[Qgis-user] QGIS uninstalled after GDAL PPA install
Ismail Sunni
imajimatika at gmail.com
Fri Feb 28 07:57:26 PST 2020
Hi Jimi,
Since I have more or less the same problem, I did like this:
1. Set to use the ubuntu repo in your APT:
deb https://qgis.org/ubuntu bionic main
deb-src https://qgis.org/ubuntu bionic main
2. Try to install QGIS or any packages that you need.
3. If you get the `The following packages have unmet dependencies.`
problem, just remove the package. For example in your case `libgdal20`
(sudo apt remove libgdal20).
4. If the package is not found, try to find the package name, for
example by using `dpkg -l | grep gdal`. Remove the packages.
5. Try again to install your package (from step 2), see if the problem
persists.
In my case, I got this The following packages have unmet dependencies when
I want to install QGIS, then QGIS requirement for building from source. I
got missing saga-common, gdalabi, and libopencv-calib3d3.2.
I did the steps above, and now it works fine.
Basically, what I understand is, there is a problem in the package, so
remove it, and the package manager will re-install it while you are
installing QGIS. CMIIW.
I hope it helps.
Best regards.
On Thu, Feb 27, 2020 at 11:58 PM J. M <jimimckay at gmail.com> wrote:
> Hi there guys,
>
> I think I've done everything that people have suggested, including Andre's
> last suggestion:
> sudo apt-get install libgdal20=2.2.3+dfsg-2, which returned this, similar
> to last time:
>
> sudo apt-get install libgdal20=2.2.3+dfsg-2
> 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.
> libgdal20 : Depends: libogdi3.2 (>= 3.2.0) but it is not going to be
> installed
> E: Unable to correct problems, you have held broken packages.
>
> As I can't get beyond that point I have no idea what else to try, to be
> honest. As Ben suggested I edited the etc file to include this:
> deb https://qgis.org/ubuntu-ltr bionic main, because Ubuntu 18.04 LTS
> doesn't yet support QGIS 3.12. If you can install QGIS and run it, then how
> do you simply remove the entire program and all its dependencies so that
> you can start from scratch? If I run purge X on any other program I think
> my system removes it completely, though I'm not sure.
>
> Fernando Moxo suggested the following, but I've already run sudo apt-get
> autoremove qgis (as QGIS wasn't the last program I installed and I don't
> want this process to randomly erase vital dependencies and leave me with
> half an OS) and there are fewer unmet dependencies now than the first time,
> but I don't know what 'installed prereq.' means, or 'Id those prereq'.
> Sorry, I can't act on that line because I don't understand it.
>
> sudo apt autoremove
>
> Should uninstall all dangling installed prereq. Id those prereq are
> being kept due to some other package requiring them, or some remaining
> from previous Qgis install it can take a bit more effort to fix.
>
>
> I don't know how to erase individual dependencies, so without specific
> commands I wouldn't know where to start. I ran autoremove and I thought it
> took out everything, even dependencies unrelated to QGIS. Out of curiosity,
> are the majority of QGIS users software developers as well? I've never
> experienced this level of technical difficulty associated with the
> installation of a piece of software on Linux before (I've been a dedicated
> Ubuntu user since 12.04 LTS).
>
> Could someone recommend where to start from scratch, and suggest what to
> do step-by-step, so I'm not cluttering up the group email with the same
> queries for ages? I had it working perfectly (albeit briefly) before I
> accidentally installed the ubuntugis-unstable PPA, so I know it's not a
> problem with my OS.
> Many thanks again,
> Jimi.
>
>
>
> On Thu, Feb 27, 2020 at 1:10 PM Fernando M. Roxo da Motta <petro at roxo.org>
> wrote:
>
>> On Wed, 26 Feb 2020 12:33:24 +0800, Ben Hur Pintor <bnhr.dev at gmail.com>
>> wrote:
>>
>>
>> > Hi!
>> >
>> > It looks like your machine is trying to install 3.12.
>>
>> This kind of error usually indicates that 3.12 is already
>> installed. Prossibly a previous install brought in the 3.12 version as
>> a pre-requirement. If that is so, a command like:
>>
>> $ sudo apt autoremove
>>
>> Should uninstall all dangling installed prereq. Id those prereq are
>> being kept due to some other package requiring them, or some remaining
>> from previous Qgis install it can take a bit more effort to fix.
>>
>> Try to remove directly each of those dependencies.
>>
>>
>> HTH
>>
>> >
>> > As I mentioned in the last part of my previous message, right now you
>> > can't install QGIS 3.12 on Ubuntu 18.04 because 3.12 needs PROJ 6.3.1
>> > which currently isn't available in Bionic -- via the main canonical
>> > repo or even with the ubuntugis-unstable PPA. Therefore, I suggest
>> > installing from the LTR branch and not the LR branch. When I use the
>> > LTR branch with ubuntugis dependencies, I get QGIS 3 10.2 no problem.
>> >
>> > I run the same machine as you and actually faced the same problem
>> > when I tried to install the Latest Release (3.12) on Bionic. Try
>> > using the repos for the LTR (the ones with -ltr in the end). Maybe
>> > that will help.
>> >
>> > Don't worry about it, we've all been there.
>> >
>> >
>> > All the best,
>> > Ben Hur
>> >
>> > On Wed, Feb 26, 2020, 07:12 J. M <jimimckay at gmail.com> wrote:
>> >
>> > > Hi Ben,
>> > >
>> > > No joy, I'm afraid. I think I did everything you recommended. I'm
>> > > going to run through it in case I missed something obvious:
>> > >
>> > > - I ran sudo apt remove qgis grass qgis-plugin-grass, then ran
>> > > sudo apt-get update
>> > > - The /etc/apt/sources file contains the correct info because I
>> > > modified it for the last installation
>> > > - I ran autoremove on QGIS and erased over a gigabyte of
>> > > dependencies (which seemed like a *lot*..)
