Solved Strange Monitor Behaviour and a Question


Catnip

Catnip

Forum Nitwit
Power User
VIP
Local time
2:16 AM
Posts
800
OS
Win 11 Pro 25H2
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 My Computer

At a glance

Win 11 Pro 25H2Intel i7 13700KF32 GB Team Group DDR5 - 6000 CL 30ASUS TUF GAMING RTX 3070 Ti
OS
Win 11 Pro 25H2
Computer type
PC/Desktop
Manufacturer/Model
Self build
CPU
Intel i7 13700KF
Motherboard
Gigabyte Z790 UD AC
Memory
32 GB Team Group DDR5 - 6000 CL 30
Graphics Card(s)
ASUS TUF GAMING RTX 3070 Ti
Sound Card
On board Realtek
Monitor(s) Displays
ACER 34 inch
Screen Resolution
4K
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 My Computers

System One System Two

  • At a glance

    Win 11 Home ♦♦♦26200.8655 ♦♦♦♦♦♦♦25H2AMD Ryzen 7 3700XG.Skill (F4-3200C14D-16GTZKW)EVGA RTX 2070 (08G-P4-2171-KR)
    OS
    Win 11 Home ♦♦♦26200.8655 ♦♦♦♦♦♦♦25H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    Built by Ghot® [May 2020]
    CPU
    AMD Ryzen 7 3700X
    Motherboard
    Asus Pro WS X570-ACE (BIOS 5302)
    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 Total Security
    Other Info
    Speakers: Klipsch Pro Media 2.1

  • At a glance

    Windows XP Pro 32bit w/SP3AMD Athlon 64 X2 5000+ (OC'd @ 3.2Ghz)TWIN2X2048-6400C4DHX (2 x 1GB, DDR2 800)EVGA 256-P2-N758-TR GeForce 8600GT SSC
    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
    Keyboard
    Logitech Classic Keybooard 200
    Mouse
    Logitech Optical M-BT96a
    Internet Speed
    300/300
    Browser
    Firefox 3.x ??
    Antivirus
    Symantec (Norton)
    Other Info
    Still assembled, still runs. Haven't turned it on for 15 years?

My Computer My Computer

At a glance

Win 11 Pro 25H2Intel i7 13700KF32 GB Team Group DDR5 - 6000 CL 30ASUS TUF GAMING RTX 3070 Ti
OS
Win 11 Pro 25H2
Computer type
PC/Desktop
Manufacturer/Model
Self build
CPU
Intel i7 13700KF
Motherboard
Gigabyte Z790 UD AC
Memory
32 GB Team Group DDR5 - 6000 CL 30
Graphics Card(s)
ASUS TUF GAMING RTX 3070 Ti
Sound Card
On board Realtek
Monitor(s) Displays
ACER 34 inch
Screen Resolution
4K
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 My Computers

System One System Two

  • At a glance

    Win 11 Home ♦♦♦26200.8655 ♦♦♦♦♦♦♦25H2AMD Ryzen 7 3700XG.Skill (F4-3200C14D-16GTZKW)EVGA RTX 2070 (08G-P4-2171-KR)
    OS
    Win 11 Home ♦♦♦26200.8655 ♦♦♦♦♦♦♦25H2
    Computer type
    PC/Desktop
    Manufacturer/Model
    Built by Ghot® [May 2020]
    CPU
    AMD Ryzen 7 3700X
    Motherboard
    Asus Pro WS X570-ACE (BIOS 5302)
    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 Total Security
    Other Info
    Speakers: Klipsch Pro Media 2.1

  • At a glance

    Windows XP Pro 32bit w/SP3AMD Athlon 64 X2 5000+ (OC'd @ 3.2Ghz)TWIN2X2048-6400C4DHX (2 x 1GB, DDR2 800)EVGA 256-P2-N758-TR GeForce 8600GT SSC
    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
    Keyboard
    Logitech Classic Keybooard 200
    Mouse
    Logitech Optical M-BT96a
    Internet Speed
    300/300
    Browser
    Firefox 3.x ??
    Antivirus
    Symantec (Norton)
    Other Info
    Still assembled, still runs. Haven't turned it on for 15 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 Computers My Computers

System One System Two

  • At a glance

    Windows 11 / Linux Minti9-12900k32 GB DDR4Strix RTX 3060
    OS
    Windows 11 / Linux Mint
    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
    upHere D6SEC CPU Cooler
    Keyboard
    Logitech G213
    Mouse
    Logitech G305
    Internet Speed
    1Gbit/100mb
    Browser
    Firefox
    Antivirus
    Microsoft
    Other Info
    Bluray optical writer drive

  • At a glance

    SpartaDOS6502CUltimate 1MBSophia 2
    Operating System
    SpartaDOS
    Computer type
    PC/Desktop
    Manufacturer/Model
    Atari 600XL
    CPU
    6502C
    Memory
    Ultimate 1MB
    Graphics card(s)
    Sophia 2
    Monitor(s) Displays
    Sony MFM-HT95
    Screen Resolution
    320x200
    Hard Drives
    SIDE3
    PSU
    USB
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 My Computer

At a glance

Win 11 Pro 25H2Intel i7 13700KF32 GB Team Group DDR5 - 6000 CL 30ASUS TUF GAMING RTX 3070 Ti
OS
Win 11 Pro 25H2
Computer type
PC/Desktop
Manufacturer/Model
Self build
CPU
Intel i7 13700KF
Motherboard
Gigabyte Z790 UD AC
Memory
32 GB Team Group DDR5 - 6000 CL 30
Graphics Card(s)
ASUS TUF GAMING RTX 3070 Ti
Sound Card
On board Realtek
Monitor(s) Displays
ACER 34 inch
Screen Resolution
4K
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
You must log in or register to reply here.

Similar threads

Multiple monitor behavior - I cannot Alt-Tab to, close, minimize or maximize a window on a monitor no longer connected, open windows are orphaned
Replies
12
Views
961
dacrone
dacrone

Latest Support Threads

Latest Tutorials

Back
Top Bottom