老款2008年Mac安装Ubuntu后WiFi无法上网求助（有线正常）
Hey there, fellow Ubuntu newbie! Old Macs and Linux can be a bit finicky when it comes to WiFi hardware compatibility, but let's work through this together—since you've got wired access, we can use that to get things sorted.
Step 1: Identify Your WiFi Hardware
First, let's figure out exactly what WiFi chip your 2008 Mac has. Open up a terminal (search for "Terminal" in the app launcher) and run this command:
lspci -nn | grep Network
Look for a line mentioning brands like Broadcom (super common in older Macs) and note down the model number (it’ll be in brackets, e.g., [14e4:432b]).
Step 2: Install the Right Driver
Most 2008 Macs use Broadcom chips, so let’s start with the most reliable fix. Run these commands one by one in the terminal (your wired connection will let you download the necessary files):
- Update your package list first:
sudo apt update - Install the Broadcom wireless driver:
sudo apt install bcmwl-kernel-source
If this doesn’t work (some chips need different firmware), uninstall the above package and try this alternative:
sudo apt remove bcmwl-kernel-source sudo apt install firmware-b43-installer
Step 3: Check for Accidental WiFi Blocking
Sometimes WiFi gets soft-blocked without you noticing. Run this command to check:
rfkill list
If you see a line that says Soft blocked: yes, unblock it with:
sudo rfkill unblock all
Step 4: Restart the Network Service
After installing drivers or unblocking, restart the network manager to apply changes:
sudo service network-manager restart
Wait 10-15 seconds, then check if the WiFi icon pops up in the top bar.
If It Still Doesn’t Work...
- Share the exact output of the
lspcicommand you ran earlier—this will help narrow down tweaks for your specific hardware. - Make sure your Ubuntu 16.04 is fully updated (run
sudo apt upgradevia wired connection) since older kernel versions might lack support for your 2008 Mac’s WiFi chip.
Don’t stress—we’ll get that WiFi up and running!
内容的提问来源于stack exchange，提问作者AleG
