dchao99
Posts: 45
Joined: Fri Jan 15, 2016 9:26 pm

Re: WiFi Issues ? Start here !

Thu Mar 31, 2016 12:01 am

rurwin wrote:
dchao99 wrote:RPi3: On top of the problem with channel 12/13 (country = gb), it doesn't work on channel 11 (country = us)
It should do. What does "iwlist freq" say?
It works on channel 6.
Power management off. Latest firmware 4.1.19-v7+.

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$ iwlist wlan0 frequency
wlan0     11 channels in total; available frequencies :
          Channel 01 : 2.412 GHz
          Channel 02 : 2.417 GHz
          Channel 03 : 2.422 GHz
          Channel 04 : 2.427 GHz
          Channel 05 : 2.432 GHz
          Channel 06 : 2.437 GHz
          Channel 07 : 2.442 GHz
          Channel 08 : 2.447 GHz
          Channel 09 : 2.452 GHz
          Channel 10 : 2.457 GHz
          Channel 11 : 2.462 GHz
          Current Frequency:2.462 GHz (Channel 11)

jokreg
Posts: 2
Joined: Thu Mar 31, 2016 12:44 am

Re: WiFi Issues ? Start here !

Thu Mar 31, 2016 9:10 am

I have some issue with my Raspberry Pi 3 Model B WiFi adapter...
Using aircrack-ng:

Code: Select all

[email protected]:/# airmon-ng start wlan0


Interface       Chipset         Driver

wlan0           Unknown         brcmfmac_sdio - [phy0]mon0: ERROR while gettinterface flags: No such device

                                (monitor mode enabled on mon0)
This is lsusb output (no wifi adapter!):

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[email protected]:/home/pi# lsusb
Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp. SMSC9512/9514 Fast Ethernet Adapter
Bus 001 Device 002: ID 0424:9514 Standard Microsystems Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
And this is dmesg output:

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[email protected]:/# dmesg | grep brcm
[    7.603063] brcmfmac: brcmf_sdio_drivestrengthinit: No SDIO Drive strength init done for chip 43430 rev 1 pmurev 24
[    7.603662] usbcore: registered new interface driver brcmfmac
[    7.841367] brcmfmac: brcmf_c_preinit_dcmds: Firmware version = wl0: Dec 15 2015 18:10:45 version 7.45.41.23 (r606571) FWID 01-cc4eda9c
[    7.862602] brcmfmac: brcmf_cfg80211_reg_notifier: not a ISO3166 code
[    8.237706] brcmfmac: brcmf_cfg80211_reg_notifier: not a ISO3166 code
[    8.912479] brcmfmac: brcmf_add_if: ERROR: netdev:wlan0 already exists
[    8.912496] brcmfmac: brcmf_add_if: ignore IF event
[    8.916155] brcmfmac: power management disabled
[ 1017.948892] brcmfmac: power management disabled
Someone please can help? Thank you very much...

dchao99
Posts: 45
Joined: Fri Jan 15, 2016 9:26 pm

Re: WiFi Issues ? Start here !

Thu Mar 31, 2016 12:33 pm

jokreg wrote: This is lsusb output (no wifi adapter!):

Code: Select all

[email protected]:/home/pi# lsusb
Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp. SMSC9512/9514 Fast Ethernet Adapter
Bus 001 Device 002: ID 0424:9514 Standard Microsystems Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
The brcm43430 WiFi cipset is on the SDIO bus, not USB. So it will not show up using lsusb.
The dmesg shows the driver is loaded:

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[    7.603063] brcmfmac: brcmf_sdio_drivestrengthinit: No SDIO Drive strength init done for chip 43430 rev 1 pmurev 24
Please make sure the wlan power management is off and you have the latest firmware 4.1.19-v7+.
Even after that, I still can not get the onboard wifi to connect reliably using channel 11 ( very large ping delays). And if I am in the next room, the connection drops completely (whereas all other computers in that room are still working).
IMO, the Broadcom driver is still too buggy. The Tx power is too much for the little Pi? The developers need to fix it.

