Samsung monitor 43" at 30 hz instead of 60 Hz


I bought following display:
Samsung 43" 4K UHD (3840 × 2160) , number LS43AM700UUXEN

I can t have more than 30 hz:

Do you have any idea how to solve this?
See below results of terminal:

 xrandr -q
Screen 0: minimum 320 x 200, current 3840 x 2160, maximum 16384 x 16384
HDMI-1 disconnected (normal left inverted right x axis y axis)
HDMI-2 connected 3840x2160+0+0 (normal left inverted right x axis y axis) 1872mm x 1053mm
   3840x2160     30.00*   25.00    24.00    29.97    23.98  
   2560x1440     59.95  
   1920x1080     60.00    50.00    59.94    30.00    25.00    24.00    29.97    23.98  
   1920x1080i    60.00    50.00    59.94  
   1680x1050     59.88  
   1600x900      60.00  
   1280x1024     75.02    60.02  
   1440x900      59.90  
   1280x800      59.91  
   1152x864      75.00  
   1280x720      60.00    50.00    59.94  
   1024x768      75.03    70.07    60.00  
   832x624       74.55  
   800x600       72.19    75.00    60.32  
   720x576       50.00  
   720x576i      50.00  
   720x480       60.00    59.94  
   720x480i      60.00    59.94  
   640x480       75.00    72.81    66.67    60.00    59.94  
   720x400       70.08  
DP-1 disconnected (normal left inverted right x axis y axis)

