mirror of https://github.com/mpv-player/mpv
501 lines
17 KiB
XML
501 lines
17 KiB
XML
<?xml version="1.0" encoding="utf-8"?>
|
|
<!-- $Revision$ -->
|
|
<appendix id="bugreports">
|
|
<title>How to report bugs</title>
|
|
|
|
<para>
|
|
Good bug reports are a very valuable contribution to the development of any
|
|
software project. But just like writing good software, good problem reports
|
|
involve some work. Please realize that most developers are extremely busy and
|
|
receive obscene amounts of email. So while your feedback is crucial in improving
|
|
<application>MPlayer</application> and very much appreciated, please understand
|
|
that you have to provide <emphasis role="bold">all</emphasis> of the information
|
|
we request and follow the instructions in this document closely.
|
|
</para>
|
|
|
|
|
|
<!-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -->
|
|
|
|
|
|
<sect1 id="bugreports_security">
|
|
<title>Report security related bugs</title>
|
|
|
|
<para>
|
|
In case you have found an exploitable bug and you would like to do the
|
|
right thing and let us fix it before you disclose it, we would be happy
|
|
to get your security advisory at
|
|
<ulink url="mailto:security@mplayerhq.hu">security@mplayerhq.hu</ulink>.
|
|
Please add [SECURITY] or [ADVISORY] in the subject.
|
|
Be sure that your report contains complete and detailed analysis of the bug.
|
|
Sending a fix is highly appreciated.
|
|
Please don't delay your report to write proof-of-concept exploit, you can
|
|
send that one with another mail.
|
|
</para>
|
|
</sect1>
|
|
|
|
|
|
<!-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -->
|
|
|
|
|
|
<sect1 id="bugreports_fix">
|
|
<title>How to fix bugs</title>
|
|
|
|
<para>
|
|
If you feel have the necessary skills you are invited to have a go at fixing the
|
|
bug yourself. Or maybe you already did that? Please read
|
|
<ulink url="../../tech/patches.txt">this short document</ulink> to find out how
|
|
to get your code included in <application>MPlayer</application>. The people on
|
|
the
|
|
<ulink url="http://lists.mplayerhq.hu/mailman/listinfo/mplayer-dev-eng">MPlayer-dev-eng</ulink>
|
|
mailing list will assist you if you have questions.
|
|
</para>
|
|
</sect1>
|
|
|
|
|
|
<!-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -->
|
|
|
|
|
|
<sect1 id="bugreports_regression_test">
|
|
<title>How to do regression testing using Subversion</title>
|
|
|
|
<para>
|
|
A problem that can happen sometimes is 'it used to work before, now it
|
|
doesn't anymore...'.
|
|
Here is a step by step procedure to try to pinpoint when the problem
|
|
occurred. This is <emphasis role="bold">not</emphasis> for casual users.
|
|
</para>
|
|
|
|
<para>
|
|
First, you'd need to fetch MPlayer's source tree from Subversion.
|
|
Instructions can be found in the
|
|
<ulink url="http://www.mplayerhq.hu/design7/dload.html#svn">Subversion section of the download page</ulink>.
|
|
</para>
|
|
|
|
<para>
|
|
You will have now in the mplayer/ directory an image of the Subversion tree, on
|
|
the client side.
|
|
Now update this image to the date you want:
|
|
<screen>
|
|
cd mplayer/
|
|
svn update -r {"2004-08-23"}
|
|
</screen>
|
|
The date format is YYYY-MM-DD HH:MM:SS.
|
|
Using this date format ensure that you will be able to extract patches
|
|
according to the date at which they were committed, as in the
|
|
<ulink url="http://lists.mplayerhq.hu/pipermail/mplayer-cvslog/">MPlayer-cvslog archive</ulink>.
|
|
</para>
|
|
|
|
<para>
|
|
Now proceed as for a normal update:
|
|
<screen>
|
|
./configure
|
|
make
|
|
</screen>
|
|
</para>
|
|
|
|
<para>
|
|
If any non-programmer reads this, the fastest method to get at the point
|
|
where the problem occurred is to use a binary search — that is,
|
|
search the date of the breakage by repeatedly dividing the search
|
|
interval in half.
