I've had problems with printer drivers consistently since I switched to (K)ubuntu on the desktop in 2010ish. Since 2 years however, they are basically gone. That's thanks to IPP becoming more commonplace.

Then I'm having issues with PTP from my phone. Windows is fine but Plasma is broken. The phone also offers an MTP mode which thankfully works.

When I bought a Lenovo netbook in 2015, I was unable to set the screen brightness. It took a few years but eventually the issue got fixed with a new version of Kubuntu.

On my brand new ThinkPad T495 I'm having an issue with the graphics drivers, which crash and require me to issue an ACPI reboot when I close the lid and reopen it again. Pretty sure it's this issue as the error messages, symptoms and working workarounds all match. https://gitlab.freedesktop.org/drm/amd/issues/883

KDE connect made plugging my phone into my computer basically obsolete, at least for me.

It might be that I use pretty standard hardware and don't have any fancy requirements, but really, I have evangelized several people and installed mostly Xubuntu in their laptops and I haven't had problems.

My APU stuck in OpenGL 3.3 without video hardware decoding, would like to get OpenGL 4.4 and hardware video decoding back that it had with the AMD proprietary driver.

Support for 4K monitors and multiple screens is still pretty miserable and causes stuttering, freezing, and crashing

Never had any problems with my 4K screen in Manjaro KDE, and only needed to change Xft.dpi in .Xresources in Manjaro i3

I’m not saying it cannot work but I am saying an IT department cannot just install Ubuntu on a laptop, hand it to someone who doesn’t know how to hack at Linux, and have the display aspects “just work” with any monitor.

I have no beef with Linux, but we have to be honest about what it needs to be capable of to compete with MacOS for the general user unable or unwilling to hack at it a bit.

If the solution in any way involves "enter this command", you have lost the vast, vast majority of users. Those users will never have any idea that "Catalina broke SSH".

I think you are wrong. I have seen it happen more than once, even in my current company. Especially when companies use mostly online tools, like our case, it's a no brainer.

Do you mean I am wrong that standard users won't notice ssh broken?

You're right, my statement may have been too strong.

We do know that Catalina isn't broken for everyone though as alluded to by others in this thread. No one in my company or anyone I personally know with a MacBook has been affected. There must be another interaction happening.

Sorry, no, I mean that you can really give Ubuntu units to people and expect it to work without any issues. If this works in schools it works also for power users :)

I've never had a problem with my 4k in fedora, but I only have a single monitor

Linux had good support for multiple monitors when I started using it in 2003. Obviously something is crashing but it's not apt to be plugging in a monitor.