From: bugzilla-daemon@kernel.org
To: linux-usb@vger.kernel.org
Subject: [Bug 218795] New: USB4 / Thunderbolt + AMD: unstable and slow link (many uncorrectable errors)
Date: Tue, 30 Apr 2024 11:41:54 +0000 [thread overview]
Message-ID: <bug-218795-208809@https.bugzilla.kernel.org/> (raw)
https://bugzilla.kernel.org/show_bug.cgi?id=218795
Bug ID: 218795
Summary: USB4 / Thunderbolt + AMD: unstable and slow link (many
uncorrectable errors)
Product: Drivers
Version: 2.5
Hardware: All
OS: Linux
Status: NEW
Severity: normal
Priority: P3
Component: USB
Assignee: drivers_usb@kernel-bugs.kernel.org
Reporter: guilhem@lettron.fr
Regression: No
Created attachment 306247
--> https://bugzilla.kernel.org/attachment.cgi?id=306247&action=edit
logs with thunderbolt debug
Context
laptop : Asus UM5302TA
CPU : AMD Ryzen 7 6800U
egpu case : Razer Core X Chroma, thunderbolt 3
GPU : nvidia + opendriver 550.78
Ubuntu 24.04, kernel 6.7 / 6.8 / 6.9
when plugging thunderbolt cable:
```
[...]
pci 0000:35:00.0: 2.000 Gb/s available PCIe bandwidth, limited by 2.5 GT/s PCIe
x1 link at 0000:00:04.1 (capable of 31.504 Gb/s with 8.0 GT/s PCIe x4 link)
[...]
```
```
nvidia 0000:35:00.0: PCIe Bus Error: severity=Uncorrectable (Non-Fatal),
type=Transaction Layer, (Requester ID)
nvidia 0000:35:00.0: device [10de:2504] error status/mask=00100000/00000000
nvidia 0000:35:00.0: [20] UnsupReq (First)
nvidia 0000:35:00.0: AER: TLP Header: 40001001 0000000c ad08000c f7f7f7f7
```
I tried many cables (tb3, tb4, etc).
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