QGIS does not launch after new installation on Leap 15.2

English Applications
1

I ha have a new installation of Leap 15.2 and tried to install the latest version of QGIS (3.18.2).

However, it will not launch. If starting it from the console by entering ‘qgis’ I get this error message:
qgis: symbol lookup error: /usr/lib64/libqgis_core.so.3.18.2: undefined symbol: GEOSCoordSeq_setXY_r

This looks like a library incompatibility in the package. Has anyone tips to overcome this?

I tried installing with both Yast and zypper. The package appears to bo quite recently compiled, April 25, as shown by the technical info in Yast

Ko van Huissteden

2

That is remarkable, recently there was an issue that did occur both with QGIS 3.16 and 3.18 on Open Suse Leap 15.2, x86 64 bit so for @ehjsuse QGIS was working.

QGIS Python error “RuntimeError: Cannot find any suitable spatialite module”

Also no problem for me running QGIS on Tumbleweed.

The problem looks a bit like this problem and checking what I have installed:

> sudo zypper se geos
...
S | Name                    | Summary                                     | Type
--+-------------------------+---------------------------------------------+-----------
  | geos                    | Geometry Engine - Open Source               | srcpackage
  | geos-debuginfo          | Debug information for package geos          | package
  | geos-debugsource        | Debug sources for package geos              | package
  | geos-devel              | Development files for GEOS                  | package
i | libgeos-3_9_1           | Geometry Engine library                     | package
  | libgeos-3_9_1-debuginfo | Debug information for package libgeos-3_9_1 | package
i | libgeos_c1              | C language interface for the GEOS library   | package
  | libgeos_c1-debuginfo    | Debug information for package libgeos_c1    | package

What is this last command giving for you?

3

This is what I get after running the command:
Loading repository data…
Reading installed packages…

Loading repository data…
Reading installed packages…

S  | Name                    | Summary                                     | Type
---+-------------------------+---------------------------------------------+-----------
   | geos                    | Geometry Engine - Open Source               | srcpackage
   | geos-debuginfo          | Debug information for package geos          | package
   | geos-debugsource        | Debug sources for package geos              | package
   | geos-devel              | Development files for GEOS                  | package
i+ | libgeos-3_6_2           | Geometry Engine library                     | package
   | libgeos-3_9_1           | Geometry Engine library                     | package
   | libgeos-3_9_1-debuginfo | Debug information for package libgeos-3_9_1 | package
i+ | libgeos_c1              | C language interface for the GEOS library   | package
   | libgeos_c1-debuginfo    | Debug information for package libgeos_c1    | package
   | python2-geos            | Python bindings for Geometry Engine         | package
   | ruby-geos               | Ruby bindings for Geometry Engine           | package

Looks like geos is ok, libgeos-3_6_2 is probably left over from an attempt to to install the QGIS LTR version

4

Problems solved! The link to the problem with GEOSCoordSeq_getXY was helpful.

I checked with Yast which GEOS version was actually installed, it proved to be 3.6. I replaced this with 3.9, and QGIS starts fine.

Thanks a lot for the tips!

5

qgis is in the GEO Repo.
Do you dup to this Repo?

After dup to the Geos Repo all is fine here.

6

No I didn’t, how do I do this?

7

In Yast----Software Installation goto the Repository Tab and klick on the GEO Repository------- switching all packages to the ones from this Repository

Or:

zypper dup --allow-vendor-change --from Reponame or URL or Number(see zypper lr -d)