>> > > - I ran sudo apt-key list to check if the ubuntugis-unstable PPA
>> > > was still listed as trusted, and it didn't appear
>> > > - I added the ubuntugis stable PPA as recommended on
>> > > https://trac.osgeo.org/ubuntugis/wiki/UbuntuGISRepository, with
>> > > sudo add-apt-repository ppa:ubuntugis/ppa, and it appeared to
>> > > duplicate your command sudo apt-key adv --keyserver
>> > > keyserver.ubuntu.com --recv-key 51F523511C7028C3. Is that possible
>> > > when they appear to reference two different PPA's?
>> > > - I ran sudo apt-get install qgis qgis-plugin-grass and received
>> > > the following error message, similar to before:
>> > >
>> > > The following packages have unmet dependencies.
>> > > qgis : Depends: gdal-abi-2-2-3
>> > > Depends: libqgis-analysis3.12.0 but it is not going to be
>> > > installed Depends: libqgis-app3.12.0 but it is not going to be
>> > > installed Depends: libqgis-core3.12.0 but it is not going to be
>> > > installed Depends: libqgis-gui3.12.0 but it is not going to be
>> > > installed Depends: python3-qgis (= 1:3.12.0+28bionic) but it is not
>> > > going to be installed
>> > > Depends: qgis-providers (= 1:3.12.0+28bionic) but it is not
>> > > going to be installed
>> > > qgis-plugin-grass : Depends: qgis-provider-grass (=
>> > > 1:3.12.0+28bionic) but it is not going to be installed
>> > > Depends: grass740
>> > > Depends: libqgis-app3.12.0 but it is not going
>> > > to be installed
>> > > Depends: libqgis-core3.12.0 but it is not
>> > > going to be installed
>> > > Depends: libqgis-gui3.12.0 but it is not going
>> > > to be installed
>> > > Depends: libqgisgrass7-3.12.0 but it is not
>> > > going to be installed
>> > > E: Unable to correct problems, you have held broken packages.
>> > >
>> > > I must be missing something. Do I have to open the UI via terminal
>> > > (sudo nautilus) and manually remove every file which makes
>> > > reference to QGIS and ubuntugis-unstable? As formatting my machine
>> > > isn't an option there must be a simple way of completely removing
>> > > the program and its dependencies.. right?!
>> > >
>> > > I don't even know what Gdal is or does, because I can't even get
>> > > started learning QGIS because I'm finding it impossible to have a
>> > > version running for long enough to start with tutorials! Is it to
>> > > allow you to overlay raster info onto GIS projects or something? I
>> > > googled it but the explanation must have been written by a robot
>> > > (no offence intended, to robots I mean). Gdal was the reason I
>> > > installed the ubuntugis-unstable PPA, because Blender gave me the
>> > > helpful error message: Please install gdal to enable raster
>> > > projection support. As my crystal ball was clouded up when I read
>> > > that I came here to bug you guys for help!
>> > >
>> > >
>> > > Thanks again to everyone who has had a go at helping me. Keep those
>> > > ideas coming!!
>> > > Cheers,
>> > > Jimi.
>> > >
>> > > On Tue, Feb 25, 2020 at 11:39 PM J. M <jimimckay at gmail.com> wrote:
>> > >
>> > >> Hi Ben!
>> > >>
>> > >> Thanks a lot for that, really helpful; 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 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
>> > >>>>>>>>
>> > >>>>>>>>
>> > >>>>>>>> _______________________________________________
>> > >>>>>>>> Qgis-user mailing list
>> > >>>>>>>> Qgis-user at lists.osgeo.org
>> > >>>>>>>> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
>> > >>>>>>>> Unsubscribe:
>> > >>>>>>>> https://lists.osgeo.org/mailman/listinfo/qgis-user
>> > >>>>>>>
>> > >>>>>>> _______________________________________________
>> > >>>>>>> Qgis-user mailing list
>> > >>>>>>> Qgis-user at lists.osgeo.org
>> > >>>>>>> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
>> > >>>>>>> Unsubscribe:
>> > >>>>>>> https://lists.osgeo.org/mailman/listinfo/qgis-user
>> > >>>>>>
>> > >>>>>>
>> > >>>>>>
>> > >>>>>> --
>> > >>>>>> Ismail Sunni
>> > >>>>>> Software Engineer
>> > >>>>>> ismailsunni.id
>> > >>>>>> ismailsunni.wordpress.com
>> > >>>>>>
>> > >>>>> _______________________________________________
>> > >>>> Qgis-user mailing list
>> > >>>> Qgis-user at lists.osgeo.org
>> > >>>> List info: https://lists.osgeo.org/mailman/listinfo/qgis-user
>> > >>>> Unsubscribe: https://lists.osgeo.org/mailman/listinfo/qgis-user
>> > >>>
>> > >>>
>>
>>
>>
>>
>>
>>
>>
>>
>> Roxo
>>
>> --
>> ---------------- Non luctari, ludare -------------------+ WYSIWYG
>> Fernando M. Roxo da Motta <petro at roxo.org> | Editor?
>> Except where explicitly stated I speak on my own behalf.| VI !!
>> PU5RXO | I see text,
>> ------------ Quis custodiet ipsos custodes?-------------+ I get text!
>>
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--
Ismail Sunni
Software Engineer
ismailsunni.id
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