Solved Strange Monitor Behaviour and a Question


Catnip

Catnip

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278
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Win 11 Pro 23H2
Hi all. Merry Christmas! :-)

I have a Samsung 4K monitor connected to my RTX 3070 Ti through a Display Port cable, and a second 1080P monitor connected the same way. The problem is that when the computer goes into sleep mode, the backlight on the 4K monitor turns on for about five seconds, every thirty seconds or so. I have done some troubleshooting and I have found that the monitor does not do this if I hook it up to the HDMI port on the GPU. It happily sleeps. I have tried all DP ports on the GPU and the 1080 monitor does not do this.

I don't know why it does it with the DP cable, but I think my solution is to use the HDMI cable and be done with it. The only thing I am wondering about is if the HDMI connection will support 4K properly? I don't use the 4K setting very often but I do like to use it for some graphics programs. My card isn't great for gaming at 4K, but I don't care. I just need the high detail when graphics editing.

So HDMI? Or do I put up with the 4K monitor constantly waking up?
 
Windows Build/Version
23H2

My Computer

System One

  • OS
    Win 11 Pro 23H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    Self build
    CPU
    Ryzen 5800X
    Motherboard
    Gigabyte x570 Aorus Elite Wifi
    Memory
    32 GB GSkill Trident Neo with pretty LED lights
    Graphics Card(s)
    ASUS TUF GAMING RTX 3070 Ti
    Sound Card
    On board Realtek
    Monitor(s) Displays
    2 x Samsung 32 inch curved - one 4K, one 1080p
    Screen Resolution
    4K, 1920 x 1080
    Hard Drives
    1 TB Samsung 980 Pro Nvme, 1 TB Samsung 970 EVO Nvme, 2 x Samsung 970 2TB SSD SATA
    PSU
    EVGA 1000Q
    Case
    Rosewill something or other
    Cooling
    Noctua NH-D15. A whole schwak of Noctua case fans. $$$
    Keyboard
    Logitech G815
    Mouse
    Logitech G502 Hero
    Internet Speed
    700 up, 600 down
    Browser
    Firefox
    Antivirus
    MalwareBytes

My Computers

System One System Two

  • OS
    Win 11 Home ♦♦♦22631.3527 ♦♦♦♦♦♦♦23H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    Built by Ghot® [May 2020]
    CPU
    AMD Ryzen 7 3700X
    Motherboard
    Asus Pro WS X570-ACE (BIOS 4702)
    Memory
    G.Skill (F4-3200C14D-16GTZKW)
    Graphics Card(s)
    EVGA RTX 2070 (08G-P4-2171-KR)
    Sound Card
    Realtek ALC1220P / ALC S1220A
    Monitor(s) Displays
    Dell U3011 30"
    Screen Resolution
    2560 x 1600
    Hard Drives
    2x Samsung 860 EVO 500GB,
    WD 4TB Black FZBX - SATA III,
    WD 8TB Black FZBX - SATA III,
    DRW-24B1ST CD/DVD Burner
    PSU
    PC Power & Cooling 750W Quad EPS12V
    Case
    Cooler Master ATCS 840 Tower
    Cooling
    CM Hyper 212 EVO (push/pull)
    Keyboard
    Ducky DK9008 Shine II Blue LED
    Mouse
    Logitech Optical M-100
    Internet Speed
    300/300
    Browser
    Firefox (latest)
    Antivirus
    Bitdefender Internet Security
    Other Info
    Speakers: Klipsch Pro Media 2.1
  • Operating System
    Windows XP Pro 32bit w/SP3
    Computer type
    PC/Desktop
    Manufacturer/Model
    Built by Ghot® (not in use)
    CPU
    AMD Athlon 64 X2 5000+ (OC'd @ 3.2Ghz)
    Motherboard
    ASUS M2N32-SLI Deluxe Wireless Edition
    Memory
    TWIN2X2048-6400C4DHX (2 x 1GB, DDR2 800)
    Graphics card(s)
    EVGA 256-P2-N758-TR GeForce 8600GT SSC
    Sound Card
    Onboard
    Monitor(s) Displays
    ViewSonic G90FB Black 19" Professional (CRT)
    Screen Resolution
    up to 2048 x 1536
    Hard Drives
    WD 36GB 10,000rpm Raptor SATA
    Seagate 80GB 7200rpm SATA
    Lite-On LTR-52246S CD/RW
    Lite-On LH-18A1P CD/DVD Burner
    PSU
    PC Power & Cooling Silencer 750 Quad EPS12V
    Case
    Generic Beige case, 80mm fans
    Cooling
    ZALMAN 9500A 92mm CPU Cooler
    Mouse
    Logitech Optical M-BT96a
    Keyboard
    Logitech Classic Keybooard 200
    Internet Speed
    300/300
    Browser
    Firefox 3.x ??
    Antivirus
    Symantec (Norton)
    Other Info
    Still assembled, still runs. Haven't turned it on for 13 years?

