Lenovo IdeaPad U330p - ArchWiki

# Lenovo IdeaPad U330p

## Overview

There are no major issues with Lenovo U330p. Everything works.

This page contains just some comments that may be useful during installation or troubleshooting.

## Hardware

The unit used for testing contained the following hardware:

- Intel Core i5-4200U Processor

- Intel HD Graphics 4400

- Atheros AR9462 Wireless Network Adapter

- A thin Seagate 500GB hybrid drive (i.e. 500GB HDD + 8GB SSD).

## Installation

The best way to ensure that Arch Linux is correctly installed is to follow the Beginners' guide step by step.

### BIOS setup

Before booting with the USB stick, enter the BIOS in order to prepare the machine for the new OS. For that purpose, press the small button on the side panel next to the HDMI port. A boot menu will appear. Select "BIOS Setup", and then:

- In the "Security" menu, disable "Secure Boot" (although Arch Linux can be configured to work with secure boot, this will probably spare you a few issues during installation).
- In the "Boot" menu, leave "Boot Mode" set to "UEFI", and "USB Boot" enabled.
- In the "Exit" menu, set "OS Optimized Defaults" to "Other OS". Exit by saving changes.

## Configuration

### Sound card

Set the default sound card by creating an `alsa-base.conf` file in `/etc/modprobe.d/`:

    # nano /etc/modprobe.d/alsa-base.conf

    options snd_hda_intel index=1

and then reboot.

Install alsa-utils and run `alsamixer` to unmute the channels, as described here.

### Video driver

Use xf86-video-intel. This is the correct driver for the hardware and it is being developed with the support of Intel.

At the time of this writing (Dec. 2013), Intel has just released extensive information about this graphics hardware.

### Touchpad

Install xf86-input-synaptics as explained in the Beginners' guide.

This will make sure that the touchpad works correctly and will also provide two-finger scrolling.

## Troubleshooting

### Use of headphones

If you use headphones often and you shutdown the machine with the headphones plugged in, it may happen that in the next reboots the sound is directed to the headphones by default, even when the headphones are not plugged in.

To fix this issue:

- Plug the headphones in and out. The sound should now be directed to the speakers.

- Install and run pavucontrol once (you don't have to do anything, just open it, browse through the different tabs, and close it).

- Reboot the machine (ensuring that the headphones are not plugged in). The sound should now be directed back to the speakers by default.

### Network connectivity/latency

When using NetworkManager, it appears that wireless networking is not as responsive as it could or should be. For example, there is a noticeable lag when trying to acess some websites that should open immediately (e.g. Google, YouTube, etc.)

On the Web, there are several reports of connectivity/latency problems with this particular hardware (Atheros AR9462). However, some testing with Wicd seems to indicate that the network adapter is working fine.

There are some things that can be tried to alleviate this problem:

- Disable IPv6 in NetworkManager. Go to Wi-Fi settings and turn off IPv6 for each wireless network that you connect to.

- Create an `ath9k.conf` file to specify the option `nohwcrypt=1`:

    # sudo nano /etc/modprobe.d/ath9k.conf

    options ath9k nohwcrypt=1

and then reboot.

### Wired networking

This model does not have an Ethernet port, but it is possible to use a USB-to-Ethernet adapter. One such adapter is ASUS USB Ethernet Cable, which works right out of the box.

### VGA output

If you need to connect to an external monitor or projector through VGA, you can use an HDMI-to-VGA adapter such as this one, which works quite well.

Category:

- Lenovo