|
|
For example, if the problem occurred in 2003, start at mid-year, then ask
|
|
"Is the problem already here?".
|
|
If yes, go back to the first of April; if not, go to the first of October,
|
|
and so on.
|
|
</para>
|
|
|
|
<para>
|
|
If you have lot of free hard disk space (a full compile currently takes
|
|
100 MB, and around 300-350 MB if debugging symbols are enabled), copy the
|
|
oldest known working version before updating it; this will save time if
|
|
you need to go back.
|
|
(It is usually necessary to run 'make distclean' before recompiling an
|
|
earlier version, so if you do not make a backup copy of your original
|
|
source tree, you will have to recompile everything in it when you come
|
|
back to the present.)
|
|
</para>
|
|
|
|
<para>
|
|
When you have found the day where the problem happened, continue the search
|
|
using the mplayer-cvslog archive (sorted by date) and a more precise svn
|
|
update including hour, minute and second:
|
|
<screen>
|
|
svn update -r {"2004-08-23 15:17:25"}
|
|
</screen>
|
|
This will allow you to easily find the exact patch that did it.
|
|
</para>
|
|
|
|
<para>
|
|
If you find the patch that is the cause of the problem, you have almost won;
|
|
report about it to the
|
|
<ulink url="http://bugzilla.mplayerhq.hu/">MPlayer Bugzilla</ulink> or
|
|
subscribe to
|
|
<ulink url="http://lists.mplayerhq.hu/mailman/listinfo/mplayer-users">MPlayer-users</ulink>
|
|
and post it there.
|
|
There is a chance that the author will jump in to suggest a fix.
|
|
You may also look hard at the patch until it is coerced to reveal where
|
|
the bug is :-).
|
|
</para>
|
|
</sect1>
|
|
|
|
|
|
<!-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -->
|
|
|
|
|
|
<sect1 id="bugreports_report">
|
|
<title>How to report bugs</title>
|
|
|
|
<para>
|
|
First of all please try the latest Subversion version of
|
|
<application>MPlayer</application>
|
|
as your bug might already be fixed there. Development moves extremely fast,
|
|
most problems in official releases are reported within days or even hours,
|
|
so please use <emphasis role="bold">only Subversion</emphasis> to report bugs.
|
|
This includes binary packages of <application>MPlayer</application>.
|
|
Subversion instructions can be found at the bottom of
|
|
<ulink url="http://www.mplayerhq.hu/dload.html">this page</ulink> or in
|
|
the README. If this did not help please refer to the list of
|
|
<link linkend="bugs">known bugs</link> and the rest of the documentation.
|
|
If your problem is not known or not solvable by our instructions,
|
|
then please report the bug.
|
|
</para>
|
|
|
|
<para>
|
|
Please do not send bug reports privately to individual developers. This is
|
|
community work and thus there might be several people interested in it.
|
|
Sometimes other users already experienced your troubles and know how to
|
|
circumvent a problem even if it is a bug in <application>MPlayer</application>
|
|
code.
|
|
</para>
|
|
|
|
<para>
|
|
Please describe your problem in as much detail as possible. Do a little
|
|
detective work to narrow down the circumstances under which the problem occurs.
|
|
Does the bug only show up in certain situations? Is it specific to certain
|
|
files or file types? Does it occur with only one codec or is it codec
|
|
independent? Can you reproduce it with all output drivers? The more information
|
|
you provide the better are our chances at fixing your problem. Please do not
|
|
forget to also include the valuable information requested below, we will be
|
|
unable to properly diagnose your problem otherwise.
|
|
</para>
|
|
|
|
<para>
|
|
An excellent and well written guide to asking questions in public forums is
|
|
<ulink url="http://www.catb.org/~esr/faqs/smart-questions.html">How To Ask Questions The Smart Way</ulink>
|
|
by <ulink url="http://www.catb.org/~esr/">Eric S. Raymond</ulink>.
|
|
There is another called
|
|
<ulink url="http://www.chiark.greenend.org.uk/~sgtatham/bugs.html">How to Report Bugs Effectively</ulink>
|
|
by <ulink url="http://www.chiark.greenend.org.uk/~sgtatham/">Simon Tatham</ulink>.
