Dell Latitude 3420
| Hardware | PCI/USB ID | Working? |
|---|---|---|
| Touchpad | Yes | |
| Keyboard | Yes | |
| GPU | 8086:9a49 |
Yes |
| Webcam | 0c45:6d1a |
Yes |
| Microphone | Yes | |
| Ethernet | 10ec:8168 |
Yes |
| Wifi | 8086:a0f0 |
Yes |
| Bluetooth | 8087:0026 |
Yes |
| SD-card reader | Untested | |
| Audio | 8086:a0c8 |
Yes |
| Fingerprint reader | 27c6:639c |
Untested |
| TPM | Untested |
Performance
This device can be throttled and have very bad performance, even if setting on BIOS the Ultra Performance option.
Installing and enabling thermald seems to fix the issue, allowing the processor to reach higher speeds, while also running on higher CPU temperature.
Accessibility
The appearance of the BIOS is pretty simple and not very colorful, so it might work well with OCR software. However, it requires the user to use a mouse.
Note: Blind users should request the help of a sighted person to change firmware settings.
- System Setup :
F2 - Boot Menu:
F12
From the official manual see Navigation keys.
Firmware
fwupd supports update for those devices:
- Touchpad
- Fingerprint sensor
- NVMe drive
- System firmware
- TPM
- UEFI device firmware
- USB host controller
Video
For better video support install xf86-video-intel, mesa, vulkan-intel.
Audio
Sound and microphone requires the installation of sof-firmware to work, else no card / output device will be detected, see ALSA firmware.
Function keys
| Key | Visible?1 | Marked?2 | Effect |
|---|---|---|---|
Fn+Esc |
No | Yes | Enables Fn lock |
Fn+F1 |
Yes | Yes | XF86AudioMute
|
Fn+F2 |
Yes | Yes | XF86AudioLowerVolume
|
Fn+F3 |
Yes | Yes | XF86AudioRaiseVolume
|
Fn+F4 |
Yes | Yes | XF86AudioPlay
|
Fn+F5 |
Yes | Yes | Enables/disables keyboard backlight |
Fn+F6 |
Yes | Yes | XF86MonBrightnessDown
|
Fn+F7 |
No | Yes | XF86MonBrightnessUp
|
Fn+F8 |
Yes | Yes | Inputs Super+p
|
Fn+F9 |
No | No | Unmarked keybinds |
Fn+F10 |
Yes | Yes | PrintScreen
|
Fn+F11 |
Yes | Yes | Home
|
Fn+F12 |
Yes | Yes | End
|
Fn+Right Ctrl |
No | Yes | Contextual menu |
Fn+Up |
Yes | Yes | PageUp
|
Fn+Down |
Yes | Yes | PageDown
|
- The key is visible to
xevand similar tools - The physical key has a symbol on it, which describes its function