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Thread: ubuntu 12.10 slow boot time

  1. #1
    Join Date
    Nov 2005
    Beans
    10

    ubuntu 12.10 slow boot time

    Since upgrading from precise (12.04), my ubuntu PC boot very slowly.

    I checked dmesg and I see a big gap:

    Code:
    [    2.769327] [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 0
    [    3.382362] EXT4-fs (sda5): INFO: recovery required on readonly filesystem
    [    3.382366] EXT4-fs (sda5): write access will be enabled during recovery
    [    4.625913] EXT4-fs (sda5): recovery complete
    [    4.636909] EXT4-fs (sda5): mounted filesystem with ordered data mode. Opts: (null)
    [   28.456177] Adding 2096444k swap on /dev/sda6.  Priority:-1 extents:1 across:2096444k 
    [   28.461205] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
    [   28.467773] udevd[396]: starting version 175
    Any idea of what append here? I have not found any clue in other logs and don't know how to resolve this.

    regards

    Christophe

  2. #2
    Join Date
    Jul 2006
    Location
    Castrum, Germania Secunda
    Beans
    1,071

    Re: ubuntu 12.10 slow boot time

    Looks like partition sda5 has a problem: needed recovery...

    Maybe something to do with upgrade woes? Did you perform a clean upgrade with previous formatting, or did you upgrade from within an existing 12.04?
    Tips, tweaks and how-to's for Ubuntu and Mint:
    http://sites.google.com/site/easylinuxtipsproject
    In for a pleasant surprise? Give Xubuntu a try:
    http://sites.google.com/site/easylin...roject/xubuntu

  3. #3
    Join Date
    Nov 2005
    Beans
    10

    Re: ubuntu 12.10 slow boot time

    sda5 is my system partition (I have a dual boot... even if I can't remember the last time I've started vista).

    I did an upgrade from 12.04 (I've done that since the first install, long time ago).

    What is puzzled me is the difference of time between the last message indicated that the sda5 is mounted and the swap mounted.
    May be the sda5 is not really monted when the message
    Code:
    [    4.636909] EXT4-fs (sda5): mounted filesystem with ordered data mode. Opts: (null)
    is displayed?

    In generated /etc/fstab, I have this entry:
    Code:
    # Entry for /dev/sda5 :
    UUID=f6e51472-f0e4-4466-98c9-3f064ec4875f / ext4 errors=remount-ro 0 1
    Do you see anything wrong?

  4. #4
    Join Date
    Jul 2006
    Location
    Castrum, Germania Secunda
    Beans
    1,071

    Re: ubuntu 12.10 slow boot time

    I see nothing wrong, but I advise a clean reinstallation nevertheless. It will possibly fix this problem, and if not, will make debugging a lot easier...

    It'll take you about 2 hours (30 minutes install, 90 minutes polishing). This is a how-to:
    https://sites.google.com/site/easyli...reinstallation
    Tips, tweaks and how-to's for Ubuntu and Mint:
    http://sites.google.com/site/easylinuxtipsproject
    In for a pleasant surprise? Give Xubuntu a try:
    http://sites.google.com/site/easylin...roject/xubuntu

  5. #5
    Join Date
    Nov 2005
    Beans
    10

    Re: ubuntu 12.10 slow boot time -> ureadahead terminates with status 5

    Well, it's not as easy... I've spent many days to have my computer working:
    • I have 2 gpu on my sony laptop (this part was very hard to configure)
    • I use Citrix client (the post install script is wrong and it must be manually updated)
    • I have to install oracle java (for java fx)
    • I need to install the driver for my scanner
    • etc, etc. (I'm sure I forget a lot of post install operations)


    What I've discovered with bootchart is that ureadahead took more that 20s. I follow the advise here: http://ubuntuforums.org/showthread.php?t=1434502 and remove pack files in /var/lib/ureadahead but now I have the error:
    Code:
    [    6.874423] EXT4-fs (sda5): recovery complete
    [    6.885446] EXT4-fs (sda5): mounted filesystem with ordered data mode. Opts: (null)
    [    9.618837] init: ureadahead main process (326) terminated with status 5
    [   10.761186] Adding 2096444k swap on /dev/sda6.  Priority:-1 extents:1 across:2096444k 
    [   11.866977] IPv6: ADDRCONF(NETDEV_UP): eth0: link is not ready
    and the pack files are not recreated.

  6. #6
    Join Date
    Nov 2005
    Beans
    10

    Re: ubuntu 12.10 slow boot time

    I reinstalled ureadahead package and the error disapear. The boot is still slow but now I know it is related to ureadahead files loading process.

    When I dump the process, I see there are a lot of file that may be not necessary to load at startup like chromium browser.

    I let you know if I'm sucessfull to enhance that.

  7. #7
    Join Date
    Feb 2013
    Beans
    1

    Re: ubuntu 12.10 slow boot time

    @domak: thanks for investigating - I've noticed the same problem after upgrading to 12.10 - have you found a solution yet?

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