|
|
If you follow these guidelines you should be able to get help. But please
|
|
understand that we all follow the mailing lists voluntarily in our free time. We
|
|
are very busy and cannot guarantee that you will get a solution for your problem
|
|
or even an answer.
|
|
</para>
|
|
</sect1>
|
|
|
|
|
|
<!-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -->
|
|
|
|
|
|
<sect1 id="bugreports_where">
|
|
<title>Where to report bugs</title>
|
|
|
|
<para>
|
|
Subscribe to the MPlayer-users mailing list:
|
|
<ulink url="http://lists.mplayerhq.hu/mailman/listinfo/mplayer-users"/>
|
|
and send your bug report to
|
|
<ulink url="mailto:mplayer-users@mplayerhq.hu"/> where you can discuss it.
|
|
</para>
|
|
|
|
<para>
|
|
If you prefer, you can use our brand-new
|
|
<ulink url="http://bugzilla.mplayerhq.hu/">Bugzilla</ulink> instead.
|
|
</para>
|
|
|
|
<para>
|
|
The language of this list is <emphasis role="bold">English</emphasis>.
|
|
Please follow the standard
|
|
<ulink url="http://www.ietf.org/rfc/rfc1855.txt">Netiquette Guidelines</ulink>
|
|
and <emphasis role="bold">do not send HTML mail</emphasis> to any of our
|
|
mailing lists. You will only get ignored or
|
|
banned. If you do not know what HTML mail is or why it is evil, read this
|
|
<ulink url="http://expita.com/nomime.html">fine document</ulink>.
|
|
It explains all the details and has instructions for turning HTML off. Also
|
|
note that we will not individually CC (carbon-copy) people so it is a good idea
|
|
to subscribe to actually receive your answer.
|
|
</para>
|
|
</sect1>
|
|
|
|
|
|
<!-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -->
|
|
|
|
|
|
<sect1 id="bugreports_what">
|
|
<title>What to report</title>
|
|
|
|
<para>
|
|
You may need to include log, configuration or sample files in your bug report.
|
|
If some of them are quite big then it is better to upload them to our
|
|
<ulink url="ftp://upload.mplayerhq.hu/MPlayer/incoming/">FTP server</ulink> in a
|
|
compressed format (gzip and bzip2 preferred) and include only the path and file
|
|
name in your bug report. Our mailing lists have a message size limit of 80k, if
|
|
you have something bigger you have to compress or upload it.
|
|
</para>
|
|
|
|
<!-- ********** -->
|
|
|
|
<sect2 id="bugreports_system">
|
|
<title>System Information</title>
|
|
|
|
<para>
|
|
<itemizedlist>
|
|
<listitem><para>
|
|
Your Linux distribution or operating system and version e.g.:
|
|
<itemizedlist>
|
|
<listitem><para>Red Hat 7.1</para></listitem>
|
|
<listitem><para>Slackware 7.0 + devel packs from 7.1 ...</para></listitem>
|
|
</itemizedlist>
|
|
</para></listitem>
|
|
<listitem><para>
|
|
kernel version:
|
|
<screen>uname -a</screen>
|
|
</para></listitem>
|
|
<listitem><para>
|
|
libc version:
|
|
<screen>ls -l /lib/libc[.-]*</screen>
|
|
</para></listitem>
|
|
<listitem><para>
|
|
gcc and ld versions:
|
|
<screen>
|
|
gcc -v
|
|
ld -v<!--
|
|
--></screen>
|
|
</para></listitem>
|
|
<listitem><para>
|
|
binutils version:
|
|
<screen>as --version</screen>
|
|
</para></listitem>
|
|
<listitem><para>
|
|
If you have problems with fullscreen mode:
|
|
<itemizedlist>
|
|
<listitem><para>Window manager type and version</para></listitem>
|
|
</itemizedlist>
|
|
</para></listitem>
|
|
<listitem><para>
|
|
If you have problems with XVIDIX:
|
|
<itemizedlist>
|
|
<listitem><para>
|
|
X colour depth:
|
|
<screen>xdpyinfo | grep "depth of root"</screen>
|
|
</para></listitem>
|
|
</itemizedlist>
|
|
</para></listitem>
|
|
<listitem><para>
|
|
If only the GUI is buggy:
|
|
<itemizedlist>
|
|
<listitem><para>GTK version</para></listitem>