My Computer

System One

  • OS
    Win 11 Pro 23H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    Self build
    CPU
    Ryzen 5800X
    Motherboard
    Gigabyte x570 Aorus Elite Wifi
    Memory
    32 GB GSkill Trident Neo with pretty LED lights
    Graphics Card(s)
    ASUS TUF GAMING RTX 3070 Ti
    Sound Card
    On board Realtek
    Monitor(s) Displays
    2 x Samsung 32 inch curved - one 4K, one 1080p
    Screen Resolution
    4K, 1920 x 1080
    Hard Drives
    1 TB Samsung 980 Pro Nvme, 1 TB Samsung 970 EVO Nvme, 2 x Samsung 970 2TB SSD SATA
    PSU
    EVGA 1000Q
    Case
    Rosewill something or other
    Cooling
    Noctua NH-D15. A whole schwak of Noctua case fans. $$$
    Keyboard
    Logitech G815
    Mouse
    Logitech G502 Hero
    Internet Speed
    700 up, 600 down
    Browser
    Firefox
    Antivirus
    MalwareBytes
Thumbs Up2.png
 

My Computers

System One System Two

  • OS
    Win 11 Home ♦♦♦22631.3527 ♦♦♦♦♦♦♦23H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    Built by Ghot® [May 2020]
    CPU
    AMD Ryzen 7 3700X
    Motherboard
    Asus Pro WS X570-ACE (BIOS 4702)
    Memory
    G.Skill (F4-3200C14D-16GTZKW)
    Graphics Card(s)
    EVGA RTX 2070 (08G-P4-2171-KR)
    Sound Card
    Realtek ALC1220P / ALC S1220A
    Monitor(s) Displays
    Dell U3011 30"
    Screen Resolution
    2560 x 1600
    Hard Drives
    2x Samsung 860 EVO 500GB,
    WD 4TB Black FZBX - SATA III,
    WD 8TB Black FZBX - SATA III,
    DRW-24B1ST CD/DVD Burner
    PSU
    PC Power & Cooling 750W Quad EPS12V
    Case
    Cooler Master ATCS 840 Tower
    Cooling
    CM Hyper 212 EVO (push/pull)
    Keyboard
    Ducky DK9008 Shine II Blue LED
    Mouse
    Logitech Optical M-100
    Internet Speed
    300/300
    Browser
    Firefox (latest)
    Antivirus
    Bitdefender Internet Security
    Other Info
    Speakers: Klipsch Pro Media 2.1
  • Operating System
    Windows XP Pro 32bit w/SP3
    Computer type
    PC/Desktop
    Manufacturer/Model
    Built by Ghot® (not in use)
    CPU
    AMD Athlon 64 X2 5000+ (OC'd @ 3.2Ghz)
    Motherboard
    ASUS M2N32-SLI Deluxe Wireless Edition
    Memory
    TWIN2X2048-6400C4DHX (2 x 1GB, DDR2 800)
    Graphics card(s)
    EVGA 256-P2-N758-TR GeForce 8600GT SSC
    Sound Card
    Onboard
    Monitor(s) Displays
    ViewSonic G90FB Black 19" Professional (CRT)
    Screen Resolution
    up to 2048 x 1536
    Hard Drives
    WD 36GB 10,000rpm Raptor SATA
    Seagate 80GB 7200rpm SATA
    Lite-On LTR-52246S CD/RW
    Lite-On LH-18A1P CD/DVD Burner
    PSU
    PC Power & Cooling Silencer 750 Quad EPS12V
    Case
    Generic Beige case, 80mm fans
    Cooling
    ZALMAN 9500A 92mm CPU Cooler
    Mouse
    Logitech Optical M-BT96a
    Keyboard
    Logitech Classic Keybooard 200
    Internet Speed
    300/300
    Browser
    Firefox 3.x ??
    Antivirus
    Symantec (Norton)
    Other Info
    Still assembled, still runs. Haven't turned it on for 13 years?
Catnip said:
Hi all. Merry Christmas! :-)

