Related report: https://github.com/lwfinger/rtw89/issues/412

Related report: https://github.com/lwfinger/rtw89/issues/412

[Vladimir Popovic]

Hello,

I am reporting an intermittent connectivity problem with the
rtw89_8852be driver and a Realtek RTL8852BE PCIe wireless adapter.

During normal network activity, all network traffic occasionally stops.
The Wi-Fi interface still appears connected to the access point, but no
data is transmitted or received.

The connection does not recover automatically. Disabling and enabling
Wi-Fi manually restores connectivity:

    nmcli radio wifi off
    nmcli radio wifi on

The problem occurs intermittently and may take a long time to reproduce.

System information:

    Distribution:
    Fedora Linux 44

    Kernel:
    7.1.3-201.fc44.x86_64

    linux-firmware:
    20260622-1.fc44.noarch

    NetworkManager:
    1.56.1-2.fc44.x86_64

Hardware:

    Network controller:
    Realtek Semiconductor Co., Ltd.
    RTL8852BE PCIe 802.11ax Wireless Network Controller
    PCI ID: 10ec:b852

    Subsystem:
    Lenovo Device 17aa:4853

    Driver:
    rtw89_8852be

    Firmware loaded:
    rtw89/rtw8852b_fw-2.bin

    Firmware version:
    0.29.29.18 (9e3d777f)

Observed behavior:

1. Connect to a Wi-Fi network.
2. Use the connection normally, for example video streaming, downloads
   or communication with local development services.
3. After an unpredictable period, network traffic stops completely.
4. NetworkManager may still show the interface as connected.
5. The connection does not recover by itself.
6. Toggling Wi-Fi off and on restores connectivity.

Expected behavior:

The wireless connection should continue transmitting and receiving data
without requiring a manual Wi-Fi reset.

Power-management testing:

NetworkManager Wi-Fi power saving is disabled:

    [connection]
    wifi.powersave=2

The following valid rtw89 module parameters were also tested:

    options rtw89_pci disable_clkreq=y disable_aspm_l1=y disable_aspm_l1ss=y
    options rtw89_core disable_ps_mode=y

The active values were confirmed after reboot:

    disable_clkreq=Y
    disable_aspm_l1=Y
    disable_aspm_l1ss=Y
    disable_ps_mode=Y

This configuration initially appeared to improve stability, but the
traffic stall later occurred again on the existing Fedora installation.

The kernel also reports during boot:

    ACPI FADT declares the system doesn't support PCIe ASPM, so disable it

Therefore, the ASPM-specific options may be redundant on this machine.
The remaining possible power-management factors include CLKREQ and the
internal rtw89 power-saving mode.

Comparison with a fresh installation:

A freshly installed Fedora 44 system on a secondary drive, running on
the same laptop, wireless adapter and kernel version, has remained
stable during testing so far.

The older existing Fedora installation still experiences intermittent
traffic stalls.

This may indicate an interaction between rtw89 and an existing system,
NetworkManager or power-management configuration rather than a simple
hardware failure. However, both installations use the same physical
adapter and kernel driver.

I have not yet captured kernel messages at the exact moment of failure,
because the most recent monitoring session did not reproduce the issue.
I can provide the complete dmesg, NetworkManager log and iw event output
when the next stall occurs.

Related report:

https://github.com/lwfinger/rtw89/issues/412

Please let me know which additional debug information or driver
parameters would be most useful.

Regards,
Vladimir

-- 

All the best,

Vladimir Popović

Save trees. Don’t hit print.

Re: Related report: https://github.com/lwfinger/rtw89/issues/412

[Bitterblue Smith]

On 22/07/2026 19:26, Vladimir Popovic wrote:
> Hello,
> 
> I am reporting an intermittent connectivity problem with the
> rtw89_8852be driver and a Realtek RTL8852BE PCIe wireless adapter.
> 
> During normal network activity, all network traffic occasionally stops.
> The Wi-Fi interface still appears connected to the access point, but no
> data is transmitted or received.
> 
> The connection does not recover automatically. Disabling and enabling
> Wi-Fi manually restores connectivity:
> 
>     nmcli radio wifi off
>     nmcli radio wifi on
> 
> The problem occurs intermittently and may take a long time to reproduce.
> 
> System information:
> 
>     Distribution:
>     Fedora Linux 44
> 
>     Kernel:
>     7.1.3-201.fc44.x86_64
> 

Hi,

Try kernel 7.1.4. It has a fix for this.