I'm running a largely default Drupal 8.0.0-RC2 site. At /admin/config/development/performance the "Bandwidth Optimization" settings for "Aggregate CSS Files" and "Aggregate Javascript files" are disabled, so I cannot change their state. Extensive though fruitless googling suggests this is unusual, but I'm stumped on where to start. I'm using the Drude environment for my site.

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    what version of Drupal 8 are you using? – No Sssweat Oct 31 '15 at 22:24
  • Drupal version 8.0.0-rc2 – Screenack Oct 31 '15 at 22:31
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    humm might be a bug, have you tried doing it on a clean install without installing any extra modules? – No Sssweat Oct 31 '15 at 22:45
  • Only core is currently enabled. Switched to the ironically-named "Seven" theme, checkboxes remain disabled. – Screenack Oct 31 '15 at 22:55
  • Disable JS and try again. I currently have issues #states going wild in RC2. – user21641 Nov 1 '15 at 10:19

There is a problem with the public directory, it is not configured or it is not writable. You can check this with drush:

drush ev "var_dump(is_dir('public://'), is_writable('public://'))"

Result should be:


If these two conditions are true, then the checkboxes will be available.

| improve this answer | |
  • Yes this fixed the problem, thank you. I did see a UI notice about the "Public" directory needing to be configured, which it was, but I missed any notice about writable. That eval script is most helpful. Obviously, "Files" should be writable. Running drude turns some basic LAMP stack management practices around. – Screenack Nov 1 '15 at 12:04

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