[Bug 1758797] Re: [Ubuntu 18.04] USB Type-C test failed on GLK

** Changed in: linux (Ubuntu)
Assignee: Thadeu Lima de Souza Cascardo (cascardo) => David Hereschler Shvo (shvo123)

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https://bugs.launchpad.net/bugs/1758797

Title:
[Ubuntu 18.04] USB Type-C test failed on GLK

Status in intel:
Fix Released
Status in linux package in Ubuntu:
Fix Released
Status in linux source package in Bionic:
Fix Released

Bug description:
[Impact]
USB Type-C ports would not be seen at ls /sys/class/typec/ some times, ie, driver probe would fail. The fix just changes a timeout setting, allowing the probe to succeed in those cases there is load on the system.

[Test Case]
During boot, with the system at load, the probe would fail some times. With the increased timeout for firmware responses, that doesn't happen after many reboots.

[Regression Potential]
This would only impact systems that have this specific ACPI node. As the probe runs on a work queue, this should not impact boot time.

Description:

Platform information:
Label: GLK02SDP
Processor: Silver N5000
Bios: GELKRVPA.X64.0083.B30.1801162142
OS: Ubuntu 18.04
Kernel: 4.15.0-10-generic

Details:
Bios: system setup -> system component -> USB Type-C <enabled>

root@GLK02:~# cat /boot/config-4.15.0-10-generic | grep -i ucsi
CONFIG_TYPEC_UCSI=m
CONFIG_UCSI_ACPI=m

root@GLK02:~# ls /sys/class/typec/
root@GLK02:~#

USB Type-C ports could not be seen.

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