<div dir="auto"><font face="sans-serif">Hi! </font><div dir="auto"><font face="sans-serif"><br></font></div><div dir="auto"><font face="sans-serif">It looks like your machine is trying to install 3.12.<br></font><div dir="auto" style="font-family:sans-serif"><br></div><div dir="auto" style="font-family:sans-serif">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.</div><div dir="auto" style="font-family:sans-serif"><br></div><div dir="auto" style="font-family:sans-serif">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.</div><div dir="auto" style="font-family:sans-serif"><br></div><div dir="auto" style="font-family:sans-serif">Don't worry about it, we've all been there.</div><div dir="auto" style="font-family:sans-serif"><br></div><div dir="auto" style="font-family:sans-serif"><br></div><div dir="auto" style="font-family:sans-serif">All the best,</div><div dir="auto" style="font-family:sans-serif">Ben Hur</div></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Feb 26, 2020, 07:12 J. M <<a href="mailto:jimimckay@gmail.com">jimimckay@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Hi Ben,<div><br></div><div>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:</div><div><ul><li>I ran <font face="monospace">sudo apt remove qgis grass qgis-plugin-grass</font>, then ran <font face="monospace">sudo apt-get update</font></li><li>The <font face="monospace">/etc/apt/sources</font> file contains the correct info because I modified it for the last installation<br></li><li>I ran <font face="monospace">autoremove</font> on QGIS and erased over a gigabyte of dependencies (which seemed like a <i><b>lot</b></i>..)</li><li>I ran <font face="monospace">sudo apt-key list</font> to check if the <font face="monospace">ubuntugis-unstable PPA</font> was still listed as trusted, and it didn't appear</li><li>I added the ubuntugis stable PPA as recommended on <a href="https://trac.osgeo.org/ubuntugis/wiki/UbuntuGISRepository" target="_blank" rel="noreferrer">https://trac.osgeo.org/ubuntugis/wiki/UbuntuGISRepository</a>, with <font face="monospace">sudo add-apt-repository ppa:ubuntugis/ppa</font>, and it appeared to duplicate your command sudo apt-key adv --keyserver <a href="http://keyserver.ubuntu.com/" target="_blank" rel="noreferrer">keyserver.ubuntu.com</a> --recv-key 51F523511C7028C3. Is that possible when they appear to reference two different PPA's?</li><li>I ran <font face="monospace">sudo apt-get install qgis qgis-plugin-grass</font> and received the following error message, similar to before:</li></ul><div><font face="monospace">The following packages have unmet dependencies.<br> qgis : Depends: gdal-abi-2-2-3<br> Depends: libqgis-analysis3.12.0 but it is not going to be installed<br> Depends: libqgis-app3.12.0 but it is not going to be installed<br> Depends: libqgis-core3.12.0 but it is not going to be installed<br> Depends: libqgis-gui3.12.0 but it is not going to be installed<br> Depends: python3-qgis (= 1:3.12.0+28bionic) but it is not going to be installed<br> Depends: qgis-providers (= 1:3.12.0+28bionic) but it is not going to be installed<br> qgis-plugin-grass : Depends: qgis-provider-grass (= 1:3.12.0+28bionic) but it is not going to be installed<br> Depends: grass740<br> Depends: libqgis-app3.12.0 but it is not going to be installed<br> Depends: libqgis-core3.12.0 but it is not going to be installed<br> Depends: libqgis-gui3.12.0 but it is not going to be installed<br> Depends: libqgisgrass7-3.12.0 but it is not going to be installed<br>E: Unable to correct problems, you have held broken packages.</font><br></div></div><div><br></div><div>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?!</div><div><br></div><div>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: <font face="monospace">Please install gdal to enable raster projection support</font>. As my crystal ball was clouded up when I read that I came here to bug you guys for help!</div><div><br></div><div><br></div><div>Thanks again to everyone who has had a go at helping me. Keep those ideas coming!!</div><div>Cheers,</div><div>Jimi.</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Feb 25, 2020 at 11:39 PM J. M <<a href="mailto:jimimckay@gmail.com" target="_blank" rel="noreferrer">jimimckay@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Hi Ben!<div><br></div><div>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.</div><div><br></div><div>Cheers,</div><div>Jimi.