Dell Precision 7680 Manual de instrucciones

Precision 7680

External Display Connection Guide

Regulatory Model: P114F

Regulatory Type: P114F002

March 2023

Rev. A00

Notes, cautions, and warnings

NOTE: A NOTE indicates important information that helps you make better use of your product.

CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid

the problem.

WARNING: A WARNING indicates a potential for property damage, personal injury, or death.

subsidiaries. Other trademarks may be trademarks of their respective owners.

Chapter 1: Before you begin.......................................................................................................... 4

Check the graphics options on your computer............................................................................................................ 4

External display connection mode................................................................................................................................... 4

Hybrid Graphics mode.................................................................................................................................................. 4

Hybrid Graphics mode with Direct Output.............................................................................................................. 5

Discrete Graphics Mode...............................................................................................................................................5

Turn off the internal display..............................................................................................................................................5

Chapter 2: Connect displays..........................................................................................................7

Supported Display................................................................................................................................................................7

Chapter 3: Troubleshooting...........................................................................................................9

Symptoms and solutions.................................................................................................................................................... 9

Chapter 4: Getting help and contacting Dell................................................................................. 11

Contents

Contents 3

Before you begin

You can connect up to two 4K external displays or one 8K and above display using the two Thunderbolt 4 on your Precision

7680.

Total number of displays supported:

●Two 4K external displays: 2 ports (Thunderbolt 4)

●One 8K

Before you begin, ensure that you:

●Check the graphics options on your computer

●Check the ports available on your external displays and decide the Mode of connection.

Check the graphics options on your computer

The number of external displays that are supported depends on the type of graphics card available on your computer:

●The integrated graphics card can support a maximum of 4 displays.

●The discrete graphics card can support a maximum of 4 displays.

NOTE:

●Dell Docking Station—WD19DCS display behavior follows the host the Thunderbolt 4 (USB Type-C) port.

●The HDMI 2.1 port and MFDC (MFDP) Type-C port on the WD19DCS docking station cannot support dual monitors

simultaneously.

For more information about the graphics card available on your computer, run Dell SupportAssist on your computer, or scan your

hardware at www.dell.com/support.

The following are the graphic options that may be installed in your computer:

●Intel UHD Graphics (Integrated graphics)

●NVIDIA RTX A1000 6 GB laptop GPU (Discrete graphics)

●NVIDIA RTX 2000 Ada generation laptop GPU (Discrete graphics)

●NVIDIA RTX 3500 Ada generation laptop GPU (Discrete graphics)

●NVIDIA RTX 4000 Ada generation laptop GPU (Discrete graphics)

●NVIDIA RTX 5000 Ada generation laptop GPU (Discrete graphics)

●NVIDIA GeForce RTX 4090 laptop GPU (Discrete graphics)

External display connection mode

External display connection mode that is selected in the BIOS defines the number of displays that are supported by the

computer.

External display connection modes are:

●Hybrid Graphics mode

●Hybrid Graphics mode with Direct Output

●Discrete Graphics mode

Hybrid Graphics mode

To enable Hybrid Graphics mode in the computer's BIOS:

1. Restart the system and immediately press <F2> to enter the BIOS.

2. On the BIOS screen, select Video.

4 Before you begin

3. Select Switchable Graphics.

4. Select Enable Switchable Graphics.

5. Save changes and exit the computer's BIOS.

For more information about accessing and configuring the BIOS, see the computer's Service Manual at www.dell.com/support.

Table 1. Hybrid Graphics mode

Graphic card type Supported ports

Discrete GPU ●HDMI

●USB-C (non-Thunderbolt 4)

Integrated GPU Laptop display, Two Thunderbolt 4

Hybrid Graphics mode with Direct Output

To enable Hybrid Graphics mode with Direct Output in the computer's BIOS:

1. Restart the system and immediately press <F2> to enter the BIOS.

2. On the BIOS screen, select Video.

3. Select Switchable Graphics.

4. Select Enable Switchable Graphics.

5. Select Discrete Graphics Controller Direct Output Mode.

6. Save changes and exit the computer's BIOS.

For more information about accessing and configuring the BIOS, see the computer's Service Manual at www.dell.com/support.

Table 2. Hybrid Graphics mode with Direct Output

Graphic card type Supported ports

Discrete GPU ●HDMI

●USB-C (non-Thunderbolt 4)

●Two Thunderbolts 4

Integrated GPU Laptop display

Discrete Graphics Mode

To enable Discrete Mode in the computer's BIOS:

1. Restart the system and immediately press <F2> to enter the BIOS.

2. On the BIOS screen, select Video.

3. Select Switchable Graphics.

4. Uncheck Enable Switchable Graphics.

5. Save changes and exit the computer's BIOS

For more information about accessing and configuring the BIOS, see the computer's Service Manual at www.dell.com/support.

