systemd dependancies fail with latest 18.04 kernel update

[Aaron Rainbolt]

On Tue, May 31, 2022 at 5:43 PM Nataraj <incoming-ubuntu at rjl.com> wrote:
>
> On 5/31/22 12:20 PM, Aaron Rainbolt wrote:
>
> On Tue, May 31, 2022 at 4:35 AM Liam Proven <lproven at gmail.com> wrote:
>
> On Tue, 31 May 2022 at 10:33, Nataraj <incoming-ubuntu at rjl.com> wrote:
>
> These problems are on a desktop install of 18.04 on  a Dell xps 13 9360..
>
> That is a very old version now and near EOL.
>
>  Systemd dependencies fail causing the system to boot into emergency mode when I update the kernel to vmlinuz-4.15.0-180-generic.
>
> OK. Where did you get this kernel from? How did you install it?
>
> It's a very new kernel for a 4YO version of Ubuntu.
>
> If you need a newer kernel, it's time to update. You are 2 whole LTS
> versions behind. If you are willing to upgrade bits of the OS, such as
> the kernel, then why not update the whole thing?
>
> He's probably on the HWE kernel, if I were to guess. In fact, that may
> be part of the problem - I've had hardware just stop working after a
> kernel update while on the HWE kernel, and while I didn't try
> switching to the standard kernel (didn't know about it at the time), I
> bet it would have fixed the problem.
>
>
> I thank everyone for their input.  As I mentioned in a previous post, to the best of my knowledge I am running the currently released default kernel from updates/main or security/main repository.  Unless there's something I don't understand, I have not done anything to install a non-default kernel.  See below.
>
> :/etc/apt# apt-cache policy linux-image-4.15.0-180-generic
> linux-image-4.15.0-180-generic:
>   Installed: 4.15.0-180.189
>   Candidate: 4.15.0-180.189
>   Version table:
>  *** 4.15.0-180.189 500
>         500 http://mirrors.namecheap.com/ubuntu bionic-updates/main amd64 Packages
>         500 http://mirrors.namecheap.com/ubuntu bionic-security/main amd64 Packages
>         100 /var/lib/dpkg/status
>
> Here's my /etc/apt/sources.list minus the comments...
>
> /etc/apt# cat sources.list | egrep -v '^#'
>
> deb http://mirrors.namecheap.com/ubuntu/ bionic main restricted
> deb http://mirrors.namecheap.com/ubuntu/ bionic-updates main restricted
> deb http://mirrors.namecheap.com/ubuntu/ bionic universe
> deb http://mirrors.namecheap.com/ubuntu/ bionic-updates universe
> deb http://mirrors.namecheap.com/ubuntu/ bionic multiverse
> deb http://mirrors.namecheap.com/ubuntu/ bionic-updates multiverse
> deb http://mirrors.namecheap.com/ubuntu/ bionic-backports main restricted universe multiverse
> deb http://mirrors.namecheap.com/ubuntu/ bionic-security main restricted
> deb http://mirrors.namecheap.com/ubuntu/ bionic-security universe
> deb http://mirrors.namecheap.com/ubuntu/ bionic-security multiverse

You're right, you're on the standard kernel, no weird mods.

Looking at the data you've given, this looks like the culprit:
"systemd[1]: dev-mapper-vg_myhostname\x2dmyfs1.device: Job
dev-mapper-vg_myhostname\x2dmyfs1.device/start timed out." Not sure
how to fix it, but that's what I think is causing everything else to
go haywire.