</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Feb 25, 2020 at 4:44 AM Ben Hur Pintor <<a href="mailto:bnhr.dev@gmail.com" target="_blank" rel="noreferrer">bnhr.dev@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Hi!<div><br></div><div>First of all, make sure that you add the <a href="http://qgis.org" target="_blank" rel="noreferrer">qgis.org</a> repo public key via sudo apt-key adv --keyserver <a href="http://keyserver.ubuntu.com" target="_blank" rel="noreferrer">keyserver.ubuntu.com</a> --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.</div><div><br></div><div>The links in <a href="https://www.qgis.org/en/site/forusers/alldownloads.html#debian-ubuntu" target="_blank" rel="noreferrer">https://www.qgis.org/en/site/forusers/alldownloads.html#debian-ubuntu</a> 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 <a href="https://qgis.org/en/site/forusers/alldownloads.html#debian-ubuntu" target="_blank" rel="noreferrer">https://qgis.org/en/site/forusers/alldownloads.html#debian-ubuntu</a>.</div><div>If you want 3.12 (Latest Release), you can use/add the following in your /etc/apt/sources.list file <a href="https://qgis.org/ubuntu" target="_blank" rel="noreferrer">https://qgis.org/ubuntu</a> or <a href="https://qgis.org/ubuntugis" target="_blank" rel="noreferrer">https://qgis.org/ubuntugis</a> (if with ubuntugis-unstable dependencies).</div><div>If you want the LTR branch (3.10.3), simply use <a href="https://qgis.org/ubuntu-ltr" target="_blank" rel="noreferrer">https://qgis.org/ubuntu-ltr</a> or <a href="https://qgis.org/ubuntugis-ltr" target="_blank" rel="noreferrer">https://qgis.org/ubuntugis-ltr</a> (if with ubuntugis-unstable dependencies) in your /etc/apt/sources.list file.</div><div><br></div><div><div>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.</div></div><div><br></div><div>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 (<a href="https://launchpad.net/~ubuntugis/+archive/ubuntu/ubuntugis-unstable" target="_blank" rel="noreferrer">https://launchpad.net/~ubuntugis/+archive/ubuntu/ubuntugis-unstable</a>) 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.</div><div><br></div><div><br></div><div>All the best,</div><div>Ben Hur</div><div></div></div><div dir="auto"></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Tue, Feb 25, 2020, 07:25 J. M <<a href="mailto:jimimckay@gmail.com" target="_blank" rel="noreferrer">jimimckay@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Hi Ismail,<div><br></div><div>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:</div><div><br></div><div>sudo apt-get install qgis qgis-plugin-grass<br>Reading package lists... Done<br>Building dependency tree <br>Reading state information... Done<br>Some packages could not be installed. This may mean that you have<br>requested an impossible situation or if you are using the unstable<br>distribution that some required packages have not yet been created<br>or been moved out of Incoming.<br>The following information may help to resolve the situation:<br><br>The following packages have unmet dependencies.<br> qgis : Depends: python3-qgis (= 1:3.12.0+28bionic) but it is not going to be installed<br>E: Unable to correct problems, you have held broken packages.<br></div><div><br></div><div><font face="arial, sans-serif">I've tried this:</font></div><div><pre style="margin-top:0px;margin-bottom:1em;padding:12px 8px;border:0px;font-variant-numeric:inherit;font-variant-east-asian:inherit;font-stretch:inherit;line-height:inherit;font-family:Consolas,Menlo,Monaco,"Lucida Console","Liberation Mono","DejaVu Sans Mono","Bitstream Vera Sans Mono","Courier New",monospace,sans-serif;font-size:13px;vertical-align:baseline;box-sizing:inherit;width:auto;max-height:600px;overflow:auto;border-radius:3px;color:rgb(57,51,24)"><code style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;line-height:inherit;font-family:Consolas,Menlo,Monaco,"Lucida Console","Liberation Mono","DejaVu Sans Mono","Bitstream Vera Sans Mono","Courier New",monospace,sans-serif;vertical-align:baseline;box-sizing:inherit;white-space:inherit"><span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;line-height:inherit;font-family:inherit;vertical-align:baseline;box-sizing:inherit;color:rgb(48,51,54)">sudo apt-get purge qgis
sudo apt-get autoremove qgis
