Try deleting/disabling colour profiles completely. Now that you mention
it, I have seen this bug reported a couple of times over the years.
See bug 1803840, bug 1785764, bug 938751
** Package changed: linux (Ubuntu) => ubuntu
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I have found that the rapid cyan lines disappear when I swap the color
profile from the default to the "test:blue" profile. The default profile
still retains the issue but the computer screen is less distracting
while using the blue. I have not opened the PC yet, but this does work
as a temporary s
I will make an attempt to open the PC to check if the ribbon cable or
any other cable is loose. I've opened other laptops before so I don't
expect there to be an issue on this one. I will report back what I find
on the inside but that will take some time.
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Actually I might have seen artifacts like that before. It was when I was
swapping LCD panels and I didn't have a clean connection on the ribbon
cable between the LCD and the laptop's motherboard. If you don't know
how to check that then it's safest not to try.
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That's quite unusual. I would lean toward thinking that's a broken LCD
panel.
Just in case, please also remember to run:
sudo update-grub
after editing /etc/default/grub. And then reboot.
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I have adjusted the kernel parameters by opening the grub file at
/etc/default/grub and changing the GRUB_CMDLINE_LINUX_DEFAULT from
"quiet splash" to "quiet splash i915.enable_psr=0". No significant
change to the issue has occurred.
** Attachment added: "blueLines.jpg"
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