Choppy graphics on Ubuntu.

[legoman_86]

Hello Dolphin forums,

I've recently installed Dolphin. My machine details are as follows:
OS: Ubuntu 18.04 x64
Processor: AMD® Fx™-6100 six-core processor × 6
Video card/GPU: AMD® Cedar  Mobility Radeon HD 5430
RAM: 8GB
Dolphin version: 5.0 64 bit

On to the problem. When I run a game, the sound is very choppy and the framerate slows down when anything interesting happens. In the graphics options, I have the resolution set to "Native 640x528, Anti-alising to none, Anisotropic filtering to 1X. The only backend I have available is OpenGL.

Would getting Vulkan working help this? Are there other backends that I can try? I'm not experienced in playing around with graphics drivers, so I'm not sure where to go from here.

I've installed Vulkan, but when I try vulkaninfo, I get this error:

Code:

===========
VULKAN INFO
===========

Vulkan Instance Version: 1.1.70

ERROR: [Loader Message] Code 0 : /usr/lib/i386-linux-gnu/libvulkan_intel.so: wrong ELF class: ELFCLASS32
ERROR: [Loader Message] Code 0 : /usr/lib/i386-linux-gnu/libvulkan_radeon.so: wrong ELF class: ELFCLASS32
/build/vulkan-UL09PJ/vulkan-1.1.70+dfsg1/demos/vulkaninfo.c:2700: failed with VK_ERROR_INITIALIZATION_FAILED

which is odd, since I'm on a 64 bit machine. I tried replacing the i386-linux-gnu libraries with the ones in x86_64-linux-gnu. The wrong ELF class errors disappeared, but the VK_ERROR_INITIALIZATION_FAILED error persisted.

Thank you in advance for your help. I look forward to having fun with this!

[ExtremeDude2]

Your CPU has very poor performance in dolphin. Changing graphics backends probably isn't going to help.

[legoman_86]

(01-22-2022, 09:10 AM)ExtremeDude2 Wrote: Your CPU has very poor performance in dolphin. Changing graphics backends probably isn't going to help.

Well, that's a bummer. Thanks for the reply.

[Neui]

According to some tables in https://en.wikipedia.org/wiki/List_of_AMD_graphics_processing_units#Mobility_Radeon_HD_5000_series (and at the top "API Overview") it looks like no drivers supports Vulkan with your graphics card. So unfortunately you can't use it. The "wrong ELF class: ELFCLASS32" also happens on my system, but it then displays the working ones (for my gpu and llvmpipe)