Just installed a clean Kubuntu, only half of my WiFi router works?!?

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SuperWookie68

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Hey everyone,

So I've got a super weird problem. I got Kubuntu all setup on my second SSD drive thanks to Brickwizards help! But now, Linux will NOT connect to my 2.4Ghz WiFi, yet WILL connect to the 5.0Ghz. Which is much fainter and barely able to reach my upstairs computer.

What happens is, when I click on the 2.4Ghz network, it asks for the password, I put it in, it takes like 30 secs of searching or something and then comes back with this small window that has the following at the very top: Wi-Fi password dialog - KDE Daemon. Then below that, it's got a Authenticate and the name of my 2.4Ghz Network. Then below that it says: Proved the password for the wireless network "the name of my 2.4Ghz network" and a blank password box below that. I put in the password again and nothing keeps happening! It will not connect?!

Does anyone know why this is happening and then how to fix it?

Thank you
 


Switch off 5.2GHz support of the router, and try again with the SSID as your password.
 
check your router and make sure you have two different names for 2.4 and 5.0 Ghz - Example; My2.4 and My5.0 - once they are named try to manually connect to one or the other - does your machine support both signals some older machines may not support 5.0
 
GatorsFan said:
check your router and make sure you have two different names for 2.4 and 5.0 Ghz - Example; My2.4 and My5.0 - once they are named try to manually connect to one or the other - does your machine support both signals some older machines may not support 5.0
Click to expand...
Yes, both of my frequencies have different names. One is called network2.4 and the other network5.0 (not the real names). And ALL other computers, tablets, phones can connect and do connect to both networks. Even my PC when I boot into the Windows OS connects to the 2.4Ghz. But not Kubuntu.
 
Is your device detected?
sudo lsusb
Click to expand...
Find the exact driver module that your wireless device is currently using by running the following command:
sudo lshw -C network | grep "driver"
Click to expand...
Once your driver has been found we need to check if it is loaded in your kernel
sudo modprobe modulename
Click to expand...
NOTE: where modulename is the result from grep "driver" example sudo modprobe iwlwifi

After this, run
sudo lsmod | grep "modulename"
Click to expand...
to see if the Linux kernel has loaded your Wi-Fi device correctly.
 
GatorsFan said:
Is your device detected?

Find the exact driver module that your wireless device is currently using by running the following command:

Once your driver has been found we need to check if it is loaded in your kernel

NOTE: where modulename is the result from grep "driver" example sudo modprobe iwlwifi

After this, run

to see if the Linux kernel has loaded your Wi-Fi device correctly.
Click to expand...
Ok, so when I type in the first command you list, it comes back with a list of things I only half know or understand. The first group:
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 05e3:0608 Genesys Logic, Inc. Hub
Bus 001 Device 003: ID 05e3:0608 Genesys Logic, Inc. Hub
Bus 001 Device 004: ID 046d:c548 Logitech, Inc. Logi Bolt Receiver
Bus 001 Device 005: ID 048d:5702 Integrated Technology Express, Inc. RGB LED

Then the second grouping says:
Controller
Bus 001 Device 006: ID 8087:0029 Intel Corp. AX200 Bluetooth
Bus 001 Device 007: ID 3233:8311 Ducky Ducky One 3 TKL RGB
Bus 001 Device 008: ID 05e3:0608 Genesys Logic, Inc. Hub
Bus 001 Device 009: ID 0cf2:a100 ENE Technology, Inc. LianLi-UNI FAN-SL-v1.8

Then the third grouping says:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 005 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 005 Device 002: ID 0bda:5411 Realtek Semiconductor Corp. RTS5411 Hub
Bus 006 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 006 Device 002: ID 0bda:0411 Realtek Semiconductor Corp. Hub
Bus 007 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 008 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub

Only a few of those things do I even know what they might be or are. So Logitech Bolt Receiver is obviously my Logitech MX Master 3S mouse. And then probably the integrated technology express, Inc. RGB LED controller is the controller for the AIO unit and RGB fans attached to it. Then the Ducky One 3 TKL is my keyboard. The Lian Li UNI FAN are my two fans. Then the Realtek is probably my sound card or speakers? But other than that, I have NO IDEA what any of those things are. And I definitely don't know which one is the Router. So to answer your first question, I don't know.

Then when I run the next command, again, it brings back 6 results that are in red and say DRIVER. This is what it shows:
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=6.8.0-41-generic firmware=rtl8125b-2_0.0.2 07/13/20 latency=0 link=no multicast=yes port=twisted pair
configuration: broadcast=yes driver=iwlwifi driverversion=6.8.0-41-generic firmware=77.ad46c98b.0 cc-a0-77.ucode ip=192.168.0.101 latency=0 link=yes multicast=yes wireless=IEEE 802.11
configuration: autonegotiation=on broadcast=yes driver=igc driverversion=6.8.0-41-generic firmware=1045:740 latency=0 link=no multicast=yes port=twisted pair


Then when I type in the command sudo modprobe modulename it comes back with:
FATAL: Module modulename not found in directory /lib/modules/6.8.0-41-generic

Then I don't understand what you mean by this or what to do: NOTE: "where modulename is the result from grep "driver" example sudo modprobe iwlwifi"
 
