I have Qt Creator 2.4 installed from package manager, but version 4.8 is out now, and I want to try it. How to properly update to the lastest version, should I download and install it manually?
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How to install qt 4.8 and QtCreator from repository ?
123188
The alpha channel launch page says there is version 1.0.1.84 to install but actually installs 1.0.1.83 resulting in the app asking to update again.  Can't use alpha app as result.
83187
I'd like to know how I would build Unity from source code in the current development release. Please cover the following topics:   Which packages are needed to compile Unity? Where would I get the current source code? What are the steps to actually configure and compile Unity? Is it possible to safely run the latest version alongside the version from the repositories?
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I am trying to upgrade to a new Ubuntu version but the update manager does not recognize an update. Why not?
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I just installed a new version of Ubuntu and I want to roll it back to the previous version.  How can I do that? Is that even possible?
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I just added a PPA repository for the development version of the GIMP, but I get this error:  $ apt-get update &amp;&amp; apt-get upgrade ... The following packages have been kept back:   gimp gimp-data libgegl-0.0-0 libgimp2.0   Why and how can I solve it so that I can use the latest version instead of the one I have now?
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There are now errors when updating and I cannot install most software due to a corrupted  /etc/apt/sources.list   file. Is there a copy I can download to replace it?  The file would be for Ubuntu 12.04 (Final Beta) in the United States.
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I've installed the Ubuntu QML Toolkit Preview as per the instructions on  (with a minor fiddle to get it working on 12.04).  I'm trying to write an app that plays a sound file.  Aparrently you can do this using QtMultiMediakit in QtQuick 1, but not in QtQuick 2 as used by the toolkit.  Is it possible to write an app using the toolkit that plays sound?
81990
I've been trying to get , but it's only available through Quantal, and I'm running Raring. Is there a way to force-install a PPA from a previous release? I tried manually downloading all the packages and running sudo dpkg -i but I get lots of errors about dependencies, some of which don't look like they can be resolved. Am I stuck with having to compile vim myself?
21148
I use a chess application called &quot;Lucaschess&quot; and it needs PyQt4 module to work. Is it possible to install Pyqt4 on Ubuntu 20.04? I understand that Ubuntu no longer supports this package but is there anyway which I can work around?
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^^^^ Will Ubuntu GNOME upgrade to Ubuntu 18.04, or will support discontinue when 18.04 is released?? Just want to know what's better to run right now so I can upgrade and not have to reinstall later(I intend to see this transition through)-- GNOME installed correctly on vanilla Ubuntu, or Ubuntu GNOME?
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I am relatively new to Linux, so can you indicate the exact commands (step-by-step) that I need to type to get the latest QGIS installed on Ubuntu 14.04.  I have tried to follow the instructions provided here  but I haven't managed to install anything.  Can someone explain to me step by step process of doing it. Right from adding the QGIS repository on the sources list.  I have Ubuntu 14.04.1 LTS installed on a 32-bit Dell Latitude E4310 Machine
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After following the  on the  page, everything seems just fine.  All the Ubuntu specific stuff is there, but when I try to create a new project using the Qt Quick 2 UI template, it's just missing. There are almost no templates available.  I'm on Ubuntu 12.10 64-bit, clean install.    This is how my New File or Project dialog looks like.
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How can I safely upgrade an Ubuntu installation from one release to another? What should I do before upgrading to ensure it goes smoothly, and is there any clean-up I need to do afterwards?  In particular, do I need to do anything special if I am using packages from PPAs, if I have a graphics card that needs drivers, or if I'm running a custom Linux kernel?  This is a general question , but as example we take Ubuntu 12.04 and Ubuntu 12.10
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I can't find any documentation on upgrading 16.04 to 16.04.1.  I'm assuming having all the package updates does it, but Details is still reporting 16.04 and there is still a 'developer options' tab in Software &amp; Updates, implying I'm still in some experimental release.
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The  package was recently updated to fix a . The package is updated on CTAN, but because TeX Live is in its "freeze" period, attempting to update the package via tlmgr update does not work. I do not consider it an acceptable solution to wait until the freeze period is over. How can I install the most recent version?
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I tried to install qt5-default but the package was not found. Of course, I read  and added universe to the apt and done a apt update. I think qt5-default is not in 21.04 yet as it says  so how can I install, i need it.