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.\" Copyright (C) 2007 David Zeuthen <david@fubar.dk>
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\fIhald\fP is a daemon that maintains a database of the devices
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connected to the system system in real-time. The daemon connects to
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the \fID-Bus\fP system message bus to provide an API that applications
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can use to discover, monitor and invoke operations on devices. For
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more information about both the big picture and specific API details,
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refer to the \fIHAL spec\fP which can be found in
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.I "/usr/share/doc/hal-0.5.9/spec/hal-spec.html"
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depending on the distribution.
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The following options are supported:
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Specify whether to run in the foreground or the background.
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Enable verbose debug output.
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Print the version of the daemon and exit.
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.SH BUGS AND DEBUGGING
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Please send bug reports to either the distribution or the HAL
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.I "http://lists.freedesktop.org/mailman/listinfo/hal"
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First, to obtain useful debug traces you will need to have
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packages installed. On a Fedora system this is in the
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package and can be installed via the
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Second, shut down the existing
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daemon instance; on a Fedora system this is achieved by
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.I "/etc/init.d/haldaemon stop"
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After having shut down the daemon, you might want to run
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to ensure that all the helper processe of
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are killed too. To start the HAL daemon, use
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.I "/usr/sbin/hald --daemon=no --verbose=yes"
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If the daemon crashes, you can start it under a debugger via
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.I "gdb /usr/sbin/hald"
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.I "run --daemon=no --verbose=yes"
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prompt. To capture a back trace, use the
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command and attach this to the bug report.
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Please also attach the output of \&\fIlshal\fR\|(1) in the bug report
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if possible (it's not possible if the
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daemon crashed). If the nature of the bug has to do with hotplugging,
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attach two outputs of \&\fIlshal\fR\|(1) - one before the device
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hotplug event and one after.
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\&\fIdbus-daemon\fR\|(1),
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\&\fIhal-set-property\fR\|(1),
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\&\fIhal-get-property\fR\|(1),
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\&\fIhal-find-by-property\fR\|(1),
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\&\fIhal-find-by-capability\fR\|(1),
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\&\fIhal-is-caller-locked-out\fR\|(1)
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Written by David Zeuthen <david@fubar.dk> with a lot of help from many