update README.md about Troubleshooting.

ArduCAM · Jul 3, 2023 · 5e84900 · 5e84900
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diff --git a/README.md b/README.md
@@ -54,4 +54,18 @@ python3 ArduCam_Demo.py -v --preview-width 1280 -f <path for camera cfg>
 python3 ArduCam_Demo.py -v --preview-width 1280 -f IMX477/4032x3040/IMX477_2Lane_4032x3040_RAW8_A.cfg
 ```
 
-**Note: Configuration files can be found here: [ArduCAM_USB_Camera_Shield](https://github.com/ArduCAM/ArduCAM_USB_Camera_Shield/tree/master/Config)**
+**Note: Configuration files can be found here: [ArduCAM_USB_Camera_Shield](https://github.com/ArduCAM/ArduCAM_USB_Camera_Shield/tree/master/Config)**
+
+## Troubleshooting
+
+When using the camera under **Linux**, there may be `Error beginning capture, rtn_val = 65312`
+
+![error_65312](resources/images/error/error_65312.png)
+
+This error may be caused by insufficient buffer of usbfs. You can solve this problem by increasing usbfs_memory_mb,
+
+Example:
+Set usbfs_memory_mb to 32 (default 16)
+```
+sudo sh -c 'echo 32 > /sys/module/usbcore/parameters/usbfs_memory_mb'
+```
diff --git a/resources/images/error/error_65312.png b/resources/images/error/error_65312.png