[SOLVED] Version 8 installation no display

cdsJerry

Renowned Member
Sep 12, 2011
204
8
83
I'm getting ready to upgrade to version 8 starting with my backup server first. I'm installing from the ISO. I get the expected window where I'm selecting the top Install Proxmox option. The software starts to load and a few lines of text show on the screen. But then I get a message on the screen that says "Cannot display this video mode" and nothing more seems to happen. As I understand it there should have been a license screen or something to accept before moving forward with the installation but there's nothing displayed but the error.

This machine was running Proxmox 7.4-16 prior to my attempts to install version 8 this morning. Any suggestions?
 
There is a new "nomodeset" option under the "Advanced" section in the boot menu. It will start the new TUI installer without trying to set a higher resolution mode.

Does that work?
 
There is a new "nomodeset" option under the "Advanced" section in the boot menu. It will start the new TUI installer without trying to set a higher resolution mode.

Does that work?
That worked! The EULA is up on screen now so I'll go continue the installation. I have to admit, I've never heard of nomodeset before.
 
I've never heard of nomodeset before.
The option for the installer has been added with the latest major releases a few weeks ago. Since we now have a TUI installer as well.
 
I just downloaded the actual ISO of the Proxmox 8.1 installer and I also get the message "Cannot display this video mode" on my monitor.
I tried 3 different monitor sizes: 15", 19" and 22", they are all not able to show the installer. The monitor is connected via a simple VGA cable, I installed version 7.3 some weeks ago here with no problem.
I tried all possible options: GUI installer, TUI installer and under Advanced I only find "GUI debug mode" and "TUI debug mode", but both are not working. How do I set the "nomodeset" option?

How may I install version 8?
Do I really have to install version 7 and do an upgrade right away??

Regards,
Ingo
 
Hm, I just tried the same USB key on another machine, here it works without any problem?! Strange.
I now found the ISO 8.0 Installer and tried this one, here I found the "nomodeset" option. This worked.
So please integrate this option also in future installers! Thank you.
 

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