Created attachment 278265
UCSI trace
It looks like on XPS13, the UCSI notifications are broken. Attached is a
ftrace log that shows what happens if I enable UCSI tracing, plug in the
device, insmod ucsi_acpi, then remove the device, then plug it back in.
The ACPI notification works, but after the first notification, the UCSI
SET_NOTIFICATION_ENABLE command fails:
<disconnect>
rmmod-5920 [001] .... 846293.522800: ucsi_command: control=00010005
(SET_NOTIFICATION_ENABLE)
kworker/0:1-4132 [000] .... 846293.695298: ucsi_notify: CCI=00000002
Connector Change
rmmod-5920 [002] .... 846298.845856: ucsi_run_command:
SET_NOTIFICATION_ENABLE -> FAIL (err=-110)
kworker/0:1-4132 [000] .... 846298.845870: ucsi_command: control=00010012
(GET_CONNECTOR_STATUS)
kworker/0:0-31458 [000] .N.. 846299.011370: ucsi_notify: CCI=80000902
Event pending (command completed)
kworker/0:1-4132 [000] .... 846299.043161: ucsi_ack: ACK command
kworker/0:0-31458 [000] .N.. 846299.213819: ucsi_notify: CCI=20000000 ACK
completed
kworker/0:1-4132 [000] .... 846299.213823: ucsi_run_command:
GET_CONNECTOR_STATUS -> OK (err=0)
kworker/0:1-4132 [000] .... 846299.213824: typec_set_pwr_role
<-ucsi_connector_change
kworker/0:1-4132 [000] .... 846299.213824: typec_set_data_role
<-ucsi_connector_change
kworker/0:1-4132 [000] .... 846299.213825: ucsi_ack: ACK event
kworker/0:1-4132 [000] .... 846299.239159: ucsi_connector_change: port0
status: change=4040, opmode=1, connected=0, sourcing=0, partner_flags=0,
partner_type=1, request_data_obj=00000000, BC status=1
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https://bugs.launchpad.net/bugs/1726299
Title:
Apple Thunderbolt 2 to FireWire adapter not working
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