I'm using Intel 7260 AC with this driver: https://www.kernel.org/pub/linux/kernel/projects/backports/stable/v3.11-rc3/ https://www.kernel.org/pub/linux/kernel/projects/backports/stable/v3.11-rc3/ , with the "iwlwifi-7260-7.ucode" firmware. I'm using it in monitor mode to capture 802.11ac packets on channel 36. It works well, I can capture VHT packets without problems, but only as long as the number of packets per second being captured is relatively low, e.g. 10 or 20 packets per second. As soon as the traffic gets heavier, e.g. 100 packets per second, the card stops capturing *all* VHT packets within a second from the moment the traffic volume got higher. The interesting part is that it doesn't stop capturing altogether: it keeps on capturing 802.11n HT and legacy 802.11a packets, it just completely ignores 802.11ac VHT packets. Is there any way to fix this problem and ensure stable VHT capture?
I may suggest contacting the Communities site of your Linux* distribution or also the link below.