Hi. I am having trouble as my USB-C do not send video to DP1.2. Also, where 17.10 did see the external monitor, 18.04 do not. See https://askubuntu.com/questions/1022343/usb-c-video-xiaomi-laptop-to-dell-display-no-signal for 17.10 behavior and https://www.reddit.com/r/linux/comments/8cykbd/usbc_to_displayport_video/ for 18.10.
Can this regression/issue be related to this bug? -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1758797 Title: [Ubuntu 18.04] USB Type-C test failed on GLK Status in intel: New Status in linux package in Ubuntu: Fix Committed Status in linux source package in Bionic: Fix Committed 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. To manage notifications about this bug go to: https://bugs.launchpad.net/intel/+bug/1758797/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
