0

Last week a person created a ubuntu 18.04 LTS in Amazon Cloud (AWS) to match my home Linux. Somehow when I logged into it, I see very different kernel version.

AWS

aws$ cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=18.04
DISTRIB_CODENAME=bionic
DISTRIB_DESCRIPTION="Ubuntu 18.04.6 LTS"

aws$ uname -a
Linux aws 5.4.0-1078-aws #84~18.04.1-Ubuntu SMP Fri Jun 3 12:59:49 UTC 2022

Home

home$ cat /etc/lsb-release
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=18.04
DISTRIB_CODENAME=bionic
DISTRIB_DESCRIPTION="Ubuntu 18.04.2 LTS"

home$ uname -a
Linux home 4.15.0-112-generic #113-Ubuntu SMP Thu Jul 9 23:41:39 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

I can understand if minor version changed due to upgrade, eg, 4.15 vs 4.22. But this is a major version difference: 4 vs 5. Will my binary executable still be portable?

oldpride
  • 103
  • 2

1 Answers1

3

Ubuntu 18.04 LTS using the GA kernel stack uses 4.15, using the HWE kernel stack it is 5.4 (being the GA kernel stack from 20.04).

See https://wiki.ubuntu.com/Kernel/LTSEnablementStack for more details, with other OEM kernel stack options existing too. The installation media used determines the default kernel stack used.

FYI: If your system reports as 18.04.2, you're behind on upgrades though so I'd check that. A fully upgraded system should report as 18.04.6 as your AWS example shows... At 18.04.2 the HWE kernel was 4.18 (being the kernel from 18.10), final HWE kernel for 18.04.5 & later being 5.4 from 20.04..

guiverc
  • 33,561