LG_P1_Express

1 General
2 Hardware overview
3 CPU
4 Video
- 4.1 Console
- 4.2 Xorg
5 Audio
6 Network controller
7 WLAN
8 Hard disk and DVD
9 USB
10 Card Reader
11 Modem
12 Bluetooth
13 Fingerprint Reader
14 Appendix A: lspci
15 Appendix B: lsusb

General

This guide is about how to install Linux on the LG P1 Express.

This machine is very similar technically to the LG C1.

Hardware overview

CPU	Intel Centrino Duo T2400 (1.83Ghz)
Hard disk	100 GB Serial ATA 2.5"
DVD-RW	LG/GoldStar GSA-4082N DVD-RAM
Video	ATI Mobility Radeon X1400 (some models are available with an Intel card as well)
Audio	Intel ICH7 Audio
Display	15.35" (390mm) widescreen high-gloss TFT
Cardreader	CompactFlash reader and 5-in-1 (SD Memory Card, Memory Stick, Memory Stick PRO, MultiMediaCard, xD-Picture Card)
LAN	Agere Systems ET-131x PCI-E Ethernet Controller (10/100/1000Base)
WIFI	Intel Corporation PRO/Wireless 3945ABG Network Connection
Modem	Intel ICH7 Softmodem
USB	3 ports, Intel EHCI USB 2.0
IEEE1394	1 port, Texas Instruments PCIxx12 OHCI
PCMCIA/Cardbus	1 Type-I slot, takes 16-bit PCMCIA and 32-bit Cardbus peripherals
Bluetooth	Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode)
Fingerprint Reader	AuthenTec, Inc. AES2501
Audio	1 Line-in, 1 Microphone input, 1 Headphone output

CPU

The T2400 is a dual core CPU, for portage, I used:

File: make.conf

 CFLAGS="-O2 -march=pentium-m -pipe"
 USE="sse sse2 mmx mmxext [...]"

Video

Relevant hardware:

VGA compatible controller: ATI Technologies Inc Radeon Mobility X1400 (or Intel in some models)
15.35" XGA TFT screen (native resolution 1280�800)

Console

For console, I used plain VGA, since the box spends much of its time in X. VESA should work however.

Xorg

X.org 7.2.0 works flawlessly, however on an ATI-based laptop like the one I set up, one has to either put up with VESA graphics, or use the ATI Proprietary driver. I haven't bothered with OpenGL, however it should work in theory. Configuration of X with the ATI driver largely JustWorks, on VESA I couldn't get it to run at the screen's native resolution.

For the touch pad, you'll want the Synaptics driver installed. The relevant parts of xorg.conf are listed below.

File: xorg.conf :: Touchpad

Section "InputDevice"
        Identifier  "TouchPad"
        Driver      "synaptics"
        Option      "Device" "/dev/input/mouse0"
        Option      "Protocol" "auto-dev"
        Option      "LeftEdge" "1700"
        Option      "RightEdge" "5300"
        Option      "TopEdge" "1700"
        Option      "BottomEdge" "4200"
        Option      "FingerLow" "25"
        Option      "FingerHigh" "30"
        Option      "MaxTapTime" "180"
        Option      "MaxTapMove" "220"
        Option      "VertScrollDelta" "100"
        Option      "MinSpeed" "0.09"
        Option      "MaxSpeed" "0.18"
        Option      "AccelFactor" "0.0015"
        Option      "SHMConfig" "on"
EndSection

Audio

Relevant hardware:

Audio device: Intel Corporation 82801G (ICH7 Family) High Definition Audio Controller (rev 02)

For this device, use the in-kernel snd-hda-intel driver in kernel 2.6.23 or above (it may work in earlier releases too). However, there's a catch -- the driver doesn't autodetect the mixer correctly. The symptoms include:

Multiple capture channels that seem to do nothing
An inability to record from the line-in socket, regardless of mixer settings
Internal speakers non-functional (but sound works through external speakers)
The kernel emits this message in dmesg:

hda_codec: Unknown model for ALC880, trying auto-probe from BIOS...

The card is based around the Realtek ALC880 codec which comes in a number of forms. This autodetection can be overridden via the model parameter to the snd-hda-intel driver.

