Anyway, what's with the codecs? They generally do not work or just some specific files you've came across?

They just won't work, no matter the page I visit. Wherever there's an embedded mp3 or h.264 file, I cannot play it. I've already created a thread about it, but I could't find a solution.

Nothing regarding the Express Chipset. It says something about the driver version, but it's not related to WebGL.
Here's what it says: ''Accelerated video decode interferes with GPU sandbox on older Intel drivers''.

There are no new updates for the driver and I don't care about the hardware-accelerated video decode, but it seems that WebGL is supposed to work for me and it isn't. BTW, I'm still experiencing problems with proprietary media codecs.

Thanks! It worked (partially). Most of the features listed are hardware accelerated now, but for some reason, WebGL isn't working :awww: . However, I used the same method with Chrome (which had been having the same problem since the update to v46) and it worked flawlessly. Now I know where the problem comes from .

I've cleared all browsing data (History, Cache, Cookies...) several times and that hasn't solved the problem. Something is preventing the GPU process from booting during the startup. I'd be happy if I could find a workaround.

Today is 10/16/2015. The problem hasn't been solved yet. The browser's GPU process is not working since version 28 and it seems there's no solution for this. Chrome is the only Chromium-based browser in which hardware acceleration is working for me.

Thanks for your replies, guys.

@Lando242, I did a clean install, but that didn't work. I checked the option ''Delete my Opera user data'' in the uninstaller and went to the profile directory to make sure the folder was deleted (and yes, it was).

@L33t4opera, I already have that flag enabled. It was working before the update, now it has no effect.

My guess is that something is preventing the GPU process to be launched on Opera's startup. As I said: only Opera 28 and 29 are affected (for now), so I assume that it's some kind of unidentified bug inside the browser's code. That would explain why the flag doesn't work and why the GPU process is not listed under the task manager.

Intel Express Chipset Family,
Driver version: 8.15.10.1930.

I don't think this problem comes from the driver version (because it's updated), everything was working before the update to Opera 28, Chrome and other Blink-based browsers aren't affected, only Opera (v28 and v29 Dev).

Additional Information:

OS: Windows 7 Home Premium SP1 (x86).
Aero Glass: Enabled.
There are no new updates for the driver.

Opera://GPU Diagnostic:

Can anyone explain me why I'm getting this message from the Opera:GPU page? It started happening after the update to Opera 28.

The whole Opera UI is extremely slow, the performance on the web pages is terrible and all the features that use hardware acceleration (like WebGL) are unavailable, because ALL the browser is software-accelerated.

I think this thread is a duplicate of: http://forums.opera.com/topic/6990/1080p-on-youtube

All of them are great ad-blockers, but I prefer AdGuard, because it has the best phishing protection I've ever seen in a product of it's category. Also, it consumes less RAM than the best-known extensions like AdBlock Plus and AdBlock. But I must say: if the phishing protection isn't that necessary for you, uBlock is the best choice.