Edimax EW-7811UTC wifi dongle support RPi3?

**nickrob84** · June 5, 2016 at 9:09 PM

wlan1 Link encap:Ethernet HWaddr 74:DA:38:73:41:B3
inet addr:192.168.1.106 Bcast:192.168.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:80274 errors:0 dropped:58 overruns:0 frame:0
TX packets:692 errors:0 dropped:18 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:2319460 (2.2 MiB) TX bytes:145074 (141.6 KiB)

LibreELEC-U:~ # lsusb -t
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=dwc_otg/1p, 480M
|__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/5p, 480M
|__ Port 1: Dev 3, If 0, Class=Vendor Specific Class, Driver=smsc980M
|__ Port 4: Dev 4, If 0, Class=Vendor Specific Class, Driver=rtl88480M

this make sense to anyone? In particular to the 5G instability?

**nickrob84** · June 5, 2016 at 11:55 PM

Does anyone one know how to turn off the power management on this adapted before I hang myself?

**nickrob84** · June 6, 2016 at 5:14 PM

I can honestly say I have never had an issue like this for years. I must of put at least 50 hours into solving how to turn the damn power management off wlan1 permenantly and still nothing. I have learnt the inside and outside of SSH/putty/commands as a bonus though. Please somebody must know?

**lrusak** · June 6, 2016 at 8:43 PM Official Post

look at the output of

Code

lsmod

then find the kernel module in use, for example mine is "8192cu"

then run

Code

modinfo --parameters <module name>

for example mine shows

Code

LibreELEC:~ # modinfo --parameters 8192cu
rtw_ips_mode:The default IPS mode (int)
ifname:The default name to allocate for first interface (charp)
if2name:The default name to allocate for second interface (charp)
rtw_initmac: (charp)
rtw_channel_plan: (int)
rtw_chip_version: (int)
rtw_rfintfs: (int)
rtw_lbkmode: (int)
rtw_network_mode: (int)
rtw_channel: (int)
rtw_mp_mode: (int)
rtw_wmm_enable: (int)
rtw_vrtl_carrier_sense: (int)
rtw_vcs_type: (int)
rtw_busy_thresh: (int)
rtw_ht_enable: (int)
rtw_cbw40_enable: (int)
rtw_ampdu_enable: (int)
rtw_rx_stbc: (int)
rtw_ampdu_amsdu: (int)
rtw_lowrate_two_xmit: (int)
rtw_rf_config: (int)
rtw_power_mgnt: (int)
rtw_low_power: (int)
rtw_wifi_spec: (int)
rtw_special_rf_path: (int)
rtw_antdiv_cfg: (int)
rtw_enusbss: (int)
rtw_hwpdn_mode: (int)
rtw_hwpwrp_detect: (int)
rtw_hw_wps_pbc: (int)
rtw_max_roaming_times:The max roaming times to try (uint)
rtw_force_iol:Force to enable IOL (bool)
rtw_mc2u_disable: (int)
rtw_mac_phy_mode: (int)
rtw_80211d: (int)
rtw_notch_filter:0[img]https://forum.libreelec.tv/images/smilies/biggrin.png[/img]isable, 1:Enable, 2:Enable only for P2P (uint)

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then

Code

echo "options 8192cu rtw_power_mgnt=0" >> /storage/.config/modprobe.d/8192cu.conf

to check if it is working, reboot, then run the following (make sure to adjust to your module name)

Code

for i in /sys/bus/usb/drivers/rtl8192cu/module/parameters/*; do
  echo "$i: $(cat $i)"
done

then you'll see the output

Code

/sys/bus/usb/drivers/rtl8192cu/module/parameters/rtw_power_mgnt: 0

You might also be able to define a channel and other properties this way.

**nickrob84** · June 6, 2016 at 11:17 PM

If this works then I will contribute £20 straight away

**lrusak** · June 6, 2016 at 11:24 PM Official Post

Quote from nickrob84

If this works then I will contribute £20 straight away

If you need more help just post the output of the commands that you are stuck at.

