Improving bootup speed of Ubuntu 11.04

Tutorial on how to speed up the start up time of Ubuntu 11.04 Natty Narwhal, and it may also work for older versions of Ubuntu.

Biggest improvement is on removing Gwibber, which on my system knocked about 5 seconds off the bootup time.
Other packages to remove include Braille Display, Printer Drivers, and Unneeded Fonts.

My boot up time for Ubuntu 11.04 is 15 seconds (on par with 10.04 and faster than 10.10). The changes I show in this video knocked about 7 seconds off my boot up time.

Command Lines:
sudo apt-get purge brltty brltty-x11 foo2zjs gwibber gwibber-service hplip hplip-cups hplip-data hpijs min12xxw pxljr splix ttf-indic-fonts-core ttf-kacst-one ttf-khmeros-core ttf-lao ttf-punjabi-fonts ttf-unfonts-core

Enable Multicore Booting:
sudo gedit /etc/init.d/rc
CONCURRENCY=none
Change to CONCURRENCY=shell

Disable unneeded services
(Im no expert on this section, try Googling for more info)
sudo apt-get install sysv-rc-conf
sudo sysv-rc-conf

These are all quick simple improvements to get your system running faster, if you want to go even quicker then its worth building up from a Minimal ISO and restricting the number of packages that get installed. To be honest the gains in speed will be far outweighed by the time taken on initial setup.

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[BHTX84]

Removing Gwibber in 11.10 removes ubuntu-desktop!

Not sure about the "multicore booting", as rc now shows CONCURRENCY=makefile. Regardless, it made no difference for me. Again, this is 11.10, not 11.04.

[quidsup]

@BHTX84 Don't do any of these tricks in Ubuntu 11.10 it makes the bootup time slower.

64bit version of Ubuntu 11.10 comes pre-setup with multicore booting.

I haven't managed to get any improvement in bootup time by removing unnecessary packages, in-fact it seems to make things worse.

[Bane9900]

you may want to try editing /etc/initramfs-tools/initramfs­.conf and changing the MODULES line from most to dep and run update-initramfs -u a couple times. This saved 3 seconds for me on an SSD. might be worth a shot.

[quidsup]

@Bane9900 Thanks for the tip. Not sure its made a huge difference with my SSD, although shutdown seems a bit quicker.

[jeremyloveridge]

I did this but didn't realize that the username wouldn't show up on the top right anymore... How do I get it back???

[quidsup]

@jeremyloveridge reinstall "gwibber" and I think "indicator-me"

[Kritt3rzz]

@TigerOscar78 its a default wallpaper

[TigerOscar78]

I love your wallpaper where did you get it?

[sjc1207]

This worked well with 11.10 as well. Thanks!

[quidsup]

@xprocharged1 Good trick, but I wonder with compiling the kernel (and any other apps) that the speed improvement is really worth it compared to the time taken in compiling?