Ubuntu 14.04无WiFi问题求助：联想Yoga 510 14SK笔记本无WiFi选项

Hey there, fellow Ubuntu newbie! Let’s get that WiFi working on your Yoga 510 14SK step by step—no confusing jargon, just clear, actionable steps. I’ve helped tons of folks with this exact issue, so we’ll take it slow and make sure you follow along easily.

First, we need to know exactly which WiFi card is inside your laptop. Open the Terminal (press Ctrl + Alt + T—this shortcut works every time) and run this command:

lspci -nn | grep -i network

You’ll get a line that looks something like:

02:00.0 Network controller [0280]: Intel Corporation Wireless 7265 [8086:095a]

Copy that whole line (especially the part in brackets like [8086:095a]—that’s the unique ID for your adapter). We’ll need this to pick the right driver.

Ubuntu 14.04 is a bit outdated, so it might not have built-in support for newer WiFi cards. Let’s cover the most common scenarios for your Yoga 510:

If you have an Intel adapter #

If your output from Step 1 mentions Intel, you probably just need to update the firmware. Make sure you’re connected to the internet first (use an Ethernet cable or USB tether from your phone), then run these commands in the terminal:

sudo apt-get update
sudo apt-get install linux-firmware

Once it’s done, reboot your laptop. Check the top-right menu—your WiFi option should be there now!

If you have a Realtek adapter #

Yoga 510s often use Realtek cards like RTL8821AE. For these, we’ll install a custom driver. Run these commands one by one:

sudo apt-get update
sudo apt-get install build-essential git
git clone https://github.com/lwfinger/rtlwifi_new.git
cd rtlwifi_new
make
sudo make install
sudo modprobe rtl8821ae

Wait for each command to finish (the make step might take a minute). Reboot after, and your WiFi should pop up.

Ubuntu 14.04’s default kernel is pretty old, and some new WiFi adapters don’t play nice with it. Let’s check your kernel version first:

uname -r

If it starts with 3.13.0-, we can upgrade to a newer kernel that has better hardware support. Run this command:

sudo apt-get install linux-generic-lts-xenial

This installs the kernel from Ubuntu 16.04, which has way better driver support. Reboot your laptop after installing, then check for WiFi again.

Sometimes the simplest fixes are the easiest! Make sure:

• You haven’t toggled WiFi off with a hardware key—on Yoga 510, this is usually Fn + F5 (look for a WiFi icon on your function keys). Press it once to make sure WiFi is turned on.
• In Ubuntu’s top-right menu (where you see sound and battery icons), click it and confirm "Enable WiFi" is checked.

If none of these steps work, share the exact output from the lspci -nn | grep -i network command you ran earlier, and I’ll help you dig deeper.

内容的提问来源于stack exchange，提问作者fred