Code: Select all

$ iwconfig
wlan0     IEEE 802.11bgn  ESSID:"XXXXXX"  
          Mode:Managed  Frequency:2.462 GHz  Access Point: 88:1F:A1:37:89:20   
          Bit Rate=18 Mb/s   Tx-Power=1496 dBm   
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Power Management:off
          Link Quality=60/70  Signal level=-50 dBm  

jokreg
Posts: 2
Joined: Thu Mar 31, 2016 12:44 am

Re: WiFi Issues ? Start here !

Thu Mar 31, 2016 1:57 pm

My firmware seems to be 4.1.20.-v7+ :

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[email protected]:/home/pi# uname -a
Linux raspberrypi 4.1.20-v7+ #867 SMP Wed Mar 23 20:12:32 GMT 2016 armv7l GNU/Linux
And I turned power managment off:

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[email protected]:/home/pi# iwconfig
wlan0     IEEE 802.11bgn  ESSID:off/any
          Mode:Managed  Access Point: Not-Associated   Tx-Power=1496 dBm
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:off

lo        no wireless extensions.

eth0      no wireless extensions.
So do we have to just wait for a patch or future updates?

MrNice
Posts: 64
Joined: Thu Oct 17, 2013 10:18 am

Re: WiFi Issues ? Start here !

Mon Apr 04, 2016 1:34 pm

Hi,

I have a RPi1 512, this is the first time I have installed Raspbian from Noobs. I have the WIFI issue, difficult to connect and loss of packet
ie: 14 packets transmitted, 8 received, 42% packet loss, time 13008ms
I tried for more than 8 hours to find out what is this issue: Not a good experience for the first use of Raspbian!!

Code: Select all

uname -a
Linux raspberrypi 4.1.19+ #858 Tue Mar 15 15:52:03 GMT 2016 armv6l GNU/Linux
updated, upgrated

I'd like to try the Power Managment trick but I get

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 iwconfig wlan0 power off
Error for wireless request "Set Power Management" (8B2C) :
    SET failed on device wlan0 ; Operation not permitted.
What should I do to fix that?
Thanks

MrEngman
Posts: 3720
Joined: Fri Feb 03, 2012 2:17 pm
Location: Southampton, UK

Re: WiFi Issues ? Start here !

Mon Apr 04, 2016 1:59 pm

MrNice wrote:Hi,

I have a RPi1 512, this is the first time I have installed Raspbian from Noobs. I have the WIFI issue, difficult to connect and loss of packet
ie: 14 packets transmitted, 8 received, 42% packet loss, time 13008ms
I tried for more than 8 hours to find out what is this issue: Not a good experience for the first use of Raspbian!!

Code: Select all

uname -a
Linux raspberrypi 4.1.19+ #858 Tue Mar 15 15:52:03 GMT 2016 armv6l GNU/Linux
updated, upgrated

I'd like to try the Power Managment trick but I get

Code: Select all

 iwconfig wlan0 power off
Error for wireless request "Set Power Management" (8B2C) :
    SET failed on device wlan0 ; Operation not permitted.
What should I do to fix that?
Thanks
What is your wifi adapter? Post the output of command lsusb.



MrEngman
Simplicity is a prerequisite for reliability. Edsger W. Dijkstra

Please post ALL technical questions on the forum. Please Do Not send private messages.

MrNice
Posts: 64
Joined: Thu Oct 17, 2013 10:18 am

Re: WiFi Issues ? Start here !

Mon Apr 04, 2016 3:37 pm

Thank you for your fast answer.

