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Graphics Cards

Journeyman III

Radeon 5700 RX Ubuntu 18.04.2 mouse cursor freezing

I have Radeon 5700 RX

I installed fresh version of Ubuntu 18.04.2 and installed drivers from the website. Otherwise resolution is very low. 

With drivers all looks good - the resolution is correct and I can set the refresh rate.

The problem is that every approx 5 seconds mouse cursor freezes for about 1 second. 

This happens only on the target resolution of my display (3440x1444). If I fallback to 2560x1080 then cursor seems fine. But this is below screens default resolution

I tried to install os and the drivers three times now, each time with the same effect.

Can I get some help with this please?

Thank you!

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