Instability in ALL stable and LTS distro kernels (IRQ #16 being disabled, PCIe bus errors, ath10k_pci) in Dell Inspiron 5567

[Bandhan Pramanik]

Hello,

The following is the original thread, where a bug was reported to the
linux-wireless and ath10k mailing lists. The specific bug has been
detailed clearly here.

https://lore.kernel.org/linux-wireless/690B1DB2-C9DC-4FAD-8063-4CED659B1701@gmail.com/T/#t

There is also a Bugzilla report by me, which was opened later:
https://bugzilla.kernel.org/show_bug.cgi?id=220264

As stated, it is highly encouraged to check out all the logs,
especially the line of IRQ #16 in /proc/interrupts.

Here is where all the logs are:
https://gist.github.com/BandhanPramanik/ddb0cb23eca03ca2ea43a1d832a16180
(these logs are taken from an Arch liveboot)

On my daily driver, I found these on my IRQ #16:

  16:     173210          0          0          0 IR-IO-APIC
16-fasteoi   i2c_designware.0, idma64.0, i801_smbus

The fixes stated on the Reddit post for this Wi-Fi card didn't quite
work. (But git-cloning the firmware files did give me some more time
to have stable internet)

This time, I had to go for the GRUB kernel parameters.

Right now, I'm using "irqpoll" to curb the errors caused.
"intel_iommu=off" did not work, and the Wi-Fi was constantly crashing
even then. Did not try out "pci=noaer" this time.

If it's of any concern, there is a very weird error in Chromium-based
browsers which has only happened after I started using irqpoll. When I
Google something, the background of the individual result boxes shows
as pure black, while the surrounding space is the usual
greyish-blackish, like we see in Dark Mode. Here is a picture of the
exact thing I'm experiencing: https://files.catbox.moe/mjew6g.png

If you notice anything in my logs/bug reports, please let me know.
(Because it seems like Wi-Fi errors are just a red herring, there are
some ACPI or PCIe-related errors in the computers of this model - just
a naive speculation, though.)

Thanking you,
Bandhan Pramanik