Code: Select all

lsusb
Bus 001 Device 004: ID 0bda:8176 Realtek Semiconductor Corp. RTL8188CUS 802.11n WLAN Adapter
Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp. SMSC9512/9514 Fast Ethernet Adapter
Bus 001 Device 002: ID 0424:9512 Standard Microsystems Corp. LAN9500 Ethernet 10/100 Adapter / SMSC9512/9514 Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
FYI: I had to plug the dongle to get the output of lsusb. When I did it RPi rebooted, then I had difficulties to ssh and then to get the cursor, 5-10 seconds between each input. I used to run this hardware with Openelec/Kodi without any issue.

MrEngman
Posts: 3720
Joined: Fri Feb 03, 2012 2:17 pm
Location: Southampton, UK

Re: WiFi Issues ? Start here !

Mon Apr 04, 2016 3:44 pm

MrNice wrote:Thank you for your fast answer.

Code: Select all

lsusb
Bus 001 Device 004: ID 0bda:8176 Realtek Semiconductor Corp. RTL8188CUS 802.11n WLAN Adapter
Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp. SMSC9512/9514 Fast Ethernet Adapter
Bus 001 Device 002: ID 0424:9512 Standard Microsystems Corp. LAN9500 Ethernet 10/100 Adapter / SMSC9512/9514 Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
FYI: I had to plug the dongle to get the output of lsusb. When I did it RPi rebooted, then I had difficulties to ssh and then to get the cursor, 5-10 seconds between each input. I used to run this hardware with Openelec/Kodi without any issue.
This sort of thing can happen possibly depending on the access to your AP. Can be fixed by moving your Pi. Interference from other wifi devices, mobile phone for example, can cause this sort of problem as well.

To disable power management create file /etc/modprobe.d/8192cu.conf for example using command

Code: Select all

sudo nano /etc/modprobe.d/8192cu.conf
and add the single line

Code: Select all

options 8192cu rtw_power_mgnt=0 rtw_enusbss=0
Terminate the editor with keys cntl-x, y, enter. Reboot to make it active.



MrEngman
Simplicity is a prerequisite for reliability. Edsger W. Dijkstra

Please post ALL technical questions on the forum. Please Do Not send private messages.

nafalk
Posts: 4
Joined: Fri Oct 30, 2015 6:32 pm

Re: WiFi Issues ? Start here !

Mon Apr 04, 2016 4:22 pm

It was fine until I updated rasbian via wifi now it says no wireless interfaces available so i cant connect to new networks and when i edit the file it doesn't work either is there a specific way to put in multiple networks in the wpa suplicants file.

zipner
Posts: 3
Joined: Wed Mar 09, 2016 6:48 pm

Re: WiFi Issues ? Start here !

Mon Apr 04, 2016 4:26 pm

I am a newbie and am trying to set up a printer server with my new Raspberry Pi 3. I want to use the built in wifi. I have tried both the graphical interface and line command to connect it to my wifi network. Every time it has completely locked the Pi up. I have tried to reboot it via SSH with no luck. When I go to restart it often fails to boot and I have to completely reinstall the OS. I believe there is a a Kernel panic, it get either just stops or get caught in a loop and will not finish rebooting. I have managed to get this to work without this problem. I just can't see what the difference is.

MrNice
Posts: 64
Joined: Thu Oct 17, 2013 10:18 am

Re: WiFi Issues ? Start here !

Mon Apr 04, 2016 4:28 pm

To disable power management create file /etc/modprobe.d/8192cu.conf for example using command

Code: Select all
sudo nano /etc/modprobe.d/8192cu.conf

and add the single line

Code: Select all
options 8192cu rtw_power_mgnt=0 rtw_enusbss=0

Terminate the editor with keys cntl-x, y, enter. Reboot to make it active.
Done.
This improve the time when I ping. However still loss of packets

Code: Select all

61 packets transmitted, 38 received, 37% packet loss, time 60042ms
rtt min/avg/max/mdev = 1.988/5.824/8.820/1.350 ms
Previousely I tried a lot of commands in /etc/network/interfaces and /etc/wpa_supplicant/wpa_supplicant.conf.
Now in interfaces I have:

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# interfaces(5) file used by ifup(8) and ifdown(8)

# Please note that this file is written to be used with dhcpcd
# For static IP, consult /etc/dhcpcd.conf and 'man dhcpcd.conf'

# Include files from /etc/network/interfaces.d:
source-directory /etc/network/interfaces.d

auto lo
iface lo inet loopback

iface eth0 inet dhcp

allow-hotplug wlan0
iface wlan0 inet dhcp
wpa-ssid "name"
wpa-psk "password"
I don't have any idea how to fix that. Could you help?

