Display refresh rate not correct

[German_John]

Hey everyone,

 

so, I've hooked up the LG UM58p to my computer. It should run at 75Hz, but it doesn't seem to be able to do that. 

xrandr gives as output:

HDMI-A-0 connected primary 2560x1080+0+0 (normal left inverted right x axis y axis) 673mm x 284mm

2560x1080   60.00*+

My specs:

 

LG um58p

PowerColor RX 480 8GB

GPU driver: Mesa 18.3.0, openGL 4.4 (compatibility profile)

Ryzen 5 1600

MSI B350 mobo

16GB RAM

Ubuntu 18.04

 

The RX 480 should support that resolution and refresh rate over HDMI, and I don't think the cable matters, right? 

 

Thanks in advance,

John

[Origami Cactus]

Right click on desktop, then click display settings, then go into advanced display settings, display adaptor properties, and then change the 60hz to 75 hz.

[Tibon]

Be more thorough when buying stuff like monitors, these days we can't trust anything the vendor say. He might say max reso is 2560*1080 and max refresh rate is 75hz, but it doesn't mean 75hz at 2560*1080 resolution, so legally they're right, albeit misleading.

 

 

Here's the manual from the official website.

At that resolution, it only capable to do 60hz vertical refresh rate

[German_John]

50 minutes ago, Origami Cactus said:

Right click on desktop, then click display settings, then go into advanced display settings, display adaptor properties, and then change the 60hz to 75 hz.

That would be the Windows solution, but (at least on the Gnome desktop) that's not possible.

 

49 minutes ago, Tibon said:

-snip-

Ah, dang it. Oh well, doesn't really bother me (the monitor was a bargain), just would have liked to use that feature if I had it. 

Thanks!