2 Posts
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3939
September 1st, 2021 10:00
Cannot get 60Hz on third display
Hello, I'm using a Latitude 5300 2-1 laptop. I've got the Intel UHD 620 graphics that I know is capable of supporting three displays. The laptop is connected to the Dell WD19 dock station vis USB-C. From the dock station, I'm running a HDMI cable to my personal monitor, which is a 32" 1440p, 144Hz monitor. My personal monitor itself has its refresh rate set to 60Hz (not 144Hz). Then, I have a second monitor, which is a 22" 1080p, 60Hz that is connected from the dock station via a Displayport cable.
However, I'm not able to run the second monitor (1080p) at 60Hz. It default to 30Hz which is very annoying. I can change it in the Windows settings, but this causes my personal monitor to drop it's resolution from 1440p to 1080p (which is also annoying).
I feel like there has to be a way to run both monitors + laptop screen at 60 Hz and their respective native resolution (1440p, 1080p and 1080p).
Can anyone help me on this issue ?
Thank you very much,
Victor
jphughan
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September 1st, 2021 11:00
@vicduc The Intel 620 GPU uses DisplayPort HBR2, not HBR3. As indicated in the WD19 User Guide, with HBR2, your dual display max is 1080p 60 Hz — technically 1920x1200 60 Hz works, but 1440p + 1080p wouldn’t. That would require HBR3 support.
If your Latitude 5300 was equipped with Thunderbolt, which I think was optional on that model, you could get the WD19TB (or TBS), which with would support dual 4K 60 Hz or triple 1440p 60 Hz with that system, since it would be able to access 4x more video bandwidth. Otherwise, your best option is to connect one of the displays directly to your system so its bandwidth requirements don’t have to be met by the dock connection.
See this explainer post of mine for more about this.
vicduc
2 Posts
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September 2nd, 2021 05:00
Thank you @jphughan, I've plugged one of my display directly into the HDMI port of the laptop instead of passing by the dock station. This solved my problem.
Victor