Maikoule
Posts: 12
Joined: Sun Apr 03, 2016 3:34 pm

Re: WiFi Issues ? Start here !

Mon Apr 04, 2016 4:55 pm

jokreg wrote:I have some issue with my Raspberry Pi 3 Model B WiFi adapter...
Using aircrack-ng:

Code: Select all

[email protected]:/# airmon-ng start wlan0


Interface       Chipset         Driver

wlan0           Unknown         brcmfmac_sdio - [phy0]mon0: ERROR while gettinterface flags: No such device

                                (monitor mode enabled on mon0)
This is lsusb output (no wifi adapter!):

Code: Select all

[email protected]:/home/pi# lsusb
Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp. SMSC9512/9514 Fast Ethernet Adapter
Bus 001 Device 002: ID 0424:9514 Standard Microsystems Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
And this is dmesg output:

Code: Select all

[email protected]:/# dmesg | grep brcm
[    7.603063] brcmfmac: brcmf_sdio_drivestrengthinit: No SDIO Drive strength init done for chip 43430 rev 1 pmurev 24
[    7.603662] usbcore: registered new interface driver brcmfmac
[    7.841367] brcmfmac: brcmf_c_preinit_dcmds: Firmware version = wl0: Dec 15 2015 18:10:45 version 7.45.41.23 (r606571) FWID 01-cc4eda9c
[    7.862602] brcmfmac: brcmf_cfg80211_reg_notifier: not a ISO3166 code
[    8.237706] brcmfmac: brcmf_cfg80211_reg_notifier: not a ISO3166 code
[    8.912479] brcmfmac: brcmf_add_if: ERROR: netdev:wlan0 already exists
[    8.912496] brcmfmac: brcmf_add_if: ignore IF event
[    8.916155] brcmfmac: power management disabled
[ 1017.948892] brcmfmac: power management disabled
Someone please can help? Thank you very much...

I'm facing similar problems, can somebody help?
update and upgrade don't help :s

MrNice
Posts: 64
Joined: Thu Oct 17, 2013 10:18 am

Re: WiFi Issues ? Start here !

Mon Apr 04, 2016 5:26 pm

MrNice wrote:
To disable power management create file /etc/modprobe.d/8192cu.conf for example using command

Code: Select all
sudo nano /etc/modprobe.d/8192cu.conf

and add the single line

Code: Select all
options 8192cu rtw_power_mgnt=0 rtw_enusbss=0

Terminate the editor with keys cntl-x, y, enter. Reboot to make it active.
Done.
This improve the time when I ping. However still loss of packets

Code: Select all

61 packets transmitted, 38 received, 37% packet loss, time 60042ms
rtt min/avg/max/mdev = 1.988/5.824/8.820/1.350 ms
Previousely I tried a lot of commands in /etc/network/interfaces and /etc/wpa_supplicant/wpa_supplicant.conf.
Now in interfaces I have:

Code: Select all

# interfaces(5) file used by ifup(8) and ifdown(8)

# Please note that this file is written to be used with dhcpcd
# For static IP, consult /etc/dhcpcd.conf and 'man dhcpcd.conf'

# Include files from /etc/network/interfaces.d:
source-directory /etc/network/interfaces.d

auto lo
iface lo inet loopback

iface eth0 inet dhcp

allow-hotplug wlan0
iface wlan0 inet dhcp
wpa-ssid "name"
wpa-psk "password"
I don't have any idea how to fix that. Could you help?
After few minutes playing around with ssh to Pi2, I got this ping from another terminal window

