📅 最后修改于: 2023-12-03 15:17:58.768000 🧑 作者: Mango
If you are a software developer working with Linux graphics drivers, you may encounter the following error message: "nouveau 0000:01:00.0: bus: MMIO read of 00000000 FAULT at 022554". This error message is related to the Nouveau graphics driver, which is an open source driver for NVIDIA graphics cards.
The error message indicates that there was a memory mapping input/output (MMIO) read operation that resulted in a fault at the address 022554. MMIO is a mechanism that allows hardware devices to access memory directly without involving the CPU. When a driver initiates an MMIO read operation, the hardware device reads data from the specified address in memory and returns the result to the driver.
In this case, the MMIO read operation resulted in a fault, which means that the hardware device was unable to read data from the specified address in memory. This could be due to a variety of reasons, such as a hardware malfunction, incorrect memory mapping, or an invalid memory address.
If you encounter this error message while working with the Nouveau driver, there are several steps you can take to troubleshoot the issue:
Check the hardware: Make sure that your NVIDIA graphics card is properly installed and functioning correctly. Check for any hardware malfunctions or connectivity issues.
Update the driver: Make sure that you are using the latest version of the Nouveau driver. Check for any available updates and install them if necessary.
Check the memory mapping: Verify that the memory mapping for the specified address is correct. If the memory address is invalid, this could result in a fault during an MMIO read operation.
Contact the Nouveau community: If you are unable to resolve the issue on your own, reach out to the Nouveau community for assistance. They may be able to provide additional troubleshooting steps or guidance on how to resolve the issue.
The "MMIO read of 00000000 FAULT at 022554" error message in the Nouveau graphics driver indicates a fault during an MMIO read operation. This could be due to a variety of reasons, such as a hardware malfunction, incorrect memory mapping, or an invalid memory address. If you encounter this error message, follow the troubleshooting steps outlined above to resolve the issue.