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<font face="Arial">QGIS 2.18 on Linux Mint 18.1 64 bit<br>
<br>
I recently had to clean install my OS & QGIS etc. Whilst
it's mostly working, the raster georeferencer is unusably slow
most of the time.<br>
<br>
I thought initially it didn't like jpgs and pdfs were OK, but it
is the same regardless. On clicking transform, the progress
indication window opens & it will sit there for an
indeterminate period (I left it over 30 minutes once). There is a
lot of CPU activity across all four cores. The only way out I've
found is to kill QGIS.<br>
<br>
If I have the Target Resolution box empty, the result is an image
comprising large blocks/pixels and a wide black component. If I
select the target resolution, I can improve the image (but still
unusable) however, to get anything vaguely usable, the process
takes ages as mentioned above<br>
<br>
All my previous installations have been fine & I have never
had a problem with the georeferencer.<br>
<br>
Any ideas where to look please?<br>
Many thanks</font>
<div class="moz-signature">-- <br>
<font font-family="Helvetica" color="#4d583d" size="3"> Jonathan
Webb <br>
Freelance GIS Specialist <br>
07941 921905 <br>
<a class="moz-txt-link-freetext" href="http://www.jwebbgis.co.uk">http://www.jwebbgis.co.uk</a><br>
<a class="moz-txt-link-freetext" href="http://uk.linkedin.com/in/jwebbgis">http://uk.linkedin.com/in/jwebbgis</a></font></div>
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