Flickering screen and system is shutting down

[Pandakusum]

there is "intel_iommu=igfx_of" after quiet splash. i don't remember why i added it. should i remove it

[Aravisian]

@Pandakusum

there is "intel_iommu=igfx_of" after quiet splash. i don't remember why i added it. should i remove it

Yes.
This was a suggestion made earlier that did not help to resolve the issue. You should remove it.

[Pandakusum]

done. it worked. thank you so much

[Pandakusum]

I login to my pc after 2 days and now i'm having same problem again

[Aravisian]

maybe try i915.enable_rc6=0...

[Pandakusum]

So, I tried it and it worked until now, it start happening again today

[Pandakusum]

I have a question
Can power connector plug cause this kinda problem?

[Aravisian]

@Pandakusum

Can power connector plug cause this kinda problem?

Yes, that is possible.
There are several possibilities.
I still think it is more likely that the Graphics are involved.
It may be that the integrated graphics are running out of memory after a while - as it uses your system RAM to have VRAM.

You could test that by freeing up RAM every several hours:

[HOW TO] free up RAM while working

I just discovered this one... Sometimes, your RAM fills while you are working and it is not a good time to reboot. With three commands, you can clear out some RAM: sudo sync sudo sysctl -w vm.drop_caches=3 IMPORTANT!: You must run the following command again, or information currently in RAM that you are using and need could be lost sudo sync After running all three of the above, you should see a marked increase in Available RAM.

[Pandakusum]

Ummm now its shutting down as soon as it starts.

[Aravisian]

@Pandakusum

Ummm now its shutting down as soon as it starts.

It just started doing this before you did anything else, right?

[Pandakusum]

I changed grub parameter back to i915.enable_psr=0

[Aravisian]

Using Recovery Menu, are you able to remove that parameter entirely?

(I have removed the Solution mark since this issue is still unsolved)

See if the computer will boot and stay on (even with flickering).

[Pandakusum]

I used recovery mode then i was in grub bootloader idk. Now its not shutting down the problem is still there. I got rid of parameter after that.

[Aravisian]

@Pandakusum

the problem is still there.

Which problem is still there?

[Pandakusum]

Screen start blinking whenever i try to run any application

[Aravisian]

Ok... but at least now it is not immediately shutting down on startup...
So your current issue is:
Flickering and occasional freezing; computer will not shut down at the prompt, Correct?

[Pandakusum]

Not freezing but the screen was blinking whenever i open any application.
So, here's what happened. I checked my cpu and all the connection inside. For now the problem is gone. But im unable to open any browser and vs code.

[Pandakusum]

Ok, so i tried to reboot but its taking forever

[Aravisian]

Have you Checked Any Logs that may give some errors or clues as to what is going on?

Sorry for the very long delay... it has been hectic here.