https://bugs.kde.org/show_bug.cgi?id=413171
Bug ID: 413171
Summary: 5.17 lost ability to have (detect?) automatic refresh
rate on monitors
Product: plasmashell
Version: 5.17.0
Platform: Manjaro
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Multi-screen support
Assignee: aleix...@kde.org
Reporter: michal.dybc...@gmail.com
CC: plasma-b...@kde.org
Target Milestone: 1.0
Created attachment 123333
--> https://bugs.kde.org/attachment.cgi?id=123333&action=edit
Screen settings - lack of refresh rates on the list
SUMMARY
Before Plasma 5.17 the secondary monitor was automatically given AUTOMATIC
refresh rate and if my memory is not mistaken, it had more refresh rates on the
list, including fractional ones. Somehow Plasma was able to detect refresh
rates for a given resolution and provide it so I could set it to 1920x1080.
The secondary monitor is DELL P2017H (HDMI-1-3).
Unfortunately, after the update, AUTOMATIC refresh rate option is simply gone
from the menu and the system sets it to hardcoded 60Hz. The issue is, the
secondary monitor can have 60Hz only with 1600x900, when set to 1920x1080
before it defaulted to 59,6 or something like that and all was working well.
Now, when Plasma tries to force 60Hz the secondary monitor shows the error that
"1920x1080, 60Hz is not supported".
In the effect, before Plasma 5.17 I could set both monitors for 1920x1080, now
I can't and the secondary one must be 1600x900 which looks weird and is
unpleasant to work with. It's all because there is no flexible AUTOMATIC
setting that would just choose refresh rate that monitor is capable of. Having
it forced to 60Hz simply blocks most of the resolutions available on the
monitor because those are usually not full 60Hz but have some fractional value.
The real issue here is probably lack of detection for fractional refresh rates
so the system sees the only a rounded option that is 60Hz and that supports
only very few screen resolutions.
I remember that before the update I had Automatic on the top of the list and
then 60Hz and then 59, something (many choices for various fractional refresh
rates). When I set the fractional one instead of Automatic, the secondary
monitor worked well with 1920x1080 too. Now I don't have any choice but the
60Hz.
Operating System: Manjaro Linux
KDE Plasma Version: 5.17.0
KDE Frameworks Version: 5.63.0
Qt Version: 5.13.1
Kernel Version: 5.3.6-1-MANJARO
OS Type: 64-bit
Processors: 8 × Intel® Core™ i7-6700HQ CPU @ 2.60GHz
Memory: 7,6 GiB
Multiple monitor setup is plagued by a MULTITUDE of BUGS that is not a topic of
this report, however, this issue hits the nail into the coffin so to speak. At
the moment Plasma 5.17 is hardly usable with multi-monitors. It crashes
plasmashell, doesn't remember settings, changes settings, is inconsistent in
behavior, is unpredictable and weird and now it doesn't even let me choose the
desired screen resolution because of this refresh rate bug. This is bad.
Note, I tested it on Intel GPU with Modesetting drivers and on Nvidia GPU with
proprietary drivers. The same issue with refresh rate and thus with screen
resolution.
I'm sending a screenshot.
--
You are receiving this mail because:
You are watching all bug changes.
