Help with Configuring Grub Boot Menu Timeout (no time setting ever 30 sec)

[TinyTim]

I keep everything basic, generic, simple, nothing exotic, sexy, or powerful, and no gaming, for example.
Basic work: email, word processing, studies/research/learning on the Internet, some social media (at YouTube, for example).

The only exotic thing I use is a nvidia proprietary driver, which I have to use for publishing. Figuring it out is a quest I hope nvidia remedies, before I do. I can't even understand how to use dkms properly after many hours of reading. I have put kernel updates on hold until problems start arising, then update and hope the nvidia driver and kernel match up.

[Snowhog]

I can't even understand how to use dkms properly after many hours of reading.

You install dkms. That's it. You don't do anything afterwards.

[jglen490]

Maybe jglen deals with this.
I, frankly, never give it a thought! That's because I always use integrated Intel graphics, for example.
I install LTS, I accept any and all updates I see at Discover, and that's it, done deal.
But, again, I may not be a typical 'Linux-type' user because I keep everything basic, generic, simple, nothing exotic, sexy, or powerful, and no gaming, for example.
Basic work: email, word processing, studies/research/learning on the Internet, some social media (at YouTube, for example).

I use a laptop right now. It has Intel Iris Xe graphics. When I was building my own desktop units, I kept things simple. If I had an Nvidia graphics card, I only used the recommended driver. I've tried pushing the driver envelope, but it was never worth it. When a new LTS comes out, it goes on with a clean install. Sometimes I wait until the first point release to that LTS. When I had the 22.04 LTS for a while, I moved up to the 6.5 kernel level, installed using Synaptic. As Qqmike noted, I also do every update that shows up as soon as possible within the current LTS and I use the command line to install system updates. No shade on Discover - it is getting better - but the command line gives better feedback. I have PPAs, carefully chosen. I don't chase software just because some source says it's cool, and to me if some software that is in the stock repos works well, I don't chase backports just because the version number is higher.

I don't have exotic needs, I'm something of a skeptic, and I hate to do things that are unnecessary such as jumping on the next release solely because it has a larger number.