https://bugzilla.kernel.org/show_bug.cgi?id=214259 Bug ID: 214259 Summary: Discrete Thunderbold Controller 8086:1137 throws DMAR and XHCI errors and is only partially functional Product: Drivers Version: 2.5 Kernel Version: 5.13.12 and 5.14-rc7 Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: USB Assignee: drivers_usb@xxxxxxxxxxxxxxxxxxxxxx Reporter: wse@xxxxxxxxxxxxxxxxxxx Regression: No Affected devices: Clevo X170KM Barebone (I have one here) and according to this reddit thread that describes the exact same problem a Thunderbold PCIe exapansion card: https://www.reddit.com/r/Thunderbolt/comments/ohjakr/asus_thunderboltex_4_linux_compatability/ The Clevo does not use the build in thunderbold controler of the CPU but a discrete Thunderbold controler, which seems to be the exact same one from that expansion card with the pci id of 8086:1137. High level problem desciption: I have Thunderbold dock with DP-out, USB ports and an Ethernet port. When I plug it in, only the DP port works. When its plugged in before boot, ethernet also works. The USB ports on the Dock never work. dmesg is showing several erros regarding DMAR and xhci, since the DMAR errors are shwing up first is suspect them to be the root cause making the rest afterwards fails also. The error is slightly different between 5.13 and 5.14 5.14-rc7: [ 3.148557] DMAR: DRHD: handling fault status reg 2 [ 3.148561] DMAR: [DMA Write NO_PASID] Request device [0x04:0x00.0] fault addr 0x69974000 [fault reason 0x05] PTE Write access is not set 5.13.12: [ 3.737783] DMAR: DRHD: handling fault status reg 2 [ 3.737790] DMAR: [DMA Write] Request device [04:00.0] PASID ffffffff fault addr 69974000 [fault reason 05] PTE Write access is not set 04.00.0 is the thunderbold controller: 04:00.0 USB controller [0c03]: Intel Corporation Thunderbolt 4 NHI [Maple Ridge 4C 2020] [8086:1137] (prog-if 40 [USB4 Host Interface]) -- You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.
