Kernel Upgrade

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frmb
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Kernel Upgrade

Post by frmb » Wed Aug 09, 2017 10:00 am

Hi all,
I'm running Linux Mint 18, Cinnamon 3.0.7,
4.4.0-53-generic #74-Ubuntu SMP Fri Dec 2 15:59:10 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
and I never did the Level 4 and 5 Upgrades from the mintupdate Frontend. I always accepted the Level 1 to 3 Updates.

My question: Is it safe to upgrade to 4.4.0-89.112, which is now announced as Level 5? Is it dangerous? There must be a reason for "Level 5" and a red exclamation mark.

Thx and regards

mr_raider
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Re: Kernel Upgrade

Post by mr_raider » Wed Aug 09, 2017 10:16 am

It's generally safe. Mint 18.2 reclassified the kernel updates to level 4.
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richyrich
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Re: Kernel Upgrade

Post by richyrich » Wed Aug 09, 2017 10:35 am

Seeing that it is in the same series (4.4 Long Term Support), I would consider that it contains bug fixes and security updates. I suggest that you perform the upgrade. :)
Changing series is a bit more risky.

It is easy to get back to your original kernel by holding down the Shift key during boot to get to the Grub menu where you can choose to boot your original kernel. Then use the Update Manager >View > Linux Kernels to remove the non-working kernel.

frmb
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Re: Kernel Upgrade

Post by frmb » Wed Aug 09, 2017 10:46 am

mr_raider wrote:Mint 18.2 reclassified the kernel updates to level 4.
Thanks for your answers, on my system it's still level 5.
Bildschirmfoto vom 2017-08-09 16-42-43.png
What about the Xorg-Server Update. Is it safe, too?

mr_raider
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Re: Kernel Upgrade

Post by mr_raider » Wed Aug 09, 2017 12:14 pm

frmb wrote:
mr_raider wrote:Mint 18.2 reclassified the kernel updates to level 4.
Thanks for your answers, on my system it's still level 5.
Bildschirmfoto vom 2017-08-09 16-42-43.png

What about the Xorg-Server Update. Is it safe, too?
Yeah you're still running vanilla Mint 18 which is the same as Ubuntu 16.04 LTS. If you installed Ubuntu 16.04 back in April last year, you have been kept on the 4.4 series kernel but updated to teh latest in the series. Feel free to upgrade.
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pbear
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Re: Kernel Upgrade

Post by pbear » Wed Aug 09, 2017 12:39 pm

frmb wrote:
mr_raider wrote:Mint 18.2 reclassified the kernel updates to level 4.
Thanks for your answers, on my system it's still level 5.
Which version of Mint Update do you have? (You will find that information under Help: About.) The current one is 5.2.9.
Time flies like an arrow. Fruit flies like a banana.
Running Mate 18.3 64 bit (by upgrade from 18.1-2)

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Schultz
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Re: Kernel Upgrade

Post by Schultz » Wed Aug 09, 2017 4:13 pm

I'm very security minded so I always update the kernel. Never had a problem, yet.

hcentaur13
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Re: Kernel Upgrade

Post by hcentaur13 » Fri Aug 11, 2017 9:46 am

It depend on the processor family you have sitting on your mainboard:
AMD before Ryzen: do what you like
AMD Ryzen or newer or Inel Skylake or newer: Use the update manager, Kernel Menue to install the most recent it shows
When your CPU is very old kernel 3.3.x may the best else use 4.8

No kernel is ever removed - except you use the kernel section of the update manager to deinstall it manually.

In grub menu the 1. line boots the most recent kernel always. When rthere is more than 1 kernel installed the mainenance mod (lin 3) gives you a selection of all kernels installed to boot.

