[Bug 1915453] [NEW] Installation of Ubuntu MATE 20.04.2.0 20210209.1 ends with busybox prompt, system is broken

[Norbert]

Public bug reported:

Steps to reproduce:
1. Obtain latest ISO ( SHA256SUM = ec85f45a8d9f68cd9e9522471621079d2de0d597cd6ec63d29f3986929f920d3 , [Ubuntu-MATE 20.04.2.0 LTS _Focal Fossa_ - Release amd64 (20210209.1)] )
2. Install it
3. Reboot the system

Expected results:
system boots normally

Actual results:
system does not boot shows only "(initramfs)" prompt

Logs from non-booting system are attached.

The hardware is Lenovo SL500:

Base Board Information
 Manufacturer: LENOVO
 Product Name: 27463ZG
 Version: LENOVO 6AET64WW

** Affects: ubuntu-mate
     Importance: Undecided
         Status: New

** Affects: ubiquity (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: 20.04.2.0 focal

** Attachment added: "logs"
   https://bugs.launchpad.net/bugs/1915453/+attachment/5462769/+files/logs.tar.gz

** Also affects: ubuntu-mate
   Importance: Undecided
       Status: New

** Description changed:

  Steps to reproduce:
- 1. Obtain latest ISO ( [Ubuntu-MATE 20.04.2.0 LTS _Focal Fossa_ - Release amd64 (20210209.1)] )
+ 1. Obtain latest ISO ( SHA256SUM = ec85f45a8d9f68cd9e9522471621079d2de0d597cd6ec63d29f3986929f920d3 , [Ubuntu-MATE 20.04.2.0 LTS _Focal Fossa_ - Release amd64 (20210209.1)] )
  2. Install it
  3. Reboot the system
  
  Expected results:
  system boots normally
  
  Actual results:
  system does not boot shows only "(initramfs)" prompt
  
- 
  Logs from non-booting system are attached.
  
  The hardware is Lenovo SL500:
  
  Base Board Information
- 	Manufacturer: LENOVO                       
- 	Product Name: 27463ZG   
- 	Version: LENOVO 6AET64WW
+  Manufacturer: LENOVO
+  Product Name: 27463ZG
+  Version: LENOVO 6AET64WW

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https://bugs.launchpad.net/bugs/1915453

Title:
  Installation of Ubuntu MATE 20.04.2.0 20210209.1 ends with busybox
  prompt, system is broken

Status in Ubuntu MATE:
  New
Status in ubiquity package in Ubuntu:
  New

Bug description:
  Steps to reproduce:
  1. Obtain latest ISO ( SHA256SUM = ec85f45a8d9f68cd9e9522471621079d2de0d597cd6ec63d29f3986929f920d3 , [Ubuntu-MATE 20.04.2.0 LTS _Focal Fossa_ - Release amd64 (20210209.1)] )
  2. Install it
  3. Reboot the system

  Expected results:
  system boots normally

  Actual results:
  system does not boot shows only "(initramfs)" prompt

  Logs from non-booting system are attached.

  The hardware is Lenovo SL500:

  Base Board Information
   Manufacturer: LENOVO
   Product Name: 27463ZG
   Version: LENOVO 6AET64WW

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