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How to install WiFi driver in Debian 9?

I download firmware-atheros_20210315-3_all.deb in Download folder from: firmware-atheros_20210315-3_all.deb. Then just enter the Download folder and type at the console: sudo dpkg -i firmware-...
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Can't connect to WPA2/PEAP/MSCHAPv2 enterprise wifi network without a certificate. Fedora 34

I solved the issue by using this command: sudo apt -y --allow-downgrades install wpasupplicant -y --allow-change-held-packages
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bcmwl-kernel-source driver issues on install

Uninstall the bcmwl-kernel-source package by issuing the following command on a terminal: sudo apt-get remove bcmwl-kernel-source Make sure that the firmware-b43-installer and the b43-fwcutter ...
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external wifi suddenly stop working in debian 11

From your comments: Jun 21 17:48:01 debian NetworkManager[426]: <info> [1655813881.3759] audit: op="connection-activate" uuid="21bab4de-4c64-4c22-beec-24fe7ea99192" name=&...
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Why is connection to IPhone Personal Wifi Hotspot so flaky with Ubuntu Linux

Sounds like the laptop might have a more restricted set of WiFi channels available than the iPhone has. Normally the hotspot (iPhone) decides the channel to use. IPhone probably makes the decision ...
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Why is connection to IPhone Personal Wifi Hotspot so flaky with Ubuntu Linux

One possible workaround that seems to work in two different instances on two different computers: Get the list of available networks. If the IPhone hotspot doesn't appear, on the IPhone, Settings->...
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Debian PowerBook G4 WiFi Driver

I know this question is extremely old, but here is a generic solution to get wifi working on any linux distribution with a somewhat modern kernel (tested woth 5.4) on many power macs (tested with a ...
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How can I know the max possible transmit power of my wireless card?

If iwlist is not available your system (like OpenWrt) may provide iwinfo: # iwinfo phy0 txpower 0 dBm ( 1 mW) 1 dBm ( 1 mW) 2 dBm ( 1 mW) 3 dBm ( 1 mW) ... 8 dBm ( 6 mW) 9 ...
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dkms build error when tried to install Wi-Fi drivers

The repository you're trying to build from has not been updated since year 2017, and at that time, 4.11 was the newest kernel version available. There is no guarantee whatsoever that a driver from ...
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Debian Installer: "Failure of key exchange and association" when attempting wifi connection

I had to disable the 5 GHz frequency band in my access point. Although my Intel wireless chip is capable of 5 GHz. SSIDs were found but key exchange failed before the change.
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Kali Linux VirtualBox refuses to connect to Wi-Fi network

Try this command: nmcli networking on
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