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201 lines
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<P><B><A NAME=C>Appendix C - How to report bugs</A></B></P>
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<P><B>How to report bugs?</B></P>
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<P>First of all please try the latest CVS version of mplayer as your bug might
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already be fixed there. CVS instructions can be found at the bottom of
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<A HREF="http://www.mplayerhq.hu/homepage/dload.html">this page</A>.</P>
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<P>If this did not help please refer to <A HREF="documentation.html#D">Appendix D</A>
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and the rest of the documentation. If your problem is not known or not solvable by
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our instructions, then please report the bug.</P>
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<P><B>Where to report bugs?</B></P>
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<P>Subscribe to the mplayer-users mailing list:<BR>
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<A HREF="http://mplayerhq.hu/mailman/listinfo/mplayer-users">http://mplayerhq.hu/mailman/listinfo/mplayer-users</A><BR>
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and send your bug report to:<BR>
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<A HREF="mailto:mplayer-users@mplayerhq.hu">mplayer-users@mplayerhq.hu</A><BR>
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Please note that we will not individually CC (carbon-copy) people so it is a good
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idea to subscribe to actually receive your answer.</P>
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<P>Please do not send bug reports privately to individual developers. This is
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community work and thus there might be several people interested in it.
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Also sometimes other users already experienced your troubles and have a
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solution in hand how to circumvent a problem even if it is a bug in mplayer
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code.<BR>
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The language of this list is <strong>English</strong>.</P>
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<P>Please describe your problem as detailed as possible with examples etc.
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and do not forget to include this valuable information:</P>
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<P><B>What to report?</B></P>
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<P><B><I>System Information</I></B></P>
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<UL>
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<LI>Your Linux distribution or operating system e.g.:
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<UL>
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<LI>Red Hat 7.1
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<LI>Slackware 7.0 + devel packs from 7.1 ...
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</UL>
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<LI>kernel version:<BR>
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<CODE>uname -a</CODE>
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<LI>libc version:<BR>
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<CODE>ls -l /lib/libc[.-]*</CODE>
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<LI>X version:<BR>
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<CODE>X -version</CODE>
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<LI>gcc and ld versions:<BR>
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<CODE>gcc -v<BR>
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ld -v</CODE>
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<LI>binutils version:<BR>
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<CODE>as --version</CODE>
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<LI>if only the GUI is buggy :
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<UL>
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<LI>GTK version</LI>
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<LI>GLIB version</LI>
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<LI>libpng version</LI>
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<LI>GUI situation in which the bug occurs</LI>
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</UL>
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</LI>
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</UL>
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<P><B><I>Hardware & drivers</I></B></P>
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<UL>
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<LI>CPU info (this works on Linux only):<BR>
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<CODE>cat /proc/cpuinfo</CODE>
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<LI>Video card manufacturer and model, e.g.:<BR>
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<UL>
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<LI>ASUS V3800U chip: nVidia TNT2 Ultra pro 32MB SDRAM
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<LI>Matrox G400 DH 32MB SGRAM
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</UL>
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<LI>Video driver type & version, e.g.:<BR>
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<UL>
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<LI>X built-in driver
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<LI>nVidia 0.9.623
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<LI>Utah-GLX CVS 2001-02-17
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<LI>DRI from X 4.0.3
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</UL>
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<LI>Sound card type & driver, e.g.:<BR>
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<UL>
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<LI>Creative SBLive! Gold with OSS driver from oss.creative.com
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<LI>Creative SB16 with kernel OSS drivers
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<LI>GUS PnP with ALSA OSS emulation
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</UL>
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<LI>if in doubt include <CODE>lspci -vv</CODE> output on Linux systems
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</UL>
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<P><B>For compilation problems/errors</B></P>
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<P><B><I>Please include these files:</I></B></P>
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<UL><LI>configure.log
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<LI>config.h
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<LI>config.mak
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<LI>libvo/config.mak
