I'm doing a personal project and wanted to leverage my ALFA card. It isn't more than two seconds before I can see the card connect, then just as suddenly disconnect. Here is my iwconfig info:
lo no wireless extensions.
wlan1 IEEE 802.11bg ESSID:off/any
Mode:Managed Access Point: Not-Associated Tx-Power=30 dBm
Retry short limit:7 RTS thr:off Fragment thr:off Encryption key:off Power Management:offwlan0 IEEE 802.11abgn ESSID:"********"
Mode:Managed Frequency:5.2 GHz Access Point: A8:D0:E5:34:4D:C3
Bit Rate=54 Mb/s Tx-Power=15 dBm
Retry short limit:7 RTS thr:off Fragment thr:off Encryption key:off Power Management:on Link Quality=48/70 Signal level=-62 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:0 Invalid misc:603 Missed beacon:0>eth0 no wireless extensions.
It shows that my wlan0 is the on-board wifi card and it is functioning normally. However the wlan1 is the alfa networks card is is definitely not displaying the same information: bitrate, txrate and a few other things are missing. I'm suspecting that the powermanagement is the issue because I compile all my drivers from source and haven't had any issues with the ARCH and Kali2.0 machines I'm using in my lab...
I've edited my rc.local file to allow for a correct txrate and power also.
sudo cat /etc/rc.local #!/bin/sh -e # #rc.local # # This script is executed at the end of each multiuser runlevel. # Make sure that the script will "exit 0" on success or any other # value on error. # # In order to enable or disable this script just change the execution # bits. # # By default this script does nothing.
iwconfig wlan1 rate 48M auto
iwconfig wlan1 frag 512
iwconfig wlan1 rts 512
iwconfig wlan1 txpower 30
exit 0
Anyone have some good thoughts on this? I'll try and provide any information that I can to help this diagnosis go smoothly.
Edit per request: sudo lshw -C network
sudo lshw -C network *-network description: Ethernet interface product: Ethernet Connection I218-LM vendor: Intel Corporation physical id: 19 bus info: pci@0000:00:19.0 logical name: eth0 version: 04 serial: 54:ee:75:43:a4:d2 capacity: 1Gbit/s width: 32 bits clock: 33MHz capabilities: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=3.2.6-k firmware=0.6-4 latency=0 link=no multicast=yes port=twisted pair resources: irq:44 memory:f0500000-f051ffff memory:f053e000-f053efff ioport:3080(size=32) *-network description: Wireless interface product: Wireless 7260 vendor: Intel Corporation physical id: 0 bus info: pci@0000:03:00.0 logical name: wlan0 version: bb serial: cc:3d:82:1e:a2:df width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=iwlwifi driverversion=4.4.0-65-generic firmware=17.352738.0 ip=10.120.32.201 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn resources: irq:49 memory:f0400000-f0401fff *-network description: Wireless interface physical id: 2 bus info: usb@2:2 logical name: wlan1 serial: 00:c0:ca:83:07:b2 capabilities: ethernet physical wireless configuration: broadcast=yes driver=rtl8187 driverversion=4.4.0-65-generic firmware=N/A link=no multicast=yes wireless=IEEE 802.11bg
Update as of 20170302 @ 1520 Central
The alfa card is still responding the same as before. Connection followed by a disconection.
iwconfig settings:
lo no wireless extensions.
wlan1 IEEE 802.11bg ESSID:off/any
Mode:Managed Access Point: Not-Associated Tx-Power=20 dBm
Retry short limit:7 RTS thr:off Fragment thr:off Encryption key:off Power Management:off wlan0 IEEE 802.11abgn ESSID:"Public-WIFI"
Mode:Managed Frequency:2.462 GHz Access Point: 18:64:72:80:28:00
Bit Rate=144.4 Mb/s Tx-Power=22 dBm
Retry short limit:7 RTS thr:off Fragment thr:off Encryption key:off Power Management:on Link Quality=50/70 Signal level=-60 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:0 Invalid misc:0 Missed beacon:0eth0 no wireless extensions.
sudo lshw -C network
*-network
description: Ethernet interface product: Ethernet Connection I218-LM vendor: Intel Corporation physical id: 19 bus info: pci@0000:00:19.0 logical name: eth0 version: 04 serial: 54:ee:75:43:a4:d2 capacity: 1Gbit/s width: 32 bits clock: 33MHz capabilities: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=3.2.6-k firmware=0.6-4 latency=0 link=no multicast=yes port=twisted pair resources: irq:44 memory:f0500000-f051ffff memory:f053e000-f053efff ioport:3080(size=32) *-network description: Wireless interface product: Wireless 7260 vendor: Intel Corporation physical id: 0 bus info: pci@0000:03:00.0 logical name: wlan0 version: bb serial: cc:3d:82:1e:a2:df width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=iwlwifi driverversion=4.4.0-65-generic firmware=17.352738.0 ip=10.192.136.177 latency=0 link=yes multicast=yes wireless=IEEE 802.11abgn resources: irq:49 memory:f0400000-f0401fff *-network description: Wireless interface physical id: 2 bus info: usb@2:1 logical name: wlan1 serial: 00:c0:ca:83:07:b2 capabilities: ethernet physical wireless configuration: broadcast=yes driver=rtl8187 driverversion=4.4.0-65-generic firmware=N/A link=no multicast=yes wireless=IEEE 802.11bg
wifi troubleshooting script results
I'm still stumped with what's wrong.
sudo lshw -C networkand ideally the output from the wireless scriptlsb_release -awill tell you the exact version of Ubuntu you are running and as I recall 16.04.2 provided a new Hardware Enablement Stack which might provide better support for your hardware.