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I have setup my laptop with Ubuntu 11.04. I bought a fresh SSD, and expected the startup time at <30 seconds but it takes about 3-5 minutes.

I have taken a snapshop using bootchart but I don't know exactly how to read it:

enter image description here

For me, it looks like modprobe is running in some sort of timeout - but where can I check this?

The boot from dmesg:

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i was very happy to see my own post about this 1 year later since i reinstalled ubuntu and then i searched for "slow startup time ubuntu modprobe" i did not remember this specific fix horray for superuser! – Andreas Petersson Sep 9 '12 at 19:49

Have a look at this bug report: tpm_tis 00:0a: tpm_transmit: tpm_send: error -62 (for Fedora, but since it's kernel related could apply to Ubuntu).

The workaround for the issue seems to be to add


to the kernel command line.

(If that doesn't work for you, make sure you have the latest update of the Ubuntu kernel installed.)

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That did not work.. – Andreas Petersson May 21 '11 at 10:41
do you have the latest ubuntu kernel? did the dmesg output change at all? – Mat May 21 '11 at 10:42
up vote 1 down vote accepted

apparently one driver (tpm_tis) was blocking the startup. i tried editing /etc/default/grub

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash tpm_tis.interrupts=0"

but this did not work, dmesg did the same output.

but then i disabled the module tpm_tis alltogether by adding

blacklist tpm_tis

to /etc/modprobe.d/blacklist.conf this pushed startup down to 17s after bios - 31 seconds from cold start

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