topic Re: Dual screens randomly twitch to black for 2-5 seconds in Graphics

Dual screens randomly twitch to black for 2-5 seconds

RickF — Wed, 13 Nov 2024 20:24:00 GMT

I have dual screens. They each randomly twitch to black for 1-5 seconds. Not at the same time

Re: Dual screens randomly twitch to black for 2-5 seconds

MUC — Wed, 13 Nov 2024 22:39:30 GMT

To make an assessment possible, please provide the make and model of your computer, the make and model of your monitors, and the manufacturer and type (USB-C/DisplayPort/HDMI) of cables you are using.

Re: Dual screens randomly twitch to black for 2-5 seconds

RickF — Thu, 14 Nov 2024 14:20:25 GMT

Dell Optiplex 7010
Processor 13th Gen Intel(R) Core(TM) i7-13700 2.10 GHz
Installed RAM 32.0 GB (31.7 GB usable)
System type 64-bit operating system, x64-based processor

Edition Windows 11 Pro
Version 23H2
Installed on ‎12/‎19/‎2023
OS build 22631.4460
Experience Windows Feature Experience Pack 1000.22700.1047.0

Monitors - 2xSamsung LF27T450F

Cables - DP to HDMI

Re: Dual screens randomly twitch to black for 2-5 seconds

MUC — Thu, 14 Nov 2024 18:27:17 GMT

Samsung F27T45
1920 x 1080 @ 75 Hz
2 x HDMI 1.4, 1 x DisplayPort 1.2

If your Dell PC has two DisplayPort outputs, I would recommend connecting the two monitors with a DisplayPort cable each to have a straight connection. And please then set up the monitors in the On Screen Display menu as follows:

Re: Dual screens randomly twitch to black for 2-5 seconds

RickF — Thu, 14 Nov 2024 18:42:39 GMT

I believe that's how I have it setup. I have two DPs. Each monitor is connected with a DP to HDMI cable. If that's not the same, can you break it down simpler for me?

Re: Dual screens randomly twitch to black for 2-5 seconds

n_scott_pearson — Thu, 14 Nov 2024 19:18:21 GMT

Have you verified that the firmware for the DP-to-HDMI cables is the latest? If it's not, I would be updating it as this would be the usual cause of HDMI connection loss issues (which is what you are seeing).

[Aside: I don't recommend purchasing DP-to-HDMI cables that do not have the ability to have their firmware updated.]

Hope this helps,

...S

Re: Dual screens randomly twitch to black for 2-5 seconds

RickF — Thu, 14 Nov 2024 19:36:10 GMT

I never heard of cables with firmware. I have to assume mine do not.

Re: Dual screens randomly twitch to black for 2-5 seconds

n_scott_pearson — Thu, 14 Nov 2024 20:07:44 GMT

Every one of these cables has a processor that is performing the protocol conversion from DisplayPort to HDMI and most of these implement this protocol conversion using embedded firmware. It is a question of whether or not a particular cable has a method for updating this firmware and is making firmware upgrades available as issues are identified.

...S

Re: Dual screens randomly twitch to black for 2-5 seconds

RickF — Thu, 14 Nov 2024 20:30:21 GMT

Understood. These are from a company called UNI. From amazon. How would I know/confirm that the firmware could be updated?

Re: Dual screens randomly twitch to black for 2-5 seconds

n_scott_pearson — Thu, 14 Nov 2024 20:38:48 GMT

I went to their site (https://uniaccessories.com/) to check, but didn't see any support for firmware download/upgrade. You could try contacting their tech. support and see if they have any guidance for this.

...S

Re: Dual screens randomly twitch to black for 2-5 seconds

MUC — Thu, 14 Nov 2024 23:18:25 GMT

Please use cables that have a DisplayPort connector on both ends.

Re: Dual screens randomly twitch to black for 2-5 seconds

RickF — Fri, 15 Nov 2024 13:55:18 GMT

OK. I will try that. Thank you for the diagram.

Re: Dual screens randomly twitch to black for 2-5 seconds

RickF — Tue, 17 Dec 2024 14:28:44 GMT

I ordered DP to DP cables and the issues in now fixed. Thank you

Re: Dual screens randomly twitch to black for 2-5 seconds

RickF — Tue, 17 Dec 2024 14:29:12 GMT

This worked. Thank you