[BUG] mt7921e: Intermittent connection failure

[Sean Wang]

Hi,

On Tue, Mar 31, 2026 at 2:40 AM silverducks <silverducks at altlinux.org> wrote:
>
> Greetings!
>
> I apologize for poor formatting in the previous email. I did not realize all
> plain text files' contents would be visible on the mailing list.
> I am attaching an archive containing the same files as in previous email for
> convenience.
> Given compression, I can also avoid using external hosting, which I
> presume is
> preferred, so I am including all relevant logs in the archive as well.
> I am also including original email text just in case.

I think the current test setup is still mixing too many variables, so
it is hard to tell what is actually triggering the issue.

In particular, if the goal is to test the NetworkManager path, the
script should not also manually manage wpa_supplicant, and iwd should
not be part of the same test either. NetworkManager normally manages
the Wi-Fi backend itself, so mixing manual wpa_supplicant handling,
iwd, and NetworkManager in one setup makes the result difficult to
interpret.

Could you first simplify the setup and test one path at a time?

If you want to test NetworkManager, use only NetworkManager, for
example by using nmcli to explicitly control the connection steps.
If you want to test plain wpa_supplicant, stop NetworkManager
completely and use only wpa_supplicant + wpa_cli. I would suggest
starting with this path, since that is also the setup I usually use
for testing.
If you want to test iwd, please test it separately as well.
Also suggest to avoid suspend/resume or hibernation for now.
The log you shared includes a clear S4 resume path (ACPI: PM: Waking
up from system sleep state S4 and pci_pm_restore returns -110), which
does not match a simple reconnect or module reload test.