Bug 197141 – [GTK] webview remains blank on x86 if hardware acceleration policy is "always"

• Component: WebKitGTK
• Status: NEW

Created attachment 367892 [details]
testing program

On an x86 PC, the webview widget remains blank (all white) if the hardware acceleration policy is "always", but shows the actual content of the web page if changed to "never".

See enclosed program.

A similar issue has been reported on arm: https://github.com/luakit/luakit/issues/773
(issue is closed only because turning off the hardware acceleration policy is a "fix").

debian:libwebkit2gtk-4.0-37:i386 2.18.6-1~deb9u1

[Carlos Garcia Campos]

I can't reproduce it with 2.24.1

[Michael Catanzaro]

It's obviously hardware-specific. We'll need to buy whatever graphics hardware sgerwk is using.

Or if it's a VM, that would be good to know. I believe this bug occurs in all VMWare VMs, for instance. Nobody ever bothered to report it here, but VMWare is why gnome-online-accounts wound up turning off AC mode.

Some more details: I tested luakit and my testing program on two different machines with two different video cards:

- VGA compatible controller: Intel Corporation 82845G/GL[Brookdale-G]/GE Chipset Integrated Graphics Device (rev 01)

- VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] RV100/M6 [Rage/Radeon Mobility Series]

Both computers are x86, so the problem may be related to them being 32 bits, or maybe they lack the required hardware acceleration features? I don't know which arm hardware had the same problem, but I may ask.

[Michael Catanzaro]

(In reply to sgerwk from comment #0)
> debian:libwebkit2gtk-4.0-37:i386 2.18.6-1~deb9u1

Oh I missed this... yes, it's probably related to i386 architecture.

When you said x86, I just assumed x86_64.

[Andrew]

I'm still affected by this bug in Webkit 2.42.4 using both Luakit and Nyxt browsers. I'm ready to provide any additional information and/or conduct any tests needed.