Bug#470901: xserver-xorg-core: Uses sync dbus calls through the libhal API

[Julien Cristau <jcristau@debian.org>]

(for some reason i never saw this report..)

On Fri, Mar 14, 2008 at 13:01:42 +0100, Sjoerd Simons wrote:

>  I just had a quite nasty experience. When running hal in verbose mode
>  in a x terminal it locks up my X, untill i kill hald from another
>  machine..  Stracing of X shows that it was blocking on dbus calls.
>  What seems to happen is that hal's stdout/stderr buffers are filled
>  up because X is busy with other stuff, causing hal to block, which in
>  turn causes X to block when it calls out to hal the next time :(
> 
>  A quick look in the xorg-server code shows it's using libhal_*
>  functions.  Almost all of these result in synchronous dbus calls
>  (thus they block untill a reply is received). Which make them
>  unsuitable for something as critical as the X server.
> 
>  From my point of view it might be best to turn the input hotplugging
>  code in unstable for now as it's not actually used at this point
>  anyway...
> 
>From my point of view it wouldn't be a good solution :)
(we use the input hotplugging code to load the synaptics driver on
laptops with touchpads, if nothing else, and will use it for most
everything post-lenny)

Is there any better way to fix this, or should we just consider it a
wontfix thing?

Cheers,
Julien