If I disable some lines in "gnome-appearance-properties" source code,
issue is fixed :
In "capplets/common/theme-thumbnail.c" source file :
void
theme_thumbnail_factory_init (int argc, char *argv[])
{
#ifndef __APPLE__
gint child_pid;
#endif
pipe (pipe_to_factory_fd);
pipe (pipe_from_factory_fd);
/* Apple's CoreFoundation classes must not be used from forked
* processes. Since freetype (and thus GTK) uses them, we simply
* disable the thumbnailer on MacOS for now. That means no thumbs
* until the thumbnailing process is rewritten, but at least we won't
* make apps crash. */
#ifndef __APPLE__
/*
child_pid = fork ();
if (child_pid == 0)
{
ThemeThumbnailData data;
GIOChannel *channel;
/* Child */
/*gtk_init (&argc, &argv);
close (pipe_to_factory_fd[1]);
pipe_to_factory_fd[1] = 0;
close (pipe_from_factory_fd[0]);
pipe_from_factory_fd[0] = 0;
data.status = READY_FOR_THEME;
data.type = g_byte_array_new ();
data.control_theme_name = g_byte_array_new ();
data.gtk_color_scheme = g_byte_array_new ();
data.wm_theme_name = g_byte_array_new ();
data.icon_theme_name = g_byte_array_new ();
data.application_font = g_byte_array_new ();
channel = g_io_channel_unix_new (pipe_to_factory_fd[0]);
g_io_channel_set_flags (channel, g_io_channel_get_flags (channel) |
G_IO_FLAG_NONBLOCK, NULL);
g_io_channel_set_encoding (channel, NULL, NULL);
g_io_add_watch (channel, G_IO_IN | G_IO_HUP, message_from_capplet, &data);
g_io_channel_unref (channel);
gtk_main ();
_exit (0);
}
g_assert (child_pid > 0);
/* Parent *//*
close (pipe_to_factory_fd[0]);
close (pipe_from_factory_fd[1]);*/
#endif /* __APPLE__ */
async_data.set = FALSE;
async_data.theme_name = NULL;
async_data.data = g_byte_array_new ();
}
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https://bugs.launchpad.net/bugs/680734
Title:
gnome-appearance-properties spikes the CPU
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