Changeset c18f6acb for postlfs/config/firmware.xml

Timestamp:

08/13/2020 08:11:16 PM (4 years ago)

Author:

Xi Ruoyao <xry111@…>

Branches:

10.0, 10.1, 11.0, 11.1, 11.2, 11.3, 12.0, 12.1, kea, ken/TL2024, ken/inkscape-core-mods, ken/tuningfonts, lazarus, lxqt, plabs/newcss, plabs/python-mods, python3.11, qt5new, rahul/power-profiles-daemon, renodr/vulkan-addition, trunk, upgradedb, xry111/intltool, xry111/llvm18, xry111/soup3, xry111/test-20220226, xry111/xf86-video-removal

Children:

39e9093d

Parents:

0335997

Message:

firmware: add a paragraph about regulatory.db

git-svn-id: svn://svn.linuxfromscratch.org/BLFS/trunk/BOOK@23512 af4574ff-66df-0310-9fd7-8a98e5e911e0

File:

• postlfs/config/firmware.xml (modified) (1 diff)

postlfs/config/firmware.xml

@@ -660 +660 @@
 
     <para>
+      Different countries have different regulations on the radio spectrum
+      usage of wireless devices.  You can install a firmware to make the
+      wireless devices obey local spectrum regulations, so you won't be
+      inquired by local authority or find your wireless NIC jamming the
+      frequencies of other devices (for example, remote controllers).
+      The regulatory database firmware can be downloaded from
+      <ulink url = 'https://kernel.org/pub/software/network/wireless-regdb/'/>.
+      To install it, simply extract <filename>regulatory.db</filename> and
+      <filename>regulatory.db.p7s</filename> from the tarball into
+      <filename class="directory">/lib/firmware</filename>.
+      The access point would send a country code to your wireless NIC,
+      and <xref linkend='wpa_supplicant'/> would tell the kernel to load
+      the regulation of this country from
+      <filename>regulatory.db</filename>, and enforce it.
+    </para>
+
+    <para>
       Firmware may also be needed for other devices such as some SCSI
       controllers, bluetooth adaptors, or TV recorders. The same principles