This looks like a cable/connection/bandwidth problem, which is a very
common type of bug report we receive, but it's not a bug. If the
graphics driver deems the current wiring can't provide enough bandwidth
then it will cull high resolutions and high refresh rates from the list.

Your laptop specs say the HDMI port is "1x HDMI® 2.1, up to 4K/60Hz". So
that's right on the edge of being able to support the monitor's
"3440x1440 100.000000 Hz".

You might be able to solve this by using a higher grade HDMI 2.1 cable.
But that might not be enough if the laptop HDMI port is part of the
problem.

The best solution I can recommend is to instead use the "2x USB-C®
(Thunderbolt™ 4 / USB4® 40Gbps), with USB PD 3.0 and DisplayPort™ 2.1"
ports. You can do that using a USB-C to DisplayPort cable.

Using the USB-C ports will have the extra bonus of not forcing every
frame to be copied from the Intel GPU to the Nvidia GPU, which is an
unfortunate part of the gnome-shell architecture. So you will get higher
frame rates too.

https://psref.lenovo.com/syspool/Sys/PDF/ThinkPad/ThinkPad_P14s_Gen_5_Intel/ThinkPad_P14s_Gen_5_Intel_Spec.pdf

** Package changed: mutter (Ubuntu) => ubuntu

** Changed in: ubuntu
       Status: New => Invalid

-- 
You received this bug notification because you are a member of Desktop
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https://bugs.launchpad.net/bugs/2103506

Title:
  Lenovo G34w-10 EDID parsing error

Status in Ubuntu:
  Invalid

Bug description:
  OS: Ubuntu 24.10 x86_64
  Host: 21G2000AMX ThinkPad P14s Gen 5
  Kernel: 6.11.0-19-generic
  Resolution: 1920x1080
  DE: GNOME 47.0
  WM: Mutter
  CPU: Intel Ultra 7 155H (22) @ 4.500
  GPU: Intel Arc Graphics]
  GPU: NVIDIA RTX 500 Ada Generation L (with nvidia driver 570)
  Monitor: Lenovo G34w-10 (firmware LS1.4) connected with HDMI

  My Lenovo G34w-10 monitor supports several resolutions, including
  3440x1440. I don't get any option to set this on my laptop.

  I've had the same problem (same display & cable) with Xorg and solved
  it by using xrandr to add a custom resolution.

  With Wayland & Mutter, I haven't found a solution.

  I decoded the EDID for the display, 3440x1440 is listed.

  edid-decode
  /sys/devices/pci0000:00/0000:00:02.0/drm/controlD65/card1-HDMI-A-1/edid

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

  Block 0, Base EDID:
    EDID Structure Version & Revision: 1.3
    Vendor & Product Identification:
      Manufacturer: LEN
      Model: 26273
      Made in: week 6 of 2021
    Basic Display Parameters & Features:
      Digital display
      Maximum image size: 80 cm x 33 cm
      Gamma: 2.20
      DPMS levels: Standby Off
      Non-RGB color display
      Default (sRGB) color space is primary color space
      First detailed timing is the preferred timing
    Color Characteristics:
      Red  : 0.6396, 0.3300
      Green: 0.2998, 0.5996
      Blue : 0.1503, 0.0595
      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 0x05:   640x480    72.808802 Hz   4:3     37.861 kHz     31.500000 MHz
      DMT 0x06:   640x480    75.000000 Hz   4:3     37.500 kHz     31.500000 MHz
      DMT 0x08:   800x600    56.250000 Hz   4:3     35.156 kHz     36.000000 MHz
      DMT 0x09:   800x600    60.316541 Hz   4:3     37.879 kHz     40.000000 MHz
      DMT 0x0a:   800x600    72.187572 Hz   4:3     48.077 kHz     50.000000 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 0x11:  1024x768    70.069359 Hz   4:3     56.476 kHz     75.000000 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
    Standard Timings:
      DMT 0x55:  1280x720    60.000000 Hz  16:9     45.000 kHz     74.250000 MHz
      DMT 0x23:  1280x1024   60.019740 Hz   5:4     63.981 kHz    108.000000 MHz
      DMT 0x2f:  1440x900    59.887445 Hz  16:10    55.935 kHz    106.500000 MHz
      DMT 0x53:  1600x900    60.000000 Hz  16:9     60.000 kHz    108.000000 
MHz (RB)
      DMT 0x3a:  1680x1050   59.954250 Hz  16:10    65.290 kHz    146.250000 MHz
      DMT 0x52:  1920x1080   60.000000 Hz  16:9     67.500 kHz    148.500000 MHz
      DMT 0x15:  1152x864    75.000000 Hz   4:3     67.500 kHz    108.000000 MHz
      GTF     :  1280x1024   69.999805 Hz   5:4     74.620 kHz    128.943000 MHz
    Detailed Timing Descriptors:
      DTD 1:  3440x1440   59.998875 Hz  43:18    88.858 kHz    319.890000 MHz 
(797 mm x 334 mm)
                   Hfront   48 Hsync  32 Hback   80 Hpol P
                   Vfront    3 Vsync   5 Vback   33 Vpol N
      Display Product Serial Number: 'UGW05HMR'
      Display Range Limits:
        Monitor ranges (GTF): 48-100 Hz V, 23-160 kHz H, max dotclock 600 MHz
      Display Product Name: 'LEN G34w-10'
    Extension blocks: 1
  Checksum: 0x20

