En-Wei, First, I dropped to root
$ sudo su - I was unable to echo to /sys/kernel/debug # echo 'file ucsi.c +p' > /sys/kernel/debug/dynamic_debug/control -bash: /sys/kernel/debug/dynamic_debug/control: Operation not permitted so I tried /proc instead: # cat /proc/dynamic_debug/control|egrep ucsi drivers/usb/typec/ucsi/ucsi.c:978 [typec_ucsi]ucsi_connector_change =_ "Bogus connector change event\n" drivers/usb/typec/ucsi/ucsi.c:1616 [typec_ucsi]ucsi_register =_ "Registered UCSI interface with version %x.%x.%x" # echo 'file ucsi.c +p' > /proc/dynamic_debug/control # cat /proc/dynamic_debug/control|egrep ucsi drivers/usb/typec/ucsi/ucsi.c:978 [typec_ucsi]ucsi_connector_change =p "Bogus connector change event\n" drivers/usb/typec/ucsi/ucsi.c:1616 [typec_ucsi]ucsi_register =p "Registered UCSI interface with version %x.%x.%x" # modprobe ucsi_acpi # dmesg|egrep ucsi [ 874.792132] ucsi_acpi USBC000:00: Registered UCSI interface with version 1.0.0 [ 879.815432] ucsi_acpi USBC000:00: failed to reset PPM! [ 879.815437] ucsi_acpi USBC000:00: error -ETIMEDOUT: PPM init failed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2073538 Title: kacpi_notify high cpu on interrupt gpe17 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2073538/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
