I am trying to install Lubuntu on a Toshiba Satelite laptop. When I boot from the flash drive that has the image on it and try to install, I get two error messages:
[ 0.004964] __common_interrupt: 1.55 No irq handler for vector
[ 2.352043] integrity: Problem loading X.509 certificate -65
Just to check that it wasn't Lubuntu that was causing the problem, I also attempted to install Ubuntu Desktop with the same results.
I have tried various answers I found on Google without success. For the No irq handler for vector error:
- No irq handler error while installing Ubuntu 20.04
- I tried selecting the Safe Graphics mode, which resulted in the same error (and unlike the answer on the above question, it did not eventually boot into Lubuntu/Ubuntu).
- I tried editing the command and adding
nomodesetbefore trying to boot. No change.
- https://ubuntuforums.org/showthread.php?t=1234983
- I tried adding the option
pci=nomsi,noaerto the command with no success.
- I tried adding the option
For the Problem loading X.509 certificate -65 error:
Most sources say that I should disable secure boot to get it going, but doing so does nothing to get rid of this error.
I can't seem to figure out either of the above errors so that I can continue with installation. Is there a troubleshooting step I haven't tried before that could fix these?
UPDATE:
In answer to the comments, here is some more information about the computer:
Toshiba Satellite C855D-S5357
CPU: AMD E-300 APU with Radeon Graphics, 1.3 GHz
RAM: 4GB
Graphics: AMD Radeon HD 6310 Graphics
If it's relevant also, it currently has Windows 10 installed, but the system can't handle it to the point of being unusable. That's just one of many reasons to install Linux instead.
