[Bug 1810216] [NEW] Unable to run do-release-upgrade under script(1) because of a need to clear the screen

[Kevin O'Gorman]

Public bug reported:

I like to do system updates under script(1) and have a collection of
bash aliases to do these things and log the script output.  Otherwise
all that stuff scrolls by with no chance for me to use it later.

I just tried to update my system to 18.04, and it failed with the following output:
  Checking for a new Ubuntu release
  Get:1 Upgrade tool signature [819 B]                                                                                                                                                                                                                                          
  Get:2 Upgrade tool [1,263 kB]                                                                                                                                                                                                                                                 
  Fetched 1,264 kB in 0s (0 B/s)                                                                                                                                                                                                                                                
  authenticate 'bionic.tar.gz' against 'bionic.tar.gz.gpg' 
  extracting 'bionic.tar.gz'
  Clear screen capability required.

This seems onerous to me.  What's the point of generating output if
there's no way to learn from it, refer to it, or remember it?

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: ubuntu-release-upgrader-core 1:16.04.26
ProcVersionSignature: Ubuntu 4.4.0-141.167-generic 4.4.162
Uname: Linux 4.4.0-141-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: amd64
CrashDB: ubuntu
Date: Tue Jan  1 14:18:02 2019
InstallationDate: Installed on 2016-08-08 (876 days ago)
InstallationMedia: Xubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
PackageArchitecture: all
SourcePackage: ubuntu-release-upgrader
UpgradeStatus: Upgraded to xenial on 2019-01-01 (0 days ago)

** Affects: ubuntu-release-upgrader (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug dist-upgrade xenial

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https://bugs.launchpad.net/bugs/1810216

Title:
  Unable to run do-release-upgrade under script(1) because of a need to
  clear the screen

Status in ubuntu-release-upgrader package in Ubuntu:
  New

Bug description:
  I like to do system updates under script(1) and have a collection of
  bash aliases to do these things and log the script output.  Otherwise
  all that stuff scrolls by with no chance for me to use it later.

  I just tried to update my system to 18.04, and it failed with the following output:
    Checking for a new Ubuntu release
    Get:1 Upgrade tool signature [819 B]                                                                                                                                                                                                                                          
    Get:2 Upgrade tool [1,263 kB]                                                                                                                                                                                                                                                 
    Fetched 1,264 kB in 0s (0 B/s)                                                                                                                                                                                                                                                
    authenticate 'bionic.tar.gz' against 'bionic.tar.gz.gpg' 
    extracting 'bionic.tar.gz'
    Clear screen capability required.

  This seems onerous to me.  What's the point of generating output if
  there's no way to learn from it, refer to it, or remember it?

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: ubuntu-release-upgrader-core 1:16.04.26
  ProcVersionSignature: Ubuntu 4.4.0-141.167-generic 4.4.162
  Uname: Linux 4.4.0-141-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.20.1-0ubuntu2.18
  Architecture: amd64
  CrashDB: ubuntu
  Date: Tue Jan  1 14:18:02 2019
  InstallationDate: Installed on 2016-08-08 (876 days ago)
  InstallationMedia: Xubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
  PackageArchitecture: all
  SourcePackage: ubuntu-release-upgrader
  UpgradeStatus: Upgraded to xenial on 2019-01-01 (0 days ago)

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