From 3f44096a1fb0f8511cb3edb2388c06a095f86a9f Mon Sep 17 00:00:00 2001
From: Drew Haven <periodic@blazestar.net>
Date: Thu, 9 Jul 2026 16:57:04 -0700
Subject: [PATCH] [Altair] Disable device auto-sleep for xpadneo/bluetooth.

---
 system/hosts/altair/hardware-configuration.nix | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/system/hosts/altair/hardware-configuration.nix b/system/hosts/altair/hardware-configuration.nix
index cecac5f..6e5d418 100644
--- a/system/hosts/altair/hardware-configuration.nix
+++ b/system/hosts/altair/hardware-configuration.nix
@@ -34,9 +34,11 @@
     extraModulePackages = [ ];
 
     # disable_ertm is required for xpadneo to connect properly and establish a
-    # data connection.
+    # data connection.  enable_autosuspend is to prevent Linux from putting the
+    # BT radio to sleep and causing a disconnect.
     extraModprobeConfig = ''
       options bluetooth disable_ertm=1
+      options btusb enable_autosuspend=0
     '';
   };