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167 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, try the latest CVS, maybe your bug is already fixed. CVS download
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instructions (easy) can be found on our homepage.</P>
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<P>If it didn't help: read <A HREF="documentation.html#D">Appendix D</A>, and other docs. If your problem isn't
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known or isn't solved by our instructions, then report the bug:</P>
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<P><B>Where?</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 bugreport to:<BR>
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<A HREF="mailto:mplayer-users@mplayerhq.hu">mplayer-users@mplayerhq.hu</A><BR>
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We won't CC: so please subscribe!!!</P>
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<P>Don't send bugreports private, directly to author's address!!!
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We are working together on code, so everyone is interested in it.
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BTW many times other users know the solution (system config probs,
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bad drivers etc), even when we think it's a bug in our code.
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The language of this list is ENGLISH!</P>
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<P>Please describe your problem in details, examples etc, and don't
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forget to include these:</P>
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<P><B>What?</B></P>
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<P><B><I>1. The system info what we always want:</I></B></P>
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<UL>
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<LI>linux distribution<BR>
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examples:<UL>
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<LI>RedHat 7.1
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<LI>Slackware 7.0 + devel packs from 7.1 ...</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 version:<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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</UL>
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<P><B><I>2. Hardware & drivers:</I></B></P>
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<UL>
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<LI>CPU info:<BR>
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<CODE>cat /proc/cpuinfo</CODE>
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<LI>video card manufacturer and model<BR>
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examples:<BR><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</UL>
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<LI>video driver type&version<BR>
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examples:<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</UL>
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<LI>sound card type & driver<BR>
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examples:<BR><UL>
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<LI>Creative SBLive! Gold with OSS driver from oss.creative.com
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<LI>Creative SB16 with OSS drivers of kernel
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<LI>GUS PnP with ALSA OSS emulation</UL>
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<LI>if you are unsure, attach output of lspci -v
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</UL>
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<P><B>For compiling problems/errors</B></P>
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<P><B><I>3. 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>3. Output of mplayer at verbose level 1 (-v)</I></B></P>
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<P><CODE> mplayer -v [options] filename &> mplayer.log</CODE></P>
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<P><B><I>4. If the problem is specific to one or a few files,
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then please upload that file to:</I></B></P>
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<P><CODE> ftp://mplayerhq.hu/MPlayer/incoming/</CODE></P>
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Also upload a small .txt file with the same name as your file,
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describing the problem!<BR>
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Usually first 1-5 MB of the file is enough to reproduce
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the problem, but first you should try it:
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<P><CODE> dd if=yourfile of=smallfile bs=1k count=1024</CODE></P>
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(it will cut first 1MB of 'yourfile' and save to 'smallfile')
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Then try again on this small file, and if bug still exists
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then it's enough to upload this small file.<BR>
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NEVER send such files via mail! Upload it, and send only
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the path/filename of the file on the FTP.
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If the file is accessible on the net, then sending the
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_exact_ URL is enough!
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<P><B><I>5. For crashes (segfault, SIGILL, signal 4 etc):</I></B></P>
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<P><I>If you have coredump of the crash, see 5.a, else see 5.b:</I></P>
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<P><B><I>5.a: Please print us coredump (if it was created).</I></B></P>
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<P>Howto:
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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 following 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>5.b.: run MPlayer in gdb:</I></B></P>
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<P>Re-compile mplayer with debugging code enabled:<BR>
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./configure --enable-debug<BR>
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make
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</P>
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<P>[at root/user shell prompt:]<BR>
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<CODE># gdb mplayer</CODE><BR>
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[at gdb prompt:]<BR>
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<CODE>> run -v [options-to-mplayer] filename</CODE><BR>
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... (wait until it will crash)<BR>
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<CODE>> bt</CODE><BR>
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<CODE>> disass $eip-32 $eip+32</CODE><BR>
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Send us the full output of the above things!
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</P>
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<P><B>In general:</B></P>
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<P>If something is big (logs etc) then it's better to upload to the ftp
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(gzipped), and include only path/filename in the bugreport!</P>
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<P><B>I know what am I doing...</B></P>
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<P>If you created a proper bugreport following the above steps, and you are
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sure it's mplayer bug, not compiler's problem or broken file, you've already
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readed through docs and you didn't find the solution, your sound drivers are ok,
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then you may want to subscribe to the mplayer-advusers list and send your
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bugreport there to get better and faster answer. But BE WARNED: if you post
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newbie or rtfm-type questions there, you'll be immediatelly banned, instead or
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getting answered!!! So don't flame us, subscribe -advusers only if you really
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know what are you doing and you feel you as advanced mplayer user or developer.
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(and about how to subscribe: find it out! if you're really an advanced user,
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it shouldn't be a problem for you...)
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</P>
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