Cannot Connect To Redroid (device Offline)

Mar 9, 2025 by ADMIN 43 views

Cannot Connect to Redroid (Device Offline)

Connecting to a Redroid device can be a frustrating experience, especially when you encounter issues like "device offline." In this article, we will explore the possible causes of this problem and provide a step-by-step guide to troubleshoot and resolve the issue.

Before we dive into the troubleshooting process, it's essential to understand the environment in which we are working. Our setup consists of:

Operating System: Arch Linux
Kernel: Linux 6.13.5-zen1-1-zen
CPU: 12th Gen Intel(R) Core(TM) i7-12700KF (20) @ 5.00 GHz
GPU: NVIDIA GeForce RTX 3070 Ti (Discrete)
Docker: Docker version 28.0.1, build 068a01ea94

The symptoms of the issue are:

ADB Connection Failure: When trying to connect to the Redroid device using ADB, we encounter the following error:

$ adb connect localhost:5555
* daemon not running; starting now at tcp:5037
* daemon started successfully
failed to connect to localhost:5555

$ adb connect localhost:5555
already connected to localhost:5555

Scrcpy Connection Failure: When trying to connect to the Redroid device using Scrcpy, we encounter the following error:

$ scrcpy -s localhost:5555 --audio-codec=raw --print-fps -b 2048m --audio-bit-rate=2048m

scrcpy 3.1 <https://github.com/Genymobile/scrcpy>
WARNING: --audio-bit-rate is ignored for raw audio codec
ERROR: Device could not be connected (state=offline)
ERROR: Server connection failed

Binder Module Loaded: The binder module is loaded properly, as indicated by the following command:

$ grep binder /proc/filesystems 
nodev	binder

The command used to start the Redroid container is:

sudo docker run -d --privileged  \               
  -v /data/android_mount:/data   \
  -p 5555:5555  \
  --name redroid11   \
  redroid/redroid:11.0.0-latest   \
  androidboot.redroid_width=2560   \
  androidboot.redroid_height=1080   \
  androidboot.redroid_gpu_mode=host   \
  androidboot.redroid_dpi=480 \
  androidboot.redroid_fps=120  \
  androidboot.use_memfd=true

To troubleshoot the issue, we will follow these steps:

Step 1: Check the Docker Logs

The first step is to check the Docker logs to see if there are any errors or warnings that might indicate the cause of the issue. We can do this by running the following command:

docker logs -f redroid11

This will print the logs of the Redroid container to the console.

Step 2: Check the ADB Logs

The next step is to check the ADB logs to see if there are any errors or warnings that might indicate the cause of the issue. We can do this by running the following command:

adb logcat

This will print the ADB logs to the console.

Step 3: Check the Scrcpy Logs

The next step is to check the Scrcpy logs to see if there are any errors or warnings that might indicate the cause of the issue. We can do this by running the following command:

scrcpy -s localhost:5555 --audio-codec=raw --print-fps -b 2048m --audio-bit-rate=2048m

This will print the Scrcpy logs to the console.

Step 4: Check the System Logs

The next step is to check the system logs to see if there are any errors or warnings that might indicate the cause of the issue. We can do this by running the following command:

dmesg

This will print the system logs to the console.

Step 5: Check the Process List

The next step is to check the process list to see if there are any processes that might be causing the issue. We can do this by running the following command:

ps -ef

This will print the process list to the console.

In conclusion, the issue of "device offline" when connecting to a Redroid device can be caused by a variety of factors, including errors in the Docker logs, ADB logs, Scrcpy logs, system logs, and process list. By following the troubleshooting steps outlined in this article, we can identify and resolve the issue.

For additional resources on troubleshooting and resolving the issue, please refer to the following:

dmesg.log
ps.log
Cannot Connect to Redroid (Device Offline) - Q&A

In our previous article, we explored the possible causes of the "device offline" issue when connecting to a Redroid device. In this article, we will provide a Q&A section to help you troubleshoot and resolve the issue.

A: The "device offline" issue can be caused by a variety of factors, including errors in the Docker logs, ADB logs, Scrcpy logs, system logs, and process list.

A: To check the Docker logs, run the following command:

docker logs -f redroid11

This will print the logs of the Redroid container to the console.

A: To check the ADB logs, run the following command:

adb logcat

This will print the ADB logs to the console.

A: To check the Scrcpy logs, run the following command:

scrcpy -s localhost:5555 --audio-codec=raw --print-fps -b 2048m --audio-bit-rate=2048m

This will print the Scrcpy logs to the console.

A: To check the system logs, run the following command:

dmesg

This will print the system logs to the console.

A: To check the process list, run the following command:

ps -ef

This will print the process list to the console.

A: Some common errors that can cause the "device offline" issue include:

Docker logs: Errors in the Docker logs can indicate issues with the Redroid container, such as failed to start or failed to connect.
ADB logs: Errors in the ADB logs can indicate issues with the ADB connection, such as failed to connect or failed to authenticate.
Scrcpy logs: Errors in the Scrcpy logs can indicate issues with the Scrcpy connection, such as failed to connect or failed to authenticate.
System logs: Errors in the system logs can indicate issues with the system, such as failed to start or failed to connect.
Process list: Errors in the process list can indicate issues with the processes running on the system, such as failed to start or failed to connect.

A: To resolve the "device offline" issue, follow these steps:

Check the Docker logs for errors.
Check the ADB logs for errors.
Check the Scrcpy logs for errors.
Check the system logs for errors.
Check the process list for errors.
Restart the Redroid container.
Restart the ADB connection.
Restart the Scrcpy connection.

In conclusion, the "device offline" issue can be caused by a variety of factors, including errors in the Docker logs, ADB logs, Scrcpy logs, system logs, and process list. By following the troubleshooting steps outlined in this article, you can identify and resolve the issue.

For additional resources on troubleshooting and resolving the issue, please refer to the following: