Why does my system boot so slowly?

Question

I installed Ubuntu 10.10 a few days ago. It is really awesome but the problem is that it takes unusually long time (about 20 minutes) for the login screen to appear after the Ubuntu startup screen. This only happens if I shutdown the computer. There is no problem when I restart the computer.

You can follow the two answers in this question to get us more information. — htorque, Mar 09 '11 at 08:04
Is it any problem with hard disk having some bad sector? Usually disk checking might take a long time. Try reinstalling Ubuntu ,if it still fails may be you have to format and reinstall. — AIB, Mar 09 '11 at 07:52
I suspect improper unmount at shutdown and a long fsck at boot. — shellholic, Mar 09 '11 at 13:02
@shellholic not unless he chose to use ext2 when he installed; ext3 and ext4 ( the default ) are journaled and so they avoid the need for a fsck after an unclean shutdown. — psusi, Mar 09 '11 at 15:27
@psusi: personal note for later. It's obvious, that a computer that boot in 20 minutes and reboot rapidly has an ext3/4 format. — shellholic, Mar 09 '11 at 16:39
Try pressing Escape or Space during the startup graphic; you should be able to actually see the Linux kernel messages as it starts up. — Mei, Jun 03 '11 at 16:19

score 3 · Answer 1 · answered Jun 10 '11 at 08:18

3

The simplest way to solve this problem is with bootchart. It will let you see which process in the boot up sequence is slowing things down.

sudo apt-get install bootchart pybootchartgui

Once it is installed just start the gui at the command line with

pybootchartgui

You have to have at least rebooted once for this to work.

My guess would be that you disks were being check with fsck which happens periodically.

bootchart

answered Jun 10 '11 at 08:18

nelaaro

10,028

that is one groooovy conky you have got going on there! – andybleaden Jul 21 '11 at 09:41

Why does my system boot so slowly?

1 Answers1

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