Merge pull request #59 from gonX/linux-faq-art-programs

Add GIMP instructions to Linux App FAQ

Author: gonX

site/_wiki/FAQ/LinuxAppSpecific.md

@@ -23,3 +23,31 @@ env SDL_VIDEODRIVER=wayland ./osu.AppImage
 ```bash
 env SDL_VIDEODRIVER=wayland osu-lazer
 ```
+
+---
+
+## Art Programs {#art}
+
+Firstly, make sure your output mode is [set to Artist Mode]({% link _wiki/FAQ/Linux.md %}#artist-mode)
+
+You can confirm the setting is applied by running the following command and
+verifying that at least 1 listed device contains 'Artist' in the name:
+
+```bash
+libinput list-devices | grep -i OpenTabletDriver
+```
+
+If your program still does not work after ensuring the output mode has been set in the driver, please read on.
+
+### GIMP 2 {#gimp2}
+
+1. Go to 'Edit -> Input Devices' in the GIMP Toolbar
+2. Make sure any of the devices matching the following settings are set to 'Mode: Screen' in the right hand panel
+    - `Core Pointer`
+    - `xwayland-tablet eraser`, if present
+    - `xwayland-tablet stylus`, if present
+    - `OpenTabletDriver Virtual Artist Tablet Pen`, if present and on X11
+    > Any devices not in the list above should have their Mode set to Disabled
+3. Ensure your chosen tool supports pressure
+    - Most tools support this by using the 'Basic Dynamics' Dynamic profile in the Tool Options Dialog
+    > If you can't find the tool options, they can be found in 'Windows -> Dockable Dialogs -> Tool Options' in the GIMP Toolbar