RTX 4060TI Multi Monitor Refresh Rate Issue

Hello,

I have an issue setting up multiple monitors on my machine, running RTX 4060 TI. My configuration is the following:

OS: Ubuntu 22.04.4 LTS x86_64 (running XFCE X-server)
CPU: 12th Gen Intel i7-12700F (20) @ 4.800GHz
RAM: 32GB
GPU: RTX 4060 TI (nvidia-driver-550)

I have 3 1440p monitors connected with DisplayPort cables.with default refresh rate of 76 Hz each.
If I connect 1 of the displays and if I am using the default Ubuntu provided nouveau driver → I can get 75Hz on a single monitor, but it doesn’t recognize my other 2 monitors.
If I switch to the driver above (nvidia-driver 550.54.14) - I can connect all 3 monitors, but I can’t select anything above 59HZ in my Display settings nor from the Nvidia Settings app.

The difference is noticeable and I would really like to get this fixed. Any advice is welcome.

All the best,

Please run nvidia-bug-report.sh as root and attach the resulting nvidia-bug-report.log.gz file to your post.

I cannot seem to upload the file. The Web UI gets stuck at Processing Upload for 30 minutes even though the file is 244KB. Is there any specific information I can paste here as text or some other way of uploading the file :( ?

Please try to unzip and upload.

nvidia-bug-report.log (3.8 MB)
Yes, it worked ! Please find attached

The decoded EDID tells this monitor is only capable of 1440p@60Hz, 75Hz only possible on resolutions 1280x1024 and lower. I don’t know how you’ve been able to overdrive the monitor with nouveau.

Block 0, Base EDID:
  EDID Structure Version & Revision: 1.4
  Vendor & Product Identification:
    Manufacturer: BNQ
    Model: 32795
    Serial Number: 21573
    Made in: week 33 of 2022
  Basic Display Parameters & Features:
    Digital display
    Bits per primary color channel: 8
    DisplayPort interface
    Maximum image size: 53 cm x 30 cm
    Gamma: 2.20
    DPMS levels: Off
    Supported color formats: RGB 4:4:4, YCrCb 4:4:4, YCrCb 4:2:2
    First detailed timing includes the native pixel format and preferred refresh rate
  Color Characteristics:
    Red  : 0.6601, 0.3320
    Green: 0.2998, 0.6289
    Blue : 0.1474, 0.0517
    White: 0.3134, 0.3291
  Established Timings I & II:
    IBM     :   720x400    70.081663 Hz   9:5     31.467 kHz     28.320000 MHz
    DMT 0x04:   640x480    59.940476 Hz   4:3     31.469 kHz     25.175000 MHz
    DMT 0x06:   640x480    75.000000 Hz   4:3     37.500 kHz     31.500000 MHz
    DMT 0x09:   800x600    60.316541 Hz   4:3     37.879 kHz     40.000000 MHz
    DMT 0x0b:   800x600    75.000000 Hz   4:3     46.875 kHz     49.500000 MHz
    Apple   :   832x624    74.551266 Hz   4:3     49.726 kHz     57.284000 MHz
    DMT 0x10:  1024x768    60.003840 Hz   4:3     48.363 kHz     65.000000 MHz
    DMT 0x12:  1024x768    75.028582 Hz   4:3     60.023 kHz     78.750000 MHz
    DMT 0x24:  1280x1024   75.024675 Hz   5:4     79.976 kHz    135.000000 MHz
    Apple   :  1152x870    75.061550 Hz 192:145   68.681 kHz    100.000000 MHz
  Standard Timings:
    DMT 0x52:  1920x1080   60.000000 Hz  16:9     67.500 kHz    148.500000 MHz
    DMT 0x3a:  1680x1050   59.954250 Hz  16:10    65.290 kHz    146.250000 MHz
    DMT 0x53:  1600x900    60.000000 Hz  16:9     60.000 kHz    108.000000 MHz (RB)
    DMT 0x23:  1280x1024   60.019740 Hz   5:4     63.981 kHz    108.000000 MHz
    DMT 0x1c:  1280x800    59.810326 Hz  16:10    49.702 kHz     83.500000 MHz
    DMT 0x55:  1280x720    60.000000 Hz  16:9     45.000 kHz     74.250000 MHz
  Detailed Timing Descriptors:
    DTD 1:  2560x1440   59.950550 Hz  16:9     88.787 kHz    241.500000 MHz (527 mm x 296 mm)
                 Hfront   48 Hsync  32 Hback   80 Hpol P
                 Vfront    3 Vsync   5 Vback   33 Vpol N
    Display Product Serial Number: 'L8N01392019'
    Display Range Limits:
      Monitor ranges (CVT): 50-76 Hz V, 30-89 kHz H, max dotclock 270 MHz
      CVT version 1.1
      Max active pixels per line: 1920
      Supported aspect ratios: 4:3 16:9 16:10 5:4 15:9
      Preferred aspect ratio: 16:9
      Supports CVT standard blanking
      Supports CVT reduced blanking
      Supported display scaling:
        Horizontal shrink
        Horizontal stretch
        Vertical shrink
        Vertical stretch
      Preferred vertical refresh: 60 Hz
    Display Product Name: 'BenQ LCD'
  Extension blocks: 1
Checksum: 0x7c

