# Linux build 117206 **URL:** \ **Category:** Delores Engine\ **Created:** [September 14, 2020, 10:26pm UTC](https://forums.thimbleweedpark.com/t/linux-build-117206/4495 "2020-09-14T22:26:56Z")\ **Posts on this page:** 1\ **Showing post:** 10
**Author:** ![flesk](https://yyz2.discourse-cdn.com/flex030/user_avatar/forums.thimbleweedpark.com/flesk/32/12831_2.png) [@flesk](https://forums.thimbleweedpark.com/u/flesk)\ **Post date:** [September 14, 2020, 11:19pm UTC](https://forums.thimbleweedpark.com/t/linux-build-117206/4495/10 "2020-09-14T23:19:57Z")
I get pop-up saying: ```auto Critical Error! ZLOpenGLShader: Failed to compile vertex shader ``` when I try to launch the game from the Steam client. The error seems to come from my system, since I get the same pop-up when running the game from the command line, and the following output to terminal: ```auto [00:39:37] RELEASE [00:39:37] RELEASE FINAL Using language file: Translations_en.tsv Running boot.dinky... [00:39:37] ZLRenderTarget: Failed to create frame buffer (error 0) [00:39:37] ZLRenderTarget: Failed to create a complete framebuffer (status 0) [00:39:37] ZLOpenGLShader: Failed to compile vertex shader ``` This is on an Optimus laptop, however, and when I launch the game with the integrated graphics, it works just fine. My specs are as follows: ```auto Host: pop-os Kernel: Linux 5.4.0-7634-generic x86_64 Distro: Pop!_OS 20.04 LTS CPU: Intel(R) Core(TM) i7-8750H CPU @ 2.20GHz 12 cores/threads 4100.00 MHz RAM: 7.50 GiB GPU: GeForce GTX 1060/PCIe/SSE2 OpenGL/core 4.6.0 NVIDIA 440.100 GLSL/core 4.60 NVIDIA OpenGL 4.6.0 NVIDIA 440.100 GLSL 4.60 NVIDIA GPU: Mesa Intel(R) UHD Graphics 630 (CFL GT2) OpenGL/core 4.6 (Core Profile) Mesa 20.0.8 GLSL/core 4.60 OpenGL 4.6 (Compatibility Profile) Mesa 20.0.8 GLSL 4.60 Screen: 1920x1080 WM/DE: pop:GNOME ``` --- _[View the full topic](https://forums.thimbleweedpark.com/t/linux-build-117206/4495)._