Changeset 147b566 for x/installing

Timestamp:

06/02/2022 12:40:58 AM (2 years ago)

Author:

Bruce Dubbs <bdubbs@…>

Branches:

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, xry111/llvm18, xry111/soup3, xry111/xf86-video-removal

Children:

d521cc0

Parents:

c156674

Message:

Explain some Xorg.0.log error/warning messages.

Added explainations for:

(WW) Open ACPI failed (/var/run/acpid.socket)
(WW) VGA arbiter: cannot open kernel arbiter, no multi-card support
(EE) AIGLX error: dlopen of /opt/xorg/lib/dri/i965_dri.so failed
(EE) AIGLX error: unable to load driver i965

File:

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

x/installing/xorg-config.xml

@@ -218 +218 @@
   </sect2>
 
+  <sect2 role="configuration" id="xorg-debug" xreflabel="Debugging Xorg">
+    <title>Debugging Xorg</title>
+
+    <para>
+      When starting xorg, there are a couple of ways to check what any
+      issues you may have.  If the system comes up, you can see what driver
+      is being used by running <command>xdriinfo</command>. If there are
+      issues or you just want to check, look at <filename>Xorg.0.log</filename>.
+    </para>
+
+    <para>
+      The location of <filename>Xorg.0.log</filename> depends on how Xorg is
+      installed.  If the instructions in the book are followed closely and 
+      Xorg is started from the comand line, it wil be located in the 
+      <filename class="directory">$HOME/.local/share/xorg/</filename> directory.
+      If Xorg is started by a display manager (e.g. <xref linkend='lightdm'/>,
+      <xref linkend='lxdm'/>, or <xref linkend='gdm'/>) or if 
+      <filename>$$XORG/PREFIX/libexec/Xorg</filename> has the suid bit set,
+      it will be located in the <filename class="directory">/var/log/</filename>
+      directory.
+    </para>
+
+    <bridgehead renderas="sect3">Xorg.0.log Issues</bridgehead>
+
+    <para>
+      When you look at Xorg.0.log, check for entries like (EE) or (WW).
+      Below are some common entries:
+    </para>
+
+    <bridgehead renderas="sect5">(WW) Open ACPI failed (/var/run/acpid.socket)</bridgehead>
+
+    <para>
+      This warning is becasue <xref linkend='acpid'/> is not installed. If you 
+      are not on a laptop, it can be safely ignored. On a laptop, install 
+      <xref linkend='acpid'/> to enable actions like recognizing when the lid is
+      closed.
+    </para>
+
+    <bridgehead renderas="sect5">(WW) VGA arbiter: cannot open kernel arbiter, no multi-card support</bridgehead>
+
+    <para>
+      This warning is displayed when a regular user starts Xorg.  The library
+      <filename>libpciaccess.so</filename> issues this warning when it
+      tries to open <filename>/dev/vga_arbiter</filename>.  If there is only 
+      one video card in the system, it can safely be ignored. If desired, the
+      permissions of this device can be changed by adding a udev rule and 
+      adding the local user to the video group. As the &root; user:
+    </para>
+
+<screen role="root"><userinput>cat > /etc/udev/rules.d/99-vga-arbiter.rules &lt;&lt; EOF
+# /etc/udev/rules.d/99-vga-arbiter.rules: Set vga_arbiter group/mode
+
+ACTION=="add", KERNEL=="vga_arbiter", GROUP="video" MODE="0660"
+EOF
+
+usermmod -G video &lt;user running xorg&gt;</userinput></screen>
+
+    <bridgehead renderas="sect5">(EE) AIGLX error: dlopen of /opt/xorg/lib/dri/i965_dri.so failed</bridgehead>
+
+  <para>
+    This error, accompanied by (EE) AIGLX error: unable to load driver i965, occurs
+    in some systems with Intel based graphics devices.  It is caused by a mismatch
+    between the current <xref linkend='xorg-server'/> and <xref linkend='mesa'/>. Xorg
+    no longer uses the i965 driver and uses the crocus or isis mesa drivers as
+    indicated by the <command>xdpiinfo</command> command.  It can safely be ignored.
+  </para>
+
+  <para>
+    If desired, this warning can be removed by commenting out lines 
+    330-331 and 337-338 (LogMessage) of 
+    <filename>glx/glxdricommon.c</filename> in the <xref linkend='xorg-server'/>
+    package.
+  </para>
+
+  </sect2>
+
   <sect2 role="configuration" id="hybrid-graphics" xreflabel="Hybrid Graphics">
     <title>Hybrid Graphics</title>