Ubuntu wireless network card problem on Lenovo laptop

There may be two problems:

No wireless network card driver
The wireless network card driver cannot be loaded automatically

Question 1: Wireless network card driver

Baidu's network card driver iwlwifi-9000, such as iwlwifi-9000-pu-b0-jf-b0-34.618819.0.tgz, after decompression, copy the file ".ucode" to the directory /lib/firmware/

Question 2: Automatically load the wireless network card driver

Edit or create a new file /etc/modprobe.d/ideapad_laptop.conf with the following content (only one line of text):

blacklist ideapad_laptop

Save, and then execute the command "sudo /sbin/modprobe -r ideapad_laptop".

After the above two problems are solved, the wireless network card is automatically available when Ubuntu is started, otherwise you have to manually execute the command "sudo /sbin/modprobe -r ideapad_laptop" after each startup.

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