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</UL>
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<P><B>For playback problems</B></P>
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<P><B><I>Please include the output of mplayer at verbosity level 1</I></B></P>
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<P><CODE> mplayer -v [options] filename &> mplayer.log</CODE></P>
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<P>If your problem is specific to one or more files, then please upload the
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offender(s) to:</P>
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<P> <A HREF="ftp://mplayerhq.hu/MPlayer/incoming/">ftp://mplayerhq.hu/MPlayer/incoming/</A></P>
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<P>Also upload a small text file having the same base name as your file
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with a .txt extension. Describe the problem you are having with the
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particular file there and include your email address as well as the output
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of mplayer at verbosity level 1.<BR>
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Usually the first 1-5 MB of a file are enough to reproduce the problem,
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but to be sure we ask you to:
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<P><CODE> dd if=yourfile of=smallfile bs=1024k count=5</CODE></P>
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<P>It will take the first five megabytes of <STRONG>'your-file'</STRONG> and
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write it to <STRONG>'small-file'</STRONG>.<BR>
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Then try again on this small file and if the bug still shows up
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your sample is sufficient for us.<BR>
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Please <STRONG>do not ever</STRONG> send such files via mail! Upload it,
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and send only the path/filename of the file on the FTP-server.<BR>
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If the file is accessible on the net, then sending the
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<STRONG>exact</STRONG> URL is sufficient.</P>
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<P><B><I>For crashes</I></B></P>
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<P><I>If you have a core dump of the crash continue reading the next paragraph, otherwise skip it.</I></P>
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<P><B><I>How to extract meaningful information from a core dump</I></B></P>
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<P>Please create following command file:</P>
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<P><CODE>disass $eip-32 $eip+32<BR>
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printf "eax=%08lX\n",$eax<BR>
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printf "ebx=%08lX\n",$ebx<BR>
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printf "ecx=%08lX\n",$ecx<BR>
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printf "edx=%08lX\n",$edx<BR>
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printf "esp=%08lX\n",$esp<BR>
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printf "ebp=%08lX\n",$ebp<BR>
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printf "edi=%08lX\n",$edi<BR>
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printf "esi=%08lX\n",$esi<BR>
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</CODE></P>
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<P>Then simply execute the following on your command line:</P>
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<P> <CODE>gdb mplayer --core=core -batch --command=command_file > mplayer.bug</CODE></P>
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<P><B><I>How to conserve information about a reproducible crash</I></B></P>
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<P>Re-compile mplayer with debugging code enabled:</P>
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<P><CODE> ./configure --enable-debug=3<BR>
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make</CODE></P>
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and then run mplayer within gdb using:
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<P><CODE> gdb mplayer</CODE></P>
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<P>You are now within gdb. Type:</P>
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<P><CODE> run -v [options-to-mplayer] filename</code></P>
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and reproduce your crash. As soon as you did it, gdb will
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return you to the command line prompt where you have to enter
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<P><CODE> bt<BR>
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disass $eip-32 $eip+32</CODE></P>
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and send the complete output to us.
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<P><B>General note</B></P>
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<P>If something is quite big (logs for instance) then it is better to upload
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it to the FTP-server in a compressed format (gzip and bzip preferred) and
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include only the path and filename in your bug report.</P>
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<P><B>I know what I am doing...</B></P>
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<P>If you created a proper bug report following the steps above and you are
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confident it is a bug in mplayer, not a compiler problem or broken file,
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you have already read the documentation and you could not find a solution,
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your sound drivers are OK, then you might want to subscribe to the
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mplayer-advusers list and send your bug report there to get a better and
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faster answer.<BR><BR>
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Please be advised that if you post newbie questions or questions answered
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in the manual there, you will be ignored or flamed instead of getting an
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appropriate answer.<BR>
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So do not flame us and subscribe to -advusers only if you really know
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what you are doing and feel like being an advanced mplayer user or
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developer. If you meet these criteria it should not be difficult to find
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out how to subscribe...
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</P>
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