[Qgis-user] QGIS uninstalled after GDAL PPA install

[Ismail Sunni]

Hi Jimi,

I have a similar problem. I fix it by reinstalling gdal (libgdal20). I can
install QGIS again after that. But, I am not an expert with this package
manager thing, so perhaps it can work for you also, or perhaps not :)

While trying to fix my problem, I found this
https://askubuntu.com/questions/140246/how-do-i-resolve-unmet-dependencies-after-adding-a-ppa
which
probably useful for you.

Best regards

On Thu, Feb 20, 2020 at 1:22 PM J. M <jimimckay at gmail.com> wrote:

> Hi again Andre,
>
> Thanks for that, I more or less get what you mean. The problem is that
> when I ran autoremove it came back with almost a gig of dependencies it
> wanted to remove, so I cancelled it! QGIS wasn't the last program I
> installed so I have no idea how to purge only the dependencies directly
> related to the previous version of it I was running. If I run autoremove
> and it damages other applications or makes my system unusable then I won't
> be able to fix it (I'm only a user, I've got no background in programming).
> I read around and people warned strongly against doing this unless you're
> sure what you want to remove. How can I be sure I only remove the right
> dependencies? Does QGIS have a list or something I can use as a guide?
>
> If anyone could explain how to use Synaptic package manager then I'd be
> really grateful! It must have the most unintuitive interface of any piece
> of software I've ever tried to use..
>
> I edited the source file last time I installed it, so that part is done.
> Incidentally, I don't see the 'other Software' tab in the Ubuntu Software
> Center, so I just edited it manually. Any idea what that package is called?
> I'm happy enough using the terminal if I know (roughly) what I'm doing!
>
> Thanks a lot team,
> Jimi.
>
> On Wed, Feb 19, 2020 at 8:18 PM Andre Joost <andre+joost at nurfuerspam.de>
> wrote:
>
>> Am 18.02.20 um 23:58 schrieb J. M:
>> > Hi again Andre,
>> >
>> > I don't actually understand what to do with this, because I can't run
>> 'sudo
>> > apt-get install qgis qgis-plugin-grass' as it keeps giving me the same
>> > error messages about broken packages.
>>
>> Yes, because you have packages that are compiled against a set of
>> libraries that does not match your computer. You have to remove,
>> autoremove and purge those QGIS packages to force a download from the
>> right folder.
>>
>>
>> > When you say this, I don't get what this link does. I click on it and it
>> > just takes me into a file hierarchy. Are users supposed to obtain the
>> > downloads from here, or is it purely informative?
>> > Try
>> > deb https://qgis.org/ubuntugis bionic main
>>
>> That should go into your sources list, to replace the QGIS download
>> source you used before. The Ubuntu Software center has a tab for "other
>> Software" that holds the same information, so no need to edit the
>> sources file manually.
>>
>> HTH,
>> Andre Joost
>>
>>
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-- 
Ismail Sunni
Software Engineer
ismailsunni.id
ismailsunni.wordpress.com
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