openjdk team mailing list archive

[Aere Greenway <1574879@xxxxxxxxxxxxxxxxxx>]

Tiago:

I checked the apt configuration (as you requested) on two Ubuntu 16.04 
systems (Ubuntu-Gnome, and Kubuntu).

It showed:

APT::Install-Recommends "true";

I also checked the apt configuration on an Ubuntu 15.10 system 
(Ubuntu-MATE), and it showed:

APT::Install-Recommends "1";

All of these systems are test systems, installed from a live DVD (or 
USB) desktop.  There is no custom configuration of APT.

One thing to note, however, is that the installations where "Recommends" 
dependencies stopped taking place as of Ubuntu 15.10 (and continuing 
with Ubuntu 16.04) were done using either the Gdebi Package Installer, 
or Ubuntu Software Center.

Since my application (installed as a Debian package) is not in the 
repository, it has to be installed that way.

So perhaps they changed Gdebi and Ubuntu Software Center to no longer 
install "Recommends" dependencies.

The newer Gnome Software installer (in Ubuntu 16.04) doesn't yet succeed 
in installing external Debian packages.

- Aere


On 04/26/2016 09:44 AM, Tiago Stürmer Daitx wrote:
> Please check your apt configuration by running:
>
> $ apt-config dump | grep Recommends
> APT::Install-Recommends "1";
>
> "1" indicates that recommends is activated and they should be
> installed by default. If recommends is disabled then double check the
> apt configuration files at /etc/apt/apt.conf.d (or maybe a custom
> /etc/apt/apt.conf).
>
> On Tue, Apr 26, 2016 at 12:25 PM, Aere Greenway
> <1574879@xxxxxxxxxxxxxxxxxx> wrote:
>> On 04/26/2016 08:19 AM, Tiago Stürmer Daitx wrote:
>>> I made a mistake: gnome_url_show is actually in libgnome-2-0 package,
>>> not gvfs-libs. Please make sure it is installed.
>>>
>>> Still, after taking another look it is weird that your system didn't have gvfs-libs installed. The dependency cycle is:
>>> * OpenJDK 7 and 8 "Recommends" libgnome2-0
>>> * libgnome2-0 "Recommends" gvfs
>>> * gfvs depends on gfvs-libs
>>>
>>> By default packages in "Recommends" are installed together with the
>>> other package dependencies. Given that you didn't have gvfs-libs I would
>>> to assume that libgnome2-0 didn't get installed as well.
>>>
>>> BTW, there were no changes between OpenJDK 7 and OpenJDK 8 regarding
>>> this functionality: both depend upon gnome_url_show symbol being
>>> available in a library in the system. Thus something changed between
>>> Kubuntu 15.10 and 16.04 that is not satisfying this dependency any
>>> longer.
>>>
>> Thank you for the additional idea to try.  I will report back on that
>> shortly.
>>
>>   From my work with the application I developed (the KeyMusician
>> Keyboard), and its Debian package), as of the Ubuntu 15.10 release, only
>> required dependencies are now installed.  Before then, "Recommends"
>> dependencies were installed, which I wish it still did.
>>
>> To overcome this change, I had to create some dummy packages that
>> included the "Recommends" dependencies as required dependencies of the
>> dummy package.  I also created a dummy package that had the "Recommends"
>> and "Suggests" packages as required dependencies, and the user had to
>> install one or the other of those additional dummy packages.
>>
>> I don't know why that changed in Ubuntu 15.10 - perhaps it has something
>> to do with the snappy package support.
>>
>> --
>> Sincerely,
>> Aere
>>
>> --
>> You received this bug notification because you are a member of OpenJDK,
>> which is subscribed to openjdk-8 in Ubuntu.
>> https://bugs.launchpad.net/bugs/1574879
>>
>> Title:
>>    Java Desktop.browse not supported on Kubuntu 16.04
>>
>> Status in openjdk-8 package in Ubuntu:
>>    New
>>
>> Bug description:
>>    The Desktop.browse functionality of Java is not supported on the
>>    Kubuntu 16.04 level of the KDE desktop.  It was supported in earlier
>>    levels.
>>
>>    With this support no longer available, a Java application can no
>>    longer activate the system's browser to display the already-installed
>>    HTML help files for the application, making the context-sensitive help
>>    functionality useless.
>>
>>    Here is the Java code snippet where the code attempts to activate the
>>    online help:
>>
>>            if (Desktop.isDesktopSupported())
>>            {
>>                Desktop desktop = Desktop.getDesktop() ;
>>                if (desktop.isSupported(Desktop.Action.BROWSE))
>>                {
>>                    try
>>                    {
>>                        desktop.browse(new URI(url)) ;
>>                    }
>>                    catch (Exception e)
>>                    {
>>                        String error = "Problem creating URI to access documentation:\n" + e.getMessage() ;
>>                        reportError(error, true) ;
>>                    }
>>                }
>>                else
>>                    reportError("Desktop.browse not supported on this system.", true) ;
>>            }
>>
>>    When this code is executed, the "Desktop.browse not supported on this
>>    system." error message is displayed, rather than activating the user's
>>    Internet browser to display the HTML help file already installed in
>>    the user's file-system.
>>
>>    In prior releases of Kubuntu, this has always worked.  I expected it
>>    to work on 16.04 (as it does on the other 'flavors' of Ubuntu 16.04),
>>    but it is not supported in the KDE desktop of Kubuntu 16.04
>>
>>    I am using Kubuntu 16.04.
>>
>>    In prior releases of Kubuntu, the online help information was
>>    displayed using the system's Internet browser, which was what I
>>    expected to happen.
>>
>>    In this release, I instead got the "Desktop.browse not supported on
>>    this system." error message, and the Internet browser was not
>>    activated to display the already-installed (via Debian package) help
>>    information.
>>
>>    ProblemType: Bug
>>    DistroRelease: Ubuntu 16.04
>>    Package: openjdk-8-jre 8u77-b03-3ubuntu3
>>    ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
>>    Uname: Linux 4.4.0-21-generic x86_64
>>    ApportVersion: 2.20.1-0ubuntu2
>>    Architecture: amd64
>>    CurrentDesktop: KDE
>>    Date: Mon Apr 25 16:12:50 2016
>>    InstallationDate: Installed on 2016-04-22 (3 days ago)
>>    InstallationMedia: Kubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
>>    SourcePackage: openjdk-8
>>    UpgradeStatus: No upgrade log present (probably fresh install)
>>
>> To manage notifications about this bug go to:
>> https://bugs.launchpad.net/ubuntu/+source/openjdk-8/+bug/1574879/+subscriptions
>>
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>