----------------

Block 1, CTA-861 Extension Block:
  Revision: 3
  Basic audio support
  Supports YCbCr 4:4:4
  Supports YCbCr 4:2:2
  Native detailed modes: 1
  Video Data Block:
    VIC  16:  1920x1080   60.000000 Hz  16:9     67.500 kHz    148.500000 MHz (native)
    VIC  31:  1920x1080   50.000000 Hz  16:9     56.250 kHz    148.500000 MHz
    VIC   5:  1920x1080i  60.000000 Hz  16:9     33.750 kHz     74.250000 MHz
    VIC  20:  1920x1080i  50.000000 Hz  16:9     28.125 kHz     74.250000 MHz
    VIC   4:  1280x720    60.000000 Hz  16:9     45.000 kHz     74.250000 MHz
    VIC  19:  1280x720    50.000000 Hz  16:9     37.500 kHz     74.250000 MHz
    VIC   3:   720x480    59.940060 Hz  16:9     31.469 kHz     27.000000 MHz
    VIC  18:   720x576    50.000000 Hz  16:9     31.250 kHz     27.000000 MHz
    VIC   2:   720x480    59.940060 Hz   4:3     31.469 kHz     27.000000 MHz
    VIC  17:   720x576    50.000000 Hz   4:3     31.250 kHz     27.000000 MHz
    VIC   1:   640x480    59.940476 Hz   4:3     31.469 kHz     25.175000 MHz
    VIC   7:  1440x480i   59.940060 Hz  16:9     15.734 kHz     27.000000 MHz
    VIC  22:  1440x576i   50.000000 Hz  16:9     15.625 kHz     27.000000 MHz
    VIC  21:  1440x576i   50.000000 Hz   4:3     15.625 kHz     27.000000 MHz
    VIC   6:  1440x480i   59.940060 Hz   4:3     15.734 kHz     27.000000 MHz
  Audio Data Block:
    Linear PCM:
      Max channels: 2
      Supported sample rates (kHz): 96 48 44.1 32
      Supported sample sizes (bits): 24 20 16
  Speaker Allocation Data Block:
    FL/FR - Front Left/Right
  Vendor-Specific Data Block (ASUS), OUI 00-0C-6E:
    10 00                                           '..'
  Detailed Timing Descriptors:
    DTD 2:   720x480    59.940060 Hz   3:2     31.469 kHz     27.000000 MHz (527 mm x 296 mm)
                 Hfront   16 Hsync  62 Hback   60 Hpol N
                 Vfront    9 Vsync   6 Vback   30 Vpol N
    DTD 3:  1280x720    60.000000 Hz  16:9     45.000 kHz     74.250000 MHz (527 mm x 296 mm)
                 Hfront  110 Hsync  40 Hback  220 Hpol P
                 Vfront    5 Vsync   5 Vback   20 Vpol P
    DTD 4:  1280x720    50.000000 Hz  16:9     37.500 kHz     74.250000 MHz (527 mm x 296 mm)
                 Hfront  440 Hsync  40 Hback  220 Hpol P
                 Vfront    5 Vsync   5 Vback   20 Vpol P
    DTD 5:   720x576    50.000000 Hz   5:4     31.250 kHz     27.000000 MHz (527 mm x 296 mm)
                 Hfront   12 Hsync  64 Hback   68 Hpol N
                 Vfront    5 Vsync   5 Vback   39 Vpol N

Not only that !
I’ve been able to run the monitor at 75Hz with MacOs as well (tested on Macbook Pro M2 (16inch) and Macbook Pro 2021 13 inch). I bought 3 identical monitors because I am really happy with colors, refresh_rate, viewing angles etc…

This is probably the crux of the issue…

BenQ also says it’s a 60Hz Monitor, no dice.

why would nouveau allow me to use 74HZ then o.O or MacOS’s drivers. in Amazon it says it’s 76Hz.

Anyway, thank you for your help, I will try to get a screenshot and upload when I get a chance.