Ultrawide Monitor has Garbled Image at Correct Resolution

asked 2018-01-04 16:40:56 -0500

I recently got a LG 25UM58 ultrawide monitor, which is 2560 by 1080 resolution. When I switch to this resolution on Fedora 27 (gnome) the image becomes all messed up.

I'll try my best to get a good photo: photo

At other resolutions (1920x1080), the image seems to act as it would normally; the image is stretched, but there's no weird fuzzy garbled image.

I've also noticed that when at 2560x1080, the monitor thinks that the image is only 1920x1080: photo2

I'm using a Radeon RX460 over HDMI. I know that the hardware should be fine, since it works fine on my windows install.

I've done some searching for this problem, but the closest thing I could find was this bug report on redhat.

Could anyone shed a bit of light on this problem?

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I am seeing the same problem. Radeon RX550 / HDMI / Samsung 34UM61 UltraWide Monitor.

I was able to do an install using basic graphics mode, but I can't seem to enable 2560 x 1080 now that I have a working system using the open source AMD drivers. The official AMD drivers require an older version of RHEL.

Were you ever able to get this working?

stevek gravatar imagestevek ( 2018-05-18 14:39:58 -0500 )edit