Score:0

Monitor displays black screen after start PC

ng flag

I have an Ubuntu on ryzen APU system.

Here is the problem: I start my desktop pc and see my monitor is blinking, I tried the monitor on another pc and see the monitor has a problem.

Then I use another monitor for my pc which I know it's working. But when I start the pc, it only shows me the motherboard logo and then black screen. When I expect to see ubuntu login screen.

What could be the issue? I know this second monitor is working, because I tried it on another pc.

Interesting thing is I can see the login screen on my first broken monitor. But I cannot on my second working monitor.

Any suggestions?

David avatar
cn flag
What version of Ubuntu? Has it ever worked? Do you have the right video driver? Question needs more details.
nevidev avatar
ng flag
Yes, I'm using this computer with Ubuntu more than six months without a problem until today. Version is Ubuntu 20
David avatar
cn flag
There is no Ubuntu 20 try again.
Score:0
ng flag

Now it's working. I unpluged all the cables and waited a couple of minutes then plugged them again, monitor is displaying normally. I still have no idea what was the problem but now it's gone. I'm writing this for anyone wonder how the problem has been fixed.

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