U2414H (three), Sapphire R9 390, Windows 10, PSM issues

Question

Hi - Firstly, I don't know if this is a monitor issue or a windows 10 configuration issue, but i gathered this would be the best place to post it since I'm not sure!   So, i have 3x Dell u2414h monitors (had them for a couple years now - and this problem has been around since I've owned them - just never bothered to do anything about it until now.)   So, when i lock my pc, it takes me to the lock screen, then around 30 seconds later, my 3 monitors go black but only 1 has a message saying 'Entering Power Saving Mode'   1 monitor (the one plugged into the far right off the Graphics Card) will always fully go into power saving mode - like its supposed to 2 monitors will then go black (so the backlight is still on, but obviously with no picture)   The monitors always come back to life the way they're supposed to when i 'wake' the machine.   GPU is a Sapphire R9 390 - if this is of any importance

Gaza1994 · Answer

Hi - thanks for your reply.   Yes the main monitor is the one that goes into power save mode correctly.   And yes, all 3 are using DP

Dell-MickM · Answer

Hi Gaza1994,

This sounds like it could be a configuration or GPU driver issue from the way it has been described.

Is the screen that goes into power save mode your main monitor as selected in Display Settings > Multiple Displays?

Are all the monitors using DisplayPort?

Thanks,

Mick.

DELL-Chris M · Answer

We need more data...

* Left U2414H 20 digit serial number and A0x revision
* Center U2414H 20 digit serial number and A0x revision
* Right U2414H 20 digit serial number and A0x revision
* List all of the video out ports on the Sapphire R9 390
* Test each U2414H by itself on every Sapphire R9 390 video out port to try to ascertain if the PSM issue is a specific U2414H or a specific Sapphire R9 390 video out port

Monitors

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