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Help!! I currently have 10.04 and 11.10 installed on a Compaq laptop. 10.10 boots first time, every time and apart from a wireless issue runs fine. 11.10, however,doesn't boot first time. Boot up for 11.10 (with Unity) is very random. When it boots, everything works fine but sometimes I need to reboot the PC 3 or 4 times before it kicks in.

When it doesn't boot, I am left with, either, a purple screen or a black screen (with a flashing cursor in the top left hand corner) and the laptop doesn't respond to any combination of keys pressed. I guess I could just stick with 10.04, but I really want to be using 11.10 and Unity. Any clues anybody?

Laptop is a Compaq Presario R3000 series with NVIDIA GeForce4 420 graphics. Since posting this question, I have removed 10.04 (LTS) and re-installed 11.10 only but am still experiencing the same intermittent boot issues.

Live CD's always boot but once I have installed, whether Ubuntu, Kubuntu or Xubuntu, the problem persists. Usually, after install, when prompted to restart, the laptop fails to boot first time.I have tried nouveau and nvidia drivers with no change. Point to note: on the first boot after install, the grub timeout of 10s shows but on rebooting again the timeout is not in the grub menu. I have also tried with and without security or recommended updates. 10.04 always boots.

Come on people!! First posted Dec18 and still no suggestions.....

EDIT: here is the bug https://bugs.launchpad.net/ubuntu/+source/linux/+bug/903961 a fix is being worked on currently, until then boot with acpi=off

    gksu gedit /etc/default/grub

change this line

    GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi=off"

and run

    sudo update-grub
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closed as off topic by Marco Ceppi Feb 1 '12 at 17:24

Questions on Ask Ubuntu are expected to relate to Ubuntu within the scope defined by the community. Consider editing the question or leaving comments for improvement if you believe the question can be reworded to fit within the scope. Read more about reopening questions here.If this question can be reworded to fit the rules in the help center, please edit the question.

    
What laptop model do you have? Have you tried to install any drivers for your graphics? –  Bruno Pereira Dec 12 '11 at 18:14
    
This question should instead be filed as a bug report, thanks! Instructions here. –  Jjed Feb 1 '12 at 17:17

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