Assertion failed when starting build

Platforms Linux
1

Hello,

on ubuntu 22.04 i executed game cooker. Preview in editor works.

When i try to execute the built executable it yields:

"Assertion failed, GPUSwapChainVulkan.cpp, Line:209

Expression: surfaceFormatsCount > 0"

The card is nvidia MX150

What can i do?

2

It looks like Vulkan API vkGetPhysicalDeviceSurfaceFormatsKHR returns invalid amount of presentable surface formats. I suspect itā€™s old video driver. Could you run Debug build of Flax Editor and attach log file? Also, updating GPU driver to NVIDIA Proprietary might help (eg. version 520).

3

Hello mafiesto4, thank you for your help.

nvidia-smi yields:

Ā±----------------------------------------------------------------------------+
| NVIDIA-SMI 525.78.01 Driver Version: 525.78.01 CUDA Version: 12.0 |
|-------------------------------Ā±---------------------Ā±---------------------+
| GPU Name Persistence-M| Bus-Id Disp.A | Volatile Uncorr. ECC |
| Fan Temp Perf Pwr:Usage/Cap| Memory-Usage | GPU-Util Compute M. |
| | | MIG M. |
|===============================+======================+======================|
| 0 NVIDIA GeForce ā€¦ Off | 00000000:01:00.0 Off | N/A |
| N/A 62C P0 N/A / N/A | 945MiB / 4096MiB | 55% Default |
| | | N/A |
Ā±------------------------------Ā±---------------------Ā±---------------------+

Ā±----------------------------------------------------------------------------+
| Processes: |
| GPU GI CI PID Type Process name GPU Memory |
| ID ID Usage |
|=============================================================================|
| 0 N/A N/A 1342 G /usr/lib/xorg/Xorg 467MiB |
| 0 N/A N/A 3468 G xfwm4 1MiB |
| 0 N/A N/A 6322 G ā€¦777929671656322754,131072 197MiB |
| 0 N/A N/A 92089 G /usr/bin/evolution 1MiB |
| 0 N/A N/A 110883 C+G ./FlaxEditor 274MiB |
Ā±----------------------------------------------------------------------------+

lspci yields:

01:00.0 3D controller: NVIDIA Corporation GP108M [GeForce MX150] (rev a1)

The editor is not really the problem, it works well. Problem arises when i try to execute a FlaxGame binary created from the editor with Game Cooker.

I built FlaxGame in Debug mode from a Debug executable of the editor, but i cant see a log file from FlaxGame and there is no output on the console. Same when i execute the BasicTemplate next to it.

Is there a way to get a log file from a binary?

4

You can run built game with -log commandline to print the log to the console. More info: Command line access | Flax Documentation

5

Thank you, i used the -std flag, i think that is what you meant. One of the lines it yielded was:

[ 00:00:00.333 ]: [Info] Graphics Device created! Adapter: ā€˜Intel(R) UHD Graphics 620 (KBL GT2)ā€™, Renderer: Vulkan, Shader Profile: Vulkan SM5, Feature Level: SM5

So it chose the intel gpu in my laptop. That is interesting, because i set to always use the nvidia gpu via prime command line and also in the ā€œNvidia X Server Settingsā€.

Running it with the ā€œ-nvidiaā€ flag like so: ā€œ./BasicTemplate -nvidiaā€ instantly solved the problem and it started without any problems.

3 Likes