TODO: Initial install of USB DVD drive TODO: Kernel parameters for first boot TODO: Kernel parameters in grub config TODO: Mainline kernel usage TODO: laptop-mode-tools install TODO: Links to Chromium website, Arch website, Reddit page TODO: https://blogs.fsfe.org/the_unconventional/2014/04/20/c720-ubuntu/
Based on http://www.reddit.com/r/chrubuntu/comments/1rsxkd/list_of_fixes_for_xubuntu_1310_on_the_acer_c720/ch74rbg , which makes the keyboard a lot more usable (Home, End, PgUp and PgDown!):
git clone https://github.com/dnschneid/crouton.git
cd targets
sudo bash keyboard
TODO: Incorporate keyboard2
Note that the "keyboard" script from Crouton will output a number of alarming-looking commands to the terminal, setting various default options, but those commands are not actually run! The script should only run the commands necessary to set up the xkb file for the "chromebook" keyboard.
Once that script has run, copy 98xkb-chromebook into place:
cp 98xkb-chromebook /etc/X11/Xsession.d
and then reboot.
After that, the following keyboard combinations will work (copied from http://www.reddit.com/r/chrubuntu/comments/1rsxkd/list_of_fixes_for_xubuntu_1310_on_the_acer_c720/ch74rbg ):
- "search"+F1 = XF86Back
- "search"+F2 = XF86Forward
- "search"+F3 = XF86Reload
- "search"+F4 = XF86Display
- "search"+F5 = XF86ApplicationRight
- "search"+F6 = XF86MonBrightnessDown
- "search"+F7 = XF86MonBrightnessUp
- "search"+F8 = XF86AudioMute
- "search"+F9 = XF86AudioLowerVolume
- "search"+F10 = XF86AudioRaiseVolume
- "search"+1,2,3,4,5,6,7,8,9,0 = F1,F2,F3,F4,F5,F6,F7,F8,F9,F10 ( this is additional F keys, native F keys working as usual)
- "search"+minus = F11
- "search"+equal = F12
- "search"+backspace = Del
- "search"+period = Ins (second key from the right shift)
- "search"+left = Home
- "search"+right = End
- "search"+up = PgUP
- "search"+down = PgDown
- "search"+Alt = Capslock
Having swap on an SSD is a bad idea in terms of wearing out the SSD.
There's a feature called "zram" where some of the RAM is dedicated as swap memory, and the swap is compressed into RAM. This can also be faster than storing swap on an HDD. The trade off is CPU vs. disk access time for HDDs.
First install it:
apt-get install zram-config
Then disable the swap disk in /etc/fstab. On my machine running Ubuntu 14.04 LTS x86_64 I commented out:
#/dev/mapper/ubuntu--vg-swap_1 none swap sw 0 0
Then reboot for everything to take effect.
The default configuration is to use 1/2 physical RAM for compressed swap. On a 2 GB machine, that means only 1 GB physical RAM is available for resident memory (RSS). To increase that to 1.5 GB RAM, change the following line in /etc/init/zram-config.conf :
mem=$(((totalmem / 2 / ${NRDEVICES}) * 1024))
to:
mem=$(((totalmem / 4 / ${NRDEVICES}) * 1024))
After that you may wish to free up the Logical Volume (LV) that is set up by the Ubuntu installer for swap. I did this online; you may wish to do it via a rescue disk. You may find https://help.ubuntu.com/community/ResizeEncryptedPartitions#Enlarge_an_encrypted_partition helpful.
First, make a backup!
Then switch to the first virtual console using Ctrl+F1, and switch to root:
sudo -s
su -
See what Logical Volumes are defined:
lvs
Remove the swap LV and resize your root LV to the whole of the Physical Volume. Then resize the ext3 or ext4 filesystem ONLINE:
lvremove ubuntu-vg/swap_1
lvresize ubuntu-vg/root +100%FREE
resize2fs /dev/mapper/ubuntu--vg--root
touch /forcefsck
and then reboot.
Note: Online resizing of ext4 filesystems is supported in Linux 3.x.
TODO: Try shrinking the zram usage to 1/4 RAM (i.e.: 512 MB RAM) to see if that still works OK.
Borrowed from https://blogs.fsfe.org/the_unconventional/2014/04/20/c720-ubuntu/ , you can set the default backlight brightness in /etc/rc.local by adding something like this before the "exit 0" line:
# Set brightness to around 40% max brightness.
sleep 2
echo 322 > /sys/class/backlight/intel_backlight/brightness
TODO: Something about using redshift to change default blue-ish display temp
Hugegreenbug ported the ChromeOS touchpad driver to Linux. This gives a much greater responsiveness under Linux, and is well worth installing. Links:
https://github.com/hugegreenbug/xf86-input-cmt https://www.reddit.com/r/chrubuntu/comments/2zb9ao/news_chromeos_mouse_driver_for_linux_version_2/
Instructions to install it:
sudo apt-add-repository ppa:hugegreenbug/cmt2 sudo apt-get update sudo apt-get install xf86-input-cmt
sudo mv /usr/share/X11/xorg.conf.d/50-synaptics.conf /usr/share/X11/xorg.conf.d/50-synaptics.conf.out-of-way sudo sync && sudo sync && sudo reboot