**nickrob84** · June 7, 2016 at 12:07 AM

LibreELEC-U:~ # lsmod
Module Size Used by
hci_uart 14478 1
btbcm 5379 1 hci_uart
bluetooth 282086 3 btbcm,hci_uart
brcmfmac 172683 0
brcmutil 4893 1 brcmfmac
bcm2835_gpiomem 2652 0
bcm2835_wdt 2777 0
8812au 1500982 0
cfg80211 229385 2 brcmfmac,8812au

which part am I taking from here?

**lrusak** · June 7, 2016 at 12:36 AM Official Post

Quote from nickrob84

which part am I taking from here?

8812au

**nickrob84** · June 7, 2016 at 12:44 AM

Code

LibreELEC-U:~ # modinfo --parameters 8812au
rtw_ips_mode:The default IPS mode (int)
rtw_usb_rxagg_mode: (int)
rtw_qos_opt_enable: (int)
ifname:The default name to allocate for first interface (charp)
if2name:The default name to allocate for second interface (charp)
rtw_rfkfree_enable: (int)
rtw_initmac: (charp)
rtw_channel_plan: (int)
rtw_special_rf_path: (int)
rtw_chip_version: (int)
rtw_rfintfs: (int)
rtw_lbkmode: (int)
rtw_network_mode: (int)
rtw_channel: (int)
rtw_mp_mode: (int)
rtw_wmm_enable: (int)
rtw_vrtl_carrier_sense: (int)
rtw_vcs_type: (int)
rtw_busy_thresh: (int)
rtw_ht_enable: (int)
rtw_bw_mode: (int)
rtw_ampdu_enable: (int)
rtw_rx_stbc: (int)
rtw_ampdu_amsdu: (int)
rtw_vht_enable: (int)
rtw_beamform_cap: (int)
rtw_lowrate_two_xmit: (int)
rtw_rf_config: (int)
rtw_power_mgnt: (int)
rtw_smart_ps: (int)
rtw_low_power: (int)
rtw_wifi_spec: (int)
rtw_antdiv_cfg: (int)
rtw_antdiv_type: (int)
rtw_switch_usb3: (int)
rtw_enusbss: (int)
rtw_hwpdn_mode: (int)
rtw_hwpwrp_detect: (int)
rtw_hw_wps_pbc: (int)
rtw_max_roaming_times:The max roaming times to try (uint)
rtw_mc2u_disable: (int)
rtw_80211d:Enable 802.11d mechanism (int)
rtw_notch_filter:0[img]https://forum.libreelec.tv/images/smilies/biggrin.png[/img]isable, 1:Enable, 2:Enable only for P2P (uint)
rtw_hiq_filter:0:allow all, 1:allow special, 2:deny all (uint)
rtw_adaptivity_en:0:disable, 1:enable (uint)
rtw_adaptivity_mode:0:normal, 1:carrier sense (uint)
rtw_adaptivity_dml:0:disable, 1:enable (uint)
rtw_adaptivity_dc_backoff[img]https://forum.libreelec.tv/images/smilies/biggrin.png[/img]C backoff for Adaptivity (uint)
rtw_adaptivity_th_l2h_ini:TH_L2H_ini for Adaptivity (int)
rtw_adaptivity_th_edcca_hl_diff:TH_EDCCA_HL_diff for Adaptivity (int)
rtw_amplifier_type_2g:BIT3:2G ext-PA, BIT4:2G ext-LNA (uint)
rtw_amplifier_type_5g:BIT6:5G ext-PA, BIT7:5G ext-LNA (uint)
rtw_RFE_type:default init value:64 (uint)
rtw_GLNA_type:default init value:0 (uint)
rtw_TxBBSwing_2G:default init value:0xFF (uint)
rtw_TxBBSwing_5G:default init value:0xFF (uint)
rtw_OffEfuseMask:default open Efuse Mask value:0 (uint)
rtw_FileMaskEfuse:default drv Mask Efuse value:0 (uint)
rtw_kfree:default kfree config value:0 (uint)
rtw_pll_ref_clk_sel:force pll_ref_clk_sel, 0xF:use autoload value (uint)
rtw_fwoffload:for FW offload control (int)
rtw_tx_pwr_lmt_enable:0[img]https://forum.libreelec.tv/images/smilies/biggrin.png[/img]isable, 1:Enable, 2: Depend on efuse (int)
rtw_tx_pwr_by_rate:0[img]https://forum.libreelec.tv/images/smilies/biggrin.png[/img]isable, 1:Enable, 2: Depend on efuse (int)
rtw_target_tx_pwr_2g_a:2.4G target tx power (unit:dBm) of RF path A for eace section, should match the real calibrate power, -1: undefined (array of i
rtw_target_tx_pwr_2g_b:2.4G target tx power (unit:dBm) of RF path B for eace section, should match the real calibrate power, -1: undefined (array of i
rtw_target_tx_pwr_2g_c:2.4G target tx power (unit:dBm) of RF path C for eace section, should match the real calibrate power, -1: undefined (array of i
rtw_target_tx_pwr_2g_d:2.4G target tx power (unit:dBm) of RF path D for eace section, should match the real calibrate power, -1: undefined (array of i
rtw_target_tx_pwr_5g_a:5G target tx power (unit:dBm) of RF path A for each section, should match the real calibrate power, -1: undefined (array of int
rtw_target_tx_pwr_5g_b:5G target tx power (unit:dBm) of RF path B for each section, should match the real calibrate power, -1: undefined (array of int
rtw_target_tx_pwr_5g_c:5G target tx power (unit:dBm) of RF path C for each section, should match the real calibrate power, -1: undefined (array of int
rtw_target_tx_pwr_5g_d:5G target tx power (unit:dBm) of RF path D for each section, should match the real calibrate power, -1: undefined (array of int
rtw_phy_file_path:The path of phy parameter (charp)
rtw_load_phy_file[img]https://forum.libreelec.tv/images/smilies/tongue.png[/img]HY File Bit Map (int)
rtw_decrypt_phy_file:Enable Decrypt PHY File (int)

