WiFi issues on RPI 3 poor speed and latency SOLUTION!

Sodan · February 17, 2017 at 12:12 PM

Had issues of some very slow wifi speeds. When connected on Ethernet streaming was superior to wifi.

Turned out to be powersaving on the wlan card that is disturbing.

Disable this by installing iw from libre elec "network tools" plugin package including iw.

Add the following line in /storage/.config/http://autostart.sh/storage/.kodi/…rk-tools/bin/iw wlan0 set power_save off
Check afterwards with iwconfig that it is disabled.

1. Logonto device with ssh
ssh root@<yourip>
password:libreelec
2. issue

Code

iwconfig

and see it wlan0 has Power Management: on
3.

Code

nano /storage/.config/autostart.sh

4. Add this lite to the created file

Code

/storage/.kodi/addons/virtual.network-tools/bin/iw wlan0 set power_save off

5.

Code

reboot

6. SSH in again and issue iwconfig should look something like
eth0 no wireless extensions.
lo no wireless extensions.
wlan0 IEEE 802.11 ESSID:"NET"
Mode:Managed Frequency:2.447 GHz
Access Point: 2C:20:38:CE:8B:15
Bit Rate=65 Mb/s Tx-Power=31 dBm
Retry short limit:7 RTS thr:off
Fragment thr:off Encryption key:off
Power Management:off
Link Quality=54/70 Signal level=-56 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0
Missed beacon:0

Happy WiFi!

**chewitt** · February 17, 2017 at 4:04 PM Official Post

is this with the built-in wifi or a third-party USB device?

reason for asking is that we already disable power management in the kernel for the built-in device.

Sodan · February 19, 2017 at 8:36 AM

This is for the built in. Mine was still on powersaving according to iw after installing fresh 7.95. The device now works much better.

sattotal · February 19, 2017 at 12:26 PM

On my Raspi2 I got

Quote

LibreELEC (community) Version: 8.0.0
LibreELEC:~ # iwconfig
eth0 no wireless extensions.

lo no wireless extensions.

wlan0 IEEE 802.11 ESSID:off/any
Mode:Managed Access Point: Not-Associated
Retry short limit:7 RTS thr:off Fragment thr:off
Encryption key:off
Power Management:on

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powerarmour · February 19, 2017 at 10:40 PM

If you just accept the fact that the built-in WiFi for the RPi3 just isn't exactly the strongest (I mean, have you seen the size of the antenna?), then it's easy to work around it either by another USB WiFi stick, or by making sure you have a plastic case and keeping it as close to the router as possible, and preferably within line of sight.

Sodan · February 20, 2017 at 5:56 PM

Well I can accept that, but after turning powersave off and locking my router not to use other channels than 1-11 it works flawless.

When router selects 12 or higher the Pi cant se it

**chewitt** · February 20, 2017 at 6:00 PM Official Post

Code

echo "options cfg80211 ieee80211_regdom=DE" > /storage/.config/wifi.conf
reboot

If you set wireless regulatory domain to somewhere that supports channels 12/13 they will appear. It defaults to the General world regdomain though, which does not allow them.

Sodan · February 20, 2017 at 10:05 PM

Quote from chewitt
Code
echo "options cfg80211 ieee80211_regdom=DE" > /storage/.config/wifi.conf
reboot
If you set wireless regulatory domain to somewhere that supports channels 12/13 they will appear. It defaults to the General world regdomain though, which does not allow them.

Ok will check. The gui is not handling this i pressume from any regional settings there? I noted this same behaviour with Rasbian Pixel too

**chewitt** · February 20, 2017 at 10:38 PM Official Post

It's something we might add in 9.0 but it will remain a manual process as display settings don't always map to geographic location, e.g. I'm English so want UK formatting on things, but live somewhere else which would require a non-UK regdomain. I believe Raspbian has a config option for wireless in the noobs initial set-up wizard, but again it's a manual process.

kosacik · January 30, 2018 at 8:45 PM

this weekend i was "playing" with few rpi3´s connected to my Mikrotik router.

I used libreelec 8.2.3.

I could not get correct stream from tvheadend, with router behind doors...

I was playing with settings in winbox with wireless radio configuration. Nothing helped, just small improvements. I was sitting next to raspberry with notebook, or phone and it worked fine, but not in my pi´s.