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64 bytes from 192.168.0.121: icmp_seq=21 ttl=64 time=0.354 ms
64 bytes from 192.168.0.121: icmp_seq=22 ttl=64 time=0.341 ms
64 bytes from 192.168.0.121: icmp_seq=23 ttl=64 time=0.429 ms
64 bytes from 192.168.0.121: icmp_seq=24 ttl=64 time=0.359 ms
64 bytes from 192.168.0.121: icmp_seq=25 ttl=64 time=0.356 ms
64 bytes from 192.168.0.121: icmp_seq=26 ttl=64 time=0.360 ms
64 bytes from 192.168.0.121: icmp_seq=27 ttl=64 time=0.353 ms
64 bytes from 192.168.0.121: icmp_seq=28 ttl=64 time=0.368 ms
^C
--- 192.168.0.121 ping statistics ---
28 packets transmitted, 28 received, 0% packet loss, time 27001ms
rtt min/avg/max/mdev = 0.321/0.552/5.508/0.954 ms
Then I rebooted and got that from the same terminal window

Code: Select all

ping 192.168.0.121
PING 192.168.0.121 (192.168.0.121) 56(84) bytes of data.
64 bytes from 192.168.0.121: icmp_seq=7 ttl=64 time=6.04 ms
64 bytes from 192.168.0.121: icmp_seq=8 ttl=64 time=6.01 ms
64 bytes from 192.168.0.121: icmp_seq=9 ttl=64 time=7.34 ms
64 bytes from 192.168.0.121: icmp_seq=10 ttl=64 time=6.03 ms
64 bytes from 192.168.0.121: icmp_seq=11 ttl=64 time=6.01 ms
64 bytes from 192.168.0.121: icmp_seq=12 ttl=64 time=6.00 ms
64 bytes from 192.168.0.121: icmp_seq=13 ttl=64 time=5.24 ms
64 bytes from 192.168.0.121: icmp_seq=14 ttl=64 time=5.68 ms
^C
--- 192.168.0.121 ping statistics ---
14 packets transmitted, 8 received, 42% packet loss, time 13008ms
rtt min/avg/max/mdev = 5.243/6.047/7.342/0.554 ms
Very strange how the time can change, I think there is a bug.

dchao99
Posts: 45
Joined: Fri Jan 15, 2016 9:26 pm

Re: WiFi Issues ? Start here !

Wed Apr 06, 2016 11:37 am

MrNice wrote:
This improve the time when I ping. However still loss of packets
I don't have any idea how to fix that. Could you help?
A WiFi USB dongle needs a lot of power when transmitting, specially when the Receiving signal is weak. A lot of WiFi issues are related to power supply.
What sort of power supply and USB cable are you using? Cheap PSU and USB cables can not deliver power to the device reliably without introducing noise on the power line, voltage drop..... Try using use a solid USB cable, as short as possible.

MrNice
Posts: 64
Joined: Thu Oct 17, 2013 10:18 am

Re: WiFi Issues ? Start here !

Wed Apr 06, 2016 3:50 pm

I don't think at all it is an hardware issue; WiFi works fine with Openelec/Kodi, PSU is 2A (TP1-TP2=5.1V with dongle blinking), RPi is at 1meter from AP, RPi is headless nothing connected to RPi, only Ethernet for setup.
I tried with another same brand/ref dongle, same issue.
I'll start over from scratch. If this is the same I'll give up.

MrNice
Posts: 64
Joined: Thu Oct 17, 2013 10:18 am

Re: WiFi Issues ? Start here !

