Messages in this thread | | | Date | Tue, 21 Nov 2023 15:25:59 +0100 | Subject | Re: Unplugging USB-C charger cable causes `ucsi_acpi USBC000:00: ucsi_handle_connector_change: ACK failed (-110)` | From | Paul Menzel <> |
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Dear Heikki,
Thank you for your prompt reply.
Am 21.11.23 um 15:08 schrieb Heikki Krogerus: > On Tue, Nov 21, 2023 at 12:50:43PM +0100, Paul Menzel wrote:
>> On the Dell XPS 13, BIOS 2.21.0 06/02/2022, with Debian sid/unstable and >> Linux 6.5.10, when unplugging the (Dell) USB Type-C charger cable, Linux >> logs the error below: >> >> ucsi_acpi USBC000:00: ucsi_handle_connector_change: ACK failed (-110) >> >> As this is logged with level error, can this be somehow fixed? >> >> drivers/usb/typec/ucsi/ucsi.c: dev_err(ucsi->dev, "%s: ACK failed (%d)", __func__, ret); >> >> Please find the output of `dmesg` attached. > > Thanks. The firmware not reacting to the ACK command is weird, but I'm > not sure if it's critical. Does the interface continue working after > that? Do you see the partner devices appearing under /sys/class/typec/ > when you plug them, and disappearing when you unplug them?
``` $ LANG= grep . /sys/class/typec/port0/device/power_supply/ucsi-source-psy-USBC000\:001/* /sys/class/typec/port0/device/power_supply/ucsi-source-psy-USBC000:001/current_max:0 /sys/class/typec/port0/device/power_supply/ucsi-source-psy-USBC000:001/current_now:0 grep: /sys/class/typec/port0/device/power_supply/ucsi-source-psy-USBC000:001/device: Is a directory grep: /sys/class/typec/port0/device/power_supply/ucsi-source-psy-USBC000:001/hwmon7: Is a directory /sys/class/typec/port0/device/power_supply/ucsi-source-psy-USBC000:001/online:0 grep: /sys/class/typec/port0/device/power_supply/ucsi-source-psy-USBC000:001/power: Is a directory /sys/class/typec/port0/device/power_supply/ucsi-source-psy-USBC000:001/scope:System grep: /sys/class/typec/port0/device/power_supply/ucsi-source-psy-USBC000:001/subsystem: Is a directory /sys/class/typec/port0/device/power_supply/ucsi-source-psy-USBC000:001/type:USB /sys/class/typec/port0/device/power_supply/ucsi-source-psy-USBC000:001/uevent:POWER_SUPPLY_NAME=ucsi-source-psy-USBC000:001 /sys/class/typec/port0/device/power_supply/ucsi-source-psy-USBC000:001/uevent:POWER_SUPPLY_TYPE=USB /sys/class/typec/port0/device/power_supply/ucsi-source-psy-USBC000:001/uevent:POWER_SUPPLY_USB_TYPE=[C] PD PD_PPS /sys/class/typec/port0/device/power_supply/ucsi-source-psy-USBC000:001/uevent:POWER_SUPPLY_ONLINE=0 /sys/class/typec/port0/device/power_supply/ucsi-source-psy-USBC000:001/uevent:POWER_SUPPLY_VOLTAGE_MIN=5000000 /sys/class/typec/port0/device/power_supply/ucsi-source-psy-USBC000:001/uevent:POWER_SUPPLY_VOLTAGE_MAX=5000000 /sys/class/typec/port0/device/power_supply/ucsi-source-psy-USBC000:001/uevent:POWER_SUPPLY_VOLTAGE_NOW=5000000 /sys/class/typec/port0/device/power_supply/ucsi-source-psy-USBC000:001/uevent:POWER_SUPPLY_CURRENT_MAX=0 /sys/class/typec/port0/device/power_supply/ucsi-source-psy-USBC000:001/uevent:POWER_SUPPLY_CURRENT_NOW=0 /sys/class/typec/port0/device/power_supply/ucsi-source-psy-USBC000:001/uevent:POWER_SUPPLY_SCOPE=System /sys/class/typec/port0/device/power_supply/ucsi-source-psy-USBC000:001/usb_type:[C] PD PD_PPS /sys/class/typec/port0/device/power_supply/ucsi-source-psy-USBC000:001/voltage_max:5000000 /sys/class/typec/port0/device/power_supply/ucsi-source-psy-USBC000:001/voltage_min:5000000 /sys/class/typec/port0/device/power_supply/ucsi-source-psy-USBC000:001/voltage_now:5000000 grep: /sys/class/typec/port0/device/power_supply/ucsi-source-psy-USBC000:001/wakeup49: Is a directory ```
Now I unplugged the device, and the error is *not* logged. (I had a USB Type-C port replicator plugged in during the day before.)
