I use ubuntu on Dell Inspiron n4050.I have upgraded to ubuntu 12.04 from 10.04.
But now I find the system startup is a little slow and plymouth only show purple screen without logo during startup.
When I use dmesg, it shows such messages:
I wonder what it is doing between 2 second and 21 second. Is it related to being so slow?
[ 2.497750] EXT4-fs (sda1): mounted filesystem with ordered data mode. Opts: (null)
[ 2.603028] usb 2-1.6: new high-speed USB device number 3 using ehci_hcd
[ 2.715538] Initializing USB Mass Storage driver...
[ 2.715594] usbcore: registered new interface driver usb-storage
[ 2.715596] USB Mass Storage support registered.
[ 21.317843] Adding 2000892k swap on /dev/sda5. Priority:-1 extents:1 across:2000892k
[ 21.323724] ADDRCONF(NETDEV_UP): eth0: link is not ready
[ 21.391450] udevd: starting version 175
I tried bootchart. It gave me a complex picture. Sorry I can't post it here. https://docs.google.com/open?id=0B_U5quEFRFT_a2k1WEZPOEU1Mm8
While ubuntu is booting , I also noticed that it appears:
/tmp is not ready or present And sometimes follows
*Stop saving kernel messages. Is this the reason dmesg lost output?