The model parameter takes a number of parameters, see your kernel sources in linux/sound/pci/hda/patch_realtek.c and grep for alc880_models for an up-to-date list. The following is taken from kernel 2.6.23:

File: linux/sound/pci/hda/patch_realtek.c

static const char *alc880_models[ALC880_MODEL_LAST] = {
        [ALC880_3ST]            = "3stack",
        [ALC880_TCL_S700]       = "tcl",
        [ALC880_3ST_DIG]        = "3stack-digout",
        [ALC880_CLEVO]          = "clevo",
        [ALC880_5ST]            = "5stack",
        [ALC880_5ST_DIG]        = "5stack-digout",
        [ALC880_W810]           = "w810",
        [ALC880_Z71V]           = "z71v",
        [ALC880_6ST]            = "6stack",
        [ALC880_6ST_DIG]        = "6stack-digout",
        [ALC880_ASUS]           = "asus",
        [ALC880_ASUS_W1V]       = "asus-w1v",
        [ALC880_ASUS_DIG]       = "asus-dig",
        [ALC880_ASUS_DIG2]      = "asus-dig2",
        [ALC880_UNIWILL_DIG]    = "uniwill",
        [ALC880_UNIWILL_P53]    = "uniwill-p53",
        [ALC880_FUJITSU]        = "fujitsu",
        [ALC880_F1734]          = "F1734",
        [ALC880_LG]             = "lg",
        [ALC880_LG_LW]          = "lg-lw",
#ifdef CONFIG_SND_DEBUG
        [ALC880_TEST]           = "test",
#endif
        [ALC880_AUTO]           = "auto",
};

The magical setting we want, is "lg". The following is what I use to load the driver:

File: /etc/modprobe.d/alsa

# Generated stuff by alsaconf...
alias /dev/mixer snd-mixer-oss
alias /dev/dsp snd-pcm-oss
alias /dev/midi snd-seq-oss

alias snd-card-0 snd-hda-intel
alias sound-slot-0 snd-hda-intel
# generated stuff ends here...

## Tell the driver what model mixer you have
options snd-hda-intel model=lg

Once you've done this, run update-modules and you should be set.

Network controller

Relevant hardware:

Ethernet controller: Agere Systems ET-131x PCI-E Ethernet Controller (rev 03)

This card works with the et131x driver, but this driver is not yet included with the kernel or portage. To get this driver you'll have to download the source from the Agere ET131x ethernet driver project [1] and compile it manually.

WLAN

Relevant hardware:

Network controller: Intel Corporation PRO/Wireless 3945ABG Network Connection (rev 02)

See this guide.

Hard disk and DVD

Relevant hardware:

IDE interface: Intel Corporation 82801G (ICH7 Family) IDE Controller (rev 02)
SATA controller: Intel Corporation 82801GBM/GHM (ICH7 Family) SATA AHCI Controller (rev 02)

For this device, you use the ata_piix driver:

Linux Kernel Configuration: ata_piix

Device Drivers  --->
  <*> Serial ATA (prod) and Parallel ATA (experimental) drivers  --->
    <*>   Intel ESB, ICH, PIIX3, PIIX4 PATA/SATA support

Include this in-kernel, and also make sure you throw in SCSI disk support:

Linux Kernel Configuration: sd_mod

Device Drivers  --->
  SCSI device support  --->
    <*> SCSI disk support
    <*> SCSI CDROM support
    <*> SCSI generic support

The latter two may be modules, but if you're booting without an initrd like I am, you must have SCSI disk support compiled in.

USB

Relevant hardware:

USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #1 (rev 02) �4
USB Controller: Intel Corporation 82801G (ICH7 Family) USB2 EHCI Controller (rev 02)

The three USB ports on the laptop support USB 1 and 2.0.

Card Reader

Relevant hardware:

Mass storage controller: Texas Instruments 5-in-1 Multimedia Card Reader (SD/MMC/MS/MS PRO/xD)
Class 0805: Texas Instruments PCIxx12 SDA Standard Compliant SD Host Controller

Works in kernel >=2.6.19 using the tifm_sd module:

Linux Kernel Configuration: tifm_sd

Device Drivers --->
  [*] Misc devices  --->
    <M>   TI Flash Media interface support (EXPERIMENTAL)
    <M>     TI Flash Media PCI74xx/PCI76xx host adapter support (EXPERIMENTAL)
  <M> MMC/SD card support  --->
    <M>   TI Flash Media MMC/SD Interface support  (EXPERIMENTAL)

Not tested with SDIO devices, however it works fine with SD storage cards.