Table 3. Discrete Graphics mode

Graphic card type Supported ports

Discrete GPU ●Laptop display

●HDMI

●USB-C (non-Thunderbolt 4)

●Two Thunderbolt 4

Turn off the internal display

There may be instances where you may want to turn off the computer's internal display to connect more external displays.

You can turn off the LCD display of your computer by using the Intel HD Graphics Command Center.

Before you begin 5

To turn off the display:

1. In the Windows search bar, type Intel Graphics Command Center and press <Enter>.

2. Accept the Intel Graphics Command Center software licence agreement.

3. On the Intel Graphics Command Center window, click Display. The list of active displays is listed under the Connected

Displays section.

4. Click the ellipsis (...) in the top-right corner of your primary display, then click Extend > Display 2.

5. Click the ellipsis (...) in the top-right corner of display 2, then click Make Display Primary.

6. Click the ellipsis (...) in the top-right corner of your computer's display, then click Disable.

6 Before you begin

Connect displays

Depending on the connectors available on your external display, you can connect the displays to the Thunderbolt 4 (USB

Type-C) ports, HDMI port, Mini DisplayPort on your computer using:

●Thunderbolt 4 cables, adapters or docking stations

●USB Type-C cables. adapters or docking stations

●HDMI cables or adapters

NOTE: To experience the full resolution supported by your external displays, use appropriate cables. For examples, use

DisplayPort or HDMI cables for 4K and above resolution.

Supported Display

Table 4. Supported display using host display port under different modes

Graphics card mode Connect to External Displays

One External Display Two External

Displays

Three External

Displays

Four External Displays

(Internal Display Off)

UMA ●HDMI: 3840 x 2160

@ 60 Hz

●HDMI: 3840 x 2160

@ 60 Hz

●Type-C: 7680 x

4320 @ 60 Hz

●HDMI: 3840 x 2160

@ 60 Hz

●Type-C: 7680 x

4320 @ 60 Hz

●Type-C: 7680 x

4320 @ 60 Hz

●HDMI: 3840 x 2160 @ 60

●Type-C: 7680 x 4320 @

60 Hz

●Type-C: 7680 x 4320 @

60 Hz

●Type-C: 7680 x 4320 @

60 Hz

Hybrid mode HDMI/Type-C: 7680 x

4320 @ 60 Hz

●HDMI: 7680 x

4320 @ 60 Hz

●Type-C: 7680 x

4320 @ 60 Hz

●HDMI: 7680 x

4320 @ 60 Hz

●Type-C: 7680 x

4320 @ 60 Hz

●Type-C: 7680 x

4320 @ 60 Hz

●HDMI: 7680 x 4320 @ 60

●Type-C: 7680 x 4320 @

60 Hz

●Type-C: 7680 x 4320 @

60 Hz

●Type-C: 7680 x 4320 @

60 Hz

Hybrid mode with

Direct Output

HDMI/Type-C: 7680 x

4320 @ 60 Hz

●HDMI: 7680 x

4320 @ 60 Hz

●Type-C: 7680 x

4320 @ 60 Hz

●HDMI: 7680 x

4320 @ 60 Hz

●Type-C: 3840 x

2160 @ 60 Hz

●Type-C: 3840 x

2160 @ 60 Hz

●HDMI: 3840 x 2160 @ 60

●Type-C: 3840 x 2160 @

60 Hz

●Type-C: 3840 x 2160 @

60 Hz

●Type-C: 3840 x 2160 @

60 Hz

Discrete Mode HDMI/Type-C: 7680 x

4320 @ 60 Hz

●HDMI: 7680 x

4320 @ 60 Hz

●Type-C: 7680 x

4320 @ 60 Hz

●HDMI: 7680 x

4320 @ 60 Hz

●Type-C: 3840 x

2160 @ 60 Hz

●Type-C: 3840 x

2160 @ 60 Hz

N/A

Connect displays 7

*When connecting using docking station, additional external displays can be connected under Hybrid mode (with Internal Display

Off).

NOTE: Discrete mode and UMA modes are disabled when additional external displays are connected using docking station.

