Public bug reported:

Issue found with 5.4.0-1008.9 Focal GKEOP

The procedure to deploy a F-gkeop system for the test:
1. Deploy a Focal gcp instance
2. Enable proposed, install the linux-gkeop and linux-modules-extra-gkeop 
package (bug 1909232)
3. Modify the grub to make it boot with the 5.4.0-1008.9 gkeop kernel instead 
of the default 5.4.0-1029-gcp kernel

When trying to reboot to this kernel with GRUB default being modified as:
GRUB_DEFAULT="gnulinux-advanced-dc7ce673-d33f-4a3b-bce1-fff7064b9ab4>gnulinux-5.4.0-1008-gkeop-advanced-dc7ce673-d33f-4a3b-bce1-fff7064b9ab4"

It looks like the instance will hang. You won't be able to ssh into it
anymore.

Command "gcloud compute instances list" shows it's still RUNNING

I can't connect to the console to see what's going on there:
  $ gcloud compute connect-to-serial-port  
f-lgkeop-gkeop-5-4-0-e2std2-aio-dio-bugs --zone=us-west1-a
  channel 0: open failed: connect failed: The serial-port-enable metadata 
attribute is not set on this VM. It should be set to 'yes' to enable serial 
port access.
  Connection to ssh-serialport.googleapis.com closed.

This is blocking the Focal GKEOP SRU tests.

** Affects: ubuntu-kernel-tests
     Importance: Undecided
         Status: New

** Affects: linux-gkeop (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: 5.4 focal gkeop kqa-blocker sru-20201130

** Also affects: linux-gkeop (Ubuntu)
   Importance: Undecided
       Status: New

** Description changed:

  Issue found with 5.4.0-1008.9 Focal GKEOP
  
  The procedure to deploy a F-gkeop system for the test:
  1. Deploy a Focal gcp instance
  2. Enable proposed, install the linux-gkeop and linux-modules-extra-gkeop 
package (bug 1909232)
  3. Modify the grub to make it boot with the 5.4.0-1008.9 gkeop kernel instead 
of the default 5.4.0-1029-gcp kernel
  
  When trying to reboot to this kernel with GRUB default being modified as:
  
GRUB_DEFAULT="gnulinux-advanced-dc7ce673-d33f-4a3b-bce1-fff7064b9ab4>gnulinux-5.4.0-1008-gkeop-advanced-dc7ce673-d33f-4a3b-bce1-fff7064b9ab4"
  
  It looks like the instance will hang. You won't be able to ssh into it
  anymore.
  
  Command "gcloud compute instances list" shows it's still RUNNING
  
  I can't connect to the console to see what's going on there:
-   $ gcloud compute connect-to-serial-port  
f-lgkeop-gkeop-5-4-0-e2std2-aio-dio-bugs --zone=us-west1-a 
-   channel 0: open failed: connect failed: The serial-port-enable metadata 
attribute is not set on this VM. It should be set to 'yes' to enable serial 
port access.
-   Connection to ssh-serialport.googleapis.com closed.
+   $ gcloud compute connect-to-serial-port  
f-lgkeop-gkeop-5-4-0-e2std2-aio-dio-bugs --zone=us-west1-a
+   channel 0: open failed: connect failed: The serial-port-enable metadata 
attribute is not set on this VM. It should be set to 'yes' to enable serial 
port access.
+   Connection to ssh-serialport.googleapis.com closed.
+ 
+ This is blocking the Focal GKEOP SRU tests.

** Tags added: 5.4 focal gkeop kqa-blocker sru-20201130

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https://bugs.launchpad.net/bugs/1909316

Title:
  Unable to boot with F-gkeop kernel

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