Modem

The modem is supported by the hsfmodem. See this guide.

Bluetooth

Relevant Hardware:

(on USB) Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode)

The bluetooth device embedded in this laptop sits on USB, and is supported by the hci_usb driver.

Linux Kernel Configuration: hci_usb

Networking  --->
  <M>   Bluetooth subsystem support  --->
    Bluetooth device drivers  --->
      <M> HCI USB driver

Works flawlessly, tested with a Bullant ABA700 bluetooth headset. For userland tools, look at the Bluez tools.

Fingerprint Reader

Relevant Hardware:

(on USB) AuthenTec, Inc. AES2501 Fingerprint Sensor

Support for fingerprint readers under Linux is really crude at the moment, especially for this device. You'll want to have a look at the fprint project for tools to use this device. I can get it to scan my fingerprint, but it seems I'm not precise enough with my movements to get it to verify it correctly.

Appendix A: lspci

Code: lspci

00:00.0 Host bridge: Intel Corporation Mobile 945GM/PM/GMS, 943/940GML and 945GT Express Memory Controller Hub (rev 03)
00:01.0 PCI bridge: Intel Corporation Mobile 945GM/PM/GMS, 943/940GML and 945GT Express PCI Express Root Port (rev 03)
00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High Definition Audio Controller (rev 02)
00:1c.0 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 1 (rev 02)
00:1c.2 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 3 (rev 02)
00:1c.3 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 4 (rev 02)
00:1d.0 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #1 (rev 02)
00:1d.1 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #2 (rev 02)
00:1d.2 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #3 (rev 02)
00:1d.3 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI Controller #4 (rev 02)
00:1d.7 USB Controller: Intel Corporation 82801G (ICH7 Family) USB2 EHCI Controller (rev 02)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev e2)
00:1f.0 ISA bridge: Intel Corporation 82801GBM (ICH7-M) LPC Interface Bridge (rev 02)
00:1f.1 IDE interface: Intel Corporation 82801G (ICH7 Family) IDE Controller (rev 02)
00:1f.2 SATA controller: Intel Corporation 82801GBM/GHM (ICH7 Family) SATA AHCI Controller (rev 02)
00:1f.3 SMBus: Intel Corporation 82801G (ICH7 Family) SMBus Controller (rev 02)
01:00.0 VGA compatible controller: ATI Technologies Inc Radeon Mobility X1400
02:00.0 Ethernet controller: Agere Systems ET-131x PCI-E Ethernet Controller (rev 02)
05:00.0 Network controller: Intel Corporation PRO/Wireless 3945ABG Network Connection (rev 02)
06:00.0 CardBus bridge: Texas Instruments PCIxx12 Cardbus Controller
06:00.1 FireWire (IEEE 1394): Texas Instruments PCIxx12 OHCI Compliant IEEE 1394 Host Controller
06:00.2 Mass storage controller: Texas Instruments 5-in-1 Multimedia Card Reader (SD/MMC/MS/MS PRO/xD)
06:00.3 Class 0805: Texas Instruments PCIxx12 SDA Standard Compliant SD Host Controller

Appendix B: lsusb

Code: lsusb

Bus 005 Device 001: ID 0000:0000
Bus 004 Device 003: ID 08ff:2580 AuthenTec, Inc.
Bus 004 Device 001: ID 0000:0000
Bus 001 Device 001: ID 0000:0000
Bus 003 Device 003: ID 0a12:0001 Cambridge Silicon Radio, Ltd Bluetooth Dongle (HCI mode)
Bus 003 Device 001: ID 0000:0000
Bus 002 Device 001: ID 0000:0000

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LG_P1_Express

Contents

General

Hardware overview

CPU

Video

Console

Xorg

Audio

Network controller

WLAN

Hard disk and DVD

USB

Card Reader

Modem

Bluetooth

Fingerprint Reader

Appendix A: lspci

Appendix B: lsusb