File Roller help is missing in Lubuntu: "Could not display help, the specified location is not supported"

[Dave Kokandy]

In a Lubuntu Vivid daily Live Session test (20150109), I tried to access the Help section in file-roller and got the following error message:

Could not display help
The specified location is not supported

Steps to reproduce
1.Boot Lubuntu Vivid live session on USB
2.Open Accessories > "Archive Manager"
3.In main menu, select "Help" > "Contents" (OR press F1)

Expected results: to access the help section for file-roller.

Actual results: A dialog appears and shows "Could not display help"

Workaround:
Install yelp.

Versions affected: Vivid (Live Session), Vivid (installed)

lsb_release -rd:
Description: Ubuntu Vivid Vervet (development branch)
Release: 15.04

(Actually Lubuntu)

apt-cache policy file-roller:
file-roller:
  Installed: 3.14.2-0ubuntu1
  Candidate: 3.14.2-0ubuntu1
  Version table:
 *** 3.14.2-0ubuntu1 0
        500 http://archive.ubuntu.com/ubuntu/ vivid/main amd64 Packages
        100 /var/lib/dpkg/status

Hardware profile: https://gist.github.com/e4e4d9d3e41ccf5c27c7

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: file-roller 3.14.2-0ubuntu1
ProcVersionSignature: Ubuntu 3.18.0-8.9-generic 3.18.1
Uname: Linux 3.18.0-8-generic x86_64
ApportVersion: 2.15.1-0ubuntu2
Architecture: amd64
CasperVersion: 1.347
CurrentDesktop: LXDE
Date: Sat Jan 10 01:45:39 2015
LiveMediaBuild: Lubuntu 15.04 "Vivid Vervet" - Alpha amd64 (20150109)
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: file-roller
UpgradeStatus: No upgrade log present (probably fresh install)

[Ubuntu QA Website (ubuntuqa)]

This bug has been reported on the Ubuntu ISO testing tracker.

A list of all reports related to this bug can be found here:
http://iso.qa.ubuntu.com/qatracker/reports/bugs/1409185

[Brendan Perrine (walterorlin)]

This help button does not work. This is because it is intended to launch yelp the gnome help tool which is not in lubuntu-desktop. Installing yelp is a workaround that will get help working. Yelp may have been left out for iso size concerns but this workaround should be documented somewhere.

[Dave Kokandy (drkokandy)]

Installing Yelp workaround tested & works.

Installing Yelp included the following packages:

gnome-user-guide libyelp0 yelp yelp-xsl

apt reported this used 46.0 MB of additional disk space.

[Dave Kokandy (drkokandy)]

Actually, this is not just on a live session. This issue also remains on Lubuntu after it's been fully installed on a new computer.

Same workaround - installing yelp - solves this issue.

[Gunnar Hjalmarsson (gunnarhj)]

Language Support (the language-selector-gnome package) is another tool whose help does not open due to the absence of yelp. Same thing: yelp is recommended, not a dependency.

[Tim (darkxst)]

gnome-user-guide would make up the bulk of that 46MB, and that probably wouldnt even be useful on lubuntu.

[Gunnar Hjalmarsson (gunnarhj)]

How about these changes:

- Move gnome-user-guide from recommends to suggests in yelp

- Add gnome-user-guide to recommends in ubuntu-gnome-meta

- Move yelp from recommends to depends in file-roller and language-selector-gnome

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.