It wille be a good practice to deinstall really not used kernels because the eats room on disk and can block updates!

frmb
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Re: Kernel Upgrade

Post by frmb » Mon Sep 25, 2017 2:25 pm

hcentaur13 wrote:It depend on the processor family you have sitting on your mainboard:
AMD before Ryzen: do what you like
AMD Ryzen or newer or Inel Skylake or newer: Use the update manager, Kernel Menue to install the most recent it shows
Can you please provide the command to find out that?

frmb
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Re: Kernel Upgrade

Post by frmb » Mon Sep 25, 2017 2:25 pm

I did ALL updates and everything is still fine
Thx for all hints

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Schultz
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Re: Kernel Upgrade

Post by Schultz » Tue Sep 26, 2017 10:08 pm

frmb wrote:
There must be a reason for "Level 5" and a red exclamation mark.
FYI: The red exclamation mark simply means it's a security update. Non-security updates get a download arrow instead.

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Re: Kernel Upgrade

Post by frmb » Fri Jan 19, 2018 2:16 pm

hcentaur13 wrote:It depend on the processor family you have sitting on your mainboard:
AMD before Ryzen: do what you like
AMD Ryzen or newer or Inel Skylake or newer: Use the update manager, Kernel Menue to install the most recent it shows
When your CPU is very old kernel 3.3.x may the best else use 4.8
It says Intel Core i5-6500 3,2GHz x 4, which seems to be Skylake.

OK then, due to Meltdown/Spectre I like to upgrade from actually 4.4.0-109 to 4.13.0-26, which is the most up-to-date on the list.
But for this kernel problems are reported (VB not running and so on). What is the recommended last really stable, newbie-proof(!!), robust kernel to go? 4.13.x? 4.12.x?

Thanx for all hints

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Schultz
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Re: Kernel Upgrade

Post by Schultz » Fri Jan 19, 2018 2:54 pm

frmb wrote:
What is the recommended last really stable, newbie-proof(!!), robust kernel to go? 4.13.x? 4.12.x?
Only kernel series 4.4 and 4.13 are being patched for Meltdown/Spectre, so I'd suggest going with the latest of either one. Also, where do you see 4.12? That's not listed in Update Manager.

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Re: Kernel Upgrade

Post by frmb » Fri Jan 19, 2018 3:03 pm

Thx for the very fast response!

You are right, I meant 4.13 or 4.11
But if 4.4 will be patched for Meltdown I don't need to migrate to 4.13 ...fine!

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Schultz
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Re: Kernel Upgrade

Post by Schultz » Fri Jan 19, 2018 3:15 pm

frmb wrote:
But if 4.4 will be patched for Meltdown I don't need to migrate to 4.13 ...fine!
You'll need the latest, which is 4.4.0-109.

EDIT:
I see you're already using it. Great.

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Re: Kernel Upgrade

Post by Termy » Fri Jan 19, 2018 3:47 pm

frmb wrote:Hi all,
I'm running Linux Mint 18, Cinnamon 3.0.7,
4.4.0-53-generic #74-Ubuntu SMP Fri Dec 2 15:59:10 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
and I never did the Level 4 and 5 Upgrades from the mintupdate Frontend. I always accepted the Level 1 to 3 Updates.

My question: Is it safe to upgrade to 4.4.0-89.112, which is now announced as Level 5? Is it dangerous? There must be a reason for "Level 5" and a red exclamation mark.

Thx and regards
I'm guessing the reason that kernel version was moved to level 5, is either because they're gone back to the old way, or there are known issues with that kernel version. In any case, unless the situation with that kernel is so dire that it could damage your hardware or data, or even put you at a considerable disadvantage, regarding security, then I'd say:

Updating to the same kernel version, but patched, (still 4.4.0) will offer much less a chance of something going wrong. The thing is, installing kernels in Mint is peanuts, even for an inexperienced user. Thanks to Mint's mintupdate tool, you can install and remove kernels very easily. It's one of my favorite and memorable features of Mint. Furthermore, if your computer has any issues, you simply load up a different kernel version at startup, via GRUB, which is that boot menu you have probably seen at least once, at startup, before Linux really loads.

However, because the kernel is so important, being the middle-man between the software and the hardware, if anything does go quite pear-shaped, it could do more damage than can be solved by a simple kernel switch; this is something of which I (and probably the Mint devs) think you should be fully aware -- sort of like a disclaimer.

So, is it safe? It should be, but YMMV.
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