https://bugs.kde.org/show_bug.cgi?id=441488
Bug ID: 441488
Summary: Support of high refresh rate on DP 1.4 to HDMI 2.0
convertors
Product: KScreen
Version: 5.21.5
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: common
Assignee: kscreen-bugs-n...@kde.org
Reporter: archenr...@gmail.com
Target Milestone: ---
SUMMARY
I prefer DP interfaces, but the lack of large monitors with high frequency made
me buy 55" LG OLED55C11, supports 120hz refresh rate, but lack any DP. So I
bought DP to HDMI adapters:
https://www.amazon.com/CLUB-3D-CAC-1082-Active-Adapter/dp/B07HNTNTMR
https://www.amazon.com/Club-3D-DisplayPort1-4-Adapter-CAC-1085/dp/B08BX49V5V
for the second one I don't have USB-C port A power yet, waiting for additional
pci-express card, it displays, but maybe lack enough power, don't know.
problem is that screen only shows 60hz available and it reflects xrandr which
reports:
So even with new DP cable used with Club3D dp-to-hdmi convertor it still shows
60hz only at 4k:
[08:14:14] zangetsu@andromeda $ ~ xrandr
Screen 0: minimum 8 x 8, current 3840 x 2160, maximum 32767 x 32767
DP-0 connected primary 3840x2160+0+0 (normal left inverted right x axis y axis)
1600mm x 900mm
3840x2160 60.00*+ 59.94 50.00 29.97 25.00 23.98
4096x2160 59.94 50.00 29.97 25.00 24.00 23.98
2560x1440 120.00
1920x1080 119.88 100.00 60.00 59.94 50.00 29.97 25.00
23.98
1280x1024 60.02
1280x720 59.94 50.00
1152x864 60.00
1024x768 60.00
800x600 60.32
720x576 50.00
720x480 59.94
640x480 59.95 59.94 59.93
DP-1 disconnected (normal left inverted right x axis y axis)
HDMI-0 disconnected (normal left inverted right x axis y axis)
So I would like to ask in this request to support high refresh rates supported
by adapter. The adapter works in Windows 10 Pro showing 120hz/4k
I use it with nvidia 1030 gt which has one do and one hdmi.
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