sudo apt-get </span><span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;line-height:inherit;font-family:inherit;vertical-align:baseline;box-sizing:inherit;color:rgb(133,140,147)">--purge remove qgis</span><span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;line-height:inherit;font-family:inherit;vertical-align:baseline;box-sizing:inherit;color:rgb(48,51,54)">
sudo apt-get </span><span style="margin:0px;padding:0px;border:0px;font-style:inherit;font-variant:inherit;font-weight:inherit;font-stretch:inherit;line-height:inherit;font-family:inherit;vertical-align:baseline;box-sizing:inherit;color:rgb(16,16,148)">update</span></code></pre><pre style="margin-top:0px;margin-bottom:1em;padding:12px 8px;border:0px;font-variant-numeric:inherit;font-variant-east-asian:inherit;font-stretch:inherit;line-height:inherit;font-size:13px;vertical-align:baseline;box-sizing:inherit;width:auto;max-height:600px;overflow:auto;border-radius:3px;color:rgb(57,51,24)"><font face="arial, sans-serif"> but it returned the following:</font></pre><pre style="margin-top:0px;margin-bottom:1em;padding:12px 8px;border:0px;font-variant-numeric:inherit;font-variant-east-asian:inherit;font-stretch:inherit;line-height:inherit;font-size:13px;vertical-align:baseline;box-sizing:inherit;width:auto;max-height:600px;overflow:auto;border-radius:3px;color:rgb(57,51,24)">sudo apt-get update</pre></div><div> <br>Hit:6 <a href="http://qgis.org/debian" rel="noreferrer noreferrer" target="_blank">http://qgis.org/debian</a> bionic InRelease <br> The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 76F1A20FF987672F<br>Hit:18 <a href="http://ppa.launchpad.net/ubuntugis/ubuntugis-unstable/ubuntu" rel="noreferrer noreferrer" target="_blank">http://ppa.launchpad.net/ubuntugis/ubuntugis-unstable/ubuntu</a> bionic InRelease<br>Err:18 <a href="http://ppa.launchpad.net/ubuntugis/ubuntugis-unstable/ubuntu" rel="noreferrer noreferrer" target="_blank">http://ppa.launchpad.net/ubuntugis/ubuntugis-unstable/ubuntu</a> bionic InRelease<br> The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 089EBE08314DF160<br>Reading package lists... Done <br>W: GPG error: <a href="https://dl.winehq.org/wine-builds/ubuntu" rel="noreferrer noreferrer" target="_blank">https://dl.winehq.org/wine-builds/ubuntu</a> bionic InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 76F1A20FF987672F<br>E: The repository '<a href="https://dl.winehq.org/wine-builds/ubuntu" rel="noreferrer noreferrer" target="_blank">https://dl.winehq.org/wine-builds/ubuntu</a> bionic InRelease' is not signed.<br>N: Updating from such a repository can't be done securely, and is therefore disabled by default.<br>N: See apt-secure(8) manpage for repository creation and user configuration details.<br>W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: <a href="http://ppa.launchpad.net/ubuntugis/ubuntugis-unstable/ubuntu" rel="noreferrer noreferrer" target="_blank">http://ppa.launchpad.net/ubuntugis/ubuntugis-unstable/ubuntu</a> bionic InRelease: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 089EBE08314DF160<br></div><div><font face="monospace"><br></font></div><div><font face="monospace"><br></font></div><div><font face="arial, sans-serif">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:</font></div><div><a href="https://www.qgis.org/en/site/forusers/alldownloads.html#debian-ubuntu" rel="noreferrer noreferrer" target="_blank">https://www.qgis.org/en/site/forusers/alldownloads.html#debian-ubuntu</a><font face="arial, sans-serif"><br></font></div><div>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?</div><div><br></div><div>Sorry team, I just can't get this to work and I'm worried I do irreparable damage to my system with this process.</div><div>Please help me out, guys!</div><div>Cheers,</div><div>Jimi.</div><div><br></div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Feb 24, 2020 at 6:58 PM J. M <<a href="mailto:jimimckay@gmail.com" rel="noreferrer noreferrer" target="_blank">jimimckay@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Hi Ismail!<div><br></div><div>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!</div><div><br></div><div>Thanks a lot,</div><div>Jimi.</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, Feb 23, 2020 at 8:59 AM Ismail Sunni <<a href="mailto:imajimatika@gmail.com" rel="noreferrer noreferrer" target="_blank">imajimatika@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Hi Jimi,<div><br></div><div>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 :)<br><br>While trying to fix my problem, I found this <a href="https://askubuntu.com/questions/140246/how-do-i-resolve-unmet-dependencies-after-adding-a-ppa" rel="noreferrer noreferrer" target="_blank">https://askubuntu.com/questions/140246/how-do-i-resolve-unmet-dependencies-after-adding-a-ppa</a> which probably useful for you.