WI-PI connection troubleshoot

Question

Hi guys,

OS : Raspbian

Yesterday i successfully setup wi-fi connection then save it, everything works fine.

But when i turn on today, couldn't see blue led light.

So, I tested it couple of times.

Interesting point is, when i disconnect wi-pi then connect it again( it cause Rpi reboot ) then it works.

So, i ran dmesg command

it shows, following error but i'm not sure what cause this error message.

..

"disabling ht due to wep/tkip use"

...

also i check syslog, but couldn't find any clue.

Is there anybody has a similar issue?

Thanks.

Former Member · Accepted Answer

Solved!! If someone has a similar issue as mine, try this one. All i did, change RPi wifi setting , in detail changed Authentication setting. Original one : it works, until i reboot or turn off/ turn on sudo nano /etc/wpa_supplicant/wpa_supplicant.conf ========================================================== ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev update_config=1 network={ ssid="MySSID" psk="MyPassword" proto=WPA key_mgmt=WPA-PSK pairwise=TKIP auth_alg=OPEN } ========================================================== New one: it works beautifully, reboot or turn off/on in anycase works! ========================================================== ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev update_config=1 network={ ssid="MySSID" psk="MyPassword" proto=RSN key_mgmt=WPA-PSK pairwise=CCMP auth_alg=OPEN } ========================================================== Just for you info Here is Rpi interfaces configuration suno nano /etc/network/intefaces ========================================================== auto lo iface lo inet loopback iface eth0 inet dhcp allow-hotplug wlan0 iface wlan0 inet manual wpa-roam /etc/wpa_supplicant/wpa_supplicant.conf iface default inet dhcp ========================================================== Hope this help

shabaz · Answer

Hi Hyun Seok,

I don't know the answer to your main question, but regarding your reboot issue; I'm seeing it too. I used the most recent image as of two weeks ago, and plugging in the WiPi caused a reboot. After the power cycle it worked fine. I only tried it once. Nothing else was plugged into the RPI (and no external hub either).

I thought it might have been power related (I have not used the particular PSU and cable with the RPI) but I've not tried to measure any voltage levels yet. So, I'm not sure what the cause is.

My PSU was an original Samsung tablet charger (model ETA-P10X) and the USB cable was an original (with hologram on the connector) from a Motorola phone (model SKN6238A) so not no-name power/cable.. I've no idea what the current consumption of the combined RPI and WiPi is. It could be related to the software I suppose (I didn't have a chance to investigate so far; I have no idea either way currently).

Former Member · Answer

I was getting the same deal. A LOT of running around trying to find out what the story was. There's a power save option which you need to turn off. Check this command which gives your wireless settings. iwconfig Should show something like this. 
 IEEE 802.11bgn ESSID:" Your Wifi network name " Mode:Managed Frequency:2.412 GHz Access Point: 7C:05:07:84:38:80 Bit Rate=14.4 Mb/s Tx-Power=20 dBm Retry long limit:7 RTS thr:off Fragment thr:off Power Management:on Link Quality=31/70 Signal level=-79 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:119 Invalid misc:1818 Missed beacon:0

You need to change powersave ON to Powersave OFF !! To edit the powersave option, you need to do it from a file called interfaces in the /etc/network directory Go to the network directory. cd /etc/network Check to see if interfaces file is there....it should be.... but as a Raspnoob I'm not sure what is and isn't around. ls Should show an output like this...my Pi is unmolested at the moment so should be the same as yours. if-down.d if-post-down.d if-pre-up.d if-up.d interfaces run You need to edit the interfaces file with nano sudo nano interfaces Copy in this code....it works with my Wipi....a lot of other stuff out there didn't. Change "Your network name" and "Your network password" to your network name and the password key you use. auto lo

iface lo inet loopback
iface eth0 inet dhcp

auto wlan0
allow-hotplug wlan0
iface wlan0 inet dhcp
 wpa-ssid "Your network name"
 wpa-psk "Your network password"

post-up iwconfig wlan0 power off Get out of Nano to finish the edit Ctrl-X Y to save Check the iwconfig command again iwconfig Output should be something like this 
 IEEE 802.11bgn ESSID:" Your Wifi network name " 
 Mode:Managed Frequency:2.412 GHz Access Point: 7C:05:07:84:38:80 
 Bit Rate=13 Mb/s Tx-Power=20 dBm 
 Retry long limit:7 RTS thr:off Fragment thr:off 
 Power Management:off 
 Link Quality=31/70 Signal level=-79 dBm 
 Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 
 Tx excessive retries:130 Invalid misc:1829 Missed beacon:0

Reboot the pi sudo reboot Wipi should now stay on, mine has for four days now.