Plymouth (Česky)

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Úvod

Plymouth is je projekt Fedory, který poskytuje bootovací obrazovku bez nepříjemného poblikávání. Spoléhá na KMS (kernel mode setting) pro nastavení nativního rozlišení displeje jak nejdříve je to možné, poté zobrazí graficky pěkný splash screen trvající až do startu přihlašovacího manažera.

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Instalce

Než začneš používat Plymouth, mušíš povolit KMS. Prosím následuj instrukce pro karty ATI a pro karty Intel. Obě dvě možnosti vyžadují znovusestavení obrazu jádra. Toto budeš muset provést i později v tomto článku takže to prozatím můžeš přeskočit.

Pokud nemáš KMS, budeš potřebovat framebuffer místo něj. Template:Poznámka

Grab Plymouth from the AUR. It is best to use the git version, as this is most up to date and likely to work better.

Instructions on installing packages from the AUR are available here

Configuration

First of all, set a theme for plymouth. Plymouth comes with a selection of themes:

  1. Fade-in: "Simple theme that fades in and out with shimmering stars"
  2. Glow: "Corporate theme with pie chart boot progress followed by a glowing emerging logo"
  3. Solar: "Space theme with violent flaring blue star" and
  4. Spinfinty: "Simple theme that shows a rotating infinity sign in the center of the screen"

Set your desired theme with plymouth-set-default-theme utility, eg:

$ su
# plymouth-set-default-theme spinfinity

Add plymouth to the hooks array in mkinitcpio.conf. It must be added after base udev and autodetect for it to work.

# nano /etc/mkinitcpio.conf

Add plymouth to the hooks array:

HOOKS="base udev autodetect plymouth ..."

Rebuild your kernel image:

# mkinitcpio -p kernel26

Grub now needs configuring to work with plymouth:

# nano /boot/grub/menu.lst

If you have KMS enabled, at the end of your kernel line remove any VGA= statement. If you don't have KMS you will need to use framebuffer and so will need to add a VGA= statement. In either case, add "quiet splash" on the end:

kernel /vmlinuz26 root=/dev/disk/by-uuid/xxxx ro quiet splash

Finally, the plymouth daemon has to be killed towards the end of the boot process. This can be done with a command in rc.local:

# nano /etc/rc.local

and add the line

/bin/plymouth quit --retain-splash

Reboot, and enjoy the eye-candy start-up!

Changing the Theme

As mentioned above, plymouth comes with several themes. If you wish to try a different one, simply issue

# plymouth-set-default-theme themename

Rebuild your kernel image:

# mkinitcpio -p kernel26

And reboot.

Troubleshooting

For some reason on both my computers (a laptop with an ATI graphics card and KMS, and my desktop with an nVidia card and framebuffer) the command to quit plymouth left small black squares around the top of my screen which attached themselves permanently to any window which passed under them. The issue was caused by the --retain-splash option which is required to keep the boot process as seamless as possible. If you are having this problem, the work-around is to kill plymouth after login, when the --retain-splash option is no longer needed.

Note: This requires the use of sudo. Instructions for installing and configuring sudo can be found here

Edit /etc/rc.local again and remove the "/bin/plymouth quit --retain-splash" line.

As yourself, edit xinitrc and add a line to kill plymouth.

Warning: This must be above the line which starts your session (eg exec startxfce4) or your desktop session will not start
$ nano ~/.xinitrc

And add

sudo /bin/plymouth quit &

Note the lack of --retain-splash and the additional & sign on the end. This is required so that the xinitrc script will go on to start your desktop session.

You now need to give yourself permission to kill the plymouth daemon without a password, by editing the sudoers file:

$ su
# EDITOR=nano visudo

And add

yourusername      ALL=(ALL) NOPASSWD: /bin/plymouth

Reboot, and all should be well.

Credits

Thanks to drf for his excellent forum post on which this wiki article is based