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.
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https://bugs.launchpad.net/bugs/1708043
Title:
Lenovo X1 Carbon Gen5 fails to resume
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