Solid black cursor with blank screen with pink vertical lines

[peshql]

Im an ubuntu user and i had an black screen blinking cursor issue when i open... i tried cmd and manymore ways and sadly nothing work... im currently trying how to fix the issue, will inform u later if it resolve or not but from yesterday 4:30 pm - present (gmt 5:45) im stuck and can't load GUI. When i alt + left arrow it gimme acces to terminal

 

[Condobloke]

G'day peshql, Welcome to Linux.org

Did you Disable Secure Boot before installing ?

Details of which Ubuntu you installed and what the pc/laptop is that you installed it on would be good

 

[theLegionWithin]

in my experience, what you're describing is usually caused by hardware failure - either the gpu or the monitor (or, if it's a desktop, the video cable) has died/is defective.

is this a laptop or desktop? what are the hardware specs of the computer?

 

[peshql]

in my experience, what you're describing is usually caused by hardware failure - either the gpu or the monitor (or, if it's a desktop, the video cable) has died/is defective.

is this a laptop or desktop? what are the hardware specs of the computer?

A desktop, its my father computer so i dont have many idea of it

 

[peshql]

G'day peshql, Welcome to Linux.org

Did you Disable Secure Boot before installing ?

Details of which Ubuntu you installed and what the pc/laptop is that you installed it on would be good

Its my father computer so i don't have any idea, i had install ubuntu 20.04 lts

 

[peshql]

Its look like this

 

[peshql]

Plus it says "Your HWE will expired on April 2025"

 

[theLegionWithin]

Its look like this

ok, so it's a desktop - see if there's a different video port (from the integrated gpu) and connect the monitor there instead

if that doesnt fix it and/or there's no dedicated gpu (ie all you have is the integrated gpu), then the next step would be to connect the monitor using a different video cable - and then use a different monitor if that fails to resolve the issue.

if it's still not working after trying all of those steps then I'd consign that computer to the scrap pile and buy a new computer.

 

[peshql]

ok, so it's a desktop - see if there's a different video port (from the integrated gpu) and connect the monitor there instead

if that doesnt fix it and/or there's no dedicated gpu (ie all you have is the integrated gpu), then the next step would be to connect the monitor using a different video cable - and then use a different monitor if that fails to resolve the issue.

if it's still not working after trying all of those steps then I'd consign that computer to the scrap pile and buy a new computer.

I already disconnected all thing except keyboard

 

[peshql]

Update : i tried some code and now im not having a solid cursor instead im having a CLI instead of GUI in tty1with that pink vertical display

 

[theLegionWithin]

I already disconnected all thing except keyboard

only other thing I can think of would be to unplug the power cable from the computer, press and hold the power button down for 30 seconds, then release it. reconnect the power cable & power on the computer. if the display issue persists, then you have a dead gpu (or if it's an integrated gpu, a dead computer).

 

[peshql]

only other thing I can think of would be to unplug the power cable from the computer, press and hold the power button down for 30 seconds, then release it. reconnect the power cable & power on the computer. if the display issue persists, then you have a dead gpu (or if it's an integrated gpu, a dead computer).

I got an extra monitor tho, should i connect that?

 

[Condobloke]

Yes, give the other monitor a try....first

Then, if that does not work....do the below

@peshql, what code did you type in ?

does that pc have a graphics card?

In the Terminal, copy and paste this command in and hit enter

inxi -Fnxxxz

copy and paste the info it gives back here in your next post

 

[peshql]

Yes, give the other monitor a try....first

Then, if that does not work....do the below

@peshql, what code did you type in ?

does that pc have a graphics card?

In the Terminal, copy and paste this command in and hit enter

inxi -Fnxxxz

copy and paste the info it gives back here in your next post

Update : in another monitor pink vertical line wasnt there + i cant use that indi cmd cause it wasn't install when i try to install

 sudo apt install inxi

it gave an output you don't have enough free space in /var/cache/apt/archives/ .

 

[peshql]

@Condobloke i used sudo systemctl set-default multi-user.target
Code:
Created symlink /etc/systemd/system/default.target → /lib/systemd/system/multi-user.target.

systemctl get-default
Code:
multi-user.target

To remove that line

 

[Condobloke]

Did you use the 2nd monitor to type that command in ? (sudo apt install inxi)

 

[peshql]

Did you use the 2nd monitor to type that command in ? (sudo apt install inxi)

Yes

 

[Condobloke]

Ok, seeing this 2nd monitor works, I think we need to go back to basics.

you downloaded Ubuntu 20.04.

Are you aware that 20.04 has its end of life in April 2025....next month

AT that time it will not receive security updates

It might be a good idea to choose another distro now, that has more life

When you downloaded ubuntu, you used a program/app to load onto a usb drive...correct ?

 

[Condobloke]

As a replacement distro, you may be wise to choose one that has a lot of support.

I would recommend Linux Mint. However, the choice is yours

 

[Fanboi]

Well, your photo looks like a busted monitor.

This already screamed hardware...

Update : i tried some code and now im not having a solid cursor instead im having a CLI instead of GUI in tty1with that pink vertical display

This 99% confirms it...

Update : in another monitor pink vertical line wasnt there + [...]

My thoughts: Replace your monitor. Test the monitor on another machine just to be sure, but green/magenta(pink)/yellow lines usually mean dead monitor.

Edit:
Different topic:

When i try to install

 sudo apt install inxi

it gave an output you don't have enough free space in /var/cache/apt/archives/ .

# apt-get clean && apt-get update && apt-get install inxi -y

1. If you have a single partition ("Everything on one partition") you're running low on disk space. In future give /var its own partition. Recommend 10GB unless you are doing serious web/database stuff, but for a desktop, that's fine.

2. If you have a separate /var partition, make sure it's a decent size.

3. You may have a build up of crap:
Post the output of: du -hs /var/log/
and du -hs /var/cache

(edit: found the summary arg, lol)