[Qgis-user] QGIS uninstalled after GDAL PPA install

Tue Feb 25 14:38:01 PST 2020

Hi Ben!

Sorry, that sent accidentally. I'll give it a go. It was actually the
ubuntugis unstable PPA which caused the current problem I'm having, so I'm
keen to avoid that PPA if I can. I'll try your steps again and let you know
what the outcome is.

Cheers,
Jimi.

On Tue, Feb 25, 2020 at 11:35 PM J. M <jimimckay at gmail.com> wrote:

> Hi Ben!
>
> Thanks a lot for that, really helpful. Andre explained that the last time
> I had a problem with the installation
>
> On Tue, Feb 25, 2020 at 4:44 AM Ben Hur Pintor <bnhr.dev at gmail.com> wrote:
>
>> Hi!
>>
>> First of all, make sure that you add the qgis.org repo public key
>> via sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-key
>> 51F523511C7028C3. Make sure that the library versions in your computer
>> (specially GDAL and PROJ) are the same libraries that QGIS is built against.
>>
>> The links in
>> https://www.qgis.org/en/site/forusers/alldownloads.html#debian-ubuntu determine
>> which versions of QGIS will be installed. You add these as sources in the
>> Software Center or you can add them directly in your /etc/apt/sources.list
>> file as instructed in
>> https://qgis.org/en/site/forusers/alldownloads.html#debian-ubuntu.
>> If you want 3.12 (Latest Release), you can use/add the following in your
>> /etc/apt/sources.list file https://qgis.org/ubuntu or
>> https://qgis.org/ubuntugis (if with ubuntugis-unstable dependencies).
>> If you want the LTR branch (3.10.3), simply use
>> https://qgis.org/ubuntu-ltr or https://qgis.org/ubuntugis-ltr (if with
>> ubuntugis-unstable dependencies) in your /etc/apt/sources.list file.
>>
>> Also, don't forget to remove/purge all previous QGIS or GRASS
>> installations (e.g. sudo apt remove qgis grass qgis-plugin-grass) and do an
>> update (sudo apt update) before trying to install QGIS again.
>>
>> I run Pop! OS 18.04 (based on Ubuntu 18.04). Unfortunately, the libraries
>> in the main (universe) repo of Bionic are a bit outdated (GDAL 2.2.3, PROJ
>> 4.9, etc.). The newer versions of QGIS use GDAL 3.0.X and PROJ 6.X. Using
>> the ubuntugis-unstable (
>> https://launchpad.net/~ubuntugis/+archive/ubuntu/ubuntugis-unstable) PPA
>> remedies the problem of some outdated libraries. If you will use the
>> ubuntugis-unstable libraries, don't forget to add the PPA to your sources
>> as well. On another note, PROJ 6.3.1, which QGIS 3.10.3 and 3.12 use, isn't
>> available yet in Bionic even when using the ubuntugis PPA so even if I
>> want, I can only install 3.10.2 right now on my machine. Trying to install
>> 3.12 via the ubuntu or ubuntugis repo fails.
>>
>>
>> All the best,
>> Ben Hur
>>
>> On Tue, Feb 25, 2020, 07:25 J. M <jimimckay at gmail.com> wrote:
>>
>>> Hi Ismail,
>>>
>>> Well, I've tried everything I can think of, everything people have
>>> recommended and everything I've googled, but there seems to be no earthly
>>> way to get rid of the following error messages:
>>>
>>> sudo apt-get install qgis qgis-plugin-grass
>>> Reading package lists... Done
>>> Building dependency tree
>>> Reading state information... Done
>>> Some packages could not be installed. This may mean that you have
>>> requested an impossible situation or if you are using the unstable
>>> distribution that some required packages have not yet been created
>>> or been moved out of Incoming.
>>> The following information may help to resolve the situation:
>>>
>>> The following packages have unmet dependencies.
>>>  qgis : Depends: python3-qgis (= 1:3.12.0+28bionic) but it is not going
>>> to be installed
>>> E: Unable to correct problems, you have held broken packages.
>>>
>>> I've tried this:
>>>
>>> sudo apt-get purge qgis
>>> sudo apt-get autoremove qgis
>>> sudo apt-get --purge remove qgis
>>> sudo apt-get update
>>>
>>>  but it returned the following:
>>>
>>> sudo apt-get update
>>>
>>>
>>> Hit:6 http://qgis.org/debian bionic InRelease
>>>
>>>   The following signatures couldn't be verified because the public key
>>> is not available: NO_PUBKEY 76F1A20FF987672F
>>> Hit:18 http://ppa.launchpad.net/ubuntugis/ubuntugis-unstable/ubuntu
>>> bionic InRelease
>>> Err:18 http://ppa.launchpad.net/ubuntugis/ubuntugis-unstable/ubuntu
>>> bionic InRelease
>>>   The following signatures couldn't be verified because the public key
>>> is not available: NO_PUBKEY 089EBE08314DF160
>>> Reading package lists... Done
>>> W: GPG error: https://dl.winehq.org/wine-builds/ubuntu bionic
>>> InRelease: The following signatures couldn't be verified because the public
>>> key is not available: NO_PUBKEY 76F1A20FF987672F
>>> E: The repository 'https://dl.winehq.org/wine-builds/ubuntu bionic
>>> InRelease' is not signed.
>>> N: Updating from such a repository can't be done securely, and is
>>> therefore disabled by default.
>>> N: See apt-secure(8) manpage for repository creation and user
>>> configuration details.
>>> W: An error occurred during the signature verification. The repository
>>> is not updated and the previous index files will be used. GPG error:
>>> http://ppa.launchpad.net/ubuntugis/ubuntugis-unstable/ubuntu bionic
>>> InRelease: The following signatures couldn't be verified because the public
>>> key is not available: NO_PUBKEY 089EBE08314DF160
>>>
>>>
>>> I can't think of anything else. Any suggestions about what I might be
>>> doing wrong? I don't actually understand what this link is for:
>>> https://www.qgis.org/en/site/forusers/alldownloads.html#debian-ubuntu
>>> If you download via the terminal by typing 'sudo apt-get install qgis'
>>> then how do you make use of all the folders in this link? I mean, how do I
>>> differentiate if I want to download version 3.10 or 3.12 of QGIS?
>>>
>>> Sorry team, I just can't get this to work and I'm worried I do
>>> irreparable damage to my system with this process.
>>> Please help me out, guys!
>>> Cheers,
>>> Jimi.
>>>
>>>
>>>
>>> On Mon, Feb 24, 2020 at 6:58 PM J. M <jimimckay at gmail.com> wrote:
>>>
>>>> Hi Ismail!
>>>>
>>>> Many thanks for your advice; I'll check it out. I haven't actually had
>>>> a chance to sit down and try to purge QGIS and start again. Andre was
>>>> trying to help me but I wasn't sure where to start so I haven't tried since
>>>> I last inquired about the process!
>>>>
>>>> Thanks a lot,
>>>> Jimi.
>>>>
>>>> On Sun, Feb 23, 2020 at 8:59 AM Ismail Sunni <imajimatika at gmail.com>
>>>> wrote:
>>>>
>>>>> 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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>>
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