User Agent: Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/38.0.2125.111 Safari/537.36 Steps to reproduce: Sometimes the UI of Firefox hangs. I can click buttons and close tabs for instance, when resizing the UI it turns white. I'll add a screenshot once it happens again. This has something to do with the Intel HD 3000 gfx in my laptop. When I use the dedicated nVidia GeForce GT 540M, this problem doesn't occur. Actual results: The UI doesn't repaint? Expected results: The UI should continue to work.

This is Windows 8, 32-bit, seemingly running Cairo. Now, we could just be talking about performance issues, resizing the window in software may very well be expensive enough to just show white until we catch up. Hard to tell without a way to reproduce it. Bas, can you quickly check if you're seeing something like this on your laptop when you force software mode?

It's not a performance issue, the window is just completely white, including title bar, window borders etc. The UI doesn't 'repaint' at all, while i can still interact with the invisble UI. Hovering links still show the 'hand'-cursor and mouse-clicking where the Windows' close button is, shows the question pop-up about multiple tabs and asking if I want to close all of them. Hopefully I can create a screenshot tomorrow. I have updated to the latest Intel HD drivers, but it still occurs.

Thanks - wasn't sure if the incorrectness was transient or not, so your clarification helps.

(In reply to Milan Sreckovic [:milan] from comment #1) > This is Windows 8, 32-bit, seemingly running Cairo. Now, we could just be > talking about performance issues, resizing the window in software may very > well be expensive enough to just show white until we catch up. Hard to tell > without a way to reproduce it. > > Bas, can you quickly check if you're seeing something like this on your > laptop when you force software mode? I don't see anything like this, is this still occurring? A screenshot would be helpful but perhaps this is a little long ago.