Thu Apr 07, 2016 8:00 am

Just to add how I am not happy with Raspbian:
I did a reinstall from scratch of Raspbian lite, just what I wanted to test LIRC.
Headless, easy to install.
Now I test ping from WiFi

Code: Select all

ping 192.168.0.121
PING 192.168.0.121 (192.168.0.121) 56(84) bytes of data.
64 bytes from 192.168.0.121: icmp_seq=1 ttl=64 time=74.1 ms
64 bytes from 192.168.0.121: icmp_seq=2 ttl=64 time=96.9 ms
64 bytes from 192.168.0.121: icmp_seq=3 ttl=64 time=118 ms
64 bytes from 192.168.0.121: icmp_seq=4 ttl=64 time=39.5 ms
64 bytes from 192.168.0.121: icmp_seq=5 ttl=64 time=62.0 ms
64 bytes from 192.168.0.121: icmp_seq=6 ttl=64 time=81.6 ms
64 bytes from 192.168.0.121: icmp_seq=7 ttl=64 time=4.59 ms
64 bytes from 192.168.0.121: icmp_seq=8 ttl=64 time=5.96 ms
64 bytes from 192.168.0.121: icmp_seq=9 ttl=64 time=49.7 ms
64 bytes from 192.168.0.121: icmp_seq=10 ttl=64 time=71.8 ms
^C
--- 192.168.0.121 ping statistics ---
10 packets transmitted, 10 received, 0% packet loss, time 9013ms
rtt min/avg/max/mdev = 4.597/60.542/118.973/34.877 ms
As I said, the RPi1/dongle is 1 m far the AP.
To compare with Openelec/Kodi on a RPi2 in the other room (5m, 2 walls)

Code: Select all

 ping 192.168.0.119
PING 192.168.0.119 (192.168.0.119) 56(84) bytes of data.
64 bytes from 192.168.0.119: icmp_seq=1 ttl=64 time=5.92 ms
64 bytes from 192.168.0.119: icmp_seq=2 ttl=64 time=5.90 ms
64 bytes from 192.168.0.119: icmp_seq=3 ttl=64 time=5.95 ms
64 bytes from 192.168.0.119: icmp_seq=4 ttl=64 time=6.00 ms
64 bytes from 192.168.0.119: icmp_seq=5 ttl=64 time=5.96 ms
64 bytes from 192.168.0.119: icmp_seq=6 ttl=64 time=5.92 ms
64 bytes from 192.168.0.119: icmp_seq=7 ttl=64 time=5.69 ms
64 bytes from 192.168.0.119: icmp_seq=8 ttl=64 time=5.95 ms
64 bytes from 192.168.0.119: icmp_seq=9 ttl=64 time=6.03 ms
^C
--- 192.168.0.119 ping statistics ---
9 packets transmitted, 9 received, 0% packet loss, time 8010ms
rtt min/avg/max/mdev = 5.693/5.929/6.034/0.104 ms
Have a look on the avg and max!
Now I stop power management with the above howto and reboot. Ping:

Code: Select all

ping 192.168.0.121
PING 192.168.0.121 (192.168.0.121) 56(84) bytes of data.
64 bytes from 192.168.0.121: icmp_seq=7 ttl=64 time=5.93 ms
64 bytes from 192.168.0.121: icmp_seq=8 ttl=64 time=5.66 ms
64 bytes from 192.168.0.121: icmp_seq=13 ttl=64 time=6.04 ms
64 bytes from 192.168.0.121: icmp_seq=14 ttl=64 time=6.03 ms
64 bytes from 192.168.0.121: icmp_seq=15 ttl=64 time=5.97 ms
64 bytes from 192.168.0.121: icmp_seq=16 ttl=64 time=5.93 ms
64 bytes from 192.168.0.121: icmp_seq=17 ttl=64 time=8.88 ms
64 bytes from 192.168.0.121: icmp_seq=18 ttl=64 time=5.98 ms
64 bytes from 192.168.0.121: icmp_seq=19 ttl=64 time=5.97 ms
64 bytes from 192.168.0.121: icmp_seq=20 ttl=64 time=6.00 ms
64 bytes from 192.168.0.121: icmp_seq=21 ttl=64 time=2.86 ms
64 bytes from 192.168.0.121: icmp_seq=22 ttl=64 time=6.01 ms
^C
--- 192.168.0.121 ping statistics ---
22 packets transmitted, 12 received, 45% packet loss, time 21014ms
rtt min/avg/max/mdev = 2.866/5.942/8.887/1.236 ms
Lost packets are along the ping by groups.
So I'll reinstall Openelec/Kodi on this RPi1 512 and try again with the same hardware.
BTW, is there another lite OS (working) for RPi1 512 I could install, easy to use headless with LIRC? I can find only for RPi2.

