At this point I’m fairly certain the OP regrets having asked the original question 
.
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Possibly. That’s mostly my fault, I take the blame. 
But I regret nothing, the OP got a fairly decent answer and can disregard everything else that follows. And the rest of us got to play in the mud
I would only regret having to use an lts kernel on a rolling release OS that isn’t up to date! 
Thank you all, but you guys got me really confused. Anyway, I installed according to
`sudo pacman -S linux-lts linux-lts-headers`
installation ran smoothly, but I cannot find this LTS critter. Where is it?
Not in the “Advanced” section of my grub menu
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It may be necessary to regenerate the Grub configuration file after a kernel install, if you do not have a hook set up to take care of that.
sudo grub-mkconfig -o /boot/grub/grub.cfg
Then reboot, and check again in the advanced options of the Grub menu.
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Thank you BluishHumility, terrific! Like magic. Now in “advanced”
EOS… with Linux linux-lts
EOS… with Linux linux
EOS… with Linux linux (fallback iniramfs)
- linux.lts (obvious, default)
- linux (what I had before)
- linux (fallback iniramfs) gives me a headache, what is it, and when to use?
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The fallback image is basically there in case of emergencies. You shouldn’t ever need to use it unless something is wrong.
As an over-simplified explanation, the normal initramfs you boot with has been specially created to contain all the modules you will need for booting the system, but not contain all the modules you don’t need. The fallback image takes more of a “kitchen sink” approach, and includes basically everything.
If your system is not booting off the normal image, but booting with the fallback image succeeds, that is generally an indication you need to rebuild the normal image because its configuration is no longer sufficient.
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Thank you very much :D, and only one last question for today: how can I make, say, “linux” instead of “linux-lts” default? That is, how to move the “linux” line on top?
You can add a GRUB_TOP_LEVEL line to your /etc/default/grub. See here:
So, for the regular linux kernel, you’d add the following line to /etc/default/grub:
GRUB_TOP_LEVEL="/boot/vmlinuz-linux"
Save the change, then regenerate your grub with sudo grub-mkconfig -o /boot/grub/grub.cfg.
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Thanks, to you and the others here! I learned a lot within these few days.
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Another good example why you’d want to use LTS by default 
P.S. Who needs keyboard anyway…
A (ahem) terminal-centric distro.
P/S: I know you were being sarcastic.
Can’t wait for someone to complain that keyboard doesn’t work on 
terminal-centric distro…
No keyboard? Psh. No problem. On-screen keyboard to the rescue…
I’ve been been back on Arch for maybe a month again. I was using the default kernel and saw lots of posts on the web of people having issues with the recent new kernel releases but I wasn’t having any issues. However I just decided that I would switch to the lts kernel because I don’t see that many advantages of me running the newest kernel since I have an Nvidia gpu, I can understand the advantage of running the latest kernel when you have an AMD gpu since the amdgpu driver is packaged in the kernel if you play games with your system then it’s nice to have the latest driver available.
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internal keyboards on some laptops
Those are crap anyway, I say it’s an improvement if it doesn’t work. The best way to use a terminal is with a LOUD CLICKY mechanical keyboard.
I mean, if your neighbours can’t hear you type, why even bother using a computer?
Even here you’re unlikely to notice a difference, unless you really have a very recent AMD graphics card (as in: released in the last few months, that new). In that case, running the latest kernel might make a big difference. Or it might not…
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I think the vast majority of the time the breakage is not going to come from the kernel. 
Yes, 99.9% of time, it’s user’s fault.