Cant set dual 4k monitors Raspberry Pi 4

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jeremy
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Joined: Fri Aug 16, 2019 4:16 am

Cant set dual 4k monitors Raspberry Pi 4

Post by jeremy » Sat Aug 17, 2019 3:22 am

I can set a single monitor to 4k60 with hdmi_enable_4kp60=1 but this mode doesnt work for dual monitors. The pi 4 can only support 4k30 for dual monitors.

On raspian it auto detects the 4k monitors and sets it to 4k30, I cant for the life of me find a way to set it in the config file for this mode using WTware.

akatik
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Re: Cant set dual 4k monitors Raspberry Pi 4

Post by akatik » Sat Aug 17, 2019 10:13 am

Hello,Send me your terminal log to support@wtware.com
Here's the manual about making logs: http://wtware.com/logs.html

jeremy
Posts: 3
Joined: Fri Aug 16, 2019 4:16 am

Re: Cant set dual 4k monitors Raspberry Pi 4

Post by jeremy » Sat Aug 17, 2019 6:28 pm

Log sent.

cwt
Posts: 2
Joined: Wed Aug 21, 2019 9:26 am

Re: Cant set dual 4k monitors Raspberry Pi 4

Post by cwt » Wed Aug 21, 2019 9:44 am

I have a similar problem with 2x DELL 24" monitors running at 1920x1200px. Only one monitor shows a picture, the second one has a signal (backlight is enabled and the status LED is "white") but shows nothing.

Raspberry Pi4B, 1GB RAM

RPi config entry:

[HDMI:0]
hdmi_group=2
hdmi_mode=69
[HDMI:1]
hdmi_group=2
hdmi_mode=69

akatik
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Re: Cant set dual 4k monitors Raspberry Pi 4

Post by akatik » Wed Aug 21, 2019 1:37 pm

The same question: do these two monitors run in Raspbian? If so, send me your config.txt from Raspbian SD.

Also, run in Raspbian command line:

dmesg > /tmp/dmesg.txt

and send me file /tmp/dmesg.txt

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