[qtmoko v44 sd card] screen dimms even QX settings should prevent this

[robin]

hi 

does anyone know if there is another possibility to prevent screen dimming
for a qx application (it is navit in my case). Activating "Prevent screen
dimmming" in the app settings still allows the screen to dim approx after 
15 minutes. This is somewhat bad for car navigation ;-( .

best regards

robin