Odds are your Linux install overwrote OCLP. You’d need to install OCLP again and configure it to boot from either Mac OS or your Linux install.
And with GPT partition you can have 128 partitions so ~120 different OSes easily on a single drive.
OP is using OpenCore Legacy Patcher to run an newer OS on an unsupported machine. The option boot menu won’t work, they’d need to get back to the OCLP menu to boot Mac OS.
Ya know, I wish I could at least say something about being european and using commas instead of periods for decimal points, but I can’t even say that. Still 6MB fully installed is nothing these days.
Modern gaming laptops with Advanced Optimus are switching back to a mux for everything.
They’re still some of the best machines out there. Every other machine has gotten shittier at an even more rapid pace.
POST is supposed to check all CPU cores and all RAM. It’s check isn’t perfect, but it does check them all.
It’s not even machine specific. UEFI vs legacy bios boot mode is universally supported in all but the latest systems. If OP had to switch to legacy boot mode then they probably made the USB “incorrectly”. You’d run into the same issue on windows if you made the USB boot drive for legacy bios mode.
If someone with no experience installs Linux on their machine, and has to spend 20 hours fixing all of the problems they’re not going to stick with Linux. It doesn’t matter which distro it is, they’re just going to say Linux sucks and never use it again.
There’s a pretty big difference between trying to run software for X OS on Y OS, and trying to just make your computer do basic tasks. The average person doesn’t know that Nvidia are a bunch of assholes, nor do they care.
Nvidia is by far the most popular dedicated GPU manufacturer out there. If distros can’t figure out how to make it “just work” then Linux will never take off outside of the nerd market.
5 hours watching a video is not that unreasonable for a machine of that age, especially since it’s Intel.
https://www.pcmag.com/reviews/lenovo-thinkpad-t490#:~:text=Video Playback Battery Rundown Test
According to this review they got 10 hours with wifi off, playing a 720p video that was stored locally on the machine. Youtube is going to have plenty of background tasks going on, wifi is going to be active downloading things, and you’ve probably got more than just youtube in the background so I would consider 5 hours to be expected without really delving deep into power saving (and probably killing performance).
We use their CDN, and they do our load balancing for work and they’re great at it.
What standby mode does your laptop use? Classic S3 standby, or S0 standby like most modern laptops are forced into?