DellLatitudeC840

  • Contact: Hubuntu

  • Make: Dell
  • Model: Latitude C840
  • Hardware version: Intel P4-m 2.4GHz, 512MB DDR, 40GB 5400rpm HD, Nvidia GForce 440 Go, 1600x1200 screen

Current Issues

Hardware details

in Dapper

in Edgy

in Feisty

in Jaunty

Installation works?

Yes

Yes

Yes

Yes

Hardware Information

Screen & Monitors

Device

Works?

in Dapper

in Edgy

in Feisty

in Jaunty

Screen

Yes

Yes

Yes

Yes

Correct resolution?

Yes

Yes

Yes

Yes

Correct refresh rate?

Yes

Yes

Yes

Yes

3D Acceleration

Not working

Not Working

Not Working

Working

GLX works with nvidia restricted drivers

External monitor works?

Yes

Yes

Yes

Yes

External monitor - mirrors

Yes

Yes

Yes

Yes

External monitor - extend desktop

Untested

Untested

Untested

Untested

Power Management

Battery detected?

Yes

Yes

Yes

Yes

Hibernates?

No

No

No

Yes

Sleep

Yes

Yes

Yes

Yes

Dim monitor on battery

Untested

No

No

Yes

Blank monitor on inactivity

Untested

Yes

Yes

Yes

Lid Close

Untested

Yes

Yes

Yes

Cpu frequency scaling

Untested

Yes

Yes

Yes

Sound

Sound works?

Yes

Yes

Yes

Yes

Correct volume?

Yes

Yes

Yes

Yes

Hardware volume switch

Yes

Yes

Yes

Yes

Headphone jack

Yes

Yes

Yes

Yes

Built-in Mic

Yes

Yes

No

Untested

Mic jack

Untested

Untested

Untested

Yes

Networking

Wired NIC

Yes

Yes

Yes

Yes

PCMCIA NIC

Untested

Yes

Yes

Untested

Firewire

Untested

Untested

Yes

Yes

Modem

Untested

Untested

Untested

Untested

Infrared

Untested

Untested

Yes

Untested

Touchpad & Mice

Touchpad

Yes

Yes

Yes

Yes

Touchpad - Doubletap = double click

Yes

Yes

Yes

Yes

Touchpad - Scroll down side

Yes

Yes

Yes

Yes

External mouse - USB

Yes

Yes

Yes

Yes

External mouse - Serial

Untested

Untested

Untested

Untested

Docking Station/Port Replicator

AC through replicator

Untested

Untested

Untested

Untested

USB

Untested

Untested

Untested

Untested

Serial

Untested

Untested

Untested

Untested

Parallel

Untested

Untested

Untested

Yes

External Monitor - VGA

Untested

Untested

Untested

Untested

External Monitor - DVI

Untested

Untested

Untested

Untested

Modem

Untested

Untested

Untested

Untested

NIC

Untested

Untested

Untested

Untested

PS/2

Untested

Untested

Untested

Untested

Additional Hardware

Fingerprint reader

Untested

Untested

Untested

Untested

CD/DVD drive

Yes

Yes

Yes

Yes

Floppy Drive

Untested

Untested

Yes

Untested

PCMCIA cards

Yes

Yes

Yes

Yes

Parallel Ports

Untested

Untested

Untested

Yes

Card reader(s)

Untested

Untested

Untested

Untested

Function and other keys

Fn key

Operation

Keycode

Works?

in Dapper

in Edgy

in Feisty

in Jaunty

+ Esc

Sleep

Untested

Untested

Untested

Yes

+ F1

Setup

Untested

Untested

Untested

No

+ F8

Tonggle External Monitor

Yes

Yes

Yes

Yes

+ F10

CD Eject

Yes

Yes

Yes

Yes

+ End

Volume Mute

Yes

Yes

Yes

Yes

+ PgUp

Volume +

Yes

Yes

Yes

Yes

+ PgDn

Volume -

Yes

Yes

Yes

Yes

+ Num Lock

Scroll Lock

Untested

No

No

Untested

+ .

Numpad .

No

No

No

No

+ M

Numpad 0

No

No

No

No

+ J

Numpad 1

No

No

No

No

+ K

Numpad 2

No

No

No

No

+ L

Numpad 3

No

No

No

No

+ U

Numpad 4

No

No

No

No

+ I

Numpad 5

No

No

No

No

+ O

Numpad 6

No

No

No

No

+ 7

Numpad 7

No

No

No

No

+ 8

Numpad 8

No

No

No

No

+ 9

Numpad 8

No

No

No

No

+ ;

Numpad +

No

No

No

No

+ P

Numpad -

No

No

No

No

+ 0

Numpad *

No

No

No

No

+ /

Numpad /

No

No

No

No

Notes

3D works with the nvidia restricted drivers, makes suspend happen much faster than xorg nv driver, and improves video performance. The device section of xorg.conf looks like this:

Section "Device"

  • Identifier "Configured Video Device"
  • Driver "nvidia"
  • Option "NoLogo" "True"

  • Option "RenderAccel" "True"

  • Option "AllowGLXWithComposite" "True"
  • Option "UseDisplayDevice" "DFP"

  • Option "NvAGP" "1"

EndSection

The "NvAGP" "1" line is needed to avoid a blank display when coming out of suspend. Also, Option "AddARGBBGLXVisuals" "True" should go in section "Screen" of xorg.conf.

Do *not* put any input device sections in the xorg.conf file (keyboard, synaptics, etc) as X now automagically configures these with hal. Putting the synaptics driver section in explicitly causes loss of some functions. Also, the Modules and Fonts sections are not needed, as X loads the usual defaults already.

LaptopTestingTeam/Old/DellLatitudeC840 (last edited 2010-02-24 14:44:45 by host58-172-dynamic)