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I'm trying to install Ubuntu 18.04.1 desktop edition on my lenovo ideapad z500 laptop and i'm facing graphical issues. After the grub menu during live USB boot, the image on the monitor shrinks vertically 1/3 of the screen height and the text isn't readable. I've read other posts about Ubuntu graphical issues and haven't found a solution to my problem.

I've tried using nomodeset kernel parameter alongside with other i915 and nouveau parameters variations and it didn't help. Also i've tried setting gfxpayload to text that gave no effect either.

Could anyone please help to resolve this issue? Or at least clarify if it is possible to boot live Ubuntu 18.04.1 kernel in pure text mode without gfx?

P.S. Using Ctrl+Alt+F2 i can see TTY changing but it doesn't do any changes to the graphics.

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ctrl-alt-f2 changes to a tty in text mode. If you still cannot see anything its more complicated

First check which graphics card you have (there are 5 different ones possible on the z500) then check your native (and other)video resolutions.

Try the gfxmode setting (you can put a comma separated list there also) e.g.:

set gfxmode=640x480,auto

details here https://www.gnu.org/software/grub/manual/grub/html_node/gfxmode.html

this tells you how to make it permanent: https://ubuntuforums.org/showthread.php?t=1794722

sudo nano /etc/default/grub

set this variable to the desired value

GRUB_GFXMODE="800x600"

then do

sudo update-grub
  • Thank you for the comment, but i believe the text mode refers to VGA text mode and Crtl+Alt+f2 doesn't change the gfx mode to text, it just shows the tty console in gfx mode. I've tried different resolutions and since it doesn't help i decided to switch to Debian distribution. That worked for me. – user1469248 Jan 3 at 8:03
  • Oh yes that seems to have changed in 18.04 or even before?!? I remember the change in display resolutions from a while ago and didn't notice that the mode is not changed anymore. – U.V. Jan 8 at 10:41

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