root@beaglebone:~# sudo iwconfig wlan0 power off
Error for wireless request "Set Power Management" (8B2C) :
SET failed on device wlan0 ; Operation not supported.
My device does not seem to support power management. But I also will try if
the problem exist in this kernel.
Please wait for my results
RobertCNelson於 2015年7月30日星期四 UTC+8上午9時02分47秒寫道：
>
> On Wed, Jul 29, 2015 at 8:00 PM, Robert Nelson <[email protected]
> <javascript:>> wrote:
> > Please retest with: 4.1.3-ti-r6
> >
> > cd /opt/scripts/tools/
> > git pull
> >
> > sudo ./update_kernel.sh --ti-kernel --beta
> >
> >
> >
> > On Wed, Jul 29, 2015 at 7:53 PM, Sina Chou <[email protected]
> <javascript:>> wrote:
> >> I use D-Link Corp. DWA-121 802.11n Wireless N 150 on beaglebone black
> RevC.
> >> For USB hotplug purpose, I update my kernel to EXPERIMENTAL
> 4.2.0-rc4-bone2
> >> and TESTING 4.1.0-rc8-bone9.
> >> However, I found that on newer version compared to STABLE 3.8.13-bone73
> ,
> >> ping packet loss rate is higher.
> >> some packets response ""Destination Host Unreachable"
> >> Anyone having idea or have similar problems?
> >
> > Please retest with: 4.1.3-ti-r6
> >
> > cd /opt/scripts/tools/
> > git pull
> >
> > sudo ./update_kernel.sh --ti-kernel --beta
> >
> > Then create a file /etc/modprobe.d/8192cu.conf with the following
> contents:
> >
> > options 8192cu rtw_power_mgnt=0 rtw_enusbss=0
>
> Sorry this ^8192cu step was for the old driver, for the mainline just:
>
> sudo iwconfig wlan0 power off
>
> to disable power managment...
>
> Regards,
>
> --
> Robert Nelson
> https://rcn-ee.com/
>
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