On Mon, May 18, 2015 at 3:26 PM, Emmanuel Grumbach <egrumbach@xxxxxxxxx> wrote: > On Mon, May 18, 2015 at 10:01 AM, darklight wu <darklightwu@xxxxxxxxx> wrote: >> Hi, All: >> >> I configured the Wifi Monitor mode with Intel 7260 card under >> Ubuntu14.04 and then used Wireshark to capture packets from air. But I >> could only get management/control packets but no data packets. I tried >> different channels and also with HT20 or HT40+/-. >> >> The commands I used were: >> >> iw dev wlan0 interface add mon0 type monitor >> iw dev wlan0 del //I googled and was told I needed to delete the >> wlan0 first. Or else I got device busy (-16) error >> ifconfig mon0 up >> iw dev mon0 set channel 1 >> >> I also tried to use other ways like "airmon-ng start wlan0". All the >> observations were same, no data packets. It's weird! Anyone has a >> clue? >> > > This is weird. But I recommend to add power_scheme=1 as a module > parameter to iwlmvm. Since iwlmvm is loaded automatically, you'll need > to add that to /etc/modprobe.d/iwlwifi.conf. > 14.04 ships 3.13 and I remember we had issues with monitor mode at > that time. You may want to try a newer kernel. I tried again today with "power_scheme=1" and also booted with Ubuntu 15.04. Both still failed to work in monitor mode. And with Ubuntu 15.04, I event could not configure the nic to work on monitor mode. The same commands at least can set the monitor mode under 14.04. Meanwhile, I just want to clarify, the nic could capture data packets to/from itself but could not capture others that were not belongs to it. My co-worker tried on another machine with Ubuntu 14.04, he was also failed. Any tricks here? -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
