| 21 Oct 2025 |
 Luke | Connection is via DisplayPort | 19:59:56 |
 K900 | It's very likely a cable issue | 20:02:18 |
| Luke | This was my initial thought, but as far as I recall I have a decent cable | 20:02:41 |
| Luke | Let me check the specs, it's long but within the DisplayPort standard | 20:03:02 |
| Luke | https://www.newegg.com/p/N82E16812399301 | 20:04:05 |
| Luke | It's one of these - I have an adjustable desk and keep my machine on the floor | 20:04:29 |
| Luke | Hence the length | 20:04:37 |
| K900 | I would try a shorter cable before anything else tbh | 20:04:41 |
| Luke | Let me grab the one from the box and report back | 20:05:00 |
| Luke | No dice, DisplayPort cable included with the monitor is also capped at 95Hz | 20:10:48 |
| Luke | Also, if that cable can truly do what is specified then the 8k@60Hz is an equivalent amount of data to 4k@240Hz | 20:13:01 |
| Luke | Shouldn't be a problem | 20:13:09 |
| K900 | Also are you using the AMDGPU DDX or modesetting | 20:19:02 |
| Luke | From inxi:
Graphics:
Device-1: Advanced Micro Devices [AMD/ATI] Vega 20 [Radeon VII]
driver: amdgpu v: kernel arch: GCN-5 pcie: speed: 8 GT/s lanes: 16 ports:
active: DP-3 empty: DP-1,DP-2,HDMI-A-1 bus-ID: 0c:00.0 chip-ID: 1002:66af
class-ID: 0300
Display: unspecified server: X.org v: 1.21.1.18 driver: X: loaded: amdgpu
dri: radeonsi gpu: amdgpu display-ID: :0 screens: 1
Screen-1: 0 s-res: 3840x2160 s-size: <missing: xdpyinfo>
Monitor-1: DP-3 mapped: DisplayPort-2 model: LG (GoldStar) ULTRAGEAR+
serial: <filter> res: N/A dpi: 140 size: 697x392mm (27.44x15.43")
diag: 800mm (31.5") modes: max: 3840x2160 min: 640x480
API: EGL v: 1.5 hw: drv: amd radeonsi platforms: device: 0 drv: radeonsi
device: 1 drv: swrast gbm: drv: kms_swrast surfaceless: drv: radeonsi x11:
drv: radeonsi inactive: wayland
API: OpenGL v: 4.6 compat-v: 4.5 vendor: amd mesa v: 25.2.4 glx-v: 1.4
direct-render: yes renderer: AMD Radeon VII (radeonsi vega20 ACO DRM 3.61
6.12.51) device-ID: 1002:66af
Info: Tools: api: clinfo, eglinfo, glxinfo x11: xprop,xrandr
| 20:21:40 |
| Luke | uhhhhh | 20:21:54 |
