Blank Screen at Boot After Hard Shutdown, AMD GPU and 25.10

Support and Help
, ,
1

Ubuntu Version: 25.10

Desktop Environment (if applicable): GNOME

Problem Description:
No display after boot.

It began when I was watching a video on Freetube and accidentally pressed the space bar for a few seconds. The video got stuck alternating between pause and resume and my system became otherwise unresponsive, so I held down the power button for a hard reset.

After this, when I boot the system I have no display at all after the BIOS splash screen. I don’t think it’s a hardware failure as I booted into a CachyOS live USB with absolutely no issues.

I have a Timeshift backup and data backup, and the drive should be fine so it wouldn’t be catastrophic data loss, but I really want to fix this and not reinstall.

Relevant System Information:
GPU is AMD 7900 XTX

Screenshots or Error Messages:

What I’ve Tried:
I was trying to troubleshoot with a chatbot and got as far as booting with the nomodeset parameter.

Before Posting:
I reviewed this thread from 17 days ago, similar but didn’t go anywhere.

I am generally available for a few days and would love some help troubleshooting and hopefully resolving this. I am missing out on a gaming sesh with friends as we speak.

2

Okay it’s mysteriously fixed! How do I mark solved? Scared the me last night after multiple reboots with no display.

3

You can mark your own reply as the solution if you consider the issue resolved (using the Mark as solution option).

For reference, I’ve personally encountered a very similar situation with an AMD RX 580. In my case, it wasn’t an Ubuntu issue at all, but a display cable / port problem (HDMI).
switching to a different port immediately fixed the blank screen after boot.

4

Since this is thankfully resolved, I will close the topic.