do-release-upgrade doesn't notify it is using screen
| Affects | Status | Importance | Assigned to | Milestone | |
|---|---|---|---|---|---|
| ubuntu-release-upgrader (Ubuntu) |
Confirmed
|
Low
|
Unassigned | ||
Bug Description
On Utopic, I just issued this command to upgrade to Vivid beta:
$ sudo do-release-upgrade -d
After just a couple of lines of output, namely:
Checking for a new Ubuntu release
Get:1 Upgrade tool signature [198 B]
Get:2 Upgrade tool [1,209 kB]
Fetched 1,210 kB in 0s (0 B/s)
authenticate 'vivid.tar.gz' against 'vivid.tar.gz.gpg'
extracting 'vivid.tar.gz'
it switched to the terminal's so-called "alternate screen" (escape sequence: \e[?47h or \e[?1047h or \e[?1049h). This is the one that fullscreen apps, e.g. vim, less, mc etc. use, and does not have a scrollback buffer.
For a process that is about to print thousands of lines and is not a fullscreen app, it's a very bad idea to switch to this alternate screen, because I lose the ability to walk back in the scrollback to see what's happened or if there was an error.
Please make sure that the script stays on the default "normal screen" of the terminal, so that the scrollbar can be used for its purpose.
(I'm using gnome-terminal, but it should be irrelevant.)
ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: ubuntu-
ProcVersionSign
Uname: Linux 3.16.0-31-generic x86_64
ApportVersion: 2.14.7-0ubuntu8.2
Architecture: amd64
CrashDB: ubuntu
CurrentDesktop: Unity
Date: Tue Mar 17 14:09:43 2015
InstallationDate: Installed on 2012-05-30 (1020 days ago)
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
PackageArchitec
SourcePackage: ubuntu-
UpgradeStatus: Upgraded to utopic on 2015-03-17 (0 days ago)
| Egmont Koblinger (egmont-gmail) wrote | #1 |
| Egmont Koblinger (egmont-gmail) wrote | #2 |
| summary: |
- do-release-upgrade shouldn't switch to terminal's alternate screen + do-release-upgrade doesn't notify it is using screen |
| Changed in ubuntu-release-upgrader (Ubuntu): | |
| importance: | Undecided → Low |
| Launchpad Janitor (janitor) wrote | #3 |
| Changed in ubuntu-release-upgrader (Ubuntu): | |
| status: | New → Confirmed |
I just realized that this happens because it's automatically run inside "script". Kinda makes sense then, but I guess you should somehow notify the user about it. And screen's scrollback possibilities are quite limited and hard to use. I'd personally prefer to run this script outside of screen, and have the terminal's convenient scrollbar.