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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).

Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.

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determining why/how hardware is supported in one distro but not another? (discuss.tchncs.de)

submitted 6 months ago by [email protected] to c/[email protected]

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For a given device, sometimes one linux distro perfectly supports a hardware component. Then if I switch distros, the same component no longer functions at all, or is very buggy.

How do I find out what the difference is?

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[–] [email protected] 6 points 6 months ago* (last edited 6 months ago) (1 children)

try to find what kernel version support was added.

how to do this?

There's no centralized database I'm aware of, it's just googling hardware + "linux kernel" and hoping to come across something in a mail list. Admittedly, not ideal or always fruitful.

thanks, I never heard of dkms before. I read the arch wiki, wikipedia, and made an attempt at the github repo (very long and over my head). The arch wiki only mentions nvidia. Is this something I need if I am certain nvidia is not the problem? Or is it a general thing?

It's a general thing, it was created to load kernel modules (drivers) without having to recompile the kernel entirely. Again without specifics of distro and hardware it's hard to generalize an answer. With arch there's probably a package in the AUR that could be used. (And the package will setup dkms for you). Doing it manually is a bit more involved but shouldn't be much harder than cloning the repository and running a command inside the folder.

Off the top of my head some components I've had problems with: touchpads, touch screens, wifi, ethernet, bluetooth, audio in, audio out, media keys. I have suspected others also like (onboard intel) GPUs but it's a little harder for me to even pin those problems down to the hardware.

So basically everything... Lol. Still hard to diagnose without specifics, vendor support varies wildly. A newer Intel wifi card is likely mainlined, while a realtek card is going to be living in hell. Ethernet is a weird one, I don't think I've come across any vendors entirely not working but perhaps something like a Killer NIC (built with a proprietary protocol) could fail.

Many of these examples sound like a laptop, the arch wiki may have more information they cover a lot of popular models and note hardware capabilities. Usually if putting Linux on a laptop it's about buying one with that intention in mind because it can be very uncertain. Laptop vendors do crazy things.. use non compliant bios, proprietary media keys and finger readers, custom audio stacks to make them sound better, the list goes on.

[–] [email protected] 0 points 6 months ago

I've had the issue on laptops and desktops but I have more experience with laptops. Also you are correct that arch-based tend to work pretty well. But I don't want to run arch on some devices because I do not plan update them regularly enough. I want a longer-term support distro. So in many cases I want to see what arch is doing that another isn't.

Only noting to be fair: in some cases arch-type does worse. I have an old HP desktop which is the case that arch couldn't see the ethernet connection. I could only use a USB-to-ethernet converter as PC doesn't even have wifi. But then I installed Debian and the ethernet works fine through the card. I do not need to solve this specifically as I plan to keep debian. Just one of the many mysteries.

I could find a specific issue that I do want to solve but it's such an ongoing thing I am hoping to learn the general principals rather than being spoon fed the answer. I'll only be back next week with another one.