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I don’t think Linux is for aging hardware. It just depends of your needs. Linux support all mainstream hardware, I guess. Never had any problems with something not working on Linux. I remember many years ago I had a scanner, which used to work only with Win XP or Vista because of outdated drivers. Windows 7 was too modern for it. I tried it with Linux and it worked. Now I have some random-hardware PC, everything works. It’s Intel Core 11400 hardware, AMD RX-GPU, quite modern. I think problems could be on laptops with display backlight, sleep mode or something else. Desktop PC’s should be good. Even if you have last-gen hardware, just use the latest kernel. I haven’t heard about Linux build hardware. It used to be a thing for Hackintosh builds.
My previous company HP laptop worked better on Linux, it wasn’t that hot all the time. Because Linux was consuming less system resources. My work: Browser + IDE. I had dual-boot Win10 and Ubuntu. Ended up with Windows because of Pulse Secure crap and some specific network restrictions. It was years back.
I remember I gave up with Ubuntu 5 years ago at home because after system update It just failed to boot. I didn’t touch anything. I don’t know if it’s possible today. And Proton wasn’t here and I wanted to play games. I remember I was using Lightroom, but for my very basic photographer needs Darktable works perfectly. And it’s free!
All you need is basic troubleshooting skills. You need to google sometimes. I know that it could be an issue. Linux not for everyone. And it’s fine. It’s good to have a chose. Linux gives that choice.
My pixel 4a was affected by that update. I ended up buying a new phone. I don’t even want to install something like Graphene os. So many privacy-based limitations I don’t really need. And I have no desire to try Lineage OS. All I wanted is to have a functional phone. I can’t trust google long-term hardware reliability. They don’t even gave an explanation. I don’t think that I will consider any Google hardware in nearest future.