Showing posts from September, 2015

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 cd rtlwifi_new make sudo make install

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

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

5) Turn off t…

Create bootable USB flash to boot ISO

Follow these steps to create bootable USB Flash to boot multiple ISO. Using this USB Flash you dont have to bring many installation/recovery DVD.

1. Format USB Flash using FAT32 partition
2. mount it somewhere to /mnt/MOUNTPOINT
3. Install GRUB2

grub-install --target x86_64-efi --efi-directory /mnt/MOUNTPOINT --boot-directory=/mnt/MOUNTPOINT/boot/ --removable

4. Copy ISO files to /mnt/MOUNTPOINT/iso
5. Edit /mnt/MOUNTPOINT/boot/grub/grub.cfg

Use this example for start:

menuentry 'lenovo diagnostic' {
    set isofile='/iso/linux-bootable-cd-4307318.iso'
    loopback loop $isofile
    linux (loop)/live/vmlinuz boot=live config findiso=$isofile
    initrd (loop)/live/initrd.img

menuentry 'systemrescuecd-x86-4.5.4.iso' {
    set isofile='/iso/systemrescuecd-x86-4.5.4.iso'
    loopback loop $isofile
    linux (loop)/isolinux/rescue64 isoloop=$isofile
    initrd (loop)/isolinux/initram.igz

menuentry 'wily-desktop-amd64.iso' {
    set isofile='…