MrNice
Posts: 64
Joined: Thu Oct 17, 2013 10:18 am

Re: WiFi Issues ? Start here !

Thu Apr 07, 2016 8:11 am

Lucky me!
I found at the end of a drawer, an SD card with Openelec/Kodi on it. So far I don't know the version because I only ping it

Code: Select all

ping 192.168.0.121
PING 192.168.0.121 (192.168.0.121) 56(84) bytes of data.
64 bytes from 192.168.0.121: icmp_seq=1 ttl=64 time=5.94 ms
64 bytes from 192.168.0.121: icmp_seq=2 ttl=64 time=5.97 ms
64 bytes from 192.168.0.121: icmp_seq=3 ttl=64 time=5.37 ms
64 bytes from 192.168.0.121: icmp_seq=4 ttl=64 time=5.73 ms
64 bytes from 192.168.0.121: icmp_seq=5 ttl=64 time=5.96 ms
64 bytes from 192.168.0.121: icmp_seq=6 ttl=64 time=6.54 ms
64 bytes from 192.168.0.121: icmp_seq=7 ttl=64 time=6.01 ms
64 bytes from 192.168.0.121: icmp_seq=8 ttl=64 time=6.17 ms
64 bytes from 192.168.0.121: icmp_seq=9 ttl=64 time=6.07 ms
64 bytes from 192.168.0.121: icmp_seq=10 ttl=64 time=3.04 ms
64 bytes from 192.168.0.121: icmp_seq=11 ttl=64 time=5.95 ms
64 bytes from 192.168.0.121: icmp_seq=12 ttl=64 time=4.22 ms
^C
--- 192.168.0.121 ping statistics ---
12 packets transmitted, 12 received, 0% packet loss, time 11014ms
rtt min/avg/max/mdev = 3.040/5.584/6.544/0.947 ms
So, same hardware the the above post. What a difference, is not it?
I'll ssh now

Edit:

Code: Select all

OpenELEC (unofficial) Version: devel-20151216210355-#1216-gd358736
KODI 17.0 ALPHA-1
As I said, no ping loss, snappy...
I'll try to test LIRC with it.
Thank you all of you who helped me, I go away from Raspbian. Maybe I'll be back for the next stable version...

loadbang
Posts: 33
Joined: Mon Aug 13, 2012 4:56 pm

Re: WiFi Issues ? Start here !

Thu Apr 07, 2016 3:57 pm

Set a static IP for wlan0 on my new RPi 3, it renders to wi-fi adapter inoperable. The system does not see the wifi card. I have reinstalled Raspbian twice and got to the same bug.

Tried kernel:
Linux rpi3 4.1.19-v7+ #858 SMP Tue Mar 15 15:56:00 GMT 2016 armv7l GNU/Linux

and:

Linux rpi3 4.1.21-v7+ #872 SMP Wed Apr 6 17:34:14 BST 2016 armv7l GNU/Linux

:cry:

demosa
Posts: 5
Joined: Fri Apr 08, 2016 4:14 am

Re: WiFi Issues ? Start here !

Fri Apr 08, 2016 4:20 am

I just got a PRi3 and installed Raspbian via NOOBS.

