Chapter 3: Troubleshooting; Symptoms And Solutions - Dell Precision 7680 Connection Manual

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
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.
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 monitor or Type-
C to DP monitor (Scenario 1)
Thunderbolt monitor or Type-
C to DP monitor (Scenario 2)
Thunderbolt monitor or Type-
C to DP monitor (Scenario 3)
WD19 or Dell Dual Charge
Dock HD22Q (Scenario 1)
WD19 or Dell Dual Charge
Dock HD22Q (Scenario 2)
WD19DC (Scenario 1)
WD19DC (Scenario 2)
WD19TB (Scenario 1-1)
Thunderbolt 1 (USB Type-
C)
V*
N/A
V
V
N/A
V
USB I/F
V: Daisy Chain and down
stream without monitor
Troubleshooting
Suggested solution
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.
Thunderbolt 2 (USB Type-
C)
N/A***
V
V
N/A
V
USB I/F
V
N/A
3
Type-C port with
DisplayPort
V
V
X**
V
V
V
V
V
Troubleshooting 9