Dell Latitude D620 / D820

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Dell Latitude D620 / D820

[edit] Hardware

14,1 inch display @ 1280x800 or 1440x900 (D620)
15,4 inch display @ 1280x800 or 1680x1050 or 1920x1200 (D820)
Intel Core Duo or Intel Core 2 Duo processors
Intel 945GM chipset (ICH7)
Up to 2 GB RAM  	
Intel GMA 950 or NVIDIA Quadro NVS 110M
ALPS GlidePoint touchpad and trackpoint
Hitachi Travelstar hard drive
TSST L-532B optical drive
Broadcom NetXtreme BCM5752 Gigabit Ethernet
Intel PRO/Wireless 3945ABG or Dell Wireless 1390 wifi
Dell Wireless 350 Bluetooth
Connexcant modem
Dell Wireless 5520 HSDPA or Dell Wireless 5720 EVDO card
Intel High Definition Audio and built-in microphone
O2 Micro OZ601/6912/711E0 PC Card controller
SMsC IrDA controller
USB 2.0
SGS Thomson Microelectronics fingerpint sensor
O2 Micro Oz776 SmartCard reader
serial connector
docking station connector

[edit] Hardware Status Overview

	Device	Working	Driver	Troubleshooting
Processor	Processor
Drives and Storage	Hard Drive		ahci
	Optical Drive		ata_piix
USB	USB		uhci, ehci	See below
Graphics	Intel		i915, intel
	NVIDIA		nvidia
Input Devices	Keyboard		keyboard
	Touchpad		synaptics
	Trackstick		evdev
	Functions Keys
Networking	Ethernet		tg3
	WLAN: Intel		iwlwifi
	WLAN: Dell		b43, ndiswrapper
	Modem	unknown	hsfmodem
	Bluetooth		hci_usb	See below
	IrDA	unknown
Sound	Sound		snd_intel_hda	See below
Other	PC Card	unknown	yenta_socket
	Smartcard Reader	unknown
	Fingerprint Readers		fprint	See below
	Hardware Sensors	unknown	i8k
	Suspend to RAM	unknown
	Suspend to Disk	unknown

[edit] Dell Laptop guides

Dell specific laptop guides:

• Dell Function Keys
• Dell Hardware Sensors
• Dell BIOS Upgrade
• Dell Utility / System Restore / MediaDirect
• Dell Docking Station

[edit] Generic Laptop guides

Some generic laptop guides:

• ACPI
• Power Management

[edit] Troubleshooting

[edit] USB

The internal USB hub causes some problems if it runs in compatible mode (USB1.1). Just switch the device to USB2.0 using the system bios. The difference of the battery life time is between 5 and 10 minutes using the 9 cell battery.

[edit] Sound

To turn on the microphone, you have to:

• If you build the Intel HD Audio driver into the kernel, append snd-hda-intel.model=ref to the kernel line of your boot manger config, e.g. /boot/grub/grub.conf:

 kernel other_kernel_options snd-hda-intel.model=ref
 

• If you build the Intel HD Audio driver as modules, add the following to /etc/modprobe.d/snd_hda_intel:

 options snd_hda_intel model=ref
 

Afterwards run update-modules.

To activate the microphone you have to enable all Capture and Mux channels (left and right) and also set Input Source to Front Mic.

[edit] Bluetooth

I have some kernel messages about hci_usb_isoc_rx_submit: hci0 isoc rx submit failed urb df9a7c14 err -38. You can fix this by disabling isoc (Set isochronous transfers for SCO over HCI support):

• If you build the bluetooth HCI USB driver driver into the kernel, append hci_usb.isoc=0 to the kernel line of your boot manger config, e.g. /boot/grub/grub.conf:

 kernel other_kernel_options hci_usb.isoc=0
 

• If you build the bluetooth HCI USB driver driver as modules, add the following to /etc/modprobe.d/bluetooth:

 options hci_usb isoc=0
 

Afterwards run update-modules.

[edit] Fingerprint Reader

The reader does not work if the internal USB hub is switched to compatible mode (USB1.1). Just switch it in the BIOS to USB2.0 mode.

[edit] Clock

Change /etc/conf.d/clock:

 CLOCK_OPTS="--directisa"