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

[Brian Murray]

Could you provide some more details about how you use script to run the
release upgrade process? I was able to start a release upgrade using do-
release-upgrade after having started script.

Thinking about it more I think this could be an issue with screen and
your screenrc file. The dist-upgrade process will try to run the upgrade
inside screen and provides its own screen rc file. One way to test this
would be to run 'do-release-upgrade' and then cancel the upgrade
process, then switch to /tmp/ubuntu-release-upgrader-$tempname and run
'sudo ./jammy --disable-gnu-screen'. (Apparently, that argument can't be
passed through from do-release-upgrade.)

Here's part of my script log where things worked:

Script started on 2022-09-13 11:27:06-07:00 [TERM="xterm-256color" TTY="/dev/pts/0" COLUMNS="80" LINES="24"]
^[]0;bdmurray at clean-focal-amd64: ~^G^[[01;32mbdmurray at clean-focal-amd64^[[00m:^[[01;34m~^[[00m$ do-release-upgrade ^M
^[[?2004l^[[?1l^[>^[[?25h^[[>4;m^[[?1049l^[[23;0;0t^[]0;bdmurray at clean-focal-amd64: ~^G^[[01;32mbdmurray at clean-focal-amd64^[[00m:^[[01;34m~^[[00m$ do-release-upgrade ^M
Checking for a new Ubuntu release^M
^M0% [Working]                                                                   ^M0% [Connecting to archive.ubuntu.com]                                          ^M0% [Connecting to archive.ubuntu.com (185.125.190.36)]                         ^M0% [Connected to archive.ubuntu.com (185.125.190.36)]                          ^M0% [Waiting for headers]                                                       ^MGet:1 Upgrade tool signature [819 B]                                           ^M
^M0% [1  0 B/819 B 0%]                                                           ^M99% [Working]                                                                  ^M99% [Waiting for headers]                                                      ^MGet:2 Upgrade tool [1,265 kB]                                                  ^M
^M0% [2  0 B/1,265 kB 0%]                                                        ^M8% [2  111 kB/1,265 kB 8%]                                                     ^M76% [2  968 kB/1,265 kB 76%]                                                   ^M100% [Working]                                                                 ^MFetched 1,266 kB in 0s (0 B/s)                                                 ^M
authenticate 'jammy.tar.gz' against 'jammy.tar.gz.gpg' ^M
extracting 'jammy.tar.gz'^M
^[[!p^[[?3;4l^[[4l^[>^[[?1049h^[[22;0;0t^[[4l^[[?1h^[=^[[0m^[(B^[[1;24r^[[H^[[2J^[[23B^[[7mscreenrc: log: window required^[[27m  ^H^H^M^[[31C^[[1K^[[H^[[H^[[2J
Reading cache^M


** Changed in: ubuntu-release-upgrader (Ubuntu)
   Importance: Undecided => Medium

** Changed in: ubuntu-release-upgrader (Ubuntu)
       Status: New => Incomplete

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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:
  Incomplete

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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