Table 5. Supported display using docking station under Hybrid mode

Hybrid mode

TBT Dock Type-C TBT + DP + DP + HDMI/MFDP: *4k@60 Hz +

2k@60 Hz*3

●Up to 3 if internal display

●Up to 4 if internal display

off

●Connect either HDMI

or MFDP only, do not

connect both of them.

Single Cable Dock ●DP + DP + HDMI : FHD@60 Hz*3

●DP + DP + MFDP : FHD@60 Hz*3

Dual Cable Dock ●DP + DP + HDMI: 2k@60 Hz*3

●DP + DP + MFDP: 2k@60 Hz*3

Table 6. Supported display using docking station under Discrete mode

Discrete mode

TBT Dock ●DP + DP: 8K@60 Hz*1

●DP + HDMI: 4K@60 Hz*2

●MFDP/HDMI+DP1+DP2: 4K@60 Hz*3

●TBT + DP1+DP2+HDMI: 4K@60 Hz*4

●Up to 3 if internal display

●Up to 4 if internal display

off

●Connect either HDMI

or MFDP only, do not

connect both of them.

Single Cable Dock ●DP + DP: 4K@60 Hz *2

●DP + HDMI: 4K@60 Hz*2

●DP + MFDP: 4K@60 Hz*2

Dual Cable Dock ●DP + DP: 8K@60 Hz*1

●DP+DP+HDMI/MFDP: 4K@60 Hz*3

8 Connect displays

Troubleshooting

Question

When I connect an 8K display using the USB Type-C to DisplayPort adapter, the display resolution can reach to 8K, but refresh

rate cannot reach to 60 Hz.

Workaround

Connect the 8K display with the dual USB Type-C to DisplayPort adapter.

Connect the 8K display with dual cable WD19DCS dock dual DisplayPort or Host dual USB Type-C to DisplayPort adapter.

Symptoms and solutions

Table 7. NVIDIA RTX 2000 Ada GPU/ NVIDIA RTX 3500 Ada GPU Symptom and solution

Symptom Suggested solution

The Right side USB-C port display disappears when using the

Thunderbolt USB Type-C port connected to a monitor or a

dock. This issue occurs when the SBIOS graphic mode is in

Hybrid Graphics disable or Discrete Graphics Controller

Direct Output Mode.

Use the below procedure to Switch graphics mode to Hybrid

Graphics:

1. Power On the system.

2. Press F2 when the Dell logo appears on the screen.

3. System enters the BIOS setup menu, click Display on the

left pane.

4. Scroll down to view the Hybrid Graphics options.

5. Switch Off > On to Enable Hybrid Graphics.

6. Click Apply Changes.

7. On the dialogue box, select the check box to Save as

Custom User Settings.

8. Click OK.

9. Click EXIT to restart the system.

Table 8. Display scenario for NVIDIA RTX 2000 Ada GPU/ NVIDIA RTX 3500 Ada GPU on graphics mode:

Discrete Graphics Controller Direct Output Mode and Discrete Graphics mode

Monitor Plug in scenario Thunderbolt 1 (USB Type-

Thunderbolt 2 (USB Type-

Type-C port with

DisplayPort

Thunderbolt monitor or Type-

C to DP monitor (Scenario 1)

V* N/A*** V

Thunderbolt monitor or Type-

C to DP monitor (Scenario 2)

N/A V V

Thunderbolt monitor or Type-

C to DP monitor (Scenario 3)

V V X**

WD19 or Dell Dual Charge

Dock HD22Q (Scenario 1)

V N/A V

WD19 or Dell Dual Charge

Dock HD22Q (Scenario 2)

N/A V V

WD19DC (Scenario 1) V USB I/F V

WD19DC (Scenario 2) USB I/F V V

WD19TB (Scenario 1-1) V: Daisy Chain and down

stream without monitor

N/A V

Troubleshooting 9

Table 8. Display scenario for NVIDIA RTX 2000 Ada GPU/ NVIDIA RTX 3500 Ada GPU on graphics mode:

Discrete Graphics Controller Direct Output Mode and Discrete Graphics mode (continued)

Monitor Plug in scenario Thunderbolt 1 (USB Type-

Thunderbolt 2 (USB Type-

Type-C port with

DisplayPort

WD19TB (Scenario 1-2) V: Daisy Chain and down

stream with monitor

X X

WD19TB (Scenario 2-1) N/A V: Daisy Chain and down

stream without monitor

WD19TB (Scenario 2-2) X V: Daisy Chain and down

stream with monitor

●* Display

●** No Display

●*** No connect.

With Thunderbolt: NVM 40.2

10 Troubleshooting

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