From 37eee321e5fe6b6409c31f2753aa549d36456ccc Mon Sep 17 00:00:00 2001
From: Brandon Thomas <echelon@gmail.com>
Date: Sat, 16 Jan 2021 00:25:32 -0500
Subject: [PATCH] set to use one camera, add Grub instructions

---
 README.md   | 17 +++++++++++++++++
 src/main.rs |  2 +-
 2 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/README.md b/README.md
index 36e3d17224..9d2947caad 100644
--- a/README.md
+++ b/README.md
@@ -37,6 +37,23 @@ sudo apt install k4a-tools
 sudo apt install libk4a1.1-dev
 ```
 
+Modify this:
+
+```
+sudo sh -c 'echo 2047 > /sys/module/usbcore/parameters/usbfs_memory_mb'
+```
+
+Grub bootloader modifications:
+
+```
+sudo vi /etc/default/grub
+```
+
+Then modify this directive to add the following:
+
+```
+GRUB_CMDLINE_LINUX_DEFAULT="[KEEP EXISTING PARTS THE SAME] usbcore.usbfs_memory_mb=2047"
+```
 
 
 Ubuntu 20.04 LTS Support
diff --git a/src/main.rs b/src/main.rs
index 58d32d6965..abcbae5bf7 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -110,7 +110,7 @@ pub fn main() -> AnyhowResult<()> {
   };
 
   let capture_provider: Arc<dyn CaptureProvider> = if opts.enable_cameras {
-    let multi_device = MultiDeviceCapturer::new(2, Some(1))
+    let multi_device = MultiDeviceCapturer::new(1, Some(1))
         .expect("multi-device create");
 
     multi_device.start_cameras().expect("start cameras");