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<p>Just noted on the closed issue that I saw this problem for the first time today. The error message returned by Qgis being</p>
<p><span style=" color:#dc7d00;">2022-04-18T01:53:51 WARNING </span>D1961_94CFT_92XGM_94CFW_92XGN_f6e10828_d0fa_42e6_a318_901bef99006f :: /mnt/sharerw/mainpc/maps/References/Volume 11-12 - MSL/Station - Dunsandel/D1961:94CFT-92XGM+94CFW-92XGN.jpg, band 1: IReadBlock failed at X offset 0, Y offset 600: Reading this image would require libjpeg to allocate at least 1866240000 bytes. This is disabled since above the 104857600 threshold. You may override this restriction by defining the GDAL_ALLOW_LARGE_LIBJPEG_MEM_ALLOC environment variable, or recompile GDAL by defining the GDAL_LIBJPEG_LARGEST_MEM_ALLOC macro to a value greater than 104857600</p>
<p>In this case the raster file size is only 26 MB.
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<p>The error message is spurious as the issue is found to be caused by using a Progressive JPEG as exported from Gimp. When the Progressive setting is turned off in the Gimp export settings there are no problems importing the raster in Qgis or displaying it.</p>
<p>My recollection is the issue of progressive JPEGs not being able to be loaded in Qgis is not a new problem and something I first found to be happening several years ago. I had to at that time convert all the progressive JPEG rasters I had into non progressive. The issue may have occurred because of a new release of GDAL or possibly when Qgis 3.0 was introduced.
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