# Laser Frustrations and bugs

**URL:** <https://forum.snapmaker.com/t/laser-frustrations-and-bugs/39366>\
**Category:** Snapmaker 2.0 (3-in-1)\
**Created:** [May 3, 2025, 4:58pm UTC](https://forum.snapmaker.com/t/laser-frustrations-and-bugs/39366 "2025-05-03T16:58:37Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![Aaron.F](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.snapmaker.com/aaron.f/32/29077_2.png) [@Aaron.F](https://forum.snapmaker.com/u/Aaron.F)\
**Post date:** [May 9, 2025, 1:07pm UTC](https://forum.snapmaker.com/t/laser-frustrations-and-bugs/39366/4 "2025-05-09T13:07:01Z")

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With newer Snapmaker Firmware you do need to use the GRBL Device Profile.

The “Snapmaker (Marlin)” Device profile was made for older Firmware versions when they were still Marlin-based.

Snapmaker posted newer .LBDEV files [here](https://wiki.snapmaker.com/en/general/manual/use_ray_with_lightburn_guide).

These device profiles have an error:  
You must activate ‘Emit S Value with every G1 Command’ in the Device Settings:

 ![image](https://us1.discourse-cdn.com/flex022/uploads/snapmaker/original/3X/2/e/2ee3f3318cc69c6afeda7dcc1fbaeaa031670021.jpeg)

See this post for more info:

> [@Full Lightburn Control Guide](https://forum.snapmaker.com/t/full-lightburn-control-guide/27638/439):
>
> Hi Everyone! LightBurn chiming in here. It appears that with a recent firmware update, all Snapmaker devices (not the Ray, which already was GRBL) now present as GRBL devices, rather than Marlin. This has the lovely benefit of breaking comms with LightBurn until a new device is created. Any Snapmaker devices currently using the Snapmaker Device Profile or Marlin device profile in LightBurn will no longer work after this firmware update. LightBurn users need to be especially aware that if you w…

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