So, when I suspend my laptop, then wake it up later, my laptop does turn on, I'm able to, for example, turn up and down the volume with audio confirmation using the kepboard, but my screen remains black and doesn't show anything until after I restart my laptop.


It is the buggy nouveau driver again. That's what solved the issue for me. Edit the file /etc/default/grub (using Vi editor -- some users have not been able to save after editing in Vi and have had to use the alternate "Ex" editing mode, which substitutes sudo edit below, then Alt+:w and :x for the save and exit commands).

$ sudoedit /etc/default/grub 

Add nouveau.modeset=0 to the line that says GRUB_CMDLINE_LINUX then press CtrlO to save the file and CtrlX to leave Editor.


$ sudo update-grub

Now reboot.

  • 1
    It didn't work for me - using GTX 970 with nvidia-390 driver. – Soichi Hayashi Aug 10 '18 at 20:51
  • Seems to work for me. Using GTX1050 and nvidia driver, with Samsung 4K monitor 28 inch – Roland Aug 20 '18 at 9:57
  • Worked for me! Thanks – guitarman Mar 26 at 10:31

That seems graphics card driver problem.
Try Ctrl + Alt + F3 then Ctrl + Alt + F2 (might be F7) this might turn on display.
But it's temporary solution.

You may want to persistent solution then you can try to upgrade or change your graphics driver or try @cascagrossa's grub settings solution.

  • 1
    This solutions works for my setup. 2 monitors connected via DP to an nvidia 1080. When my power settings turn off my monitor 9/10 when resuming my secondary monitor receives the "No display signal" message and remains off. Using these key combinations has worked every time. thanks! – John Jan 6 at 22:08

for me switching from gdm3 to lightdm display manager did the trick

  • For this, I did apt remove gdm3 & it auto-switched to ligthdm (I think). Works like a charm, but I'd rather have gdm3 back if possible :( – shad0w_wa1k3r yesterday

Sorry if what I'm saying is weird (I'm using the google translator). In my case, I am using an Asus Vivobook S15. After desperately searching, I accidentally gave the solution (in my case) and I wanted to share it. What I did was install the Unity Desktop:

$ sudo apt install ubuntu-unity-desktop

And although it seems absurd, it began to work, almost magically. I hope this information is useful for someone. A greeting!

  • Bring pointer[ arrow ] to the bottom of screen
  • Hold down left click bar which locate below touchpad of laptop then push arrow toward to center of screen which move the screen up and you will see the blank bar on the bottom of screen then click it .... It works for me every time....Good luck...
  • Just try to change the boot mode to UEFI in bios.
  • I too encountered the same problem in my lenovo laptop.
  • Just changed the boot mode and i am running it flawlessly
  • Uh. "changed boot mode"? From what? To what? – zrajm Apr 8 at 21:11

i fixed it by changing Graphics BIOS configuration: Advanced -> Built-In Device Options -> Graphics, then switched from Hybrid Graphics to UMA Graphics. (on an HP laptop)

protected by Community Feb 16 at 19:20

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