[resolved] Failed to initialize video Backend! [Linux/Debian/Intel]

[jaileleu]

Hello!

I've just build my own dolphin, as I'm running a stable Wheezy debian, and the .deb provided on the official site have dependencies I can not fullfill.
The build run smoothly (even if I had to play a little with my packages and the backports repo to have libsdl1.2-dev for my pad, this is now ok).

But when I try to run a game (whenever it is, I've tried 3 different ones), I get a error alert "Failed to initialize video Backend!" and then nothing happens.
This happens whenever I choose OpenGL or Software Renderer in the Graphic configuration.

I copy paste the reference of my hardware/Os :

Code:

Operating System: Linux Debian Wheezy x64
Processor/CPU: Intel Core i3
Video Card/GPU: Intel Ivy Bridge HD4000
Memory/RAM: 8GB
Dolphin Revision Currently Using: 4.0-4867 x64

and as this will be asked :

Code:

$ glxinfo | grep OpenGL
OpenGL vendor string: Tungsten Graphics, Inc
OpenGL renderer string: Mesa DRI Intel(R) Ivybridge Mobile
OpenGL version string: 3.0 Mesa 8.0.5
OpenGL shading language version string: 1.30

I suspect something within my OpenGL config, but I have no clue.

Any help would be welcome !

[Armada]

Could you try build 4.0-4824: https://dolphin-emu.org/download/dev/a86865d1c42baced251204f1474bed65727637bc/

Quote:<degasus> Armada: we require at least mesa9

[degasus]

Mesa 8 doesn't have ARB_uniform_buffer_object support iirc. You can still use dolphin 4.0, but I suggest to update your mesa version (+linux). The performance will be much better.

edit: didn't you get this error: https://github.com/dolphin-emu/dolphin/blob/master/Source/Core/VideoBackends/OGL/Render.cpp#L422

edit2: iirc mesa 9.2 or newer is needed because of a bug in their ubo implementation

[jaileleu]

Is there a way to update mesa easily without breaking all my OS stack ?
I like the stable debian philosophy

Edit : With the build 4.0-4824, the error is indeed :

Code:

GPU: OGL ERROR: Need GL_ARB_uniform_buffer_object.
GPU: Does your video card support OpenGL 3.1?

[degasus]

Maybe :/ You can always try to backport mesa on your own, but the testing package likely has some non-trivial dependencies. Maybe it's possible to compile it on your own.

If you want it the debian stable way, just pick dolphin 4.0 and use the (much) slower but stable version. Dolphin is well known for using cutting edge features, so current development versions have lots of up-to-date requirements.

[jaileleu]

ok thanks
when you talked about 4.0, I didn't get you were talking about the release version, for me 4.0-4824 were still a 4.0

Works fine indeed with compiled version of Release 4.0.2