Hi all let me clarify this bug a little bit more. I just verified it again on a clean Ubuntu 24.04 Server image with Kernel 6.8.0-2019-raspi-realtime received via Ubuntu Pro Subscription. There is also some RT optimization done on that system: /boot/firmware/cmdline.txt: console=serial0,115200 multipath=off dwc_otg.lpm_enable=0 console=tty1 root=LABEL=writable rootfstype=ext4 rootwait fixrtc rcu_nocb_poll rcu_nocbs=2-3 audit=0 watchdog=0 skew_tick=1 kthread_cpus=0-1 irqaffinity=0-1 isolcpus=managed_irq,domain,2-3
The error, which could be seen here together with Codesys is: [ 379.824205] mcp251xfd spi0.0 can0: IRQ handler mcp251xfd_handle_tefif() returned -22. [ 379.824244] mcp251xfd spi0.0 can0: IRQ handler returned -22 (intf=0x3f1a8010). As described in the introduction by Bugra. This error is not present on Kernel 6.6 and 6.12 and later. I gonna add the apport information of this system beneath my comment. My apologies for the confusion. The other system had still the backported MCP251xFD kernel module included. -- 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 ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
