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Hi everybody
So I have the following issue:
I have a Lenovo ThinkPad T470 connected to a Lenovo T24i-20 with HDMI on an Arch installation with KDE Plasma 5.23.1
This is the KDE System information:
KDE Plasma Version: 5.23.1
KDE Frameworks Version: 5.87.0
Qt Version: 5.15.2
Kernel Version: 5.14.14-arch1-1 (64-bit)
Graphics Platform: X11
Processors: 4 x Intel Core i5-7300U CPU @ 2.60GHz
Memory: 15.6 GiB of RAM
Graphics Processor: Mesa Intel HD Graphics 620
First of all, everything was working fine, what happens was that I configured a Global Scale on KDE System Settings of 125% because the T470 has a 1080p but 14" display so a HiDPI screen, then I bought the Lenovo T24i-20 and I had to buy the HDMI cable, (which, could be faulty, but I bought 2) I made all the connections and everything worked fine, I disconnected the laptop from the monitor several times and everything was good, everything looked fine, but then I said to my self "Well now I'm only using the monitor screen so I will configure the scale to 100% (the default one), made that change hit Save, it said that I should restart and I did, after that now the monitor flickers a little bit like when a monitor have the Refrash Rate that doesn't support, but that is setup to 60hz on both monitor and laptop screen.
After failed that I thought that maybe the cable was faulty, I changed, same result, put the scale back to 125% the flickering persist after that too.
A xrandr --listmonitors say the following
Monitors: 2
0: +*eDP1 1920/310*1080/170+0+0 eDP1
1: +HDMI2 1920/530*1080/300+1920+0 HDMI2
I don't have a xorg.conf configured to provide as information
I tryed this
https://bbs.archlinux.org/viewtopic.php … 6#p1595276
With no luck, unless I have to put it on /usr/share/X11/xorg.conf.d/ instead of /etc/X11/xorg.conf.d/ but as far as I know it should work either way.
I could point the error to the cables but... it was working fine and putting the global scale back to 125% didn't fix it so I would need some help.
If there is any other information I could provide please let me know.
Regards
Update "Solved"
The error is solved but... I will leave this at least for 24hrs without the [SOLVED] tag because what I did was... setup the FR to 50, apply, keep changes, setup the FR to 60, apply, keep changes... now it works... I also changed in the compositor the latency from Balance to Prefer Smoother animations, but I don't think this was the solution, but the Frame Rate change was, the scale method was already on Smooth and Rendering backend on OpenGL 3.1, maybe it was something weird with the monitor or maybe something got unsetted and after the Frame Rate change something, somewhere got setted up... I don't know but I would want to know to understand the core issue of this if anyone has any idea.
Regards
[Solved]
Workaround. Set Frame Rate of the monitor to another value, apply then set the frame rate correctly and apply keep changes.
Last edited by Hexploder (2021-10-29 11:48:55)
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