net: wireless: ralink: RT2X00: regression, hostapd do not work anymore on 6.18.33 (work on 6.18.26)

DISCUSSION Corentin Labbe 2 participants 2 messages May 31 – Jun 1

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Corentin Labbe

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2026-05-31 14:11 UTC #0 lore raw

Hello

I have an hostapd setup with a
01:00.0 Network controller: Ralink corp. RT2790 Wireless 802.11n 1T/2R PCIe

The setup work fine on 6.18.26-gentoo
It breaks on 6.18.33-gentoo

I found an hint in dmesg:
On 6.18.26-gentoo I see:

May 31 15:48:45 trash01 kernel: ieee80211 phy0: rt2x00_set_rf: Info - RF chipset 0003 detected

On 6.18.33-gentoo I see:

May 31 15:22:57 trash01 kernel: ieee80211 phy0: rt2x00_set_rf: Info - RF chipset 0006 detected

The RF chipset seems badly detected.

Regards

Stanislaw Gruszka

2026-06-01 16:18 UTC #1 lore raw

Hi,

Quoted 8 lines · Corentin Labbe

Hello
I have an hostapd setup with a
01:00.0 Network controller: Ralink corp. RT2790 Wireless 802.11n 1T/2R PCIe
The setup work fine on 6.18.26-gentoo
It breaks on 6.18.33-gentoo

Quoted 8 lines

I found an hint in dmesg:
On 6.18.26-gentoo I see:
May 31 15:48:45 trash01 kernel: ieee80211 phy0: rt2x00_set_rf: Info - RF chipset 0003 detected
On 6.18.33-gentoo I see:
May 31 15:22:57 trash01 kernel: ieee80211 phy0: rt2x00_set_rf: Info - RF chipset 0006 detected
The RF chipset seems badly detected.

I do not see any rt2x00 related changes between upstream v6.18.26 and v6.18.33. Assuming gentoo does not provide own extra patches, seems the issue be in some other subsystem, maybe PCI.

Then the best way get solution to the problem would be to find offensive commit using git bisection:
https://docs.kernel.org/admin-guide/bug-bisect.html

You can also try if by a chance bug is not yet fixed in just released v6.18.34

Regards
Stanislaw