-- 
Sincerely,
Aere

-- 
You received this bug notification because you are a member of OpenJDK,
which is subscribed to openjdk-8 in Ubuntu.
https://bugs.launchpad.net/bugs/1574879

Title:
  Java Desktop.browse not supported on Kubuntu 16.04

Status in openjdk-8 package in Ubuntu:
  New

Bug description:
  The Desktop.browse functionality of Java is not supported on the
  Kubuntu 16.04 level of the KDE desktop.  It was supported in earlier
  levels.

  With this support no longer available, a Java application can no
  longer activate the system's browser to display the already-installed
  HTML help files for the application, making the context-sensitive help
  functionality useless.

  Here is the Java code snippet where the code attempts to activate the
  online help:

          if (Desktop.isDesktopSupported())
          {
              Desktop desktop = Desktop.getDesktop() ;
              if (desktop.isSupported(Desktop.Action.BROWSE))
              {
                  try
                  {
                      desktop.browse(new URI(url)) ;
                  }
                  catch (Exception e)
                  {
                      String error = "Problem creating URI to access documentation:\n" + e.getMessage() ;
                      reportError(error, true) ;
                  }
              }
              else
                  reportError("Desktop.browse not supported on this system.", true) ;
          }

  When this code is executed, the "Desktop.browse not supported on this
  system." error message is displayed, rather than activating the user's
  Internet browser to display the HTML help file already installed in
  the user's file-system.

  In prior releases of Kubuntu, this has always worked.  I expected it
  to work on 16.04 (as it does on the other 'flavors' of Ubuntu 16.04),
  but it is not supported in the KDE desktop of Kubuntu 16.04

  I am using Kubuntu 16.04.

  In prior releases of Kubuntu, the online help information was
  displayed using the system's Internet browser, which was what I
  expected to happen.

  In this release, I instead got the "Desktop.browse not supported on
  this system." error message, and the Internet browser was not
  activated to display the already-installed (via Debian package) help
  information.

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: openjdk-8-jre 8u77-b03-3ubuntu3
  ProcVersionSignature: Ubuntu 4.4.0-21.37-generic 4.4.6
  Uname: Linux 4.4.0-21-generic x86_64
  ApportVersion: 2.20.1-0ubuntu2
  Architecture: amd64
  CurrentDesktop: KDE
  Date: Mon Apr 25 16:12:50 2016
  InstallationDate: Installed on 2016-04-22 (3 days ago)
  InstallationMedia: Kubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
  SourcePackage: openjdk-8
  UpgradeStatus: No upgrade log present (probably fresh install)

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/openjdk-8/+bug/1574879/+subscriptions