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ubiquity package

laptop toshiba c670-183, cant boot in none of the distributions, how can i make it work?

Asked by Mihai Constantin Alexandru

laptop toshiba c670-183
i have tried to boot from live cd or usb but none of these work, it remains blocked in a black screen. i also tried to disable the ahci from bios. how can i make it work ?

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Manfred Hampl
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Manfred Hampl (m-hampl) said : 		#1

You should try the option "nomodeset" (eventually also "acpi=off" or "acpi=copy_dsdt") as described in https://help.ubuntu.com/community/BootOptions

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Mihai Constantin Alexandru (costinmike) said : 		#2

I managed to install it with nomodset, but after that on booting it s only a black screen, i ve tried pressing shitft milions of times it doesnt do anything. i think it s a bug. i will stay with windows because i don t have time to install everything again

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Manfred Hampl (m-hampl) said : 		#3

You have to be aware that providing the "nomodeset" option as addition to the command line (which aparently is helping on your system) is valid for the current boot process.

For adding such parameter that it is automatically taken into account each time the system is booted you have to add it to the grub parameter file. see https://help.ubuntu.com/community/BootOptions#Changing_boot_options_Permanently_for_an_Existing_Installation

The best way to do that is:
1. Switch on your system and hold down the shift key when the system boots. Your computer should come up with the grub menu. Edit the command line and add nomodeset. This should then boot into the graphical display for logging in.
2. Open a terminal end issue the command "sudo gedit /etc/default/grub" (you wll be asked to enter your password)
Change the line that reads 'GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"'
to 'GRUB_CMDLINE_LINUX_DEFAULT="quiet splash nomodeset"'
save the file and close the editor
3. Issue the command "sudo update-grub"
If you have done everything correct (and as long as there are not additional problems), from now on the system should boot into Ubuntu without problems.

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Mihai Constantin Alexandru (costinmike) said : 		#4

i already tried, the thing is that pressing shift does not let me to enter the grub menu, it doesnt happen anything

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Best Manfred Hampl (m-hampl) said : 		#5

Finding the right moment for pressing the 'shift' key can be a but tricky.

There are also other ways, that are a bit intricate.
1. boot a live CD (in your case of course with the nomodeset parameter)
2. in the running live session open a terminal
3. mount your hard disk to the live session with the command
sudo mount /dev/sda2 /mnt
(Here you have to provide the device of your root file system. Depending on your situation this might have a different name!)
4. enter the following commands
sudo mount -o bind /dev /mnt/dev
sudo mount -o bind /sys /mnt/sys
sudo mount -t proc /proc /mnt/proc
5. Execute the change into the system on your hard disk
sudo chroot /mnt /bin/bash
6. perform the changes as provided earlier
sudo gedit /etc/default/grub
(add nomodeset)
sudo update-grub
7. go back to the live CD system and reboot
exit
sudo reboot

On the intranet there are some more elaborate descriptions, you might find them when you use the search terms "ubuntu chroot update-grub nomodeset"

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Mihai Constantin Alexandru (costinmike) said : 		#6

i solved the problem by burning a cd with grub repair and added nomodeset to options