On 10/28/15, J Hayes slowking4@gmail.com wrote:
large tiffs are not rendering in commons. "The bug is in the MediaWiki thumbnail generator," https://commons.wikimedia.org/wiki/Commons:Help_desk/Archive/2015/02#Polar_b...
vipscaler might be a solution https://meta.wikimedia.org/wiki/Wikimedia_Blog/Drafts/VipsScaler
Oddly enough, vips scalar was the problem here. There used to be a bug that causes that, its been fixed now (for a long time now), but the old version was cached. If you see any images that are almost entirely white with a bit of black around the edges, do ?action=purge to the image description page.
However there appears to be a second bug ( https://phabricator.wikimedia.org/T116947 ). Rendering the file in sizes less then 2523px seems to be broken.
-- -bawolff