Here's a detailed troubleshooting guide for the get-edid command on a Dell 2007FP display:
Troubleshooting get-edid Command on Dell 2007FP Display
1. Introduction
The get-edid command is a useful tool for retrieving Extended Display Identification Data (EDID) from a display. This data provides essential information about the display's capabilities, such as its maximum resolution and supported refresh rates. However, users might encounter issues while using this command on a Dell 2007FP display.
2. Prerequisites
Ensure you have the necessary tools installed:
- i2c-tools package:
sudo apt-get install i2c-tools get-edidutility:sudo apt-get install get-edid
3. Running the get-edid Command
To run the get-edid command, open a terminal and type:
sudo get-edid-b3 | parse-edid3 read-edid-version 3.0.2
4. Prepare Fun
The output will start with "Prepare fun." This indicates that the utility is attempting to use the i2c interface to communicate with the display.
5. Attempting Use i2c Interface
The command will then attempt to use the i2c interface. If the interface is not working correctly, you might see an error message like this:
i2c-dev: no such file or directory
If this happens, make sure the i2c interface is enabled in your kernel configuration.
6. Error Messages
If the command fails to retrieve the EDID data, you might see error messages like these:
i2c_smbus_read_byte_data: Error -110 reading byte data from 0x39
Such errors can be caused by various factors, such as a faulty cable, incorrect i2c address, or a hardware issue with the display.
7. Troubleshooting Steps
- Check the Cable: Ensure the DVI cable is properly connected to both the display and the graphics card.
- Check the i2c Address: The i2c address for the Dell 2007FP display is usually 0x39. If you're using a different address, make sure it's correct.
- Check the Display: If the display is faulty, you might need to replace it.
- Check the Graphics Card: If the issue persists, it might be a problem with the graphics card. Try connecting the display to a different graphics card, if possible.
8. Resources
For more information, refer to:
Summary
This guide provided a troubleshooting guide for the get-edid command on a Dell 2007FP display. If you encounter issues while retrieving EDID data, follow the steps outlined above to diagnose and resolve the problem.