Score:0

Setting Ubuntu resolution to 5120x2160

in flag

I have a new monitor that can display at 5120x2160, See: https://www.dell.com/en-uk/shop/dell-ultrasharp-40-curved-wuhd-monitor-u4021qw/apd/210-ayjf/monitors-monitor-accessories.

I have ran

cvt 5120 2160

Then

xrandr --newmode "5120x2160_60.00"  949.00  5120 5536 6096 7072  2160 2163 2173 2237 -hsync +vsync

And then

xrandr --addmode HDMI-2 "5120x2160_60.00"

Then to test its working I run

xrandr --output HDMI-2 --mode 5120x2160

And get ..

xrandr: cannot find mode 5120x2160

I have spent far to much time on this and even bough a new high end HDMI cable thinking that could be the problem. Check on my windows machine and the resolution works perfect with plug and play, just can not get it on ubuntu.

Ubuntu is being a pain and the max resolution im gettimg (plug and play) at 21:9 is 2560x1440.

can anyone help me push it to 5120x2160.

thank you.

UPDATE:

run though commands again trying out a different resolution and can successfully get 3440x1440 @30 running, but no ball on 5120x2160.

David avatar
cn flag
What version of Ubuntu? Which nvidia driver?
Beep avatar
in flag
@David configuration: driver=i915 latency=0
David avatar
cn flag
The version of Ubuntu?
Beep avatar
in flag
@David Ubuntu 20.04.3 LTS
Beep avatar
in flag
@David Kernel: Linux 5.4.0-71-generic
ChanganAuto avatar
us flag
It doesn't support 60Hz at the native resolution over HDMI, only 30Hz: *WUHD 5120 x 2160 (DisplayPort: 60 Hz, HDMI: 30 Hz)*. Source: https://www.dell.com/en-uk/shop/dell-ultrasharp-40-curved-wuhd-monitor-u4021qw/apd/210-ayjf/monitors-monitor-accessories#techspecs_section
Beep avatar
in flag
@ChanganAuto ive tried to set to 30Hz still no game
Beep avatar
in flag
5120x2160_30.00 29.98 still no luck
Score:0
in flag

you typed xrandr --output HDMI-2 --mode 5120x2160 it should be

xrandr --output HDMI-2 --mode "5120x2160_60.00"

That should help.

Beep avatar
in flag
Unfortunately I get '$ xrandr --output HDMI-2 --mode 5120x2160 xrandr: Configure crtc 0 failed'
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