[Qgis-user] Installing QGIS- 3.4.x Madeira LTR for Ubuntu xenial

[Mike Flannigan]

I have your exact same problem, except I tried to
install QGIS 3.10 after uninstalling my QGIS 2.18.
I am on Linux Mint 19.2.

When I go to the directory: /usr/share/gdal
I have a folder "2.2"

My sources.list file located here:
/etc/apt/sources.list
has this inside it:

#deb cdrom:[Linux Mint 19.2 _Tina_ - Release amd64 20190729]/ bionic 
contrib main non-free
deb https://qgis.org/ubuntu/ unstable main
deb-src https://qgis.org/ubuntu/ unstable main


The output of the 2 install commands is shown below.

The problem is that I try to install QGIS 3.10 and I
wind up with QGIS 2.18.

If I get this problem fixed I'll let you know what
I did.  I'm not real motivated to fix it right now
since QGIS 2.18 meets most of my needs.

Thank you.


Mike



mike at mike-linuxmint:~/Documents/00MikeF$ sudo apt-get update
Ign:1 http://packages.linuxmint.com tina InRelease
Hit:2 http://packages.linuxmint.com tina Release
Ign:3 http://dl.google.com/linux/earth/deb stable InRelease
Hit:4 http://archive.canonical.com/ubuntu bionic InRelease
Hit:5 http://dl.google.com/linux/earth/deb stable Release
Hit:7 http://ppa.launchpad.net/thomas.tsai/ubuntu-tuxboot/ubuntu bionic 
InRelease
Hit:8 http://archive.ubuntu.com/ubuntu bionic InRelease
Get:9 http://security.ubuntu.com/ubuntu bionic-security InRelease [88.7 kB]
Get:11 http://archive.ubuntu.com/ubuntu bionic-updates InRelease [88.7 kB]
Get:12 https://qgis.org/ubuntu unstable InRelease [3,703 B]
Err:12 https://qgis.org/ubuntu unstable InRelease
   The following signatures couldn't be verified because the public key 
is not available: NO_PUBKEY 51F523511C7028C3
Get:13 http://security.ubuntu.com/ubuntu bionic-security/main amd64 
DEP-11 Metadata [38.5 kB]
Get:14 http://archive.ubuntu.com/ubuntu bionic-backports InRelease [74.6 
kB]
Get:15 http://security.ubuntu.com/ubuntu bionic-security/universe amd64 
DEP-11 Metadata [42.2 kB]
Get:16 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 DEP-11 
Metadata [295 kB]
Get:17 http://security.ubuntu.com/ubuntu bionic-security/multiverse 
amd64 DEP-11 Metadata [2,460 B]
Get:18 http://archive.ubuntu.com/ubuntu bionic-updates/universe amd64 
DEP-11 Metadata [264 kB]
Get:19 http://archive.ubuntu.com/ubuntu bionic-updates/multiverse amd64 
DEP-11 Metadata [2,464 B]
Get:20 http://archive.ubuntu.com/ubuntu bionic-backports/universe amd64 
DEP-11 Metadata [7,976 B]
Reading package lists... Done
N: Skipping acquire of configured file 'main/binary-i386/Packages' as 
repository 'http://dl.google.com/linux/earth/deb stable InRelease' 
doesn't support architecture 'i386'
W: GPG error: https://qgis.org/ubuntu unstable InRelease: The following 
signatures couldn't be verified because the public key is not available: 
NO_PUBKEY 51F523511C7028C3
E: The repository 'https://qgis.org/ubuntu unstable 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.
mike at mike-linuxmint:~/Documents/00MikeF$ sudo apt-get install qgis 
qgis-plugin-grass
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following additional packages will be installed:
   qgis-provider-grass
Suggested packages:
   gpsbabel
The following NEW packages will be installed:
   qgis qgis-plugin-grass qgis-provider-grass
0 upgraded, 3 newly installed, 0 to remove and 32 not upgraded.
Need to get 5,938 kB of archives.
After this operation, 23.5 MB of additional disk space will be used.
Do you want to continue? [Y/n] y
Get:1 http://archive.ubuntu.com/ubuntu bionic/universe amd64 qgis amd64 
2.18.17+dfsg-1 [5,263 kB]
Get:2 http://archive.ubuntu.com/ubuntu bionic/universe amd64 
qgis-provider-grass amd64 2.18.17+dfsg-1 [86.7 kB]
Get:3 http://archive.ubuntu.com/ubuntu bionic/universe amd64 
qgis-plugin-grass amd64 2.18.17+dfsg-1 [588 kB]
Fetched 5,938 kB in 4s (1,418 kB/s)
Selecting previously unselected package qgis.
(Reading database ... 360406 files and directories currently installed.)
Preparing to unpack .../qgis_2.18.17+dfsg-1_amd64.deb ...
Unpacking qgis (2.18.17+dfsg-1) ...
Selecting previously unselected package qgis-provider-grass.
Preparing to unpack .../qgis-provider-grass_2.18.17+dfsg-1_amd64.deb ...
Unpacking qgis-provider-grass (2.18.17+dfsg-1) ...
Selecting previously unselected package qgis-plugin-grass.
Preparing to unpack .../qgis-plugin-grass_2.18.17+dfsg-1_amd64.deb ...
Unpacking qgis-plugin-grass (2.18.17+dfsg-1) ...
Setting up qgis (2.18.17+dfsg-1) ...
Setting up qgis-provider-grass (2.18.17+dfsg-1) ...
Setting up qgis-plugin-grass (2.18.17+dfsg-1) ...
Processing triggers for gnome-menus (3.13.3-11ubuntu1.1) ...
Processing triggers for mime-support (3.60ubuntu1) ...
Processing triggers for desktop-file-utils (0.23+linuxmint6) ...
Processing triggers for man-db (2.8.3-2ubuntu0.1) ...
mike at mike-linuxmint:~/Documents/00MikeF$



