I am stuggeling with a strange WIFI problem:
Wired my connection is no problem. But I can’t get a stable wifi-connection. I do get a good connection with my PI very close to my router. But with a distance of only 3-4 meters the connection breaks down very suddenly (web ui not reachable any more). All my other wifi gear works fine in the same net with much larger distances.
My system: Pi 2 Model B, HifiBerry DAC+, Wifi: EDIMAX EW-7811UN, Volumio 2.041, router: FritzBox 7272
(I already changed /etc/modprobe.d/8192cu.conf to options 8192cu rtw_power_mgnt=0 rtw_enusbss=0 rtw_ips_mode=1 with no improvement)
with the RPI close to the router:
wlan0 IEEE 802.11bgn ESSID:“Focometer” Nickname:“WIFI@REALTEK”
Mode:Managed Frequency:2.437 GHz Access Point: 34:81:C4:BE:36:E2
Bit Rate:72.2 Mb/s Sensitivity:0/0
Retry:off RTS thr:off Fragment thr:off
Encryption key:------- Security mode:open
Link Quality=100/100 Signal level=100/100 Noise level=0/100
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
lo no wireless extensions.
eth0 no wireless extensions.
RPI directly next to router: Link Quality = 100/100 Signal level =100/100 noise level =0/100 >>> very good
RPI 2 m away from router: Link Quality=100/100 Signal level=84/100 Noise level=0/100 >>> very good
RPI 3 m away from router: connection lost!
I am a newbie at Linux and so I have no idea how to debug such a problem.
Thankful for any support or hint on this! Greetings.