Like many others I cannot connect to my Wifi... I did update/upgrade via ethernet cable but still not working.
I see the little "double computer" icon on the top right and I see my SSID listed. I click on it, enter the password but nothing happens.

It is very disappointing, especially given that built-in WiFi is one of the "hot" new features...

dchao99
Posts: 45
Joined: Fri Jan 15, 2016 9:26 pm

Re: WiFi Issues ? Start here !

Fri Apr 08, 2016 8:22 pm

loadbang wrote:The system does not see the wifi card. I have reinstalled Raspbian twice and got to the same bug.
try debugging it with
dmesg | grep brcm

dchao99
Posts: 45
Joined: Fri Jan 15, 2016 9:26 pm

Re: WiFi Issues ? Start here !

Fri Apr 08, 2016 10:18 pm

demosa wrote: I see the little "double computer" icon on the top right and I see my SSID listed. I click on it, enter the password but nothing happens.
That simply means you've entered an incorrect password.

demosa
Posts: 5
Joined: Fri Apr 08, 2016 4:14 am

Re: WiFi Issues ? Start here !

Sat Apr 09, 2016 5:14 am

Hm incorrect password !
I actually found a nearby open network and the RPi3 can connect to it just fine.
So you've got me there! ... I enter the password (this is a WEP key) in hex, for example: b652ff8af1
And yes, I've double and triple checked that is the correct password that I use on my phone for example... is that not the expected format ?

thanks
Last edited by demosa on Sat Apr 09, 2016 2:41 pm, edited 1 time in total.

demosa
Posts: 5
Joined: Fri Apr 08, 2016 4:14 am

Re: WiFi Issues ? Start here !

Sat Apr 09, 2016 5:46 am

I found out what the problem is !!

I actually entered the password correctly but it is saved in wpa_suplicant.conf incorrectly, in the sense that it shows up there surrounded by double quotes. So I enter b652ff8af1 but in the file it shows up as
wep_key0="b652ff8af1"

After removing the double quotes, it works just fine !!

jgangwisch
Posts: 1
Joined: Sat Apr 09, 2016 6:12 pm

Wifi Stopped working Re: WiFi Issues ? Start here !

Sun Apr 10, 2016 9:38 pm

Howdy folks.

Raspberry Pi 3, running NOOBs 1.9.0 with Adafruit 3.5" PiTFT Easy Install Kernal.

The wifi was working fine. I unplugged the machine, plugged it back in across town. "No Wifi Interface Detected."

Before the "hold shift for recovery" screen, I see this:

[ 1.089810] brcmfmac: brcmf_chip_recognition: SB chip is not supported
[ 1.089889] brcmfmac: brcmf_sdio_probe_attach: brcmf_chip_attach failed!
[ 1.089950] brcmfmac: brcmf_sdio_probe: brcmf_sdio_probe_attach failed
[ 1.090165] brcmfmac: brcmf_ops_sdio_probe: F2 error, probe failed -19...
/init: line 27: can't create /sys/class/leds/led0/trigger: nonexistent directory.

While the adafruit kernal boots I get this additional error message:

[FAILED] Failed to start configure Bluetooth M...d by UART. See 'systemctl status hciuart.service for details.

I plugged in a random ralink wireless adaptor and I can get wireless just fine through that. Still, I can't find any other posts with users whose built in wireless chips just stopped working this way. I've flashed the operating system over and over again, used apt-get update and rpi-update, no change whatsover.

Any advice?

Thank you!

alanredbull
Posts: 3
Joined: Tue Apr 12, 2016 2:59 pm

Re: WiFi Issues ? Start here !

Tue Apr 12, 2016 3:50 pm

Hi,
I just got a pi3, and i want to connect to my school wifi (WPA2 enterprise).

But i dont know how to do it. I watched around, it seems like i need to edit wpa_supplicant.conf file ? Can some one give me a hint what should i do?

So far I can connect to open network, but when i click on the my school network, nothing happens.

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