Quoted from Lenovo: Yoda-1.0 (X1 Carbon 5th) only have Alpine Ridge AR-DP B1 (Device ID = 0x15D3) model.
Lenovo Thunderbolt Dock also uses it. 0x1578 is previous Alpine Ridge chipset (2015), P70 (Payton) only has it. Or other vendor dock may have it (Ex: HP Elite Thunderbolt 3 65W Dock etc.). AR_HR_4C_XHC Alpine Ridge DP (B Step) 1578 AR_HR_C0_4C_XHC Alpine Ridge DP (C Step) 15D3 I doubt that customer plugged 3rtd party TBT device. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1708043 Title: Lenovo X1 Carbon Gen5 fails to resume To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1708043/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs