents of the grub file due to the flickering. Is there a command that would wipe the grub file to default so I can try again?

The only time the display doesn't flicker is when I need to enter my encryption password. After unencrypting, it starts flickering even before I log into user.