[kde] [Bug 411077] New: Severe graphical glitches on 21:9 monitor using a AMD GPU ( both mesa and propretary )

[bugzilla_noreply at kde.org]

https://bugs.kde.org/show_bug.cgi?id=411077

            Bug ID: 411077
           Summary: Severe graphical glitches on 21:9 monitor using a AMD
                    GPU ( both mesa and propretary )
           Product: kde
           Version: unspecified
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: grave
          Priority: NOR
         Component: clipboard
          Assignee: unassigned-bugs at kde.org
          Reporter: kdeneon at sharklasers.com
  Target Milestone: ---

SUMMARY
Every time I use my 21:9 monitor (LG 29WK500) with an AMD GPU and a distro with
KDE severe graphicals glitches,compromising the use of the system.
Tested with KDE Neon user edition 18.04 and Kubuntu 18.04 on these rigs

PC 1:
Intel Core 2 Duo P8600
AMD RADEON HD 4350
RAM 4 GB

PC 2:
Ryzen 5 1600
AMD RADEON RX 580
RAM 16 GB

Using the monitor with another DE or OS or NVIDIA GPU doesn't seem to be any
problem.



STEPS TO REPRODUCE
1. Using a distro with KDE and an AMD GPU
2. Attach to the PC a 21:9 monitor

OBSERVED RESULT

Severe graphical glitches compromise the usage of the system

EXPECTED RESULT

Normal use

SOFTWARE/OS VERSIONS

Linux/KDE Plasma: KDE Neon 18.04/Kubuntu 18.04
(available in About System)
KDE Plasma Version: 5.16.4
KDE Frameworks Version: 5.61.0
Qt Version: 5.12.3

ADDITIONAL INFORMATION
N/A

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