10-22-2019 07:32 PM
Please help. I have HP EliteBook 830 G5 connected to USB-C G4 port replicator which connected to to HP Z32 4K UHD display.
Monitor works only in 30 Hz in 4K resolution. Monitor menu show optimal resilution as 60Hz but it set to 30Hz.
I connect monitor with certified HP DisplayPort cable HP 917463-0011850 (HOTRON E246588).
BIOS, video driver and dock firmare updated to latest but refresh rate still only 30 HZ.
But.. when I connect monitor with Thunderbolt cable directly to the laptop it works in 60Hz
Please give me advise .
Solved! Go to Solution.
10-22-2019 09:34 PM
The dock supports
Up to 3840 x 1440 at 60 Hz
Up to 1920 x 1200 at 60 Hz
Up to 1680 x 1050 at 60 Hz
The simple math answer: The monitor has 3840 x 2160 @ 60Hz native resolution therefore to display UHD (4K) on the monitor, the dock will reduce the refresh rate and next available rate is 30Hz
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