Iwlwifi/zh-cn

iwlwifi 是[[Article description::Intel's current wireless chips的无线驱动]]

内核
To make it work some kernel configuration is needed. The driver supports 802.11a/b/g/n/ac (depending on the device), so IEEE 802.11 should be enabled.

IEEE 802.11
Activate at least cfg80211 and mac80211.

iwlwifi brings its own rate control algorithm iwl-agn-rs, see.

Device driver iwlwifi
Use this driver for Intel's current wireless chips. Set it as a module  as shown here. Also the correct DVM or MVM option according to the Module column of the firmware table is needed.

After rebuilding the kernel and rebooting with this kernel, the selected options can be verified as follows:

硬件
Additional firmware for the individual device is needed as listed in this table. It is available in. In case it's not in linux-firmware it might be found in device-specific sys-firmware/iwlxxxx-*ucode packages.

When using built-in configuration
In case the driver is built into the kernel instead as a module, also the firmware needs to be built into the kernel.

In this case replace  with the exact firmware name. Some attention seems to be needed for FW_LOADER_USER_HELPER_FALLBACK.

Optional: savedconfig
The  USE flag could be set for Linux firmware in order to avoid unneeded stuff in.

As for example the Intel® Centrino® Advanced-N 6205 needs iwlwifi-6000g2a-ucode while anything else may be commented out or deleted.

In order to not lose these settings on next firmware update the version number needs to be removed:

modprobe and modinfo
should return nothing:

Most information about the driver module can be obtained by :

lspci
should display  for both   and.

The  identifier will be useful for grepping specific information from dmesg.

dmesg
Check the output of dmesg. Replace  with the identifier from lspci and   with the network interface name.

内核未加载
检查是否加载了正确的内核. 这可以如下完成（取决于IKCONFIG feature）:

固件问题

 * For systems using udev or systemd, it is imperative to configure the kernel to load binary blobs. In this case the wireless card's firmware is the firmware that needs loaded. More information on configuring the kernel in this manner can be found in the following thread on the Gentoo forums: FW_LOADER_USER_HELPER_FALLBACK.


 * Linux firmware for iwlwifi ucode failed with error -2 from http://z-issue.com/wp/

无线网络不工作

 * Intel Corporation Wireless 8260 (rev 3a) can't access the RSA semaphore it is write protected

No internet connection
If you can connect to an access point, but still can't connect to any server or get any connection to the internet it might be worth a try to disable 802.11n and/or enable software encryption. You can pass the  or   and/or   option to the   module. In order to pass the option automatically on module load create the file as follows:

参考

 * Handbook:AMD64/Networking/Wireless
 * wifi
 * Network management using DHCPCD
 * netifrc
 * Troubleshooting
 * Troubleshooting

外部资源

 * http://www.linuxwireless.org/en/users/Drivers/iwlwifi
 * http://git.kernel.org/cgit/linux/kernel/git/firmware/linux-firmware.git
 * https://cateee.net/lkddb/web-lkddb/IWLWIFI.html
 * https://wiki.archlinux.org/index.php/Wireless_network_configuration#iwlwifi