Arch Linux

matesz

Member

Registered: 2024-10-25

Posts: 12

[SOLVED]ASUS ZenBook S16 UM5606WA + Thunderbolt (Cannot authorize USB)

I'm having an issue with USB devices on my thunderbolt dock.

I know that this will be first thing to ask so let me get this right out of the gate: there is no option to set authorization to none/legacy in UEFI itself.

plasma thunderbolt UI shows "authorized & connected, trusted" (translated into English, not sure if this is exact wording).

I belive i tried everything i can think of, even activated secure boot.
If you have any tips on what can I try next please let me know.
The most insulting part is that it worked ONCE yesterday. Now i can't reproduce it despite all logs/configs looking exactly the same.

Logs:

bootctl list

 ● Lenovo ThinkPad Thunderbolt 3 Dock
   ├─ type:          peripheral
   ├─ name:          ThinkPad Thunderbolt 3 Dock
   ├─ vendor:        Lenovo
   ├─ uuid:          c5030000-0080-8c1e-8328-442754855825
   ├─ generation:    Thunderbolt 3
   ├─ status:        authorized
   │  ├─ domain:     16643804-70b0-51ee-ffff-ffffffffffff
   │  ├─ rx speed:   40 Gb/s = 2 lanes * 20 Gb/s
   │  ├─ tx speed:   40 Gb/s = 2 lanes * 20 Gb/s
   │  └─ authflags:  none
   ├─ authorized:    pon, 1 gru 2025, 15:13:42
   ├─ connected:     pon, 1 gru 2025, 15:13:42
   └─ stored:        czw, 27 lis 2025, 19:08:27
      ├─ policy:     iommu
      └─ key:        no

tbtadm acl

ACL is empty

tbladm devices

0-2     Lenovo  ThinkPad Thunderbolt 3 Dock     authorized      not in ACL

nano /sys/bus/thunderbolt/devices/domain0/security

user

dmesg -w

[   55.962125] thunderbolt 0-0:2.1: retimer disconnected
[   55.963422] amdgpu 0000:c4:00.0: amdgpu: [drm] DMUB HPD IRQ callback: link_index=6
[   55.963607] [drm] DM_MST: stopping TM on aconnector: 000000003c23e112 [id: 140]
[   55.965987] thunderbolt 0-2: device disconnected
[   63.817433] thunderbolt 0-2: new device found, vendor=0x108 device=0x1720
[   63.817479] thunderbolt 0-2: Lenovo ThinkPad Thunderbolt 3 Dock
[   64.543305] thunderbolt 0-0:2.1: new retimer found, vendor=0x1da0 device=0x8833
[   64.655567] amdgpu 0000:c4:00.0: amdgpu: [drm] DMUB HPD IRQ callback: link_index=6
[   64.716054] [drm] DM_MST: starting TM on aconnector: 000000003c23e112 [id: 140]
[   64.719520] [drm] DM_MST: DP14, 4-lane link detected

lsmod | grep thunderbolt

thunderbolt           577536  1 typec

@update
After 2 hours of watching YT, it randomly started working, unplugged, plugged, and stopped working.
Dock is working perfectly fine with 3 other laptops.
I think i'm starting to go crazy..

Last edited by matesz (2025-12-09 10:45:07)

matesz

Member

Registered: 2024-10-25

Posts: 12

Re: [SOLVED]ASUS ZenBook S16 UM5606WA + Thunderbolt (Cannot authorize USB)

I haven't been able to make it work again, it's a shame that Linux doesn't support thunderbolt

matesz

Member

Registered: 2024-10-25

Posts: 12

Re: [SOLVED]ASUS ZenBook S16 UM5606WA + Thunderbolt (Cannot authorize USB)

Marking as solved as i found root cause:

Re: [REGRESSION] thunderbolt: Fix a logic error in wake on connect - Alyssa Ross

It's a 5 year old bug that was supposed to be fixed in 6.16

If you have this issue, after authorizing, run

 lspci

this will force-refresh stuff, and will make device appear.

Original fix source