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

  Block 1, CTA-861 Extension Block:
    Revision: 3
    Underscans IT Video Formats by default
    Basic audio support
    Supports YCbCr 4:4:4
    Supports YCbCr 4:2:2
    Native detailed modes: 3
    Video Data Block:
      VIC   1:   640x480    59.940476 Hz   4:3     31.469 kHz     25.175000 MHz
      VIC   2:   720x480    59.940060 Hz   4:3     31.469 kHz     27.000000 MHz
      VIC   3:   720x480    59.940060 Hz  16:9     31.469 kHz     27.000000 MHz
      VIC   4:  1280x720    60.000000 Hz  16:9     45.000 kHz     74.250000 MHz
      VIC   5:  1920x1080i  60.000000 Hz  16:9     33.750 kHz     74.250000 MHz
      VIC  16:  1920x1080   60.000000 Hz  16:9     67.500 kHz    148.500000 MHz 
(native)
      VIC  18:   720x576    50.000000 Hz  16:9     31.250 kHz     27.000000 MHz
      VIC  19:  1280x720    50.000000 Hz  16:9     37.500 kHz     74.250000 MHz
      VIC  20:  1920x1080i  50.000000 Hz  16:9     28.125 kHz     74.250000 MHz
      VIC  31:  1920x1080   50.000000 Hz  16:9     56.250 kHz    148.500000 MHz
      VIC  63:  1920x1080  120.000000 Hz  16:9    135.000 kHz    297.000000 MHz
    Audio Data Block:
      Linear PCM:
        Max channels: 2
        Supported sample rates (kHz): 48 44.1 32
        Supported sample sizes (bits): 24 20 16
    Speaker Allocation Data Block:
      FL/FR - Front Left/Right
    Vendor-Specific Data Block (HDMI), OUI 00-0C-03:
      Source physical address: 1.0.0.0
      DC_36bit
      DC_30bit
      DC_Y444
      Maximum TMDS clock: 330 MHz
    Vendor-Specific Data Block (HDMI Forum), OUI C4-5D-D8:
      Version: 1
      Maximum TMDS Character Rate: 600 MHz
      SCDC Present
    Vendor-Specific Data Block (AMD), OUI 00-00-1A:
      Version: 2.1
      Minimum Refresh Rate: 48 Hz
      Maximum Refresh Rate: 100 Hz
      Flags 1.x: 0xed (MCCS)
      Flags 2.x: 0x00
      Maximum luminance: 0 (50.000 cd/m^2)
      Minimum luminance: 0 (0.000 cd/m^2)
      Unknown: 0x00 0x00
    Detailed Timing Descriptors:
      DTD 2:  3440x1440  100.000000 Hz  43:18   148.100 kHz    533.160000 MHz 
(797 mm x 334 mm)
                   Hfront   88 Hsync  64 Hback    8 Hpol P
                   Vfront    4 Vsync   5 Vback   32 Vpol P
      DTD 3:  1366x768    59.789541 Hz 683:384   47.712 kHz     85.500000 MHz 
(797 mm x 334 mm)
                   Hfront   70 Hsync 143 Hback  213 Hpol P
                   Vfront    3 Vsync   3 Vback   24 Vpol P
      DTD 4:  2560x1440   60.000199 Hz  16:9     88.860 kHz    241.700000 MHz 
(797 mm x 334 mm)
                   Hfront   48 Hsync  32 Hback   80 Hpol P
                   Vfront    3 Vsync   5 Vback   33 Vpol P
      DTD 5:  3440x1440   50.000000 Hz  43:18    74.050 kHz    266.580000 MHz 
(797 mm x 334 mm)
                   Hfront   48 Hsync  32 Hback   80 Hpol P
                   Vfront    3 Vsync   5 Vback   33 Vpol N
  --------

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