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Zorluk: ZorDisplay Cables and Connectors

A technician is setting up a high-performance workstation connected to a 2560×14402560 \times 1440 resolution monitor operating at 60 Hz. The graphics card output panel contains a DVI-D Dual-Link port, an HDMI 1.4 port, and a DisplayPort 1.2 port. When the technician connects the workstation to the monitor using a DVI cable, the display maximum resolution is capped at 1920×12001920 \times 1200 at 60 Hz, and the native 2560×14402560 \times 1440 resolution cannot be selected in the operating system. Which of the following is the MOST likely cause of this issue?

  1. The technician used a Single-Link DVI-D cable, which lacks the additional pins and bandwidth required to support resolutions above 1920×12001920 \times 1200 at 60 Hz.Cevap
  2. B
    The technician connected a DVI-I cable to a digital-only port, forcing the graphics card to drop to legacy analog resolution limits.
  3. C
    The workstation motherboard requires DisplayPort Alt Mode over USB Type-C to be enabled before DVI ports can output resolutions higher than 1080p.
  4. D
    DVI technology natively lacks support for digital signals, requiring an active analog-to-digital converter to output resolutions above 1920×12001920 \times 1200.

Cevap

The technician used a Single-Link DVI-D cable, which lacks the additional data pins and bandwidth needed for resolutions higher than 1920x1200 at 60 Hz.
Single-Link DVI cables use a single TMDS link supporting a maximum data rate of 3.96 Gbps3.96\text{ Gbps}, which caps resolution at 1920×12001920 \times 1200 at 60 Hz. To drive 2560×14402560 \times 1440 resolution over DVI, a Dual-Link DVI cable is required because it activates a second TMDS link utilizing 24 signal pins to double available bandwidth.

Adım Adım Çözüm

1
Analyze the reported symptom and requested resolution
The target resolution is 2560×14402560 \times 1440 at 60 Hz, but the system caps out at 1920×12001920 \times 1200 at 60 Hz when connected over a DVI cable.
Resolutions up to 1920×12001920 \times 1200 at 60 Hz match the exact maximum transmission limit of a Single-Link DVI cable.
2
Compare Single-Link vs. Dual-Link DVI specifications
Single-Link DVI uses one TMDS transmitter (3.96 Gbps3.96\text{ Gbps} limit, 12 signal pins). Dual-Link DVI uses two TMDS transmitters (7.92 Gbps7.92\text{ Gbps} limit, 24 signal pins) to enable resolutions up to 2560×16002560 \times 1600.
Using a Single-Link DVI cable on a Dual-Link DVI port physically limits bandwidth to Single-Link speeds, preventing 2560×14402560 \times 1440 mode from appearing in the OS.
3
Select the correct solution
Replacing the cable with a Dual-Link DVI-D cable (or switching to DisplayPort 1.2) will resolve the resolution cap.
Dual-Link DVI-D provides the necessary pin population and link bandwidth for 2560×14402560 \times 1440 resolution.

Anahtar Kavram

Single-Link vs. Dual-Link DVI Bandwidth and Pin Capabilities
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Konular

Display Cables and Connectors

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