Talk:HiDPI display support
I get an error importing retina-sized images: Error creating thumbnail: /bin/bash: /usr/bin/convert: No such file or directory
When I import a "normal-sized" image, the thumbnail appears properly.
I'm guessing this is part of the known issues relating to HiDPI images, but I haven't seen anyone mention it explicitly. The error message is extremely misleading (unless it's not and something else is going on).
I create retina images by taking a screen shot on a MacBook Pro with Retina display. I open the image in SnagIt and resave using the "Save using Retina size" check box. I then upload the file to my Mediawiki instance.
MediaWiki 1.21.1 PHP 5.3.3 (apache2handler) MySQL 5.1.69
(This is running on an AWS server...)
The Full resolution version link works fine: the image appears as it should (i.e, huge). But the thumbnail on the [[File:Imagename]] page does not appear and instead displays the error message as reported above.
- If I had to guess, the larger images are simply using more memory and the default memory limits for the ImageMagick shell-out are causing it to fail unexpectedly (this can cause really weird error messages that don't sound right).
- Try copying these lines in your LocalSettings.php:
- $wgMaxShellMemory = 1024000; // 10x the default
- $wgMaxShellFileSize = 1024000; // 10x the default
- and see if that helps. (You may have to force the page to re-render.)
- Another possibility is that the non-retina images are small enough that they don't have to be resized, and your ImageMagick setup is simply broken, or changed during a server update. Check whether ImageMagick is properly installed on the server (there should be a /usr/bin/convert command on the filesystem!) --brion (talk) 21:04, 5 September 2013 (UTC)