probably you need to disable your NetworkManager and wpa_supplicant. Then switch/change your mode to monitor. Make sure the command "iw [interface_name] info" shows you the type is monitor. 2015-05-20 1:41 GMT+08:00 Emmanuel Grumbach <egrumbach@xxxxxxxxx>: > On Tue, May 19, 2015 at 7:44 PM, darklight wu <darklightwu@xxxxxxxxx> wrote: >> 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? > > You must not have any interface besides the monitor interface. I bet > you still have the wpa_supplicant running and this is why you only > have a virtual monitor interface that catches the packet from your > managed interface only. > -- > 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 -- 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