</div><div><br></div><div>Best regards</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, Feb 20, 2020 at 1:22 PM J. M <<a href="mailto:jimimckay@gmail.com" rel="noreferrer noreferrer" target="_blank">jimimckay@gmail.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Hi again Andre,<div><br></div><div>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?</div><div><br></div><div>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..</div><div><br></div><div>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! </div><div><br></div><div>Thanks a lot team,</div><div>Jimi.</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Feb 19, 2020 at 8:18 PM Andre Joost <<a href="mailto:andre%2Bjoost@nurfuerspam.de" rel="noreferrer noreferrer" target="_blank">andre+joost@nurfuerspam.de</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">Am 18.02.20 um 23:58 schrieb J. M:<br>
> Hi again Andre,<br>
><br>
> I don't actually understand what to do with this, because I can't run 'sudo<br>
> apt-get install qgis qgis-plugin-grass' as it keeps giving me the same<br>
> error messages about broken packages.<br>
<br>
Yes, because you have packages that are compiled against a set of <br>
libraries that does not match your computer. You have to remove, <br>
autoremove and purge those QGIS packages to force a download from the <br>
right folder.<br>
<br>
<br>
> When you say this, I don't get what this link does. I click on it and it<br>
> just takes me into a file hierarchy. Are users supposed to obtain the<br>
> downloads from here, or is it purely informative?<br>
> Try<br>
> deb <a href="https://qgis.org/ubuntugis" rel="noreferrer noreferrer noreferrer" target="_blank">https://qgis.org/ubuntugis</a> bionic main<br>
<br>
That should go into your sources list, to replace the QGIS download <br>
source you used before. The Ubuntu Software center has a tab for "other <br>
Software" that holds the same information, so no need to edit the <br>
sources file manually.<br>
<br>
HTH,<br>
Andre Joost<br>
<br>
<br>
_______________________________________________<br>
Qgis-user mailing list<br>
<a href="mailto:Qgis-user@lists.osgeo.org" rel="noreferrer noreferrer" target="_blank">Qgis-user@lists.osgeo.org</a><br>
List info: <a href="https://lists.osgeo.org/mailman/listinfo/qgis-user" rel="noreferrer noreferrer noreferrer" target="_blank">https://lists.osgeo.org/mailman/listinfo/qgis-user</a><br>
Unsubscribe: <a href="https://lists.osgeo.org/mailman/listinfo/qgis-user" rel="noreferrer noreferrer noreferrer" target="_blank">https://lists.osgeo.org/mailman/listinfo/qgis-user</a></blockquote></div>
_______________________________________________<br>
Qgis-user mailing list<br>
<a href="mailto:Qgis-user@lists.osgeo.org" rel="noreferrer noreferrer" target="_blank">Qgis-user@lists.osgeo.org</a><br>
List info: <a href="https://lists.osgeo.org/mailman/listinfo/qgis-user" rel="noreferrer noreferrer noreferrer" target="_blank">https://lists.osgeo.org/mailman/listinfo/qgis-user</a><br>
Unsubscribe: <a href="https://lists.osgeo.org/mailman/listinfo/qgis-user" rel="noreferrer noreferrer noreferrer" target="_blank">https://lists.osgeo.org/mailman/listinfo/qgis-user</a></blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr"><div dir="ltr"><div>Ismail Sunni</div><div>Software Engineer</div><div><a href="http://ismailsunni.id" rel="noreferrer noreferrer" target="_blank">ismailsunni.id</a><br><div><a href="http://ismailsunni.wordpress.com" rel="noreferrer noreferrer" target="_blank">ismailsunni.wordpress.com</a></div></div></div></div>
</blockquote></div>
</blockquote></div>
_______________________________________________<br>
Qgis-user mailing list<br>
<a href="mailto:Qgis-user@lists.osgeo.org" rel="noreferrer noreferrer" target="_blank">Qgis-user@lists.osgeo.org</a><br>
List info: <a href="https://lists.osgeo.org/mailman/listinfo/qgis-user" rel="noreferrer noreferrer noreferrer" target="_blank">https://lists.osgeo.org/mailman/listinfo/qgis-user</a><br>
Unsubscribe: <a href="https://lists.osgeo.org/mailman/listinfo/qgis-user" rel="noreferrer noreferrer noreferrer" target="_blank">https://lists.osgeo.org/mailman/listinfo/qgis-user</a></blockquote></div>
</blockquote></div>
</blockquote></div>
</blockquote></div>