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--- products:maker-kit:mind-2-ai-maker-kit:troubleshooting:fix-wifi [2024/12/26 04:04]
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+++ products:maker-kit:mind-2-ai-maker-kit:troubleshooting:fix-wifi [2024/12/30 05:28] (current)
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@@ Line 1: / Line 1: @@
-====== Fix Ubuntu Bluetooth ======
+{{indexmenu_n>5}}
+/*
+====== Fix Ubuntu Wi-Fi ======
+For some reasons current Ubuntu ''22.04/24.04'' LTS with Linux kernel ''6.8'' doesn't support the Intel AX211 Wi-Fi module, so you need to use
+the [[https://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/backport-iwlwifi.git/ | backport-iwlwifi]] driver to make the Wi-Fi work.
+===== Preparation =====
+As you need to download the Wi-Fi driver and firmware from the internet, so **you need a USB ethernet adaptor to access the network**.
+===== Disable the Secure Boot =====
+You need to disable the Secure Boot to update the Wi-Fi drivers, you can follow the steps below to disable the Secure Boot.
+Reboot and press ''DELETE'' to enter BIOS setup menu, and then navigate to ''Security'' -> ''Secure Boot'', and setup to ''Disabled'', press ''F4'' to save and reboot.
+===== Upgrade your system =====
+```shell
+$ sudo apt update
+$ sudo apt full-upgrade -y
+$ sync
+$ sudo reboot
+```
+===== Download and install the Wi-Fi driver =====
+Follow the steps below to download the Wi-Fi driver:
+```shell
+$ sudo apt update
+$ sudo apt install -y git build-essential gcc-12 net-tools
+$ cd ~/Downloads
+$ git clone git://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/backport-iwlwifi.git -b release/core91 --depth=1
+```
+Build and install the Wi-Fi driver:
+```shell
+$ cd ~/Downloads/backport-iwlwifi
+$ make defconfig-iwlwifi-public
+$ make -j10
+$ sudo make install
+$ sync
+```
+===== Update the Wi-Fi firmware =====
+You also need to follow the steps below to update the Wi-Fi firmware:
+```shell
+$ wget https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/plain/iwlwifi-bz-b0-gf-a0-94.ucode -P /tmp
+$ wget https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/plain/iwlwifi-bz-b0-gf-a0.pnvm -P /tmp/
+$ sudo cp /tmp/iwlwifi-bz-b0-gf-a0* /lib/firmware/
+$ sync
+```
+**Then you need to reboot your device to take effect.**
+```shell
+$ sudo reboot
+```
+===== Check Wi-Fi status =====
+After reboot, you can check the kernel log about the Wi-Fi driver.
+```shell
+$ sudo dmesg | grep iw
+[    1.466177] Loading modules backported from iwlwifi
+[    1.466183] iwlwifi-stack-public:release/core91:12629:813fd3c6
+[    1.526533] iwlwifi 0000:00:14.3: enabling device (0000 -> 0002)
+[    1.545348] iwlwifi 0000:00:14.3: Detected crf-id 0x400410, cnv-id 0x1080900 wfpm id 0x80005b20
+[    1.545364] iwlwifi 0000:00:14.3: PCI dev a840/0094, rev=0x461, rfid=0x2010d000
+[    1.545366] iwlwifi 0000:00:14.3: Detected Intel(R) Wi-Fi 7 BE201 320MHz
+[    1.554165] iwlwifi 0000:00:14.3: TLV_FW_FSEQ_VERSION: FSEQ Version: 0.0.4.191
+[    1.554464] iwlwifi 0000:00:14.3: loaded firmware version 94.62990553.0 bz-b0-gf-a0-94.ucode op_mode iwlmvm
+[    2.082992] iwlwifi 0000:00:14.3: loaded PNVM version da3b5cf2
+[    2.101329] iwlwifi 0000:00:14.3: Detected RF GF, rfid=0x2010d000
+[    2.165121] iwlwifi 0000:00:14.3: base HW address: b0:dc:ef:58:db:3f
+[    2.245760] iwlwifi 0000:00:14.3 wlo1: renamed from wlan0
+[    2.643634] iwlwifi 0000:00:14.3: Registered PHC clock: iwlwifi-PTP, with index: 0
+```
+Check Wi-Fi node, if you can find the ''wlo1'' node that means your Wi-Fi works.
+```shell
+$ ifconfig wlo1
+wlo1: flags=4099<UP,BROADCAST,MULTICAST>  mtu 1500
+        ether b0:dc:ef:58:db:3f  txqueuelen 1000  (Ethernet)
+        RX packets 0  bytes 0 (0.0 B)
+        RX errors 0  dropped 0  overruns 0  frame 0
+        TX packets 0  bytes 0 (0.0 B)
+        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
+```
+===== Troubleshooting =====
+If you upgrade the kernel manually then you may need to [[#download-and-install-the-wi-fi-driver | Download and install the Wi-Fi driver
+]] again to make the Wi-Fi work.
+===== In the end =====
+The Linux kernel ''6.11+'' already supports the AX211 Wi-Fi module, so in the future once we get the Ubuntu official kernel update to ''6.11+'', the Wi-Fi will work and no need the steps above.
+*/

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