This is on Intel I guess? Your investigations into bug 1580792 does point out that the driver complains of a bad argument to glCopyTexSubImage - the only consumer of glCopyTexSubImage that I can find is in the Qt's font rendering system - so if it fails, it would cause font rendering issues. That's my best guess currently
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1583088 Title: Randomly corrupt characters in text rendering, mainly in Unity8 window titlebars To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/qtmir/+bug/1583088/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
