[QGIS-Developer] How to enable debugging mode on QGIS start in Win11

[Richard Duivenvoorde]

In windows/osgeo4w the 'nightly builds' (with -dev- in there package names) are build in DEBUG mode if I am correct...

so these should show you logging info, but I think you also need to install a tool to SEE that logging. I know there was some utility for it. Not sure if you can see it in the Event Log of WIndows...
Juergen posted some answers in the old issue tracker, but cannot find it...

Ah wait: from historical docs: https://issues.qgis.org/projects/qgis/wiki/Bugreports
use:
https://learn.microsoft.com/en-us/sysinternals/downloads/debugview
(but maybe Windows can do that now without tools...)

Regards,

Richard Duivenvoorde

On 6/20/23 16:38, Alessandro Pasotti via QGIS-Developer wrote:
> QGIS_DEBUG=X has no effect if QGIS was not built in debug mode.
> 
> 
> On Tue, Jun 20, 2023 at 4:18 PM Vedran Stojnović via QGIS-Developer
> <qgis-developer at lists.osgeo.org> wrote:
>>
>> Hi,
>>
>> I just installed QGIS 3.30.3 via web installer ("qgis-full" version) and QGIS won't start at all, nor does throw any error when I start it from PowerShell by executing "qgis-bin.exe".
>> I tried reinstalling a few times using different servers (default one and norbit.de) and I also cleaned the cache folder before changing the server.
>>
>> I already tried adding these two lines to "qgis-bin.env" and I created "qgislog.txt" on the desktop, but I still do not get any output to the command line and txt file is empty after trying to start qgis:
>> QGIS_DEBUG=9
>> QGIS_LOG_FILE=C:\Users\phidr\Desktop\qgislog.txt
>>
>> so the current contents of "qgis-bin.env" is:
>> PATH=C:\OSGeo4W\apps\qgis\bin;C:\OSGeo4W\apps\grass\grass82\lib;C:\OSGeo4W\apps\grass\grass82\bin;C:\OSGeo4W\apps\qt5\bin;C:\OSGeo4W\apps\Python39\Scripts;C:\OSGeo4W\bin;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\system32\WBem
>> GDAL_DATA=C:\OSGeo4W\apps\gdal\share\gdal
>> GDAL_DRIVER_PATH=C:\OSGeo4W\apps\gdal\lib\gdalplugins
>> GDAL_FILENAME_IS_UTF8=YES
>> PDAL_DRIVER_PATH=C:\OSGeo4W\apps\pdal\plugins
>> GISBASE=C:\OSGeo4W\apps\grass\grass82
>> GRASS_PROJSHARE=C:\OSGeo4W\share\proj
>> GRASS_PYTHON=C:\OSGeo4W\bin\python3.exe
>> OSGEO4W_ROOT=C:\OSGeo4W
>> PROJ_LIB=C:\OSGeo4W\share\proj
>> PYTHONHOME=C:\OSGeo4W\apps\Python39
>> PYTHONPATH=C:\OSGeo4W\apps\grass\grass82\etc\python;
>> PYTHONUTF8=1
>> QGIS_PREFIX_PATH=C:/OSGeo4W/apps/qgis
>> QT_PLUGIN_PATH=C:\OSGeo4W\apps\qgis\qtplugins;C:\OSGeo4W\apps\qt5\plugins
>> VSI_CACHE=TRUE
>> VSI_CACHE_SIZE=1000000
>> O4W_QT_PREFIX=C:/OSGeo4W/apps/Qt5
>> O4W_QT_BINARIES=C:/OSGeo4W/apps/Qt5/bin
>> O4W_QT_PLUGINS=C:/OSGeo4W/apps/Qt5/plugins
>> O4W_QT_LIBRARIES=C:/OSGeo4W/apps/Qt5/lib
>> O4W_QT_TRANSLATIONS=C:/OSGeo4W/apps/Qt5/translations
>> O4W_QT_HEADERS=C:/OSGeo4W/apps/Qt5/include
>> QGIS_WIN_APP_NAME=OSGeo4W\QGIS Desktop 3.30.3
>> SSL_CERT_DIR=C:\OSGeo4W\apps\openssl\certs
>> SSL_CERT_FILE=C:\OSGeo4W\bin\curl-ca-bundle.crt
>> QGIS_DEBUG=9
>> QGIS_LOG_FILE=C:\Users\phidr\Desktop\qgislog.txt
>>
>> --
>> Kind regards,
>> Vedran Stojnović.
>> _______________________________________________
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> 
> 
>