DisplayPort backlight stays on when windows 11 put monitors at standby (sleep)| asus PG329Q windows 11, NVidia 3090

[orestis11]

Hallo Sers  i experience this specific problem

 

When my computer is idle and turns off the monitors, all of them go blank and then the backlight turns off as expected. However, a few minutes later, one of them, the ASUS PG329Q awakens, and flashes the indication displayport, but the backlight turns on and stays on forever. All of my monitors (three of them) are connected to my GPU via DP cables. None of the other monitors presents this problem. Seems to be a very common problem for various monitor models, when the monitor is connected via DP.

Various resolution steps that I went through but did not work:

· Multiple DP cables

· DDU uninstalled NVIDIA drivers

· Multiple NVIDIA drivers

· All monitors OC settings

· All ASUS display widget settings

· Update GPU BIOS

· Unplugging USB3 cable

· Factory reset of monitor

· Reflash the latest firmware

 

For your information, I quote below reports on various similar issues for different models and brands with common ground DP connection:

Asus

https://www.reddit.com/r/Monitors/comments/hgydke/asus_pa278qv_wont_go_into_sleep_mode/

https://linustechtips.com/topic/1334859-motitor-wont-go-to-sleep-connected-to-displayport/

https://forums.tomshardware.com/threads/monitor-wont-stay-asleep-power-light-turns-back-on-but-screen-goes-black.3690392/

https://www.nvidia.com/en-us/geforce/forums/discover/252346/monitor-wont-sleep-windows-10-creators-update/

Other

https://www.youtube.com/watch?v=FI5QyNR9X_4&t=63s

https://answers.microsoft.com/en-us/windows/forum/all/primary-monitor-wont-sleep-go-black-during-power/cbc3fead-ac47-4929-959a-e99ddefae61b

https://www.reddit.com/r/MSI_Gaming/comments/i7ar61/monitor_backlight_stays_on_when_connected_via/

https://www.reddit.com/r/ZOTAC/comments/ke2es6/3060ti_displayport_monitor_backlight/

https://community.acer.com/en/discussion/632743/vg280k-backlight-turns-on-and-off-forever-via-displayport-when-monitor-sleeps

https://dough.community/t/backlight-stays-on-when-i-put-computer-to-sleep/30906

 

I tried and i failed to update the GOP firmware at my inno3d 3090

via this tool

AMD and Nvidia GOP update (No requests, DIY) - BIOS/UEFI Modding / BIOS Modding Guides and Problems - Win-Raid Forum (level1techs.com)

and this

GOP Update and Extraction Tool (NVIDIA Only) - BIOS/UEFI Modding / BIOS Modding Guides and Problems - Win-Raid Forum (level1techs.com)

 

with the same result Invalid firmware detected

PS:

Interesting finding

 

when I am logon in windows, and I swap.

display port cables between monitors the "problematic" monitor seeps correctly and the other one

has the problem now after I restart my pc the problem reset to the ASUS monitor

 

if anyone can modify my bios with new GOP i  will be thankfully VGA Bios Collection: Inno3D RTX 3090 24 GB | TechPowerUp

 

Any other suggestions will be appreciated  

 

 

ASUS PG329Q monitor
win11 22H2 build 22621.2215
mainboard ProArt X670E-CREATOR BIOS :1602
PG329Q firmware v036

inno3d rtx3090 bios 94.02.59.00.DD GOP 0x6000a

nvidia 537.13

[Applefreak]

1 hour ago, orestis11 said:

Hallo Sers  i experience this specific problem

 

When my computer is idle and turns off the monitors, all of them go blank and then the backlight turns off as expected. However, a few minutes later, one of them, the ASUS PG329Q awakens, and flashes the indication displayport, but the backlight turns on and stays on forever. All of my monitors (three of them) are connected to my GPU via DP cables. None of the other monitors presents this problem. Seems to be a very common problem for various monitor models, when the monitor is connected via DP.

Various resolution steps that I went through but did not work:

· Multiple DP cables

· DDU uninstalled NVIDIA drivers

· Multiple NVIDIA drivers

· All monitors OC settings

· All ASUS display widget settings

· Update GPU BIOS

· Unplugging USB3 cable

· Factory reset of monitor

· Reflash the latest firmware

 

For your information, I quote below reports on various similar issues for different models and brands with common ground DP connection:

Asus

https://www.reddit.com/r/Monitors/comments/hgydke/asus_pa278qv_wont_go_into_sleep_mode/

https://linustechtips.com/topic/1334859-motitor-wont-go-to-sleep-connected-to-displayport/

https://forums.tomshardware.com/threads/monitor-wont-stay-asleep-power-light-turns-back-on-but-screen-goes-black.3690392/

https://www.nvidia.com/en-us/geforce/forums/discover/252346/monitor-wont-sleep-windows-10-creators-update/

Other

https://www.youtube.com/watch?v=FI5QyNR9X_4&t=63s

https://answers.microsoft.com/en-us/windows/forum/all/primary-monitor-wont-sleep-go-black-during-power/cbc3fead-ac47-4929-959a-e99ddefae61b

https://www.reddit.com/r/MSI_Gaming/comments/i7ar61/monitor_backlight_stays_on_when_connected_via/

https://www.reddit.com/r/ZOTAC/comments/ke2es6/3060ti_displayport_monitor_backlight/

https://community.acer.com/en/discussion/632743/vg280k-backlight-turns-on-and-off-forever-via-displayport-when-monitor-sleeps

https://dough.community/t/backlight-stays-on-when-i-put-computer-to-sleep/30906

 

I tried and i failed to update the GOP firmware at my inno3d 3090

via this tool

AMD and Nvidia GOP update (No requests, DIY) - BIOS/UEFI Modding / BIOS Modding Guides and Problems - Win-Raid Forum (level1techs.com)

and this

GOP Update and Extraction Tool (NVIDIA Only) - BIOS/UEFI Modding / BIOS Modding Guides and Problems - Win-Raid Forum (level1techs.com)

 

with the same result Invalid firmware detected

PS:

Interesting finding

 

when I am logon in windows, and I swap.

display port cables between monitors the "problematic" monitor seeps correctly and the other one

has the problem now after I restart my pc the problem reset to the ASUS monitor

 

if anyone can modify my bios with new GOP i  will be thankfully VGA Bios Collection: Inno3D RTX 3090 24 GB | TechPowerUp

 

Any other suggestions will be appreciated  

 

 

ASUS PG329Q monitor
win11 22H2 build 22621.2215
mainboard ProArt X670E-CREATOR BIOS :1602
PG329Q firmware v036

inno3d rtx3090 bios 94.02.59.00.DD GOP 0x6000a

nvidia 537.13

Check your cables, replace one if it acts up. If it's a port on the GPU, bad luck. Why not just turn the monitor off and save yourself some braincells?