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Open the Windows Display Properties and go to Multiple Displays control to set the display to the extended mode. HBR2 is DP 1.2 (5.4 Gbps maximum link rate per lane). With DP overhead, the effective data rate is 4.3 Gbps per lane
Dell WD19TBS 180W Thunderbolt Docking Station - Laptops Direct
Reset the monitor to Factory Defaults. See the User Guide of your monitor for more information about how to reset the monitor to factory defaults.
External monitors require a certain amount of bandwidth to work properly. Monitors with higher resolution require more bandwidth. Connectivity:multipule portsincludings audio, video, power and data as well as connections to system peripherals. NOTE: To learn more about what type of USB-C port is available on your laptop, see the User Guide of the laptop. When enabled, this setting allows PCIe devices that are connected through a Thunderbolt adapter (that is PCIe devices behind the Thunderbolt adapter) to perform the PCIe device’s UEFI Option ROMs (if present) during preboot. Secure Connect - Allow one-time saved key devices at a minimum - the CM requests connection approval from the host SW and autoapproval is only given if the host challenge to the device is acceptable.
Dell Thunderbolt Dock - WD19TB | Documentation Support for Dell Thunderbolt Dock - WD19TB | Documentation
For compatibility, you’ll need to make sure your chosen Thunderbolt will work with the devices you have.If the Display Port Data Rate is HBR2 then the maximum resolution that Linux supports is 8192 x 8192 (counted with integrated display plus external display). When it comes to ports, advances in technology have made things a little complicated. You’ll see both USB-A and USB-C ports advertised, as well as the rating of USB 3 and USB 2. These are standards applied to data transfers, and both USB-C and USB 3 are newer. You’ll recognize USB-C by its smaller port size, as seen on newer computers and mobile devices. USB-A is the type you’ve seen for years, with a larger port on both the devices and the cables you plug into them.