I have a Samsung 4K monitor connected to my RTX 3070 Ti through a Display Port cable, and a second 1080P monitor connected the same way. The problem is that when the computer goes into sleep mode, the backlight on the 4K monitor turns on for about five seconds, every thirty seconds or so. I have done some troubleshooting and I have found that the monitor does not do this if I hook it up to the HDMI port on the GPU. It happily sleeps. I have tried all DP ports on the GPU and the 1080 monitor does not do this.

I don't know why it does it with the DP cable, but I think my solution is to use the HDMI cable and be done with it. The only thing I am wondering about is if the HDMI connection will support 4K properly? I don't use the 4K setting very often but I do like to use it for some graphics programs. My card isn't great for gaming at 4K, but I don't care. I just need the high detail when graphics editing.

So HDMI? Or do I put up with the 4K monitor constantly waking up?
Click to expand...
Swap the DP cables between the Samsung and the 1080P monitor. Could be a bad cable.
 

My Computer

System One

  • OS
    Windows 11
    Computer type
    PC/Desktop
    Manufacturer/Model
    C.S.D.
    CPU
    i9-12900k
    Motherboard
    Gigabyte Z690 UD AX DDR4
    Memory
    32 GB DDR4
    Graphics Card(s)
    Strix RTX 3060
    Sound Card
    Onboard
    Monitor(s) Displays
    LG QNED75URA 43" TV
    Screen Resolution
    3840x2160
    Hard Drives
    One 1tb M.2 for Windows, one 500gb M.2 for Linux, and a 8 TB HDD for data
    PSU
    850 watt
    Case
    Cougar
    Cooling
    MSI liquid cooling
    Keyboard
    Cherry Stream wireless
    Mouse
    Logitech G305
    Internet Speed
    1Gbit/100mb
    Browser
    Edge
    Antivirus
    Microsoft
    Other Info
    Bluray optical writer drive
Calab said:
Swap the DP cables between the Samsung and the 1080P monitor. Could be a bad cable.
Click to expand...
I think I will give that a try before I go back to HDMI. I got the cables from Amazon and they may not be the best quality. Oddly, I have no issues when the monitor is displaying normally. Just when it is asleep.

I either have a monitor or a cable problem. Now I am determined to find out which one it is.
 

My Computer

System One

  • OS
    Win 11 Pro 23H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    Self build
    CPU
    Ryzen 5800X
    Motherboard
    Gigabyte x570 Aorus Elite Wifi
    Memory
    32 GB GSkill Trident Neo with pretty LED lights
    Graphics Card(s)
    ASUS TUF GAMING RTX 3070 Ti
    Sound Card
    On board Realtek
    Monitor(s) Displays
    2 x Samsung 32 inch curved - one 4K, one 1080p
    Screen Resolution
    4K, 1920 x 1080
    Hard Drives
    1 TB Samsung 980 Pro Nvme, 1 TB Samsung 970 EVO Nvme, 2 x Samsung 970 2TB SSD SATA
    PSU
    EVGA 1000Q
    Case
    Rosewill something or other
    Cooling
    Noctua NH-D15. A whole schwak of Noctua case fans. $$$
    Keyboard
    Logitech G815
    Mouse
    Logitech G502 Hero
    Internet Speed
    700 up, 600 down
    Browser
    Firefox
    Antivirus
    MalwareBytes
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