On 11/12/19 8:56 AM, qgis-user-request at lists.osgeo.org wrote:
> Good afternoon,
>
> I have a question about  QGIS- 3.4.x Madeira LTR for Ubuntu xenial.
> Today I installed this version in my computer. I added the lines:
>
> debhttps://qgis.org/ubuntu-ltr  xenial main deb-src
> https://qgis.org/ubuntu-ltr  xenial main
>
> _to the repositories in the source list._
> <https://qgis.org/ubuntu-ltr>
>
> However, when I execute QGIS, instead of version 3.4 Madeira, I find:
> QGis 2.18.28 Las Palmas. Did I do something wrong? How could I get
> version 3.4?
>
> Thanks a lot
>
> Rosa.

On 11/12/19 12:04 PM, qgis-user-request at lists.osgeo.org wrote:
> Message: 3
> Date: Tue, 12 Nov 2019 17:29:00 +0100
> From: Jürgen E. Fischer<jef at norbit.de>
> To:qgis-user at lists.osgeo.org
> Subject: Re: [Qgis-user] Installing QGIS- 3.4.x Madeira LTR for Ubuntu
> 	xenial
>
>
> Hi Rosa,
> xenial's GDAL is too old. QGIS3 at least needs GDAL2. You can use
> ubuntugis-ltr (see
> https://qgis.org/en/site/forusers/alldownloads.html#debian-ubuntu).
>
>
> Jürgen


On 11/9/19 2:00 PM, qgis-user-request at lists.osgeo.org wrote:
> Message: 9
> Date: Sat, 9 Nov 2019 10:29:17 -0800
> From: Dave Stevens<geek at uniserve.com>
> To: QGIS User<qgis-user at lists.osgeo.org>
> Subject: [Qgis-user] linux qgis repo error
>
> I'm getting this warning on updating Linux Mint:
>
> W: GPG error:https://qgis.org/debian  xenial InRelease: The following
> signatures couldn't be verified because the public key is not
> available: NO_PUBKEY 51F523511C7028C3 W: The repository
> 'https://qgis.org/debian  xenial InRelease' is not signed.
>
> Who is responsible for this?
>
> Thanks!
>
> d