Going to make an assumption here, but if the thing works in -current then the fix is right there for the taking.

There's people who can, I think bassmadrigal and LuckyCyborg have done it, based on what I've read on this forum. But FWWIW that's work, which implies some form of compensation.
I agree that replacing the operating system's video stack is not a trivial task, but I disagree that following -current is less work than simply replacing the stack.
Because the stack replacement is done once, and -current keeps moving on, introducing regressions on multiple fronts and all that.

Totally agree, no argument from me.

I listed my video cards, if you can suggest what fix I need, I will greatly appreciate it.

Like, financial compensation?

I use 14.2 on my second-hand Lenovo Thinkstation and it works just fine. But I understand that people who use more up-to-date hardware have problems with it.

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You've listed them so it's my responsibility now? I don't have any incentive to work on them, since I don't own them, no?
But to try and be helpful, you must recompile from -current sources: Xorg stack, mesa, libdrm, the relevant radeon driver and the kernel.
Which may imply you also must recompile multiple other dependencies of these things, add a new meson build system, etc, etc.
It's not something you'd do for fun, I guess, like trimming other peoples' yards isn't something I'd do just for kicks even if I knew how to do it properly.

Not always, but probably depends on who does the work, and for how long.

I never said that.

This is what I actually meant, so thank you for the quick reply and suggestions.

In case I was not clear in my post: I did not ask you to do any actual work for me. Just asked for a suggestion and you already did that.

This can be the beginning of a very long and pointless conversation, so I will not take it any further.

I think it all depends on the use case/required software. For my typical end user/total slacker needs, 14.2 install is fine given my older hardware.

Slackware 14.2 32bit full install minus KDE/KDEI on a Thinkpad X61s with 4Gb RAM and a 120GB SSD with LVM based whole disk encryption, lilo boot, slackpkg update, I monitor the changelog. Xfce4 is the DE.

I have a handful of slackbuilds/external packages (Ruari's 'latest firefox', OpenOffice, some maths stuff).

My drivers for changing from *this* 14.2 install to 15.0 are: Clean install of 64bit OS; availability of updated Web browser (firefox) from Slackpkg; some of the KDE apps. There is no big hurry.

In my home, 14.2 runs:

- two desktop, one dual boot 14.2 or -current, the other 14.2 only (until earlier this year both were also used for business), hardware acquired pre 14.1;

- a headless file server, hardware acquired pre 13.0;

- a travelling laptop, just three years old;

- an ancient laptop, dual boot 14.2 (for our cat's youtube games) or windows (for my model trains), hardware acquired pre 12.0 and now much less reliable than the software.

It's been very reliable from the beginning (14.1 in our case), and we haven't had any problems installing anything we've needed. So we don't find it at all too old to use.

It's all right, it's OK.

I was using 14.2 on my laptop and server until just a few months ago when I got a Pi400, then since it needed -current I upgraded my laptop and server to match. I was running a lot of software on 14.2 just fine.

I use 14.2 with WindowMaker on my Athon quad-4 desktop machine and personal t420 laptop. I have 2 laptops with current, one of which is targeted for 15.0 to replace my wife's Debian machine. If possible, will upgrade the desktop to 15.0 when released.

Depends on the hardware. I've got a Ryzen 5000 series machine with an NVME OS drive and a GPU with which nouveau as provided by 14.2 completely freezes the system on boot before giving an opportunity to login and blacklist it.. These things could be worked around but it's so much easier to just run -current.

Using Slackware64 14.2 as an everyday machine. KDE 4 is only lightly customized. I have a few Slackbuilds (modified as needed/wanted for updated versions and one different library) and some AlienBob packages ex. Chromium and OpenJDK (for the arduino IDE slackbuild.)

My tower is 5 years old, although I think the model (standard model from a big box store) was released a couple of years earlier.

14.2 multiboots with Windows 10 and and a few other Linuxes including Slackware64 -current that I installed to try out and give feedback for any problems (installed November or so, one problem only so far with kernel 5.10.x.)

Everything is working well for me on 14.2 and I still use it more than anything else.

TKS

Everyday I use it for development do to the GLIBC. If it builds static with static prebuilt libraries it will run on everything..
For work and stability no other OS.

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I belong to the 14.2 on Thinkpad clan. I like a lot of the KDE applications, but gave up on it as a DE some years back. XFCE is my preferred DE. I'm hoping for a detailed howto when 15 finally arrives.

Using 14.2 on my desktop PC. The PC is 9 years old but still very fast for my needs.

I have 14.2 dual booting on 3 desktops and 2 laptops and on a qemu vm for testing (I also have it on several servers, but that wasn't the thread question. :-) )