Bug 426755 - Kscreen - HDMI external screen issue at max resolution 3440x1440 only half screen visible
Summary: Kscreen - HDMI external screen issue at max resolution 3440x1440 only half sc...
Status: RESOLVED FIXED
Alias: None
Product: KScreen
Classification: Plasma
Component: common (show other bugs)
Version: 5.19.5
Platform: Arch Linux Linux
: NOR normal
Target Milestone: ---
Assignee: kscreen-bugs-null@kde.org
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2020-09-19 23:46 UTC by slav
Modified: 2020-10-02 14:01 UTC (History)
0 users

See Also:
Latest Commit:
Version Fixed In:
Sentry Crash Report:

Attachments
this how looks external screen after log in to KDE (laptop screen have switch off) (142.05 KB, image/png)
2020-09-20 11:47 UTC, slav 		Details
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Description slav 2020-09-19 23:46:02 UTC 
SUMMARY


STEPS TO REPRODUCE
When runnig laptop with connected only external screen by HDMI (Iiyama North America PL3490WQ (DP-2-1 3440x1440) after logon to KDE unfortunately can see only half active screen (rest is black)

OBSERVED RESULT


EXPECTED RESULT


SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: 5.9.15
(available in About System)
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 5.15.1

ADDITIONAL INFORMATION
I found temporary solution:
1. run kscreen
2. set lower resolution then apply
3. changing for desire resolution 3440x1440 and set up 30Hz (at 60Hz doesn't change) then apply then have full screen working
Comment 1 slav 2020-09-20 11:47:08 UTC 
Created attachment 131802 [details]
this how looks external screen after log in to KDE (laptop screen have switch off)
Comment 2 slav 2020-10-02 14:01:03 UTC 
Issue has been resolved with new plasma-workspace 5.19.5-3 version.