anhsirk21
Posts: 6
Joined: Wed Nov 27, 2019 1:43 am

Raspberry pi 4 with two red x on wifi

Tue Jun 16, 2020 5:34 am

Hello, I'm fairly new to raspberry pi, having a problem with the connection to wifi.
Wifi was working fine before I did a restart.

Pi shows wifi SSID but has two x's red x on top left and on bottom right corner. When I click on my wifi and connect using the password it does nothing.

eth0: Link is down
wlan0: Not associated


I've tried turning it off and on again :lol: sadly no help.
Any help is highly appreciated. :D

Thanks,

James Gryphon
Posts: 2
Joined: Tue Jun 02, 2020 7:18 pm

Re: Raspberry pi 4 with two red x on wifi

Tue Jun 16, 2020 7:00 am

I thought I'd chime in with my own similar complaint, and mention a possible (hopefully temporary) solution.

I've had trouble getting Wi-Fi just about ever since I got the Pi 4 the other day. It would recognize servers were there, but not connect to any of them. At first I leaned on my Android phone's Wi-Fi sharing, but got irritated since the Pi should have its own Wi-Fi, and also since using the phone as a USB dongle took up a port. I tried different things, but eventually got fed up and put in a fresh install of Raspbian/"Raspberry Pi OS". That didn't produce fruit, but at length I eventually set the router for WPA2 only, supposing that might somehow be related to the problem. Whether that was it or not, it seemed to work afterwards...

... until this evening. When the Wi-Fi router went down, the Pi apparently took that as an excuse to fail too. The router did come back up, but it was back to square one with the Pi's connectivity. The GUI neither did anything nor showed any useful information. Neither the official guide or debugging tips were any good, whether ip link set, rfkill, iwconfig or ifconfig.

(In other words, at this point, my symptoms and history are similar to yours, the OP's.)

The way I got it to work again, and the Wi-Fi options to function in the GUI the way they ought to, is very simple:

1) Go to Pi Menu > Preferences > Screen Configuration.
2) In the new window, Configure > Screens > HDMI-1 > Resolution.
3) Select anything below 1600x1200 (I admit a fondness in principle, if not practice, for 1024x768, a childhood favorite.)

Connectivity restored, just like magic. :roll:

Pi 4s were known to jam their own Wi-Fi connections via HDMI some time ago, but I assumed it had been solved, and that it shouldn't impact a resolution as low as 1600x1200 in any case. Apparently, that assumption is wrong. The only way I can get it to function now is by using a lower resolution, which is very annoying considering both that it worked for me before at the higher resolution, and that this isn't supposed to be the norm (whether for Pi users in general, or especially for a resolution as "small" as 1600x1200). But I guess that's the way it goes...
ifconfig wrote:eth0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 169.254.51.142 netmask 255.255.0.0 broadcast 169.254.255.255
inet6 fe80::7944:7a75:9ee:5e4d prefixlen 64 scopeid 0x20<link>
ether dc:a6:32:a4:80:a8 txqueuelen 1000 (Ethernet)
RX packets 62 bytes 9912 (9.6 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 35 bytes 7175 (7.0 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 184 bytes 19114 (18.6 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 184 bytes 19114 (18.6 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

wlan0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.1.75 netmask 255.255.255.0 broadcast 192.168.1.255
inet6 2602:306:335c:92e0:16a4:8f7c:22d:8995 prefixlen 64 scopeid 0x0<global>
inet6 fe80::bae9:3bb2:1bee:e51c prefixlen 64 scopeid 0x20<link>
ether dc:a6:32:a4:80:a9 txqueuelen 1000 (Ethernet)
RX packets 2333 bytes 1200556 (1.1 MiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 2438 bytes 395863 (386.5 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0

pm7399
Posts: 1
Joined: Fri Aug 14, 2020 5:39 am

Re: Raspberry pi 4 with two red x on wifi

Fri Aug 14, 2020 5:43 am

:evil: that didn't work for me :x all the way down to 720x400. Still the same :cry: :cry: :x

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