|
|
<listitem><para>GLIB version</para></listitem>
|
|
<listitem><para>GUI situation in which the bug occurs</para></listitem>
|
|
</itemizedlist>
|
|
</para></listitem>
|
|
</itemizedlist>
|
|
</para>
|
|
</sect2>
|
|
|
|
<!-- ********** -->
|
|
|
|
<sect2 id="bugreports_hardware">
|
|
<title>Hardware and drivers</title>
|
|
|
|
<para>
|
|
<itemizedlist>
|
|
<listitem><para>
|
|
CPU info (this works on Linux only):
|
|
<screen>cat /proc/cpuinfo</screen>
|
|
</para></listitem>
|
|
<listitem><para>
|
|
Video card manufacturer and model, e.g.:
|
|
<itemizedlist>
|
|
<listitem><para>ASUS V3800U chip: nVidia TNT2 Ultra pro 32MB SDRAM</para></listitem>
|
|
<listitem><para>Matrox G400 DH 32MB SGRAM</para></listitem>
|
|
</itemizedlist>
|
|
</para></listitem>
|
|
<listitem><para>
|
|
Video driver type & version, e.g.:
|
|
<itemizedlist>
|
|
<listitem><para>X built-in driver</para></listitem>
|
|
<listitem><para>nVidia 0.9.623</para></listitem>
|
|
<listitem><para>Utah-GLX CVS 2001-02-17</para></listitem>
|
|
<listitem><para>DRI from X 4.0.3</para></listitem>
|
|
</itemizedlist>
|
|
</para></listitem>
|
|
<listitem><para>
|
|
Sound card type & driver, e.g.:
|
|
<itemizedlist>
|
|
<listitem><para>Creative SBLive! Gold with OSS driver from oss.creative.com</para></listitem>
|
|
<listitem><para>Creative SB16 with kernel OSS drivers</para></listitem>
|
|
<listitem><para>GUS PnP with ALSA OSS emulation</para></listitem>
|
|
</itemizedlist>
|
|
</para></listitem>
|
|
<listitem><para>
|
|
If in doubt include <command>lspci -vv</command> output on Linux systems.
|
|
</para></listitem>
|
|
</itemizedlist>
|
|
</para>
|
|
</sect2>
|
|
|
|
<!-- ********** -->
|
|
|
|
<sect2 id="bugreports_configure">
|
|
<title>Configure problems</title>
|
|
|
|
<para>
|
|
If you get errors while running <command>./configure</command>, or autodetection
|
|
of something fails, read <filename>configure.log</filename>. You may find the
|
|
answer there, for example multiple versions of the same library mixed on your
|
|
system, or you forgot to install the development package (those with the -dev
|
|
suffix). If you think there is a bug, include <filename>configure.log</filename>
|
|
in your bug report.
|
|
</para>
|
|
</sect2>
|
|
|
|
<sect2 id="bugreports_compilation">
|
|
<title>Compilation problems</title>
|
|
|
|
<para>
|
|
Please include these files:
|
|
<itemizedlist>
|
|
<listitem><para>config.h</para></listitem>
|
|
<listitem><para>config.mak</para></listitem>
|
|
</itemizedlist>
|
|
</para>
|
|
</sect2>
|
|
|
|
<!-- ********** -->
|
|
|
|
<sect2 id="bugreports_playback">
|
|
<title>Playback problems</title>
|
|
|
|
<para>
|
|
Please include the output of <application>MPlayer</application> at verbosity
|
|
level 1, but remember to
|
|
<emphasis role="bold">not truncate the output</emphasis> when
|
|
you paste it into your mail. The developers need all of the messages to properly
|
|
diagnose a problem. You can direct the output into a file like this:
|
|
<screen>
|
|
mplayer -v <replaceable>options</replaceable> <replaceable>filename</replaceable> > mplayer.log 2>&1
|
|
</screen>
|
|
</para>
|
|
|
|
<para>
|
|
If your problem is specific to one or more files,
|
|
then please upload the offender(s) to:
|
|
<ulink url="ftp://upload.mplayerhq.hu/MPlayer/incoming/"/>
|
|
</para>
|
|
|
|
<para>
|
|
Also upload a small text file having the same base name as your file with a .txt
|
|
extension. Describe the problem you are having with the particular file there
|
|
and include your email address as well as the output of
|
|
<application>MPlayer</application> at verbosity level 1.
