I've been using Ubuntu since 8.10 as my only OS. A HP nc8430 until 12.04, then a HP ZBook 15 since 14.04. Both laptops came with Windows (XP and 7.)
I had my share of problems but none as bad as the ones you wrote. Currently there are two problems
1. Poweroff is reboot, so I press the shutdown button when the BIOS starts. It has been like that for ages through more than one LTS but I shutdown very few times per year.
2. The fn brightness control keys don't work so I made two hotkeys to run a X11 brightness control program that steps up or down the backlighting by 5 points, 0 to 100. This is probably on NVidia's driver.
Everything else is fine and that's great considering that probably HP never tested these laptops with Ubuntu.
Two nuisances is still better than the alternatives: the very same hardware with Windows or an Apple machine with OSX (I can't stand the UI.)
I had my share of problems but none as bad as the ones you wrote. Currently there are two problems
1. Poweroff is reboot, so I press the shutdown button when the BIOS starts. It has been like that for ages through more than one LTS but I shutdown very few times per year.
2. The fn brightness control keys don't work so I made two hotkeys to run a X11 brightness control program that steps up or down the backlighting by 5 points, 0 to 100. This is probably on NVidia's driver.
Everything else is fine and that's great considering that probably HP never tested these laptops with Ubuntu.
Two nuisances is still better than the alternatives: the very same hardware with Windows or an Apple machine with OSX (I can't stand the UI.)