ToshibaNB205

Differences between revisions 3 and 4
Revision 3 as of 2009-11-23 06:54:00
Size: 1309
Editor: capex
Comment:
Revision 4 as of 2010-02-01 05:36:23
Size: 2504
Editor: TheUbuntuGuy
Comment:
Deletions are marked like this. Additions are marked like this.
Line 27: Line 27:

'''Kernel Boot Fix'''

As of kernel 2.6.31-18, there have been problems relating to speed and the system intermittently freezing. By default, the NB 205 (and other related models such as the NB 200) sometimes freeze and suffer from low performance due to a power-saving feature of the Linux kernel. Dramatic speed increases have been noted with this feature disabled (boot speeds increased by 20 seconds). If you wish, this feature can be disabled.

To disable the kernel feature (if using the GRUB2 bootloader), use a text editor as root to open the file: /etc/grub.d/10_linux

Find the section near the top that looks as follows:

{{{
save_default_entry | sed -e "s/^/\t/"
  prepare_grub_to_access_device ${GRUB_DEVICE_BOOT} | sed -e "s/^/\t/"
  cat << EOF
 linux ${rel_dirname}/${basename} root=${linux_root_device_thisversion} ro $2
}}}

Add the following to the end of that last line:

{{{nohz=off}}}

...so the full line reads:

{{{linux ${rel_dirname}/${basename} root=${linux_root_device_thisversion} ro $2 nohz=off}}}

Then run the following from the Terminal to complete the fix:

{{{sudo update-grub}}}

A reboot will be required to apply the change.

Ubuntu Netbook Remix Post-Installation Help


The purpose of this guide is to enable Wifi, hibernate, and other features on the Toshiba NB205 that which do not work out of the box with Ubuntu Netbook Remix (UNR).

Wi-Fi

Wi-Fi must be enabled in Windows XP before installing UNR or else it is impossible to enable it. **Update** You can also enable your wifi by going into your BIOS setup at startup and enabling wifi.

From the main menu, go to Administration then Software Sources. In the Updates tab check "Unsupported updates (jaunty-backports)". After closing this window, Update Manager will likely ask you to allow it to check for updates, and you should do so. If it does not, issue in a terminal:

sudo aptitude update

...to retrieve new package lists.

After the package list update, from a console issue the following command to get Wi-Fi up and running.

sudo apt-get install linux-backports-modules-jaunty

This will install a new Linux kernel (2.6.28-14-generic as of this writing) which will be selectable from your boot loader upon restarting your computer.

Sound

To enable sound via headphone jack, use a text editor as root to add the following line to /etc/modprobe.d/alsa-base.conf:

options snd-hda-intel model=asus-mode4

Kernel Boot Fix

As of kernel 2.6.31-18, there have been problems relating to speed and the system intermittently freezing. By default, the NB 205 (and other related models such as the NB 200) sometimes freeze and suffer from low performance due to a power-saving feature of the Linux kernel. Dramatic speed increases have been noted with this feature disabled (boot speeds increased by 20 seconds). If you wish, this feature can be disabled.

To disable the kernel feature (if using the GRUB2 bootloader), use a text editor as root to open the file: /etc/grub.d/10_linux

Find the section near the top that looks as follows:

save_default_entry | sed -e "s/^/\t/"
  prepare_grub_to_access_device ${GRUB_DEVICE_BOOT} | sed -e "s/^/\t/"
  cat << EOF
        linux   ${rel_dirname}/${basename} root=${linux_root_device_thisversion} ro $2

Add the following to the end of that last line:

nohz=off

...so the full line reads:

linux    ${rel_dirname}/${basename} root=${linux_root_device_thisversion} ro $2 nohz=off

Then run the following from the Terminal to complete the fix:

sudo update-grub

A reboot will be required to apply the change.

HardwareSupport/Machines/Netbooks/ToshibaNB205 (last edited 2010-12-08 05:38:56 by onur)