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openwrt / mt76

mac80211 driver for MediaTek MT76x0e, MT76x2e, MT7603, MT7615, MT7628 and MT7688
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MT7613 Channel 153(5765MHz) not work #650

Open intdev32 opened 2 years ago

intdev32 commented 2 years ago

I updated openwrt to recent snapshot build (r18953-b9251e3b40) and found 5GHz channel 153 is not working.

When I set channel to '153', it goes to 149.

image

But 149, 157, 161 working well.

Only 153 doesn't work.

OpenWrt SNAPSHOT r18953 > Drivers and firmware are:

kmod-mt76-connac 5.10.100+2022-02-15-c67df0d3-4 - -
kmod-mt76-core 5.10.100+2022-02-15-c67df0d3-4 - -
kmod-mt7603 5.10.100+2022-02-15-c67df0d3-4 - -
kmod-mt7615-common 5.10.100+2022-02-15-c67df0d3-4 - -
kmod-mt7615e 5.10.100+2022-02-15-c67df0d3-4 - -
kmod-mt7663-firmware-ap 5.10.100+2022-02-15-c67df0d3-4

intdev32 commented 2 years ago

I found this problem on Linksys EA4500 too. (OpenWrt 21.02.2 Release) EA4500 uses Marvell 88W8366 wireless chip.

So this problem is not mt76 specific. Maybe not mt76 driver/firmware issue.

Borromini commented 2 years ago

Looks as per the specification? Channel 153 is a 20 MHz only channel. Anything wider (HT40 or VHT80) starts at channel 149. Note 157 and 161 are still in that same channel block. Open a WiFi scanner and you'll see no difference there.

afbeelding

castillofrancodamian commented 6 months ago

¿Se ve según las especificaciones ? El canal 153 es un canal exclusivo de 20 MHz. Cualquier cosa más ancha (HT40 o VHT80) comienza en el canal 149. Tenga en cuenta que 157 y 161 todavía están en ese mismo bloque de canales. Abra un escáner WiFi y no verá ninguna diferencia allí.

imagen

Your theory that channels 157 and 161 also force you to use channel 149 is not true. When I select channel 161, it broadcasts on 157. If I select channel 157, it broadcasts on 157. If I select channel 153, it broadcasts on 149. And if I select channel 149, it broadcasts on 149, logically. I use 80 MHz. MERCUSYS MR70X device.