Fw: Re: [BUG] ath10k_pci: QCA9377 reports recurring PCIe AER RxErr/BadDLLP errors

[yphtno]

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------- Forwarded Message -------
From: yphtno <yphtno at proton.me>
Date: On Sunday, 8 November 2026 at 2:14 PM
Subject: Re: [BUG] ath10k_pci: QCA9377 reports recurring PCIe AER RxErr/BadDLLP errors
To: ath10k at lists.infradead.org <ath10k at lists.infradead.org>
CC: linux-wireless at vger.kernel.org <linux-wireless at vger.kernel.org>, linux-kernel at vger.kernel.org <linux-kernel at vger.kernel.org>


> Hello,
> 
> I am experiencing a similar issue with a Qualcomm Atheros QCA9377 wireless adapter using the ath10k_pci driver on an Acer Aspire F5-573G.
> 
> I found the existing discussion about recurring PCIe AER errors on the QCA9377 and wanted to share my hardware's behavior in case it is related.
> 
> Hardware:
> 
> -   Laptop: Acer Aspire F5-573G
>     
> -   Wi-Fi adapter: Qualcomm Atheros QCA9377
>     
> -   PCI ID: 168c:0042
>     
> -   Hardware revision: hw1.1
>     
> -   Driver: ath10k_pci
>     
> -   Firmware: WLAN.TF.2.1-00021-QCARMSWP-1
>     
> -   Kernel version: [INSERT `uname -r`]
>     
> -   BIOS version: [INSERT BIOS VERSION]
>     
> 
> Observed behavior:
> 
> The Wi-Fi connection intermittently fails during normal use. My kernel logs show recurring PCIe AER correctable physical-layer errors involving the QCA9377, including:
> 
> -   RxErr
>     
> -   BadDLLP
>     
> -   Rollover
>     
> -   Timeout
>     
> 
> I have also observed the following ath10k message:
> 
> `ath10k_pci 0000:03:00.0: failed to flush transmit queue (skip 0 ar-state 1): 0`
> 
> The firmware appears to load successfully.
> 
> ASPM testing:
> 
> I have tried booting with `pcie_aspm=off`. It sometimes appears to improve Wi-Fi reliability, but the connection still fails most of the time. I have not yet completed a controlled comparison, so I cannot confirm whether ASPM is responsible.
> 
> The issue has persisted after reinstalling Arch Linux.
> 
> Additional information:
> 
> I can provide full kernel logs, `lspci -vv` output, BIOS information, and perform additional testing if needed.
> 
> I would appreciate any guidance on whether this could be related to the existing QCA9377 PCIe AER issue, or whether further investigation is needed.
> 
> Thank you for your time.
> 
> 
> 
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