|
|
Usually the first 1-5 MB of a file are enough to reproduce
|
|
the problem, but to be sure we ask you to:
|
|
<screen>
|
|
dd if=<replaceable>yourfile</replaceable> of=<replaceable>smallfile</replaceable> bs=1024k count=5
|
|
</screen>
|
|
It will take the first five megabytes of
|
|
'<emphasis role="bold">your-file</emphasis>' and write it to
|
|
'<emphasis role="bold">small-file</emphasis>'. Then try again on
|
|
this small file and if the bug still shows up your sample is sufficient for us.
|
|
Please <emphasis role="bold">do not ever</emphasis> send such files via mail!
|
|
Upload it, and send only the path/filename of the file on the FTP-server. If the
|
|
file is accessible on the net, then sending the
|
|
<emphasis role="bold">exact</emphasis> URL is sufficient.
|
|
</para>
|
|
</sect2>
|
|
|
|
<!-- ********** -->
|
|
|
|
<sect2 id="bugreports_crash">
|
|
<title>Crashes</title>
|
|
|
|
<para>
|
|
You have to run <application>MPlayer</application> inside <command>gdb</command>
|
|
and send us the complete output or if you have a <filename>core</filename> dump
|
|
of the crash you can extract useful information from the Core file. Here's how:
|
|
</para>
|
|
|
|
|
|
<sect3 id="bugreports_debug">
|
|
<title>How to conserve information about a reproducible crash</title>
|
|
|
|
<para>
|
|
Recompile <application>MPlayer</application> with debugging code enabled:
|
|
<screen>
|
|
./configure --enable-debug=3
|
|
make
|
|
</screen>
|
|
and then run <application>MPlayer</application> within gdb using:
|
|
<screen>gdb ./mplayer</screen>
|
|
You are now within gdb. Type:
|
|
<screen>
|
|
run -v <replaceable>options-to-mplayer</replaceable> <replaceable>filename</replaceable>
|
|
</screen>
|
|
and reproduce your crash. As soon as you did it, gdb will return you to the
|
|
command line prompt where you have to enter
|
|
<screen>
|
|
bt
|
|
disass $pc-32 $pc+32
|
|
info all-registers
|
|
</screen>
|
|
</para>
|
|
</sect3>
|
|
|
|
|
|
<sect3 id="bugreports_core">
|
|
<title>How to extract meaningful information from a core dump</title>
|
|
|
|
<para>
|
|
Create the following command file:
|
|
<screen>
|
|
bt
|
|
disass $pc-32 $pc+32
|
|
info all-registers
|
|
</screen>
|
|
Then simply execute this command:
|
|
<screen>
|
|
gdb mplayer --core=core -batch --command=command_file > mplayer.bug
|
|
</screen>
|
|
</para>
|
|
</sect3>
|
|
</sect2>
|
|
</sect1>
|
|
|
|
|
|
<!-- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -->
|
|
|
|
|
|
<sect1 id="bugreports_advusers">
|
|
<title>I know what I am doing...</title>
|
|
|
|
<para>
|
|
If you created a proper bug report following the steps above and you are
|
|
confident it is a bug in <application>MPlayer</application>, not a compiler
|
|
problem or broken file, you have already read the documentation and you could
|
|
not find a solution, your sound drivers are OK, then you might want to
|
|
subscribe to the MPlayer-advusers list and send your bug report there to get
|
|
a better and faster answer.
|
|
</para>
|
|
|
|
<para>
|
|
Please be advised that if you post newbie questions or questions answered in the
|
|
manual there, you will be ignored or flamed instead of getting an appropriate
|
|
answer. So do not flame us and subscribe to -advusers only if you really know
|
|
what you are doing and feel like being an advanced
|
|
<application>MPlayer</application> user or developer. If you meet these
|
|
criteria it should not be difficult to find out how to subscribe...
|
|
</para>
|
|
</sect1>
|
|
|
|
</appendix>
|