[System] Trying to open TTY causes system to crash.

[BinzyBoi]

Hi there, I've been using Kubuntu for about a month now, and recently have been going through a tutorial on how to enable GPU passthrough on a single Nvidia card. The tutorial was going smoothly up until I got to a step that involved opening TTY, which to date I have never used. The tutorial stated to use the key command Ctrl+Alt+F2 in order to do so, but upon using the key command, my screen blacks out and I'm greeted with two small, thin lines on the top left side of the screen.

I've done everything I could think of doing at that screen, and have come to the conclusion that it just crashes everything. I was told by someone more experienced with Linux that TTY can be opened with the F1 through F6 keys instead, but all of those crash the system as well (with the exception of F1, which does nothing).

I've updated and upgraded my system through Terminal, which also hasn't done anything to remedy the issue. Considering that the TTY step is important for the tutorial, I was hoping to find out how I would fix the crashing. Below is some information about my setup in case it at all helps:

Kubuntu Release: 21.10 (non-wubi installation)
KDE Plasma Version: 5.22.5
KDE Frameworks Version: 5.86.0
Grub Version: 2.04-1ubuntu47

Desktop
CPU: AMD Ryzen 3 2200G with Radeon Vega Graphics
GPU: NVIDIA GeForce GTX 1050 Ti/PCIe/SSE2
32GB of RAM
SSD: One SAMSUNG MZ7LN512HCHP-000H1 (Internal)
HDD: WD My Book 25EE (External)

Thanks in advance.

[oshunluvr]

4K monitor?

The screen "going black with two small lines in the upper left sounds like terminal mode to me, just with an unreadable resolution. If you type something then press Enter does a third line appear?

You didn't post any info relating to "crashes". That does mean that not what's happening, just no evidence or info presented. You need to go through your log files and see what is occurring when you attempt terminal mode.

FYI, not all distros use the same console for the desktop. *buntus used to use CRTL-ALT-F7 but now they use F1 for the graphical console, so CRTL-ALT-F1 should have returned you to the GUI and CTRL-ALT-F2-6 should result in a terminal. Something probably is crashing on your system but without info there's not much to say.

[BinzyBoi]

*buntus used to use CRTL-ALT-F7 but now they use F1 for the graphical console, so CRTL-ALT-F1 should have returned you to the GUI

Thanks a bunch! I'm glad to see that TTY isn't crashing the system as I expected, since Ctrl+Alt+F1 does in fact return me to the GUI.

That being said, how would I go about fixing the resolution of TTY?

[oshunluvr]

Adding these lines to the end of /etc/default/grub and running "sudo update-grub" should do it:


GRUB_GFXMODE=1920x1080
GRUB_GFXPAYLOAD_LINUX=keep

Obviously use your desired resolution and one your video card supports.

[BinzyBoi]

Adding these lines to the end of /etc/default/grub and running "sudo update-grub" should do it:


GRUB_GFXMODE=1920x1080
GRUB_GFXPAYLOAD_LINUX=keep

Obviously use your desired resolution and one your video card supports.

Hi, sorry for the late response on this, but I added this to my grub, but it seems as if the issue hasn't been resolved. I still get the TTY looking like the lines as I did before. Is there another way to go about fixing this?