After installing zorin os 17 at restart
/dev/mapper/ubuntu--vg-root: clean, 1737827/15081472 files, 51603057/60309504 bl
ocks
_
And violent flashing of screen and with lenovo and zorin logo
How do I fix this?
So I ran updates and after that the abobe code thing is gone but now there is an underline like thing above and lenovo and zorin logo is blinking continuously and it is taking a hell lot of time to start.
For a couple of restarts the above code was gone but now it's back
I haven't run into this personally, but this mentions a thinkpad as well, which may be applicable to you here:
boot - Ubuntu hangs on startup at /dev/mapper/ubuntu--vg-root. How do I fix it? - Ask Ubuntu
I know it's for ubuntu 20.04, not 22.04, but the reply may apply to you, which is:
- while the ThinkPad is starting up, keep Shift pressed until you are in the Grub options screen.
- Press e to change startup options. You don't need to worry about breaking anything: those changes will only affect the current boot process
- in the line that starts with "Linux", remove "quiet splash". I also had to remove the veriable that came after it.
- Press Ctrl + X to continue boot
From my understanding, in their case this allowed them to view more errors and see what the real crux of the problem is.
If this is a fresh install though, it may be worth downloading a new iso and Verifying that that ISO is good (not corrupt, as may be the case here)
tried this form Ubuntu forum, it didn't work. when the tutorial says the code will stop and the last thing where all it stops, will be the problem, except it doesn't stop and again goes to flickering again.
one thing I forgot to mention, that might be significant and may cause the problem, that before all this on a black screen prints this: ^[[2~ continuously.
That to me indicates that a key or input of some description is being pushed down constantly over boot. Is it possible there's a hardware fault going on here? Can you boot into a live usb and see if the error occurs? I would create a new live usb, with a fresh ISO downloaded and verify the iso to make sure that it's definitely good, and go from there.
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Hi.
Changing GPU working mode from dGPU to Hybrid fixed my problem on my Lenovo Legion 5
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I am personally not a fan of IGPU's in notebook computers, they are only good for watching YouTube video's, and basic computer usage. But if you need a GPU for doing anything real, like photo production, video production, 3D modeling, gaming, the Nvidia or AMD GPU is the way to go there.
Let's start at the beginning. Running Zorin in Try Zorin mode, please post back the results from a terminal command:
sudo lshw -C video
Additionally is Zorin the only OS? Has secure boot and fast boot been disabled in the BIOS? Is the hard drive set to AHCI in the BIOS (it should not be RAID)? Have you ever updated the BIOS?
after some days all of it fixed by itself automatically. now everything works.
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Well glad to hear it's working at least. Consider it a new year miracle 
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so this problem is officialy back.
I'm able to start succesfully. this is the output in installed zorin.
yes I've disabled secure boot, I can't find fast boot option.
how to see that?
I think bios have been updated with lenovo firmware update, at that time when i was on windows.
my system info
Take a look at this askubuntu thread re flickering:
(Zorin 17 is a fork of Ubuntu 22.04)
I may have done this previously, in Startup, advanced setting, I had 4 options (2 kernel versions, each have 1 normal option and one recovery option).
What I have done now is re-installed zorin os, and now in startup when printing ^[[2~ continuously I have to break the sequence be pressing any key, and It will start normally which if I don't do, it starts flashing again.
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There is absolutely no logic to it, but I find the quirkiness fascinating, and I do appreciate jank once in awhile too.
Yes I agree, but unfortunately it's happening
And if i don't press any key this is the situation(this video is from before new installation today, but it's the same in new installation if I don't press any key).
That symbol denotes the start of a command, then the sequence - in this case the insert key.
Have you tested booting with the keyboard disabled and a USB keyboard plugged in?
@silentsurfur are you using Wayland or X11?
I do have another laptop but don't have a separate keyboard, as both are thinkpad.
thanks a lot my friend,after this, I vigorously pressed the insert key when the laptop was shut down, and boom! it is fixed 
. Hope after all, it is just a key issue. maybe that's why it fixed automatically and then the problem came back again by itself.
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