<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"> <HTML ><HEAD ><TITLE >Bigger kernel message buffer</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.7"><LINK REL="HOME" TITLE="Via 686 Audio Driver for Linux" HREF="book1.html"><LINK REL="UP" TITLE="Submitting a bug report" HREF="c33.html"><LINK REL="PREVIOUS" TITLE="Driver debug output" HREF="x42.html"><LINK REL="NEXT" TITLE="Known Bugs And Assumptions" HREF="c54.html"></HEAD ><BODY CLASS="SECT1" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >Via 686 Audio Driver for Linux</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="x42.html" ACCESSKEY="P" ><<< Previous</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" >Submitting a bug report</TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" ><A HREF="c54.html" ACCESSKEY="N" >Next >>></A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="SECT1" ><H1 CLASS="SECT1" ><A NAME="BUGREPPRINTK" ></A >Bigger kernel message buffer</H1 ><P > If you wish to increase the size of the buffer displayed by dmesg, then change the <TT CLASS="CONSTANT" >LOG_BUF_LEN</TT > macro at the top of linux/kernel/printk.c, recompile your kernel, and pass the <TT CLASS="CONSTANT" >LOG_BUF_LEN</TT > value to dmesg. Sample command line with <TT CLASS="CONSTANT" >LOG_BUF_LEN</TT > == 32768: </P ><TABLE BORDER="0" BGCOLOR="#E0E0E0" WIDTH="100%" ><TR ><TD ><PRE CLASS="PROGRAMLISTING" > dmesg -s 32768 > /tmp/dmesg-output.txt </PRE ></TD ></TR ></TABLE ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="x42.html" ACCESSKEY="P" ><<< Previous</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="book1.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="c54.html" ACCESSKEY="N" >Next >>></A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >Driver debug output</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="c33.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >Known Bugs And Assumptions</TD ></TR ></TABLE ></DIV ></BODY ></HTML >