[Pre-Install] Kubuntu 26.04 LiveUSB is not starting on laptop

[UNIm95]

I have issue with Kubuntu 26.04.
It is not starting on my older laptop(Core i5 460m 8GB RAM).
Ubuntu 26.04 starts fine.
Kubuntu hangs on the loading screen.
If i press Escape key, i see that Kubuntu tries to connect to archive.ubuntu.com and gets `Temporary failure resolving archive.ubuntu.com`

MD5SUM of disk is ok.

Question: is it planned that LiveUSB is not working without internet?
Or is it bug in install disk?

[claydoh]

Try the usual things:

• Verify the downloaded ISO, not just the created USB stick.
• Try a different USB if possible
• Use different tools, such as Ventoy or Etcher, if you have not already.
• What graphics does it use?

The hybrid EFI/BIOS-MBR ISOs seem more touchy about being written, which is a reason why I suggest ventoy -- no burning.

It is possible that you are at the limit, age-wise, with a 16-year-old CPU. Plasma does want to use OpenGL, not sure if this is more so than Gnome tbh.

Try allocating more memory to graphics in your BIOS if this option is available.

Try booting in Safe Graphics mode from the grub boot menu.

[UNIm95]

Try the usual things:

• Verify the downloaded ISO, not just the created USB stick.
• Try a different USB if possible
• Use different tools, such as Ventoy or Etcher, if you have not already.
• What graphics does it use?

The hybrid EFI/BIOS-MBR ISOs seem more touchy about being written, which is a reason why I suggest ventoy -- no burning.

It is possible that you are at the limit, age-wise, with a 16-year-old CPU. Plasma does want to use OpenGL, not sure if this is more so than Gnome tbh.

Try allocating more memory to graphics in your BIOS if this option is available.

Try booting in Safe Graphics mode from the grub boot menu.

ISO SHA256SUM is same like on https://kubuntu.org/alternative-downloads/.
I'm already using Ventoy.
And Ubuntu 26.04 was booted from same USB.
GPU is Intel's HD graphics.
Safe mode graphics also is not working.

[die.boer]

can you post the output of

lspci | grep VGA

from a working Ubuntu 26.04 live session?