Let me recap the situation with the new information: I verified the MCP2518FD using manually applied RT patches on Kernel 6.6 (Debian) and Kernel 6.12 (Debian), with PREEMPT_RT enabled in the build configuration. While using Ubuntu, I relied on the Preempt RT kernels provided by the Ubuntu Pro subscription. Since there is no official PREEMPT_RT kernel available for Ubuntu 25.04 and Kernel 6.14, I was unable to test under the PREEMPT_RT configuration.
This initially led me to assume that there was a dependency on the kernel releases. However, from a new perspective, it seems more likely that the RT patch is causing the issue. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2109529 Title: MCP251xFD Driver Failure on Ubuntu with CAN Interface To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-raspi/+bug/2109529/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
