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How can I troubleshoot the issue?

Problems range through:

  1. Poor connection speeds
  2. Dropped connections
  3. Failure to connect
  4. Seemingly random disconnects
  5. Poor range
  6. Card is stuck in hardware disabled state

1 Answer 1

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Note that in all cases iwlagn should be replaced with your wireless module name. In my case iwlwifi.

Options for connection speed

The coex option:

Notes:
It would be good form to change the customintel6300N.conf part to the name of your driver or card so you can easily find out where you tweaked the module parameters. lsmod | grep iwl should tell you what driver/module you're using. In my case it's iwlwifi

As root add a file in modprobe.d that makes the setting persist, like this:

  1. As root with your text editor of choice make a new file:

    /etc/modprobe.d/customintel6300N.conf
    
  2. In that file add a line like:

    options iwlagn bt_coex_active=0  
    
  3. Save and reboot.

Disabling hardwarecrypto

Some users have reported that N support gets much more reliable using software you might try

options iwlagn hwcrypto=0

instead of the coex option.

Disabling N support As was already suggested by Jorge Castro:

options iwlagn 11n_disable=0

Recovering from stuck in hardware disabled state

  1. Remove all power sources(cables/batteries).
  2. Act like you're powering on the device(press and hold the power button or power cycle several times even though it has no power).
  3. Reconnect all power sources and boot.

The goal of that set is to remove power from wherever the wireless card stores the hardware disabled state and defaults to 'enabled' on the next boot.

Related questions:
How do I get an Intel 6300 N working

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