- Add section "Boot Time Splash Screens"
Submitted by: Joseph J. Barbish <fbsd1 (at) a1poweruser (dot) com>, martinko <gamato (at) users (dot) sf (dot) net> (fixes) Reviewed by: manolis, trhodes
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Gabor Pali
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2020-12-08 03:00:23 +00:00
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1 changed files with 181 additions and 0 deletions
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@ -507,6 +507,187 @@ boot:</screen>
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</listitem>
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</itemizedlist>
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</sect3>
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<sect3 id="boot-splash">
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<sect3info>
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<authorgroup>
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<author>
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<firstname>Joseph J.</firstname>
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<surname>Barbish</surname>
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<contrib>Contributed by </contrib>
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</author>
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</authorgroup>
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</sect3info>
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<title>Boot Time Splash Screens</title>
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<para>The splash screen creates a more visually appealing boot
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screen compared to the original boot messages. This screen
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will be displayed until a console login prompt or an X display
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manager offers a login prompt.</para>
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<para>There are two basic environments available in &os;. The
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first is the default legacy virtual console command line
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environment. After the system finishes booting, a console
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login prompt is presented. The second environment is the X11
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Desktop graphical environment. After <link
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linkend="x-install">X11</link> and one of the graphical <link
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linkend="x11-wm">desktop environments</link>, such as
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<application>GNOME</application>,
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<application>KDE</application>, or
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<application>XFce</application> are installed, the X11 desktop
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can be launched by using the <command>startx</command>
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command.</para>
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<para>Some users prefer the X11 graphical login screen over the
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traditional text based login prompt. Display managers
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like <application>XDM</application> for
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&xorg;, <application>gdm</application> for
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<application>GNOME</application>, and
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<application>kdm</application> for
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<application>KDE</application> (and any other from the Ports
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Collection) basically provide a graphical login screen in
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place of the console login prompt. After a successful login,
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they present the user with a graphical desktop.</para>
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<para>In the command line environment, the splash screen would
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hide all the boot probe messages and task startup messages
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before displaying the login prompt. In X11 environment, the
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users would get a visually clearer system start up experience
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resembling something closer to what a (µsoft; &windows;
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or non-unix type system) user would experience.</para>
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<sect4 id="boot-splash-function">
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<title>Splash Screen Function</title>
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<para>The splash screen function only supports 256-color
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bitmap (<filename>.bmp</filename>) or ZSoft
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<acronym>PCX</acronym> (<filename>.pcx</filename>) files.
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In addition, the splash image files must have a resolution
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of 320 by 200 pixels or less to work on standard VGA
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adapters.</para>
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<para>To use larger images, up to the maximum resolution of
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1024 by 768 pixels, activate the <acronym>VESA</acronym>
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support included in &os;. This can be enabled by loading
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the <acronym>VESA</acronym> module during system boot, or
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adding a <literal>VESA</literal> kernel configuration option
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and building a custom kernel (see <xref
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linkend="kernelconfig">). The <acronym>VESA</acronym>
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support gives users the ability to display a splash screen
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image that fills the whole display screen.
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<para>While the splash screen is being displayed during the
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booting process, it can be turned off any time by hitting
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any key on the keyboard.</para>
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<para>The splash screen also defaults to being a screen saver
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outside of X11. After a time period of non-use the screen
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will change to the splash screen and cycle through steps of
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changing intensity of the image, from bright to a very dark
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and over again. This default splash screen (screen saver)
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behavior could be overridden by adding a
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<literal>saver=</literal> line to
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<filename>/etc/rc.conf</filename>. Option
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<literal>saver=</literal> has several built-in screen savers
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to choose from, the full list can be found in the
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&man.splash.4; manual page. The default screen saver is
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called <quote>warp</quote>. Note that the
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<literal>saver=</literal> option specified in
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<filename>/etc/rc.conf</filename> only applies to virtual
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consoles. It has no effect on X11 display managers.</para>
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<para>A few boot loader messages, including the boot options
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menu and a timed wait count down prompt are displayed at
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boot time, even when the splash screen is enabled.</para>
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<para>Sample splash screen files can be downloaded from the
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gallery at <ulink
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url="http://www.baldwin.cx/splash/"></ulink>. By
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installing the <filename
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role="package">sysutils/bsd-splash-changer</filename>
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port, splash images can be chosen from a collection randomly
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at each boot.</para>
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</sect4>
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<sect4 id="boot-splash-enable">
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<title>Enabling the Splash Screen Function</title>
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<para>The splash screen (<filename>.bmp</filename>) or
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(<filename>.pcx</filename>) file has to be placed in the
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<filename
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class="directory">/boot</filename> directory.</para>
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<para>For default boot display resolution (256-color, 320 by
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200 pixels, or less), edit
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<filename>/boot/loader.conf</filename>, so it contains the
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following:</para>
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<programlisting>splash_bmp_load="YES"
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bitmap_load="YES"
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bitmap_name="<replaceable>/boot/splash.bmp</replaceable>"</programlisting>
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<para>For larger video resolutions up to the maximum of 1024
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by 768 pixels, edit <filename>/boot/loader.conf</filename>,
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so it contains the following:</para>
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<programlisting>vesa_load="YES"
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splash_bmp_load="YES"
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bitmap_load="YES"
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bitmap_name="<replaceable>/boot/splash.bmp</replaceable>"</programlisting>
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<para>The above assumes that
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<filename><replaceable>/boot/splash.bmp</replaceable></filename>
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is used for splash screen. When a <acronym>PCX</acronym>
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file is desired, use the following statements, plus the
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<literal>vesa_load="YES"</literal> line depending on the
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resolution.</para>
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<programlisting>splash_pcx_load="YES"
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bitmap_load="YES"
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bitmap_name="<replaceable>/boot/splash.pcx</replaceable>"</programlisting>
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<para>The file name is not restricted to <quote>splash</quote>
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as shown in the above example. It can be anything as long
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as it has type of <acronym>BMP</acronym> or
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<acronym>PCX</acronym>, such as
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<filename><replaceable>splash_640x400</replaceable>.bmp</filename>
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or
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<filename><replaceable>blue_wave</replaceable>.pcx</filename>.</para>
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<para>Some other interesting <filename>loader.conf</filename>
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options:</para>
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<variablelist>
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<varlistentry>
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<term><literal>beastie_disable="YES"</literal></term>
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<listitem>
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<para>This will stop the boot options menu from being
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displayed, but the timed wait count down prompt will
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still be present. Even with the display of the boot
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options menu disabled, entering an option selection at
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the timed wait count down prompt will enact the
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corresponding boot option.</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term><literal>loader_logo="beastie"</literal></term>
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<listitem>
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<para>This will replace the default words
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<quote>&os;</quote>, which are displayed to the right
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of the boot options menu with the colored beastie logo
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like releases in the past had.</para>
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</listitem>
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</varlistentry>
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</variablelist>
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<para>For more information, please see the &man.splash.4;,
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&man.loader.conf.5;, and &man.vga.4; manual pages.</para>
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</sect4>
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</sect3>
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</sect2>
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</sect1>
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