SuperWookie68 said:
Then I don't understand what you mean by this or what to do: NOTE: "where modulename is the result from grep "driver" example sudo modprobe iwlwifi"
Click to expand...
Where you reply says

Then when I run the next command, again, it brings back 6 results that are in red and say DRIVER. This is what it shows:
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=6.8.0-41-generic firmware=rtl8125b-2_0.0.2 07/13/20 latency=0 link=no multicast=yes port=twisted pair
configuration: broadcast=yes driver=iwlwifi driverversion=6.8.0-41-generic firmware=77.ad46c98b.0 cc-a0-77.ucode ip=192.168.0.101 latency=0 link=yes multicast=yes wireless=IEEE 802.11
configuration: autonegotiation=on broadcast=yes driver=igc driverversion=6.8.0-41-generic firmware=1045:740 latency=0 link=no multicast=yes port=twisted pair

which one of the above is your WiFi - I used Bold/Italic text to highlight the driver so lets say for example it is driver=r8169 from the command I posted above that would be
sudo modprobe modulename
that would be
sudo modprobe r8169 or sudo modprobe iwlwifi or sudo modprobe igc
Click to expand...
my guess it is the iwlwifi the other may be bluetooth and wireless mouse
 
GatorsFan said:
Where you reply says

Then when I run the next command, again, it brings back 6 results that are in red and say DRIVER. This is what it shows:
configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=6.8.0-41-generic firmware=rtl8125b-2_0.0.2 07/13/20 latency=0 link=no multicast=yes port=twisted pair
configuration: broadcast=yes driver=iwlwifi driverversion=6.8.0-41-generic firmware=77.ad46c98b.0 cc-a0-77.ucode ip=192.168.0.101 latency=0 link=yes multicast=yes wireless=IEEE 802.11
configuration: autonegotiation=on broadcast=yes driver=igc driverversion=6.8.0-41-generic firmware=1045:740 latency=0 link=no multicast=yes port=twisted pair

which one of the above is your WiFi - I used Bold/Italic text to highlight the driver so lets say for example it is driver=r8169 from the command I posted above that would be
sudo modprobe modulename
that would be

my guess it is the iwlwifi the other may be bluetooth and wireless mouse
Click to expand...
Hmmm, so when I type any of those 3 into terminal, nothing happens. I tried r8169, iwlwifi and igc
 
SuperWookie68 said:
Then below that, it's got a Authenticate and the name of my 2.4Ghz Network. Then below that it says: Proved the password for the wireless network "the name of my 2.4Ghz network" and a blank password box below that. I put in the password again and nothing keeps happening! It will not connect?!
Click to expand...
Based on google search, this probably is your modem issue.
Maybe temporary disable 5GHz and see if this helps?
 
GatorsFan said:
what is the output
Click to expand...
This is what I get after I run sudo lsmod | grep "iwlwifi":

iwlwifi 598016 1 iwlmvm
cfg80211 1323008 3 iwlmvm,iwlwifi,mac80211
Aristarchus said:
Based on google search, this probably is your modem issue.
Maybe temporary disable 5GHz and see if this helps?
Click to expand...
Hmm, so why does my Windows 10 on the same computer work? And why do all other devices in my house work with 2.4 and 5, but not Linux?
 
Aristarchus said:
maybe I did not mention google? ;)
https://www.reddit.com/r/HomeNetworking/comments/13vjcaa/24ghz_wifi_has_no_internet_but_5ghz_does_but_this
https://community.tp-link.com/en/home/forum/topic/170184

if you search google, there are descriptions of very similar problem. Dual boot may not matter as this is a new machine. Also, as I mentioned:
disable 5hgz and see if it works
finally try different channel

This is just a guess of course.
Click to expand...
Yeah, I know how to use Google search. NOTHING I looked up has helped. That's why I'm here asking for help.

I went into my drive with Windows OS and checked to see if the WiFi card needed to update it's drivers. Nope, they're up to date. I have turned off 5Ghz, and it still doesn't allow me to connect to 2.4Ghz. I was trying to look up how to switch from wpa supplicant to iwd, but it's more confusing then learning a foreign language. I would be hopelessly lost trying to do any of what they say to do to swtich from wpa supplicant to iwd. I have NO idea why this POS OS won't connect to 2.4Ghz. It's maddening.

Oh, also, I can't get into my router! I literally just factory reset it a few days ago, when I installed Linux and couldn't connect to the 2.4Ghz WiFi. So I had to setup everything again. I put in a new password to log in to the router when I type 192.168.0.1 into a browser and guess what it says?!?! hahaha. It says WRONG password. But it's not. I wrote it down in my iPhone notes the second I put it in when I did the factory reset. And the funny thing is, when I put the old password in before I factory reset my router, it ALSO said the password was wrong. So I'm wondering if something is up with our router?! If it's broken or needs some sort of firmware update or something?

This whole thing is a nightmare and makes me hate computers even more than I already do. I NEVER have ANY problems using my Mac computers. Like ever! And 1 week into using Linux and it's non stop problems every single time I'm on using it. It's crazy. I don't know why I'm even bothering anymore with this OS at this point. No idea if it's Ubuntu or just Linux in general? SUPER frustrating. And the thing is, I HATE losing, so I'm not giving up and beating myself up everyday I have time to mess around with it, to try and get it setup like I want and working, haha. I must love punishment or something?
 
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