Lenovo ThinkPad T520
Hardware | PCI/USB ID | Working? |
---|---|---|
Bluetooth | 0a5c:217f |
Yes |
Webcam | 04f2:b217 |
Yes |
Ethernet | 8086:1502 |
Yes |
WLAN (Intel) | 8086:0084 |
Yes |
8086:0085 |
Yes | |
8086:4238 |
Yes | |
WLAN (Realtek) | 10ec:8176 |
Yes |
WWAN | 0bdb:1911 |
Untested |
GPU (Intel) | 8086:0116 |
Yes |
8086:0126 |
Yes | |
GPU (NVIDIA) | 10de:1057 |
Yes |
Touchpad | Yes | |
Trackpoint | Yes | |
Keyboard | Yes | |
Fingerprint reader | 147e:2016 |
Untested |
Smart card reader | 17ef:1003 |
Untested |
SD card reader | 1180:e822 |
Untested |
1180:e823 |
Yes | |
Audio | 8086:1c20 |
Yes |
The larger 15-inch variant of the Lenovo ThinkPad T420.
Accessibility
The appearance of the ThinkPad Setup program (i.e., the tool used to configure UEFI BIOS settings) is simple and uses contrasting colours, so it may work well with OCR software. A legend of keyboard navigation shortcuts is also clearly listed on the bottom of the screen.
The user guide has a section under Chapter 8, "Advanced configuration", titled "ThinkPad Setup" that highlights the steps need to configure the UEFI BIOS settings. Relevant keyboard shortcuts (including those needed to trigger certain features on device startup) are also mentioned throughout:
Key | Effect |
---|---|
ThinkVantage |
Interrupt normal startup and bring up the Startup menu |
F1 |
Start the ThinkPad Setup program |
F12 |
Bring up the Boot Menu window |
Firmware
fwupd does not support this device yet.
Graphics
Selecting the graphics device
(This section only applies if your laptop also comes with the NVIDIA graphics card.)
Selecting a graphics device can be done by entering the ThinkPad Setup program and selecting one of the following options from Config > Display > Graphics Device:
- Integrated Graphics
- Discrete Graphics
- NVIDIA Graphics
See Intel graphics, NVIDIA, and NVIDIA Optimus or Bumblebee for more details.
- The DisplayPort will not work in Integrated Graphics mode since it is hardwired to the NVIDIA graphics card. One of the other modes must be used to make the DisplayPort available.
- A maximum of one external monitor can be used in Discrete Graphics mode since the NVIDIA (discrete) graphics card can only drive two screens at most (including the laptop's built-in screen). NVIDIA Optimus can be selected instead for configurations with more than one external monitor.
- OS Detection for NVIDIA Optimus must also be set to Disabled if you want to use NVIDIA Optimus.
Screen freeze in Discrete Graphics mode
In Discrete Graphics mode, GRUB's framebuffer can freeze the screen before the login prompt appears. Disabling the framebuffer resolves this issue.
Touchpad
libinput does not support horizontal edge scrolling on the T520's touchpad.
Function keys
Key | Visible?1 | Marked?2 | Effect |
---|---|---|---|
Fn |
Yes | No | XF86Wakeup
|
Fn+F2 |
Yes | Yes | XF86ScreenSaver
|
Fn+F3 |
Yes | Yes | XF86Battery
|
Fn+F4 |
Yes | Yes | XF86Sleep
|
Fn+F5 |
Yes | Yes | XF86WLAN
|
Fn+F6 |
Yes | Yes | XF86WebCam
|
Fn+F7 |
Yes | Yes | XF86Display
|
Fn+F8 |
Yes | Yes | XF86TouchpadToggle
|
Fn+F9 |
Yes | NoSymbol
| |
Fn+F12 |
Yes | Yes | XF86Suspend
|
Fn+PageUp |
No | Yes | Toggles the ThinkLight |
Fn+Home |
Yes | Yes | XF86MonBrightnessUp
|
Fn+End |
Yes | Yes | XF86MonBrightnessDown
|
Fn+Space |
No | Yes | None |
Fn+PrintScreen |
Yes | Yes | Alt_L Alt_L+Sys_Req
|
Fn+ScrollLock |
Yes | Yes | Num_Lock
|
Fn+Pause |
Yes | Yes | Control_L+Break
|
Fn+Down |
Yes | Yes | XF86AudioPlay
|
Fn+Up |
Yes | Yes | XF86AudioStop
|
Fn+Right |
Yes | Yes | XF86AudioNext
|
Fn+Left |
Yes | Yes | XF86AudioPrev
|
- The key is visible to
xev
and similar tools. - The physical key has a symbol on it, which describes its function.
Fn+ScrollLock
even once (to toggle Num Lock) will cause subsequent Fn+ScrollLock
key presses to become invisible to xev
and similar tools until the system is rebooted. Fn
once keeps the key in a pressed condition, similar to sticky keys. Pressing Fn
twice will keep it in a locked stated until Fn
is pressed again.See also
- https://www.thinkwiki.org/wiki/Category:T520 — Contains extensive and useful hardware information
- Product Specifications Reference (PSREF) — See pages 420–431 for the ThinkPad T520, T520i
- Hardware maintenance manual
- User guide