More verbose and thorough checks for gfx switching

- Small fixes
- Cleanup bios help
- g-sync warnings on toggling

daemon/src/ctrl_gfx/mod.rs

@@ -11,6 +11,8 @@ const DISPLAY_MANAGER: &str = "display-manager.service";
 const MODPROBE_PATH: &str = "/etc/modprobe.d/asusd.conf";
 
 static MODPROBE_BASE: &[u8] = br#"# Automatically generated by asusd
+# If you have issues with i2c_nvidia_gpu, copy the 2 lines below to a
+# new blacklist file and uncomment
 #blacklist i2c_nvidia_gpu
 #alias i2c_nvidia_gpu off
 blacklist nouveau