Lenovo E450 on Ubuntu Gnome

Some notes running Lenovo E450 on Ubuntu Gnome:

0) Install using UEFI boot
Your harddisk will use GPT partition
My setting is UEFI boot only, CSM off

1) Wi-Fi disconnect (no problem when using 15.10)

sudo apt-get install git build-essential
git clone https://github.com/lwfinger/rtlwifi_new.git
cd rtlwifi_new
make
sudo make install

http://askubuntu.com/questions/628641/rtl8723be-poor-and-unstable-wireless-in-ubuntu-from-14-04-to-15-04

Create /etc/modprobe.d/rtl8723be.conf
options rtl8723be fwlps=0 ips=0

2) Touchpad, when using two finger and moving windows, always jumping to right

Go to Settings, Mouse & Touchpad, set Pointer speed to Slow (full left)

3) Grub boot just show grey screen for a few second, then show gnome logo and boot normally

Currently no workaround, reported to ubuntu bug

4) Battery charging threshold

apt-get install acpi-call-dkms

Install tp-acpi-call from https://github.com/teleshoes/tpacpi-bat

./tp-acpi-call -s start 1 40
./tp-acpi-call -s stop 1 51

5) Turn off touchpad by shortcut

--- SCRIPT ---
zenity --question --text="Turn off touchpad?" && synclient TouchpadOff=1 || synclient TouchpadOff=0
--- END OF SCRIPT ---

Go to Settings , Keyboards, Shortcut, add Custom Shortcut executing the script

6) Auto choose GPU based on time: Radeon or Intel

--- SCRIPT ---
#!/bin/sh

DOW=`date +%w`
HOUR=`date +%H`

if [ $DOW -eq 0 ] || [ $DOW -eq 6 ]; then
    amdconfig --px-dgpu
elif [ $HOUR -gt 3 ] && [ $HOUR -lt 19 ]; then
    amdconfig --px-igpu
else
    amdconfig --px-dgpu
fi
--- END SCRIPT ---

Execute script in rc.local

7) Font too small in desktop (Full HD)

Settings, Universal access, Large text

8) Fingerprint: working using ubuntu gnome 15.10

apt-get install libpam-fprintd

Edit user from Settings, Users, record fingerprint
Then logout and try to login

For ubuntu 15.04, install this package manually (dpkg -i):
https://launchpad.net/ubuntu/wily/amd64/libfprint0/1:0.6.0-2

9) Suspend

works flawlessly if using intel gpu

To prevent your laptop in bag rapidly resume & suspend when battery very low (5%) , edit /etc/systemd/logind.conf and change:
HandleLidSwitch=poweroff

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