I installed a clean Ubuntu Server 22.04 and followed the instructions to install Jenkins, and I see the following:

```

hackeron@tetherjenkins:~$ curl -fsSL https://pkg.jenkins.io/debian-stable/jenkins.io.key | sudo tee \
>   /usr/share/keyrings/jenkins-keyring.asc > /dev/null
[sudo] password for hackeron:
hackeron@tetherjenkins:~$ echo deb [signed-by=/usr/share/keyrings/jenkins-keyring.asc] \
>   https://pkg.jenkins.io/debian-stable binary/ | sudo tee \
>   /etc/apt/sources.list.d/jenkins.list > /dev/null
hackeron@tetherjenkins:~$ sudo apt-get update
Hit:1 http://gb.archive.ubuntu.com/ubuntu focal InRelease
Get:2 http://gb.archive.ubuntu.com/ubuntu focal-updates InRelease [114 kB]
Ign:3 https://pkg.jenkins.io/debian-stable binary/ InRelease
Get:4 https://pkg.jenkins.io/debian-stable binary/ Release [2,044 B]
Get:5 https://pkg.jenkins.io/debian-stable binary/ Release.gpg [833 B]
Get:6 http://gb.archive.ubuntu.com/ubuntu focal-backports InRelease [108 kB]
Get:7 http://gb.archive.ubuntu.com/ubuntu focal-security InRelease [114 kB]
Get:8 http://gb.archive.ubuntu.com/ubuntu focal/main Translation-en_GB [485 kB]
Get:9 http://gb.archive.ubuntu.com/ubuntu focal/restricted Translation-en_GB [3,860 B]
Get:10 http://gb.archive.ubuntu.com/ubuntu focal/universe Translation-en_GB [319 kB]
Get:11 http://gb.archive.ubuntu.com/ubuntu focal/multiverse Translation-en_GB [105 kB]
0% [8 Translation-en_GB store 0 B]
Get:12 http://gb.archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages [1,750 kB]
Get:13 http://gb.archive.ubuntu.com/ubuntu focal-updates/universe amd64 Packages [920 kB]
Get:14 https://pkg.jenkins.io/debian-stable binary/ Packages [21.8 kB]
Get:15 http://gb.archive.ubuntu.com/ubuntu focal-security/main amd64 Packages [1,422 kB]
Get:16 http://gb.archive.ubuntu.com/ubuntu focal-security/universe amd64 Packages [700 kB]
Fetched 6,065 kB in 1s (5,299 kB/s)
Reading package lists... Done
hackeron@tetherjenkins:~$
hackeron@tetherjenkins:~$ sudo apt-get install jenkins
Reading package lists... Done
Building dependency tree
Reading state information... Done

The following additional packages will be installed:
  net-tools
The following NEW packages will be installed:
  jenkins net-tools
0 upgraded, 2 newly installed, 0 to remove and 28 not upgraded.
Need to get 91.5 MB of archives.
After this operation, 95.9 MB of additional disk space will be used.
Get:1 http://gb.archive.ubuntu.com/ubuntu focal/main amd64 net-tools amd64 1.60+git20180626.aebd88e-1ubuntu1 [196 kB]
Get:2 https://pkg.jenkins.io/debian-stable binary/ jenkins 2.332.2 [91.4 MB]
Fetched 91.5 MB in 5s (20.2 MB/s)
Selecting previously unselected package net-tools.
(Reading database ... 71807 files and directories currently installed.)
Preparing to unpack .../net-tools_1.60+git20180626.aebd88e-1ubuntu1_amd64.deb ...
Unpacking net-tools (1.60+git20180626.aebd88e-1ubuntu1) ...
Selecting previously unselected package jenkins.
Preparing to unpack .../jenkins_2.332.2_all.deb ...
Unpacking jenkins (2.332.2) ...
Setting up net-tools (1.60+git20180626.aebd88e-1ubuntu1) ...
Setting up jenkins (2.332.2) ...
Created symlink /etc/systemd/system/multi-user.target.wants/jenkins.service → /lib/systemd/system/jenkins.service.
Job for jenkins.service failed because the control process exited with error code.
See "systemctl status jenkins.service" and "journalctl -xe" for details.
invoke-rc.d: initscript jenkins, action "start" failed.
● jenkins.service - Jenkins Continuous Integration Server
     Loaded: loaded (/lib/systemd/system/jenkins.service; enabled; vendor preset: enabled)
     Active: activating (auto-restart) (Result: exit-code) since Mon 2022-05-02 18:46:47 UTC; 4ms ago
    Process: 2398 ExecStart=/usr/bin/jenkins (code=exited, status=1/FAILURE)
   Main PID: 2398 (code=exited, status=1/FAILURE)

May 02 18:46:47 tetherjenkins systemd[1]: jenkins.service: Main process exited, code=exited, status=1/FAILURE
May 02 18:46:47 tetherjenkins systemd[1]: jenkins.service: Failed with result 'exit-code'.
May 02 18:46:47 tetherjenkins systemd[1]: Failed to start Jenkins Continuous Integration Server.
dpkg: error processing package jenkins (--configure):
 installed jenkins package post-installation script subprocess returned error exit status 1
Processing triggers for man-db (2.9.1-1) ...
Processing triggers for systemd (245.4-4ubuntu3.15) ...
Errors were encountered while processing:
 jenkins
E: Sub-process /usr/bin/dpkg returned an error code (1)

```

I tried also installing 20.04 and got the same results.

There are no useful logs in journalctl or in /var/log/jenkins:

```

hackeron@tetherjenkins:~$ journalctl -u jenkins -f
– Logs begin at Mon 2022-05-02 18:45:52 UTC. –
May 02 18:46:49 tetherjenkins systemd[1]: Starting Jenkins Continuous Integration Server...
May 02 18:46:49 tetherjenkins jenkins[2822]: jenkins: failed to find a valid Java installation
May 02 18:46:49 tetherjenkins systemd[1]: jenkins.service: Main process exited, code=exited, status=1/FAILURE
May 02 18:46:49 tetherjenkins systemd[1]: jenkins.service: Failed with result 'exit-code'.
May 02 18:46:49 tetherjenkins systemd[1]: Failed to start Jenkins Continuous Integration Server.
May 02 18:46:49 tetherjenkins systemd[1]: jenkins.service: Scheduled restart job, restart counter is at 8.
May 02 18:46:49 tetherjenkins systemd[1]: Stopped Jenkins Continuous Integration Server.
May 02 18:46:49 tetherjenkins systemd[1]: jenkins.service: Start request repeated too quickly.
May 02 18:46:49 tetherjenkins systemd[1]: jenkins.service: Failed with result 'exit-code'.
May 02 18:46:49 tetherjenkins systemd[1]: Failed to start Jenkins Continuous Integration Server.

hackeron@tetherjenkins:~$ ls /var/log/jenkins/
hackeron@tetherjenkins:~$

```

Expected result would be for Jenkins to start on a clean Ubuntu Server install or to at least get some log information for next steps.