> Hi, Hi Jan, > > we are not able to obtain any packets when packet capturing with the > Mediatek MT7921K in monitor mode on 2.4, 5 and 6 GHz. > tcpdump will show you 0 recorded packets. When doing a "iw dev wls1 scan" on > a parallel running managed interface on the same phy, the packet capture > will contain beacons and probe responses from the scan though. > Can anyone confirm that? > > mt76 (https://github.com/openwrt/mt76/commits/master): commit > 6fad970893dd26ef6e6c8344b958344254f6362a (HEAD -> master, origin/master, > origin/HEAD) > Kernel: 5.16.0-rc2-next-20211124+ > WM Firmware Version: ____010000, Build Time: 20211014150922 IIRC you need to disable runtime-pm and deep-sleep to proper enable monitor mode: echo 0 > /sys/kernel/debug/ieee80211/phy<x>/mt76/runtime-pm echo 0 > /sys/kernel/debug/ieee80211/phy<x>/mt76/deep-sleep Can you please give it whirl? Regards, Lorenzo > > Steps to reproduce: > sudo iw dev wls1 del > sudo iw phy phy0 interface add mon0 type monitor > sudo ip link set dev mon0 up > sudo iw dev mon0 set freq 6115 > sudo tcpdump -i mon0 -w 6g-capture.pcap > > Kinds regards, Jan >
Attachment:
signature.asc
Description: PGP signature
