https://bugzilla.kernel.org/show_bug.cgi?id=219055
--- Comment #8 from Bill McDonough (wil...@gmail.com) --- (In reply to En-Wei Wu from comment #7) > Hi @Bill, > > It seems like the problem is strongly related to the error message in: > > [ 5.860144] ucsi_acpi USBC000:00: failed to reset PPM! > [ 5.860150] ucsi_acpi USBC000:00: error -ETIMEDOUT: PPM init failed > > However, the clue is not that clear. Could you please try the following > steps to help us get more debug info: > 1. Blacklist the ucsi_acpi.ko and boot > 2. Login as root, then $ echo 'file ucsi.c +p' > > /sys/kernel/debug/dynamic_debug/control > 3. Load the ucsi_acpi.ko > 4. Dump the dmesg here > > En-Wei. 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 may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug. _______________________________________________ acpi-bugzilla mailing list acpi-bugzilla@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/acpi-bugzilla
