I got a 32 inch 3840 x 2160 60Hz monitor (F32TU87).
When I connect it to my laptop via HDMI, I only get 30Hz.
I used it with a macbook as well, with HDMI and thunderbolt ports, where I get 60Hz in both cases. So we know that the monitor and HDMI cable are fine.
The linux laptop is HP ac179tx. The CPU is i5-6200U which does support 4K@60Hz. However there could be other parts in the laptop which don’t support the resolution.
I tried to force the resolution to 60Hz using xrandr as follows, but the monitor simply resets to 30Hz
xrandr -q
Screen 0: minimum 320 x 200, current 5760 x 2160, maximum 16384 x 16384
eDP-1 connected 1920x1080+0+360 (normal left inverted right x axis y axis) 344mm x 193mm
1920x1080 60.06 + 60.01* 59.97 59.96 59.93 40.04
1680x1050 59.95 59.88
1400x1050 59.98
1600x900 59.99 59.94 59.95 59.82
1280x1024 60.02
1400x900 59.96 59.88
1280x960 60.00
1440x810 60.00 59.97
1368x768 59.88 59.85
1280x800 59.99 59.97 59.81 59.91
1280x720 60.00 59.99 59.86 59.74
1024x768 60.04 60.00
960x720 60.00
928x696 60.05
896x672 60.01
1024x576 59.95 59.96 59.90 59.82
960x600 59.93 60.00
960x540 59.96 59.99 59.63 59.82
800x600 60.00 60.32 56.25
840x525 60.01 59.88
864x486 59.92 59.57
700x525 59.98
800x450 59.95 59.82
640x512 60.02
700x450 59.96 59.88
640x480 60.00 59.94
720x405 59.51 58.99
684x384 59.88 59.85
640x400 59.88 59.98
640x360 59.86 59.83 59.84 59.32
512x384 60.00
512x288 60.00 59.92
480x270 59.63 59.82
400x300 60.32 56.34
432x243 59.92 59.57
320x240 60.05
360x202 59.51 59.13
320x180 59.84 59.32
HDMI-1 connected primary 3840x2160+1920+0 (normal left inverted right x axis y axis) 698mm x 393mm
3840x2160 30.00* 29.97
2560x1440 59.95
1920x1080 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 56.25
720x576 50.00
720x480 60.00 59.94
640x480 75.00 72.81 66.67 60.00 59.94
720x400 70.08
Next I added a new mode to xrandr
xrandr --newmode "3840x2160_60.00" 712.75 3840 4160 4576 5312 2160 2163 2168 2237 -hsync +vsync
Add that mode to the monitor
xrandr --addmode HDMI-1 3840x2160_60.00
Try to set the output to this mode, and get an error
xrandr --output HDMI-1 --mode 3840x2160_60.00
xrandr: Configure crtc 0 failed
What else can I try? Could I somehow try to make it use the secondary GPU available? Is there a way I could confirm that this laptop doesn’t support 4K@60Hz?
Here are some relevant system details,
inxi -Fxxx # I removed the irrelevant sections
System:
Host: aaaa-pc Kernel: 5.15.81-1-MANJARO arch: x86_64 bits: 64
compiler: gcc v: 12.2.0 Desktop: Xfce v: 4.16.1 tk: Gtk v: 3.24.34
info: xfce4-panel wm: xfwm v: 4.16.1 vt: 7 dm: LightDM v: 1.32.0
Distro: Manjaro Linux base: Arch Linux
Machine:
Type: Laptop System: HP product: HP Notebook v: Type1ProductConfigId
serial: <superuser required> Chassis: type: 10 serial: <superuser required>
Mobo: HP model: 8136 v: 31.36 serial: <superuser required> UEFI: Insyde
v: F.1F date: 01/18/2016
CPU:
Info: dual core model: Intel Core i5-6200U bits: 64 type: MT MCP
smt: enabled arch: Skylake rev: 3 cache: L1: 128 KiB L2: 512 KiB L3: 3 MiB
Speed (MHz): avg: 800 min/max: 400/2800 cores: 1: 800 2: 800 3: 800 4: 800
bogomips: 19204
Flags: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx
Graphics:
Device-1: Intel Skylake GT2 [HD Graphics 520] vendor: Hewlett-Packard
driver: i915 v: kernel arch: Gen-9 ports: active: HDMI-A-1,eDP-1 empty: none
bus-ID: 00:02.0 chip-ID: 8086:1916 class-ID: 0300
Device-2: AMD Sun XT [Radeon HD 8670A/8670M/8690M / R5 M330 M430 Radeon
520 Mobile] vendor: Hewlett-Packard driver: radeon v: kernel arch: GCN-1
pcie: speed: 8 GT/s lanes: 4 bus-ID: 01:00.0 chip-ID: 1002:6660
class-ID: 0380 temp: 55.0 C
Device-3: Realtek HP Truevision HD type: USB driver: uvcvideo
bus-ID: 1-5:6 chip-ID: 0bda:57d6 class-ID: 0e02 serial: DEWKP01BI9L83M
Display: x11 server: X.Org v: 21.1.4 compositor: xfwm v: 4.16.1 driver: X:
loaded: modesetting unloaded: radeon alternate: fbdev,vesa
dri: iris,radeonsi gpu: i915 display-ID: :0.0 screens: 1
Screen-1: 0 s-res: 5760x2160 s-dpi: 96 s-size: 1524x572mm (60.00x22.52")
s-diag: 1628mm (64.09")
Monitor-1: HDMI-A-1 mapped: HDMI-1 pos: primary,top-right
model: Samsung LF32TU87 serial: HNTTA00160 res: 3840x2160 hz: 30 dpi: 140
size: 698x393mm (27.48x15.47") diag: 806mm (31.7") modes: max: 3840x2160
min: 720x400
Monitor-2: eDP-1 pos: bottom-l model: AU Optronics 0x38ed res: 1920x1080
dpi: 142 size: 344x193mm (13.54x7.6") diag: 394mm (15.5") modes: 1920x1080
API: OpenGL v: 4.6 Mesa 22.2.4 renderer: Mesa Intel HD Graphics 520 (SKL
GT2) direct render: Yes
Info:
Processes: 223 Uptime: 16m wakeups: 1 Memory: 7.66 GiB
used: 3.73 GiB (48.7%) Init: systemd v: 251 default: graphical Compilers:
gcc: 12.2.0 clang: 14.0.6 Packages: 2117 pm: pacman pkgs: 2106 pm: snap
pkgs: 11 Shell: Bash v: 5.1.16 running-in: xfce4-terminal inxi: 3.3.23