Samsung R20P - ArchWiki

# Samsung R20P

### Hardware specification

NP-R20Y

- LCD - 14.1" WXGA Glare TFT screen
- CPU - Intel Core Duo T2330 @ 1.60Ghz
- RAM - 2GB DDR2 (2 slots)
- VGA - ATi Radeon Xpress 1250
- HDD - 160GB SATA Samsung HM160HIS
- CD/DVD - TS-L632H DL DVD+-RW SuperMulti
- Audio - Realtek ALC262
- Battery - 2600mAh LION / ~1.5-2h battery life

### Extra

- Audio In / Mic In
- 3 USB 2.0 Ports
- Sony Memory Stick Reader
- 1 VGA Out port
- 1 RJ-45
- 1 RJ-11
- 1 Express Card slot

# Installation

For installation I used both i686 and x86_64 2008.06 "Core" images. Installation of the system was very smooth, but to have a plesant experience with Arch Linux on this laptop I needed to tweak it a bit.

# Configuration

This laptop requires a bit tweaking to make it work without glitches on Arch Linux.

- CPU frequency scaling
- Pm-utils - Suspend / Hibernation
- ATI
- Laptop
- madwifi

## Audio

Note: Kernel 2.6.27 and Alsa 1.0.18 seems to be working without problems

### Troubleshooting

If you get hda-intel: Invalid position buffer, using LPIB read method instead message from dmesg or /var/log/everything.log edit your /etc/modprobe.d/modprobe.conf as root and write :

    options snd-hda-intel enable=1 index=0 position_fix=1

## Touchpad

See the Touchpad Synaptics page for instructions. Currently there are some issues with the touchpad which causes enormus CPU usage, freezes and lock-ups. To fix that open, again as root, /boot/grub/menu.lst and in the end of kernel section write :

    i8042.nomux=1 hpet=disable

## Wireless

Note: Kernel 2.6.27 contains an updated ath5k driver, wireless works out of the box. (wlan0)

# VGA Out

Proper resolution of the secondary monitor is detected after an X server restart using open source (xf86-video-ati) driver.

# Troubleshooting

- Suspend and Hibernation doesn't work with gnome-power-utils, but they work with pm-utils.

- Fn keys currently do not work with radeonhd driver, but they work with fglrx , but not all of them.

## Yet untested

- Modem
- Express Card

# Resources

### Output of lscpi -nn

     00:00.0 Host bridge [0600]: ATI Technologies Inc Radeon Xpress 7930 Host Bridge [1002:7930]
     00:01.0 PCI bridge [0604]: ATI Technologies Inc RS7932 PCI Bridge [1002:7932]
     00:05.0 PCI bridge [0604]: ATI Technologies Inc Device [1002:7935]
     00:06.0 PCI bridge [0604]: ATI Technologies Inc RS7936 PCI Bridge [1002:7936]
     00:07.0 PCI bridge [0604]: ATI Technologies Inc Device [1002:7937]
     00:12.0 SATA controller [0106]: ATI Technologies Inc SB600 Non-Raid-5 SATA [1002:4380]
     00:13.0 USB Controller [0c03]: ATI Technologies Inc SB600 USB (OHCI0) [1002:4387]
     00:13.1 USB Controller [0c03]: ATI Technologies Inc SB600 USB (OHCI1) [1002:4388]
     00:13.2 USB Controller [0c03]: ATI Technologies Inc SB600 USB (OHCI2) [1002:4389]
     00:13.3 USB Controller [0c03]: ATI Technologies Inc SB600 USB (OHCI3) [1002:438a]
     00:13.4 USB Controller [0c03]: ATI Technologies Inc SB600 USB (OHCI4) [1002:438b]
     00:13.5 USB Controller [0c03]: ATI Technologies Inc SB600 USB Controller (EHCI) [1002:4386]
     00:14.0 SMBus [0c05]: ATI Technologies Inc SBx00 SMBus Controller [1002:4385] (rev 14)
     00:14.1 IDE interface [0101]: ATI Technologies Inc SB600 IDE [1002:438c]
     00:14.2 Audio device [0403]: ATI Technologies Inc SBx00 Azalia (Intel HDA) [1002:4383]
     00:14.3 ISA bridge [0601]: ATI Technologies Inc SB600 PCI to LPC Bridge [1002:438d]
     00:14.4 PCI bridge [0604]: ATI Technologies Inc SBx00 PCI to PCI Bridge [1002:4384]
     01:05.0 VGA compatible controller [0300]: ATI Technologies Inc Radeon Xpress 1250 [1002:7942]
     05:00.0 Ethernet controller [0200]: Atheros Communications Inc. AR242x 802.11abg Wireless PCI Express Adapter [168c:001c] (rev 01)
     0b:05.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL-8139/8139C/8139C+ [10ec:8139] (rev 10)

Category:

- Samsung