Issue with connman after reboot

[AMaza]

A friend of mine is trying to setup connman on yocto 3.0 and having an issue with connman not working after reboot. Steps to repro:

Setting up connections works first time:

root@edison:~# connmanctl

connmanctl> services

*AR cadsfb wifi_fcc2de344121_636164736662_managed_psk

EY bluetooth_984FEE03DEAE_78FD941A39A0

connmanctl> agent on

Agent registered

connmanctl> connect bluetooth_984FEE03DEAE_78FD941A39A0

Connected bluetooth_984FEE03DEAE_78FD941A39A0

connmanctl> exit

root@edison:~# ping http://google.com/ google.com

PING http://google.com/ google.com (172.217.3.46): 56 data bytes

64 bytes from 172.217.3.46: seq=0 ttl=53 time=52.025 ms

64 bytes from 172.217.3.46: seq=1 ttl=53 time=142.419 ms

64 bytes from 172.217.3.46: seq=2 ttl=53 time=60.363 ms

After reboot:

Poky (Yocto Project Reference Distro) 1.7.3 edison ttyMFD2

edison login: root

root@edison:~# connmanctl

connmanctl> servicees

Error 'servicees': Unknown command

connmanctl> services

connmanctl> scan wifi

Error getting services: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.conError getting peers: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.connmaError getting technologies: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was brokenError: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.

Error /net/connman/technology/wifi: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken.

I have not seen this error on my instances, any hint?

[idata]

Hi,

I haven't been able to replicate the same issue. Are you using connman 1.27? Please let me know if something else has been installed or modified in the image.Also, have you tried with disable wifi and enable wifi while using the commanctl command line?Is this also after being connected to a wifi network? I saw you are using the bluetooth_984FEE03DEAE_78FD941A39A0 service.Is the board only using connman? Or it was also connected using configure_edison --setup?Are you doing changes in the /var/lib/connman/settings file?Please let me know as much you can regarding this case so I could try to replicate it.Regards,Charlie

[EYim]

Hi Charlie,

Thank you for your help on this.

To answer your questions:

• I tried disable / enable wifi with no effect.
• I had used configure_edison --setup previously but just retested without doing this and got the same effect.
• I made no change to /var/lib/connman/settings
• I've tested on two different edison's and have the same problem

Edward

[idata]

Hi Edward,

Try by restarting the services for wpa_supplicant and connman with:systemctl restart wpa_supplicant systemctl restart connmanI've been able to obtain some issues, but not yours yet (restarting the services solves the problems in my case), let me know step by step what you are doing so I could replicate it starting with a fresh new flashed image on the board (https://communities.intel.com/docs/DOC-25154 https://communities.intel.com/docs/DOC-25154).Also, post a screenshot of the status of connman and wpa_supplicant service (systemctl status wpa_supplicant && systemctl status connman)While the board is booting, have you seen errors while loading a service or does everything looks OK?Kind regards,Charlie

[EYim]

Hi Charlie,

Okay it even gets stranger. Looks like the problem is intermittent which is really strange. Attached is a log of everything I did on a board already set up that worked once yesterday but then showed the strange behavior on reboot.

https://www.dropbox.com/s/6bjpr23yxc7khm7/command_example.txt?dl=0 Dropbox - command_example.txt

As you can see, the first time I logged into today, it worked like magic. Then I simply rebooted and it no longer worked. I tried the systemctl restart wpa_supplicant and systemctl restart connman but it didn't help.

Edward

[EYim]

After multiple tests, I can confirm that sometimes everything works perfectly after a reboot and other times it gives the error previously mentioned with no changes to the system other than rebooting it.

[idata]

Hi Edward,

I would like to know if you have tried with a previous release, just to check if happens the same, if doesn't we could use it as a workaround: http://downloadmirror.intel.com/25384/eng/edison-iotdk-image-280915.zip I saw the log you posted and is indeed very odd. As you can see, when you run services, it doesn't show the HWaddr on the hashA (wifi_000000000000).When you run ifconfig, are you able to see the HWaddr? Please post a screenshot of what you get when running ifconfig.Before using connmanctl, always check the status of the connman and wpa_supplicant services, once on connmanctl, run enable wifi, scan wifi, services, agent on and finally connect; this in order to avoid problems in the connection.Let me know about the HWaddr, and the results of testing with another release.Kind regards,Charlie

[EYim]

Hi Charlie,

This older release seems to be working fine on the first edison. Thank you for the help. I'll continue testing on my other edison and let you know if I continue to have issues with this older release.

[AMaza]

Thank you Charlie,

Like you I haven't been able to reproduce, but this has happened 3 times on his side, I asked him to respond. But here is what I know:

• Not sure if he tried disable/enable wifi, we can try that.
• Both Bluetooth and wifi works first time after configuring connman
• Not sure if any changes been made manually to /var/lib/connman/settings

Thank you for support, will keep you posted.

Ali

[AMaza]

Hi guys, I just reflashed our new Intel Edison with yocto 3.0 and configure connman, connman worked post several reboots. Here is what I did:

1) Flash the Edison

2) Logged in via Serial

3) Ran configure_edison --setup (Didn't configure wifi)

4) systemctl stop wpa_supplicant

5) systemctl disable wpa_supplicant

6) systemctl enable connman

7) systemctl start connman

and configure a wifi connection to our home AP