inxi -Fxxx

  Host: alkastan-adrien Kernel: 5.15.85-1-MANJARO arch: x86_64 bits: 64
    compiler: gcc v: 12.2.0 Desktop: Xfce v: 4.18.0 tk: Gtk v: 3.24.35
    info: xfce4-panel wm: xfwm v: 4.18.0 vt: 7 dm: LightDM v: 1.32.0
    Distro: Manjaro Linux base: Arch Linux
  Type: Desktop Mobo: ASUSTeK model: H110M-R v: Rev X.0x
    serial: <superuser required> UEFI-[Legacy]: American Megatrends v: 1802
    date: 05/26/2016
  Info: dual core model: Intel Core i3-6100 bits: 64 type: MT MCP smt: enabled
    arch: Skylake-S rev: 3 cache: L1: 128 KiB L2: 512 KiB L3: 3 MiB
  Speed (MHz): avg: 800 min/max: 800/3700 cores: 1: 800 2: 800 3: 800 4: 800
    bogomips: 29608
  Flags: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3
  Device-1: Intel HD Graphics 530 vendor: ASUSTeK driver: i915 v: kernel
    arch: Gen-9 ports: active: HDMI-A-2 empty: DP-1,HDMI-A-1 bus-ID: 00:02.0
    chip-ID: 8086:1912 class-ID: 0300
  Display: x11 server: X.Org v: 21.1.6 compositor: xfwm v: 4.18.0 driver: X:
    loaded: modesetting alternate: fbdev,vesa dri: iris gpu: i915
    display-ID: :0.0 screens: 1
  Screen-1: 0 s-res: 3840x2160 s-dpi: 96 s-size: 1016x571mm (40.00x22.48")
    s-diag: 1165mm (45.88")
  Monitor-1: HDMI-A-2 mapped: HDMI-2 model: Samsung serial: 16780800
    res: 3840x2160 hz: 30 dpi: 52 size: 1872x1053mm (73.7x41.46")
    diag: 1093mm (43") modes: max: 3840x2160 min: 720x400
  API: OpenGL Message: Unable to show GL data. Required tool glxinfo
  Device-1: Intel 100 Series/C230 Series Family HD Audio vendor: ASUSTeK
    driver: snd_hda_intel v: kernel bus-ID: 00:1f.3 chip-ID: 8086:a170
    class-ID: 0403
  Sound API: ALSA v: k5.15.85-1-MANJARO running: yes
  Sound Server-1: JACK v: 1.9.21 running: no
  Sound Server-2: PulseAudio v: 16.1 running: yes
  Sound Server-3: PipeWire v: 0.3.63 running: yes
  Device-1: Realtek RTL8188CE 802.11b/g/n WiFi Adapter vendor: ASUSTeK PCE-N10
    driver: rtl8192ce v: kernel pcie: speed: 2.5 GT/s lanes: 1 port: e000
    bus-ID: 01:00.0 chip-ID: 10ec:8176 class-ID: 0280
  IF: wlp1s0 state: down mac: 9e:c2:64:97:6a:5c
  Device-2: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet
    vendor: ASUSTeK PRIME B450M-A driver: r8169 v: kernel pcie: speed: 2.5 GT/s
    lanes: 1 port: d000 bus-ID: 02:00.0 chip-ID: 10ec:8168 class-ID: 0200
  IF: enp2s0 state: up speed: 100 Mbps duplex: full mac: 38:d5:47:19:c7:a5
  Local Storage: total: 1.14 TiB used: 830.29 GiB (71.3%)
  ID-1: /dev/sda vendor: Samsung model: SSD 750 EVO 250GB size: 232.89 GiB
    speed: 6.0 Gb/s type: SSD serial: S32LNWAH838574D rev: 1B6Q scheme: GPT
  ID-2: /dev/sdb vendor: Seagate model: ST1000DM010-2EP102 size: 931.51 GiB
    speed: 6.0 Gb/s type: HDD rpm: 7200 serial: ZN1BNV99 rev: CC43 scheme: MBR
  ID-1: / size: 117.69 GiB used: 38.45 GiB (32.7%) fs: ext4 dev: /dev/sda6
  ID-1: swap-1 type: partition size: 15.59 GiB used: 1024 KiB (0.0%)
    priority: -2 dev: /dev/sda4
  System Temperatures: cpu: 30.0 C mobo: N/A
  Fan Speeds (RPM): N/A
  Processes: 230 Uptime: 59m wakeups: 0 Memory: 7.66 GiB used: 5 GiB (65.3%)
  Init: systemd v: 252 default: graphical Compilers: gcc: 12.2.0 clang: 14.0.6
  Packages: 1440 pm: pacman pkgs: 1426 pm: flatpak pkgs: 6 pm: snap pkgs: 8
  Shell: Bash v: 5.1.16 running-in: xfce4-terminal inxi: 3.3.24

Thank you!

One issue could be the cable you have.

  • 4K Support Yes, at 60Hz
  • Max Resolution (HDMI) 4096x2304@24Hz
  • Max Resolution (DP)‡ 4096x2304@60Hz
  • Max Resolution (eDP - Integrated Flat Panel)‡ 4096x2304@60Hz

What I understand, 4K@60Hz is supported, but only with DP, not HDMI.


seems like a 2.0 HDMI port/cable should work for 4K@60Hz

//EDIT 2: seems like you’re screwed though, from your motherboard manual

Integrated graphics processor - Intel® HD Graphics support
Multi-VGA output support: HDMI, DVI-D, D-Sub ports

  • Supports HDMI with maximum resolution 4096 x 2160 @24Hz / 2560 x 1600 @60Hz
  • Supports DVI-D with maximum resolution of 1920 x 1200 @ 60Hz
  • Supports D-Sub with maximum resolution 1920 x 1200 @60Hz

Supports up to 2 displays simultaneously
Maximum shared memory of 1024 MB

1 Like

So even if I change hdmi cable, motherboard can t handle it…

Thank you for information.

I think that is the issue yes. But you can try to find a known 2.0 HDMI cable around you and test, it is easy and you’ll know (manual are not usually updated with BIOS update and other changes so maybe you have a tiny chance). Maybe you already have a 2.0 HDMI cable and you already have the answer (try to check on the cable itself if there is an indication about HDMI version).