Only background is visible when using linux nvidia drivers

[dreamer]

This issue happens on Fedora 20, kernel 3.14.2-200.fc20.x86_64, all packages up-to date, using nvidia drivers from rpmfusion, version 331.67.

As in title. No font is rendered at all, only background. Here's sample rendering of about-mozilla.html: https://dl.dropboxusercontent.com/u/420606/servo-issue.png (not that exciting, I know). When trying acid2 only white background is shown.

Required fonts are installed, servo does not indicate any critical errors on stdout. Issue cannot be reproduced with cpu rendering due to issue 2300.

I don't know what is root cause of this problem, but after switching from nvidia to nouveau this issue can't be reproduced.

In older versions of servo this issue didn't exist, I pinpointed regression to be introduced with acid2 support, somewhere between these two commits: f8e3e50 and c49f23f.

If I were to speculate, it looks as if background was rendered on top of page content.

[evilpie]

I have the same problem with the nvidia drivers on Mint.

[mrobinson]

Looks like this is related to #2300 after all. I should have a patch for rust-layers in a few minutes.