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It would be too easy to show up as simple as your setup wouldn't it!

**lrusak** · June 7, 2016 at 6:50 AM Official Post

looks like it's the same
try

Code

echo "options 8812au rtw_power_mgnt=0" > /storage/.config/modprobe.d/8812au.conf

then reboot,
then check the output of

Code

cat /sys/bus/usb/drivers/rtl8812au/module/parameters/rtw_power_mgnt

it should show 0

**nickrob84** · June 7, 2016 at 3:34 PM

It accepted the firet command but after the reboot its coming up with:

Code

LibreELEC-U:~ # cat /sys/bus/usb/drivers/rtl8812au/module/parameters/rtw_power_m
gnt
cat: can't open '/sys/bus/usb/drivers/rtl8812au/module/parameters/rtw_power_mgnt': No such file or directory

**lrusak** · June 7, 2016 at 6:00 PM Official Post

try

Code

cat /sys/bus/usb/drivers/rtl8821au/module/parameters/rtw_power_mgnt

**nickrob84** · June 7, 2016 at 8:32 PM

Code

LibreELEC (official) Version: 7.0.1
LibreELEC-U:~ # cat /sys/bus/usb/drivers/rtl8821au/module/parameters/rtw_power_m
gnt
0
LibreEL

could that be it? actually solved?

**lrusak** · June 7, 2016 at 9:05 PM Official Post

Quote from nickrob84

Code

LibreELEC (official) Version: 7.0.1
LibreELEC-U:~ # cat /sys/bus/usb/drivers/rtl8821au/module/parameters/rtw_power_m
gnt
0
LibreEL

could that be it? actually solved?

sure? perhaps power management isn't even enabled on this module by default.

Does it work properly now?

**nickrob84** · June 7, 2016 at 9:09 PM

Well i'm off today and tomorrow and I got a lot of TV catch up to do so if it survives that there willl be a £25 donation referrenced to yourself. Thank you.

**nickrob84** · June 10, 2016 at 6:58 PM

Well after some extensive testing over both boxes, neither have skipped a beat. I mean I haven't exactly stressed tested them but they have both played several hours of 1080p footage (including live) with no buffering or any issues at all over the 5G network. Not even one. Even afer 12 hours idle they were instantly ready to go. I am a man of my word. There will be a £25 donation in reference to Irusak's help on this subject at some point over the weekend when the wife feels like returning my cards!! Thanks again.

**nickrob84** · June 13, 2016 at 6:55 PM

Donation made, thanks again.

FalconX · February 5, 2017 at 6:39 PM

Does everything still works?

I am thinking about to buy a very similiar or the same Edimax dongle with rtl8812au chipset.