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[Andreas Hasenack <andreas@xxxxxxxxxxxxx>]

** Changed in: ubuntu-advantage-tools (Ubuntu)
     Assignee: Andreas Hasenack (ahasenack) => (unassigned)

** Changed in: ubuntu-advantage-tools (Ubuntu)
       Status: In Progress => Triaged

** Also affects: ubuntu-advantage-tools (Ubuntu Trusty)
   Importance: Undecided
       Status: New

** Also affects: ubuntu-advantage-tools (Ubuntu Bionic)
   Importance: Undecided
       Status: New

** Also affects: ubuntu-advantage-tools (Ubuntu Xenial)
   Importance: Undecided
       Status: New

** Changed in: ubuntu-advantage-tools (Ubuntu)
    Milestone: ubuntu-16.04.5 => None

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https://bugs.launchpad.net/bugs/1769258

Title:
  Cope with unsupported kernel

Status in ubuntu-advantage-script:
  Fix Released
Status in ubuntu-advantage-tools package in Ubuntu:
  Triaged
Status in ubuntu-advantage-tools source package in Trusty:
  New
Status in ubuntu-advantage-tools source package in Xenial:
  New
Status in ubuntu-advantage-tools source package in Bionic:
  New

Bug description:
  Livepatch now checks for the running kernel and let's the user know if
  it's unsupported. For example:

  ```
  ubuntu@bionic-livepatch:~$ canonical-livepatch enable foo
  2018/05/04 19:55:05 cannot use livepatch: your kernel "4.15.0-1008-kvm" is not eligible for livepatch updates
  ```

  
  `ua status`, however, doesn't interpret that yet and just says that livepatch is disabled:
  ```
  ubuntu@bionic-livepatch:~$ ua status
  esm: disabled (not available)
  fips: disabled (not available)
  livepatch: disabled
  ```

  Furthermore the MOTD component says that livepatch is available for installation, likely because the status output does not say "not available":
  ```
   * Canonical Livepatch is available for installation.
     - Reduce system reboots and improve kernel security. Activate at:
       https://ubuntu.com/livepatch
  ```

  `ua enable-livepatch <foo>` also doesn't check and tries to enable it, but it eventually fails:
  ```
  ubuntu@bionic-livepatch:~$ sudo ua enable-livepatch <token>
  Enabling Livepatch with the given token, stand by...
  2018/05/04 19:57:17 cannot use livepatch: your kernel "4.15.0-1008-kvm" is not eligible for livepatch updates
  ```

  We should:

  - fix the MOTD when running an unsupported kernel. I suggest to output nothing.
  - don't even try to enable livepatch if we are running an unsupported kernel

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