Lost all network communication in GoPiGo


#1

During SSH+VNC Session I suddenly lost all communication to the GoPiGo. It doesn’t connect back to the Wi-fi after hard restart, and it doesn’t send any packet when connected to teh Ethernet NIC (I verified with a sniffer).

From the SD Card I see an error on start in the wifi driver.
What do I do? Is there any information to glean from the flashing leds?

Apr 29 18:17:05 dex kernel: [ 7.709355] ------------[ cut here ]------------
Apr 29 18:17:05 dex kernel: [ 7.709494] WARNING: CPU: 2 PID: 46 at net/wireless/sme.c:921 __cfg80211_disconnected+0x3bc/0x3d4 cfg80211
Apr 29 18:17:05 dex kernel: [ 7.709506] Modules linked in: lirc_dev rc_core 8192cu brcmfmac brcmutil cfg80211 rfkill snd_bcm2835 snd_pcm snd_timer snd spi_bcm2835 bcm2835_gpiomem bcm2835_wdt uio_pdrv_genirq uio i2c_dev i2c_bcm2708 fuse ipv6
Apr 29 18:17:05 dex kernel: [ 7.709608] CPU: 2 PID: 46 Comm: kworker/2:1 Tainted: G C 4.4.50-v7+ #970
Apr 29 18:17:05 dex kernel: [ 7.709618] Hardware name: BCM2709
Apr 29 18:17:05 dex kernel: [ 7.709644] Workqueue: usb_hub_wq hub_event
Apr 29 18:17:05 dex kernel: [ 7.709689] [<800187c0>] (unwind_backtrace) from [<80014094>] (show_stack+0x20/0x24)
Apr 29 18:17:05 dex kernel: [ 7.709718] [<80014094>] (show_stack) from [<80321ce4>] (dump_stack+0xd4/0x118)
Apr 29 18:17:05 dex kernel: [ 7.709752] [<80321ce4>] (dump_stack) from [<8002541c>] (warn_slowpath_common+0x98/0xc8)
Apr 29 18:17:05 dex kernel: [ 7.709792] [<8002541c>] (warn_slowpath_common) from [<80025508>] (warn_slowpath_null+0x2c/0x34)
Apr 29 18:17:05 dex kernel: [ 7.709904] [<80025508>] (warn_slowpath_null) from [<7f143ae8>] (__cfg80211_disconnected+0x3bc/0x3d4 [cfg80211])
Apr 29 18:17:05 dex kernel: [ 7.710099] [<7f143ae8>] (__cfg80211_disconnected [cfg80211]) from [<7f11b5b8>] (cfg80211_process_wdev_events+0x198/0x1a0 [cfg80211])
Apr 29 18:17:05 dex kernel: [ 7.710282] [<7f11b5b8>] (cfg80211_process_wdev_events [cfg80211]) from [<7f1184cc>] (cfg80211_netdev_notifier_call+0x328/0x600 [cfg80211])
Apr 29 18:17:05 dex kernel: [ 7.710382] [<7f1184cc>] (cfg80211_netdev_notifier_call [cfg80211]) from [<800439a8>] (notifier_call_chain+0x54/0x94)
Apr 29 18:17:05 dex kernel: [ 7.710408] [<800439a8>] (notifier_call_chain) from [<80043b70>] (raw_notifier_call_chain+0x28/0x30)
Apr 29 18:17:05 dex kernel: [ 7.710435] [<80043b70>] (raw_notifier_call_chain) from [<804d0b10>] (call_netdevice_notifiers_info+0x40/0x68)
Apr 29 18:17:05 dex kernel: [ 7.710460] [<804d0b10>] (call_netdevice_notifiers_info) from [<804d46d8>] (rollback_registered_many+0x210/0x328)
Apr 29 18:17:05 dex kernel: [ 7.710485] [<804d46d8>] (rollback_registered_many) from [<804d4828>] (rollback_registered+0x38/0x50)
Apr 29 18:17:05 dex kernel: [ 7.710507] [<804d4828>] (rollback_registered) from [<804d74e4>] (unregister_netdevice_queue+0x64/0xbc)
Apr 29 18:17:05 dex kernel: [ 7.710533] [<804d74e4>] (unregister_netdevice_queue) from [<804d7564>] (unregister_netdev+0x28/0x30)
Apr 29 18:17:05 dex kernel: [ 7.710671] [<804d7564>] (unregister_netdev) from [<7f313bfc>] (rtw_unregister_netdevs+0x54/0x74 [8192cu])
Apr 29 18:17:05 dex kernel: [ 7.710934] [<7f313bfc>] (rtw_unregister_netdevs [8192cu]) from [<7f314b48>] (rtw_dev_remove+0x2c/0x7c [8192cu])
Apr 29 18:17:05 dex kernel: [ 7.711082] [<7f314b48>] (rtw_dev_remove [8192cu]) from [<80419b28>] (usb_unbind_interface+0x80/0x284)
Apr 29 18:17:05 dex kernel: [ 7.711118] [<80419b28>] (usb_unbind_interface) from [<803ab084>] (__device_release_driver+0x94/0x110)
Apr 29 18:17:05 dex kernel: [ 7.711158] [<803ab084>] (__device_release_driver) from [<803ab12c>] (device_release_driver+0x2c/0x38)
Apr 29 18:17:05 dex kernel: [ 7.711187] [<803ab12c>] (device_release_driver) from [<803aa1bc>] (bus_remove_device+0xe8/0x114)
Apr 29 18:17:05 dex kernel: [ 7.711213] [<803aa1bc>] (bus_remove_device) from [<803a6d50>] (device_del+0x11c/0x224)
Apr 29 18:17:05 dex kernel: [ 7.711234] [<803a6d50>] (device_del) from [<80417170>] (usb_disable_device+0xb0/0x1f4)
Apr 29 18:17:05 dex kernel: [ 7.711260] [<80417170>] (usb_disable_device) from [<8040e418>] (usb_disconnect+0x7c/0x23c)
Apr 29 18:17:05 dex kernel: [ 7.711286] [<8040e418>] (usb_disconnect) from [<8040e59c>] (usb_disconnect+0x200/0x23c)
Apr 29 18:17:05 dex kernel: [ 7.711313] [<8040e59c>] (usb_disconnect) from [<8040fee8>] (hub_event+0x5d4/0x10b8)
Apr 29 18:17:05 dex kernel: [ 7.711341] [<8040fee8>] (hub_event) from [<8003c930>] (process_one_work+0x154/0x458)
Apr 29 18:17:05 dex kernel: [ 7.711377] [<8003c930>] (process_one_work) from [<8003cc88>] (worker_thread+0x54/0x500)
Apr 29 18:17:05 dex kernel: [ 7.711409] [<8003cc88>] (worker_thread) from [<80042954>] (kthread+0xec/0x104)
Apr 29 18:17:05 dex kernel: [ 7.711432] [<80042954>] (kthread) from [<8000fbe8>] (ret_from_fork+0x14/0x2c)
Apr 29 18:17:05 dex kernel: [ 7.711446] —[ end trace da1b982629f0e028 ]—