Flaky wireless Power Management?

English Network/Internet
1

My wireless connection has suddenly become a problem on this machine. It works eventually although I cannot really see what is happening differently to suddenly start it.

On ifup I am getting

 # ifup wlan1
    wlan1     name: RTL8188S WLAN Adapter
command 'iwconfig wlan1 power off' returned
 Error for wireless request "Set Power Management" (8B2C) :
    SET failed on device wlan1 ; Operation not permitted.

Is this significant and why has it suddenly started to happen?

Any help gratefully received.

John F

2

On 12/09/2011 05:46 AM, jfarrar wrote:
>
> My wireless connection has suddenly become a problem on this machine.
> It works eventually although I cannot really see what is happening
> differently to suddenly start it.
>
> On ifup I am getting
>
>
> Code:
> --------------------
> # ifup wlan1
> wlan1 name: RTL8188S WLAN Adapter
> command ‘iwconfig wlan1 power off’ returned
> Error for wireless request “Set Power Management” (8B2C) :
> SET failed on device wlan1 ; Operation not permitted.
>
> --------------------
>
>
> Is this significant and why has it suddenly started to happen?

Although I have done extensive work on the drivers for RTL81XX devices, I have
no idea what an RTL8188S is. If it is a PCI device, please post the output of
‘lspci -n’. If USB, then post the output of ‘lsusb’.

What version of openSUSE? What desktop? It appears that you are using ifup. Is
that correct?

3

Thanks for the reply Larry.

lsusb gives:


Bus 001 Device 005: ID 0bda:8171 Realtek Semiconductor Corp. RTL8188SU 802.11n WLAN Adapter

Using ifup on 12.1 KDE 4.7

Still getting the same message on #ifup but seems to be connecting properly now.

Quick edit:

Changing the wlan adapter lsusb gives:

Bus 001 Device 007: ID 148f:2870 Ralink Technology, Corp. RT2870 Wireless Adapter

and ifup gives

ifup wlan0
    wlan0     name: 802.11 n WLAN
command 'iwconfig wlan0 power period 2' returned
 Error for wireless request "Set Power Management" (8B2C) :
    SET failed on device wlan0 ; Invalid argument.
    wlan0     warning: WPA configured, but is untested
    wlan0     warning: with this device
    wlan0     warning: wpa_supplicant already running on interface

This was the adapter I used before the issue arose and now it will not connect.

John F.

4

Sort of solved. This is bug

Changing the power management setting in /etc/sysconfig/network/ifconfig-wlan* to “none” seems to sort it.

5

I wonder why it is marked as “solved”? I have this issue after upgrading to openSUSE 12.2!

6

And there is no such ifconfig branch in oS 12.2, what should I do?

7

On Sun, 21 Oct 2012 10:16:01 +0000, Ansus wrote:

> I wonder why it is marked as “solved”? I have this issue after upgrading
> to openSUSE 12.2!

Considering that you’re responding to a thread that’s almost a year old,
chances that for the user who asked the question, they got it working.

If you’re having a new issue with this with a new version of openSUSE,
you might start a new thread and provide some details.

Jim

–
Jim Henderson
openSUSE Forums Administrator
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