Public bug reported:

My question is at this link:
https://askubuntu.com/questions/1226885/lenovo-t420s-requires-nomodeset-to-boot-focal-fossa-missing-video-drivers?noredirect=1#comment2063909_1226885
=======================================================================

I have had to uninstall Focal Fossa 20.04 (April 2020) and revert back
to Ubuntu 19.10 on my Lenovo T420s because the laptop was stuck on
purple screen upon `do-release-upgrade`

I used `nomodeset` to boot the machine but there are no drivers for
Lenovo T420s. Here is the result of  `lshw -c video`

```
  *-display                 
       description: VGA compatible controller
       product: 2nd Generation Core Processor Family Integrated Graphics 
Controller
       vendor: Intel Corporation
       physical id: 2
       bus info: pci@0000:00:02.0
       version: 09
       width: 64 bits
       clock: 33MHz
       capabilities: msi pm vga_controller bus_master cap_list rom
       configuration: driver=i915 latency=0
       resources: irq:39 memory:f0000000-f03fffff memory:e0000000-efffffff 
ioport:4000(size=64) memory:c0000-dffff
```
Has anyone tried to install Ubuntu 20.04 yet? If so, did you run into the above 
issue?

** Affects: ubuntu
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1872848

Title:
  Lenovo T420s requires nomodeset to boot Focal Fossa; missing video
  drivers?

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