Identical Monitors to the Model with identical settings(Resolution, Brightness,Etc) but one is fine and the other is brighter. HDMI-A-1 is the Right monitor and its the one thats brighter

Help
1

dumb question: for context I own two identical model monitors setup exactly same settings: resolution and physical hardware settings for brightness etc, my HDMI-A-3 looks fine but HDMI-A-1 looks brighter even though all the settings are the same. Any suggestions to best correct this?

HDMI-A-3 "Sceptre Tech Inc Sceptre F27 0x00000001 (HDMI-A-3)"
  Make: Sceptre Tech Inc
  Model: Sceptre F27
  Serial: 0x00000001
  Physical size: 600x330 mm
  Enabled: yes
  Modes:
    1920x1080 px, 60.000000 Hz (preferred, current)
    1920x1080 px, 74.973000 Hz
  Position: 0,0
  Transform: normal
  Scale: 1.000000
  Adaptive Sync: disabled

HDMI-A-1 "Sceptre Tech Inc Sceptre F27 0x00000001 (HDMI-A-1)"
  Make: Sceptre Tech Inc
  Model: Sceptre F27
  Serial: 0x00000001
  Physical size: 600x330 mm
  Enabled: yes
  Modes:
    1920x1080 px, 60.000000 Hz (preferred, current)
    1920x1080 px, 60.000000 Hz
  Position: 1920,0
  Transform: normal
  Scale: 1.000000
  Adaptive Sync: disabled

❯ doas inxi -b
System:
  Host: Mulder Kernel: 6.9.8-zen1 arch: x86_64 bits: 64
  Desktop: Hyprland v: N/A Distro: NixOS 24.11 (Vicuna)
Machine:
  Type: Desktop System: Dell product: OptiPlex 7010 v: 01 serial: 692CK02
  Mobo: Dell model: 0YXT71 v: A02 serial: /692CK02/CN722003CH02BP/
    UEFI: Dell v: A21 date: 12/21/2015
CPU:
  Info: quad core Intel Core i5-3470 [MCP] speed (MHz): avg: 3194
    min/max: 1600/3200
Graphics:
  Device-1: Intel Xeon E3-1200 v2/3rd Gen Core processor Graphics driver: i915
    v: kernel
  Device-2: AMD Lexa PRO [Radeon 540/540X/550/550X / RX 540X/550/550X]
    driver: amdgpu v: kernel
  Device-3: Logitech C920 HD Pro Webcam driver: snd-usb-audio,uvcvideo
    type: USB
  Display: server: Xwayland v: 24.1.1 driver: gpu: amdgpu,i915
    resolution: <missing: xdpyinfo/xrandr> resolution: 1: 1920x1080 2: 1920x1080
  API: EGL v: N/A drivers: N/A platforms: N/A
Network:
  Device-1: Intel 82579LM Gigabit Network driver: e1000e
  Device-2: Intel Wi-Fi 6E AX210/AX1675 2x2 [Typhoon Peak] driver: iwlwifi
Drives:
  Local Storage: total: 1.14 TiB used: 615.61 GiB (52.6%)
Info:
  Memory: total: 16 GiB available: 15.51 GiB used: 6.24 GiB (40.2%)
    igpu: 64 MiB
  Processes: 343 Uptime: 1d 1h 31m Shell: Bash inxi: 3.3.34

my dotfile GitHub - derekagraham78/zaneyos: My ZaneyOS files

2

The (non-used) modes look different, though. Are the monitors of the same age? Because both backlight aging and minor manufacturing changes not reflected in the model number are things that happen…

3

dumb suggestion: if you swap the monitor ports, or the cables, does the behaviour change?

1 Like
4

Monitors are exactly the same. I believe the factor is in the connection types used.
My AMD Radeon Rx550 only has 1 HDMI port. So I have my second monitor plugged into a DisplayPort with a DP2HDMI adapter. Sadly I don’t think I can find a GPU that would work with this computer and have 2 HDMI ports on it. I own a Dell Optiplex 7010 DT from 2012. I believe I have a 250W PSU and it has to have a half height card.

5

I am wondering how my experience would change if I invested in this GIGABYTE GeForce GTX 1650 4GB GDDR5 PCI Express 3.0 x16 MINI ITX Video Card GV-N1650IX-4GD
Sometimes running an AMD GPU along with the Intel integrated graphics is not that great. I do know it has to have a dual hdmi. What do you think?