Computer started freezing with black screen

Not sure it’s a hardware issue, but there was no general system category.

I’ve been using openSUSE this time for at least 7 months without major problems. However, starting yesterday if I would step away and come back it would be frozen on a black screen. To fix it, I have to shut it down using the power button on the box and then start it again.

Very terse post … not much info for folks to assist.

What DE?
Has it gone to black screen always? Since install? or after some event, like an update, etc?

Do you have Sleep enabled?
Do you have Hibernate enabled?
If Sleep or Hibernate are enabled, when does it go to black screen? With Sleep timeout or Hibernate timeout?

With some black screens, even though it appears to be a system locked up, a user can switch to Console 1 (virtual console 1). I can still do it today with CTRL ALT F1 … that tells me the system isn’t locked up, but the DE is borked. Can you do that?

Sometimes CTRL ALT Backspace can back out of the DE … tried that?

1 Like

-Version-
Kernel : Linux 6.4.0-150600.23.65-default (x86_64)
Compiled : #1 SMP PREEMPT_DYNAMIC Tue Aug 12 00:37:41 UTC 2025 (aedcb04)
C Library : Unknown
Default C Compiler : GNU C Compiler version 7.5.0 (SUSE Linux)
Distribution : Unknown distribution
-Current Session-
Desktop Environment : Unknown (Window Manager: GNOME Shell)
-Misc-
Uptime : 5 hours, 28 minutes
Load Average : 2.90, 1.45, 0.93

From original terse post:
starting yesterday
at least 7 months without major problems.

Additional info:

Screen blank after 8 minutes
Automatic suspend after 2 hours

I think it’s just after hibernate timeout.

ctrl alt f1 did not work

Ctrl Alt Backspace did not work either.

When I rebooted, there was an update. A similar post regarding Zypper update and Nvidia drivers makes me wonder if it’s resolved. I’ll see if it recurs tonight.

Thanks.

Ctrl-Alt-BS may be required twice in short succession in order to work. It’s not always enabled, but if you want it enabled, a .config file in /etc/X11/xorg.conf.d/ can do it at least for X11 users. The follow content added in 00-keyboard.conf there works for me on installations where it hadn’t been:

Section "InputClass"
        Identifier "system-keyboard"
        Option "XkbOptions" "terminate:ctrl_alt_bksp"
EndSection

If local I/O is totally frozen down deep, it may not be able to work.

2 Likes

The problem seems to have resolved itself after the update. I will reply if it recurs.

Thanks for your help.

How can one tell if I/O is frozen down deep or not?

Remote login works, but keyboard and mouse produce no apparent response, other than LED toggles from CAPS or NUM, screen is all black, or has a blinking or non-blinking cursor but otherwise all black, can’t reboot except via power switch or remote login.

1 Like

This topic was automatically closed 30 days after the last reply. New replies are no longer allowed.