brush tool does not work

[floor15A7]

Hi there,

I just got started with LrC. All works fine but for one tool: the brush tool.

When I create a new mask, scroll over a certain area to do my local adjustments and hit apply nothing happens.

Also the overlaymasking to show me where I'm adjusting is not working.

The other filters are working fine.

Curious what I'm doing wrong!

[Axel Matt · Accepted solution]

The first thing that you should try is to switch off the GPU support from the Lightroom preferences and check if that helps to fix the issue. 

Go to Lightroom > Preferences > Performance tab > Uncheck "Use Graphics Processor" > Restart Lightroom. 

https://helpx.adobe.com/lightroom-classic/kb/lightroom-gpu-faq.html#troubleshooting 

https://helpx.adobe.com/lightroom-classic/kb/troubleshoot-gpu.html 

  

If Lightroom doesn't start correctly the please see "Solution 2" in the document behind the second link. 

  

Another step is to try to reset the Lightroom preferences. 

https://www.lightroomqueen.com/how-do-i-reset-lightrooms-preferences/ 

  

If this doesn't help we need more informations about your environment. 

• Which operating system do you use? 
• Which version of Lightroom do you use? 

Please post the exact version and not only phrases as "recent", "latest" and so on. 

[Sandy28112375ek7v]

My System : Apple M2 chip

• 8-core CPU with 4 performance cores and 4 efficiency cores
• 10-core GPU
• 16-core Neural Engine
• 100GB/s memory bandwidth

LR-Classic 12.1 Camera Raw - Photoshop 24.1.1

[floor15A7]

Great Axel,

resetting Lr settings did the job.

Thanks so much👍!!