The directory is still there:
``` $ LANG= grep . /sys/class/typec/port0/device/power_supply/ucsi-source-psy-USBC000\:001/* /sys/class/typec/port0/device/power_supply/ucsi-source-psy-USBC000:001/current_max:0 /sys/class/typec/port0/device/power_supply/ucsi-source-psy-USBC000:001/current_now:0 grep: /sys/class/typec/port0/device/power_supply/ucsi-source-psy-USBC000:001/device: Is a directory grep: /sys/class/typec/port0/device/power_supply/ucsi-source-psy-USBC000:001/hwmon7: Is a directory /sys/class/typec/port0/device/power_supply/ucsi-source-psy-USBC000:001/online:0 grep: /sys/class/typec/port0/device/power_supply/ucsi-source-psy-USBC000:001/power: Is a directory /sys/class/typec/port0/device/power_supply/ucsi-source-psy-USBC000:001/scope:System grep: /sys/class/typec/port0/device/power_supply/ucsi-source-psy-USBC000:001/subsystem: Is a directory /sys/class/typec/port0/device/power_supply/ucsi-source-psy-USBC000:001/type:USB /sys/class/typec/port0/device/power_supply/ucsi-source-psy-USBC000:001/uevent:POWER_SUPPLY_NAME=ucsi-source-psy-USBC000:001 /sys/class/typec/port0/device/power_supply/ucsi-source-psy-USBC000:001/uevent:POWER_SUPPLY_TYPE=USB /sys/class/typec/port0/device/power_supply/ucsi-source-psy-USBC000:001/uevent:POWER_SUPPLY_USB_TYPE=[C] PD PD_PPS /sys/class/typec/port0/device/power_supply/ucsi-source-psy-USBC000:001/uevent:POWER_SUPPLY_ONLINE=0 /sys/class/typec/port0/device/power_supply/ucsi-source-psy-USBC000:001/uevent:POWER_SUPPLY_VOLTAGE_MIN=5000000 /sys/class/typec/port0/device/power_supply/ucsi-source-psy-USBC000:001/uevent:POWER_SUPPLY_VOLTAGE_MAX=5000000 /sys/class/typec/port0/device/power_supply/ucsi-source-psy-USBC000:001/uevent:POWER_SUPPLY_VOLTAGE_NOW=5000000 /sys/class/typec/port0/device/power_supply/ucsi-source-psy-USBC000:001/uevent:POWER_SUPPLY_CURRENT_MAX=0 /sys/class/typec/port0/device/power_supply/ucsi-source-psy-USBC000:001/uevent:POWER_SUPPLY_CURRENT_NOW=0 /sys/class/typec/port0/device/power_supply/ucsi-source-psy-USBC000:001/uevent:POWER_SUPPLY_SCOPE=System /sys/class/typec/port0/device/power_supply/ucsi-source-psy-USBC000:001/usb_type:[C] PD PD_PPS /sys/class/typec/port0/device/power_supply/ucsi-source-psy-USBC000:001/voltage_max:5000000 /sys/class/typec/port0/device/power_supply/ucsi-source-psy-USBC000:001/voltage_min:5000000 /sys/class/typec/port0/device/power_supply/ucsi-source-psy-USBC000:001/voltage_now:5000000 grep: /sys/class/typec/port0/device/power_supply/ucsi-source-psy-USBC000:001/wakeup49: Is a directory ```
I guess, that is the wrong directory I look at though?
(I am going to monitor the logs over the next days.)
Kind regards,
Paul ```
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