[fedora-arm] wlan0 de-activated?

[Robert Brown]

Hi
On 27/02/15 23:18, Peter Robinson wrote:
>>>> Running Fedora release 22 (Rawhide) 3.19.0-0.rc7.git3.1.fc22.armv7hl I
>>>> find
>>>> I have a problem with wlan0 becoming de-activated.
>>>> Running headless, attempt to ssh to device. No response. Turn on monitor
>>>> at
>>>> device.
>>>> ifconfig shows an ip address ok.
>>>> cannot ping router
>>>> try sudo systemctl restart network.service
>>>> no change
>>>> decide to ifdown/ifup wlan0
>>>> system returns to normal, can then ping router and ssh to device from my
>>>> laptop.
>>>> journalctl for wlan0 gives results as per attached.
>>>> Can anyone explain what is happening to the wlan0 device and why I have
>>>> to
>>>> re-activate it?
>>> What device?
>> Rikomagic MK802II
>>> Anything in dmesg about crashes?
>> Nothing there. No errors reported.
>>> It's not the firewall
>>> getting in the way?
>> This is just internal network comms. I don't think the firewall is involved.
>> Would cycling the wlan0 device clear anything with the firewall?
> Looking at google it looks like a Ralink8188 device, is it attached
> via usb or some other manner?
The on-board wireless adapter requires a rtl8188eu module which I have 
not got around to compiling yet so am using a USB device also a Realtek 
but requires a RTL8191SU module.
> How is the mk802ii powered? If it's via
> usb make sure it's got a 2A PSU as we had a similar issue (usb dying
> after a period of time) reported here with a CubieTruck recently which
> was fixed by powering the device with a more powerful power supply.
The PS is a 3A through a powered USB hub but I may need to try the 
wireless device in another port for more available power. Thanks for the 
tip. Will check it out.

Rob