Changeset df5c5e0

Timestamp:

02/21/2021 03:34:50 PM (3 years ago)

Author:

Xi Ruoyao <xry111@…>

Branches:

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:

3df8ea47

Parents:

42326ce

Message:

xorg testing: add sysrq as a precaution if Xorg hangs

git-svn-id: svn://svn.linuxfromscratch.org/BLFS/trunk/BOOK@24254 af4574ff-66df-0310-9fd7-8a98e5e911e0

File:

• x/installing/xorg-config.xml (modified) (1 diff)

x/installing/xorg-config.xml

@@ -39 +39 @@
       </para>
     </note>
+
+    <warning>
+      <para>
+        If Xorg hangs for some reason (for example, lacking a proper
+        input driver), the system may stop responsing to any user input.
+        As a precaution, you can enable a magic <keycap>SysRq</keycap> key
+        before testing Xorg.  As the
+        <systemitem class="username">root</systemitem> user, issue:
+      </para>
+
+<screen><userinput>echo 4 > /proc/sys/kernel/sysrq</userinput></screen>
+
+      <para>
+        Then if Xorg hangs, it's possible to use
+        <keycombo>
+          <keycap>Alt</keycap>
+          <keycap>SysRq</keycap>
+          <keycap>R</keycap>
+        </keycombo>
+        to reset the keyboard mode.  Now it should be able to use
+        <keycombo>
+          <keycap>Ctrl</keycap>
+          <keycap>Alt</keycap>
+          <keycap>Fx</keycap>
+        </keycombo>
+        (replace x with a VT number) to switch to another VT.
+                If it works, login and kill Xorg using command line in the new VT.
+      </para>
+    </warning>
 
     <para>