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Until yesterday my whole qgis and python-qgis worked fine with version 2.14 under Ubuntu 14.04. After a simple sudo apt-get update and sudo apt-get upgrade qgis failed to update... Several attempts to reinstall it with different versions failed.

Current error message (for version 2.14.3) goes like this:

qgis-providers (2.14.3+dfsg-2~trusty1) is configured ...
/usr/lib/qgis/crssync: symbol lookup error: /usr/lib/libgdal.so.20: undefined symbol: GEOSDelaunayTriangulation_r

I also tried to reinstall all gdal libraries - not sure if I got all?!

Maybe it is somehow related to this one: QGIS 2.14 fails to install on Ubuntu 14.04 ?

UPDATE:

Trying to install version 2.16.0 it gives different but similar error:

/usr/lib/qgis/crssync: symbol lookup error: /usr/lib/libqgis_core.so.2.16.0: undefined symbol: GEOSNearestPoints_r

UPDATE Sources:

For version 2.16.0 there are these sources in /etc/apt/sources.list:

deb http://qgis.org/debian trusty main
deb-src http://qgis.org/debian trusty main
deb http://qgis.org/debian trusty main
deb-src http://qgis.org/debian trusty main

which are all the same, right?

When I do apt-cache policy qgis it gives me:

qgis:
  Installiert:           1:2.16.0+20trusty
  Installationskandidat: 1:2.16.0+20trusty
  Versionstabelle:
 *** 1:2.16.0+20trusty 0
        500 http://qgis.org/debian/ trusty/main amd64 Packages
        100 /var/lib/dpkg/status
     2.0.1-2build2 0
        500 http://de.archive.ubuntu.com/ubuntu/ trusty/universe amd64 Packages
Community
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Henhuy
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  • which version of ubuntu are you running? – Ian Turton Jul 19 '16 at 10:50
  • I'm using Ubuntu 14.04 - just added it to the question. thx – Henhuy Jul 19 '16 at 10:57
  • What's your repository configuration? In other words, where is ubuntu trying to get qgis from? Look in /etc/apt/sources.list and sources.list.d/* – Spacedman Jul 19 '16 at 12:30
  • I also reported the bug on QGis Application System: http://hub.qgis.org/issues/15307 maybe they can help as well?! – Henhuy Jul 19 '16 at 13:30
  • I have the same problem here. I used the qgis version based on the https://launchpad.net/~ubuntugis/+archive/ubuntu/ubuntugis-unstable repository. Tried both qgis 2.14 and 2.16 to install on Ubuntu 14.04. – lukaskrieger Aug 10 '16 at 11:42
  • I don't believe qgis 2.14 or 2.16 is still available. Only qgis 2.18 is supported using the Debian repo: see for yourself here http://qgis.org/debian/pool/main/q/qgis/ The only 2.16 is unstable qgis_2.16.2+99unstable_i386.deb. There is no 2.14. This question is no longer relevant. Please try installing 2.18 (currently) and post back if you have problems. – Evan Carroll Nov 13 '16 at 21:52
  • You may still have problems with 2.14, or 2.16 -- but because the official packages in the debian repo have been yanked this bug can no longer be reproduced even if we cared to fix it (being old). – Evan Carroll Nov 13 '16 at 21:53
  • you are right - this question has no relevance any longer. I already changed to 2.18 (reinstalled system), so I voted to close as off-topic... – Henhuy Nov 14 '16 at 09:08
  • I just got this message in 2017 so this is not irrelevant to a user who suddenly gets such a message & is trying to understand what is going on. – user3418765 Mar 20 '17 at 22:19

1 Answers1

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On my machine 

 Linux astun-desktop 3.19.0-32-generic #37~14.04.1-Ubuntu SMP Thu Oct 22 09:41:40 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

With the qgis.org repo set:

deb http://qgis.org/debian/ trusty main

The system update manager updated me to Qgis 2.16.0-Nødebo with no manual intervention from me at all.

Ian Turton
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  • I tried this to - see my update above – Henhuy Jul 19 '16 at 11:14
  • I've had two qgis 2.16 updates work fine on Linux Mint but the first one I just tried from Dell's stock Ubuntu broke qgis etc very badly (also installed a kernel with no networking support, but that's another story...). Problem with qgis seems to be libgdal2 related. – Spacedman Jul 19 '16 at 12:32