Arch Linux

LogXx

Member

Registered: 2019-07-25

Posts: 19

dmesg is flooded with PCIE errors

So I have a new installation of Arch on my laptop (Acer Aspire A315-41), everything works pretty well except some device is constantly causing PCIE errors:

[ 9130.971638] pcieport 0000:00:01.7: PCIe Bus Error: severity=Corrected, type=Data Link Layer, (Transmitter ID)
[ 9130.971642] pcieport 0000:00:01.7:   device [1022:15d3] error status/mask=00001000/00006000
[ 9130.971647] pcieport 0000:00:01.7:    [12] Timeout  

There are messages about Timeout, BadTLP and BadDLLP (Timeout is most frequent). I've tried to use the "pcie_aspm=off" before (it works), but I really want to know why these errors happen and if there is any other way to fix it.

lspci:

[logxx@A315-41 ~]$ lspci -t -v
-[0000:00]-+-00.0  Advanced Micro Devices, Inc. [AMD] Raven/Raven2 Root Complex
           +-00.2  Advanced Micro Devices, Inc. [AMD] Raven/Raven2 IOMMU
           +-01.0  Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-1fh) PCIe Dummy Host Bridge
           +-01.6-[01]--+-00.0  Realtek Semiconductor Co., Ltd. RTL8411B PCI Express Card Reader
           |            \-00.1  Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
           +-01.7-[02]----00.0  Qualcomm Atheros QCA9377 802.11ac Wireless Network Adapter
...

Lone_Wolf

Forum Moderator

From: Netherlands, Europe

Registered: 2005-10-04

Posts: 11,922

Re: dmesg is flooded with PCIE errors

My threadripper system has the same issue.
I've updated the firmware to newer versions a few times, and every time checked if that solved the issue.
The number of those errors did decrease, but never became zero .

With the last released firmware (late 2020) for my MB the system does run stable without pcie_aspm=off .
However the videocard uses a lot of power according to lm-sensors and its fans run almost continously .

unigine-superposition, unigine-valley and FPS in games I play perform don't show a better performance wkithout pcie_aspm = off .

Some links with technical info about this :

https://unix.stackexchange.com/question … 090#369090
http://xillybus.com/tutorials/pci-expre … al-guide-1

---

Disliking systemd intensely, but not satisfied with alternatives so focusing on taming systemd.

(A works at time B)  && (time C > time B ) ≠  (A works at time C)

LogXx

Member

Registered: 2019-07-25

Posts: 19

Re: dmesg is flooded with PCIE errors

Oh, ok. I'm running latest firmware too, and yes, error is there. Gonna just ignore it, I guess