After some time i found these comments... I disabled power management via iwconfig, as described above. It helped much more than other setting i tried to change!

But it was still not reliable... I have some experience with mikrotik routers, but not with streaming HD channells. Then i checked signal, it was -68dbm, so i did not see a reason why it would not work... Then i removed rpi from behind tv, and put it into front... With signal strength around -60dbm it was finally fluent. It is just on the edge, but working.

FeFiFoFum · September 2, 2019 at 9:32 AM

Quote from Sodan

Had issues of some very slow wifi speeds. When connected on Ethernet streaming was superior to wifi.

Turned out to be powersaving on the wlan card that is disturbing.

<<SNIP SNIP SNIP SNIP instructions - thanks for your help SNIP SNIP >>

Sad times......

Firstly chewitt you should be aware, this is broken? (?)

LibreELEC (community): nightly-20190829-bd4ba9f (RPi2.arm)

LibreElecPi:~ # iwconfig

wlan0 IEEE 802.11 ESSID:off/any

Mode:Managed Access Point: Not-Associated Tx-Power=31 dBm

Retry short limit:7 RTS thr:off Fragment thr:off

Encryption key:off

Power Management:on

I am using a very new nightly version, to test some things broken for me.

Power management I have never played with before, and it's defaulting to ON ?

If I run this command it successfully turns off power management.

"/storage/.kodi/addons/virtual.network-tools/bin/iw wlan0 set power_save off"

However, when I add it to autostart.sh it doesn't execute at start ? Anyone know why?

Perhaps this might fix my issue here.

Rebooting Pi, with ETH0 connected, stops Wifi connecting next time, is Wifi reliable?

fabianopinheiro · February 13, 2020 at 9:23 PM

Quote from FeFiFoFum

Sad times......

Firstly chewitt you should be aware, this is broken? (?)

LibreELEC (community): nightly-20190829-bd4ba9f (RPi2.arm)

LibreElecPi:~ # iwconfig

wlan0 IEEE 802.11 ESSID:off/any

Mode:Managed Access Point: Not-Associated Tx-Power=31 dBm

Retry short limit:7 RTS thr:off Fragment thr:off

Encryption key:off

Power Management:on

I am using a very new nightly version, to test some things broken for me.

Power management I have never played with before, and it's defaulting to ON ?

If I run this command it successfully turns off power management.

"/storage/.kodi/addons/virtual.network-tools/bin/iw wlan0 set power_save off"

However, when I add it to autostart.sh it doesn't execute at start ? Anyone know why?

Perhaps this might fix my issue here.

Rebooting Pi, with ETH0 connected, stops Wifi connecting next time, is Wifi reliable?

Display More

I have the same problem.

I added the command in autostart.sh, and the first time Power Management changed it to off. however after turning the rasp off and on, it goes back to on, even with the edited file.

I try to run some videos stored on a NAS, on the same network. the NAS is on a giethernet router and the rpi on the wifi.

Code

LibreELEC (official): 9.2.0 (RPi2.arm)
LibreELEC:~ # iwconfig
eth0      no wireless extensions.

wlan0     IEEE 802.11  ESSID:"Treadstone"
          Mode:Managed  Frequency:2.422 GHz  Access Point: AC:C6:62:D4:DE:DA
          Bit Rate=65 Mb/s   Tx-Power=31 dBm
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:on
          Link Quality=70/70  Signal level=-36 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:2  Invalid misc:0   Missed beacon:0

lo        no wireless extensions.

LibreELEC:~ # nano /storage/.config/autostart.sh
LibreELEC:~ # /storage/.kodi/addons/virtual.network-tools/bin/iw wlan0 set power
_save off
LibreELEC:~ # iwconfig
eth0      no wireless extensions.

wlan0     IEEE 802.11  ESSID:"Treadstone"
          Mode:Managed  Frequency:2.422 GHz  Access Point: AC:C6:62:D4:DE:DA
          Bit Rate=72.2 Mb/s   Tx-Power=31 dBm
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Encryption key:off
          Power Management:off
          Link Quality=70/70  Signal level=-35 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:2  Invalid misc:0   Missed beacon:0

lo        no wireless extensions.

LibreELEC:~ #

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