I'm having a bit of trouble getting my wireless power-saving to work. I'm using TLP, which has a wireless power save option which I've set to "on". However, when I run iwconfig it appears power-saving is disabled:
wlan0 IEEE 802.11bgn ESSID:"dd-wrt" Mode:Managed Frequency:2.412 GHz Access Point: 68:7F:74:08:05:81 Bit Rate=18 Mb/s Tx-Power=20 dBm Retry long limit:7 RTS thr=2347 B Fragment thr:off Encryption key:off Power Management:off Link Quality=70/70 Signal level=-37 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:0 Invalid misc:221 Missed beacon:0
When I try setting it manually I get an error:
sudo iwconfig wlan0 power on Error for wireless request "Set Power Management" (8B2C) : SET failed on device wlan0 ; Operation not supported.
Here's the relevant output of lspci:
03:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8191SEvB Wireless LAN Controller (rev 10)
I'm using the rtl8192se module, which has an option "ips" which enables link power saving. It defaults to "on", but I manually turned it on as well. Still no dice.
Does anyone have any ideas on how I can get wireless power-saving to work? Anyone with a thinkpad t410 had any luck?
Thanks in advance!
You could try installing the "iw" package and see if that gives you any luck:
iw dev wlan0 set power_save on
With iw I get:
command failed: Operation not supported (-95)
The realtek power saving feature does not work. At least I could never get it to work, nor could I ever find relevent documentation regarding powersaving on the device. It is kind of crappy IMO.
Well, I know it should theoretically be possible to turn on wifi powersaving because when I was running linux mint debian edition previously (3.2.0) everything worked fine.