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Thread: after upgrade to 10.04 (from 9.10) only some kernels boot

  1. #1
    Join Date
    Sep 2009
    Beans
    6

    after upgrade to 10.04 (from 9.10) only some kernels boot

    friends

    I use ubuntu for almost 3 yrs. I had installed 8.04 on my Acer TravelMate 5720 laptop.
    I have been upgrading to newer releases and eventually reached 10.04 last week.

    In the grub, I see quite a few kernels listed. The first few are (I've omitted the recovery stuff)

    linux-image-2.6.32-22-generic-pae 2.6.32-22.33
    linux-image-2.6.32-22-generic 2.6.32-22.33
    linux-image-2.6.31-21-generic-pae 2.6.31-21.59
    linux-image-2.6.31-21-generic 2.6.31-21.59
    linux-image-2.6.31-20-generic-pae 2.6.31-20.58
    linux-image-2.6.31-20-generic 2.6.31-20.58
    linux-image-2.6.28-18-server 2.6.28-18.60
    linux-image-2.6.28-18-generic 2.6.28-18.60
    linux-image-2.6.28-17-server 2.6.28-17.58
    linux-image-2.6.28-17-generic 2.6.28-17.58
    linux-image-2.6.28-16-server 2.6.28-16.57

    But not every one of them boot. Since I have 4GB of RAM I am interested in "pae" enabled kernels. But when I choose them, the grub reboots.

    After some trial and error I found that ONLY 2.6.31-21-generic works. But it does not make use of 4GB RAM.

    I tried deleting files in /boot/grub that end with *1_5, as somewhere I read this would fix the grub reboot issue. But that dint help. Grub reboots only for certain kernels.

    I desperately need to get pae work as I am running virtualbox with guests OSes (windows & Suse). Any pointers would be of great help.

    -sathya

  2. #2
    Join Date
    Jun 2006
    Location
    Nux Jam
    Beans
    Hidden!
    Distro
    Ubuntu Development Release

    Re: after upgrade to 10.04 (from 9.10) only some kernels boot

    pae kernels work fine

    have you removed everything about grub-legacy and menu.lst ?

    As grub2 (grub-pc and grub-common) cant work well if it find old settings from grub-legacy, you need to remove/purge (right click) ALL the grub packages installed and menu.lst, then install grub-pc and grub-common (when asked, install grub on your ubuntu partition)

    into synaptic you can remove/purge all the kernels you dont want/need, then:

    sudo grub-mkconfig
    sudo update-grub

    sudo apt-get install -f
    sudo dpkg --configure -a

  3. #3
    Join Date
    Sep 2009
    Beans
    6

    Re: after upgrade to 10.04 (from 9.10) only some kernels boot

    Thanks dino99

    1. I found that I am running grub-legacy (version 0.97). So I installed grub2 (version 1.98)
    2. Then I made grub 2 as my default. Removed all menu.lst stuff.
    3. When I tried with a pae, it did not reboot. But did not book either. It stopped in with Kernel_thread_xxx kind of message.
    4. Through synaptic, I removed unwanted old kernels. I re-installed 2.6.32.21-generic-pae.
    5. In the grub menu I chose the pae that I re-installed. It worked !
    It utilizes the entire 4 GB (3.8GiB).

    Thanks a lot.

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