[kwin] [Bug 409763] Kwin does not correctly detect refresh rate of PRIME monitor
https://bugs.kde.org/show_bug.cgi?id=409763 --- Comment #8 from Martin Flöser --- (In reply to aska990 from comment #7) > Fair enough. > > Then I have 2 more questions, if you don't mind : > > - Is there a reliable way to measure the actual refresh rate used by KWin ? No. And it doesn't make any sense to try to measure. KWin renders only if something changes, so in practice it's around 0 Hz on idle. > - What should it be in theory in a mixed setup (say, 60Hz + 144Hz) ? X11 only supports rendering to both screens at the same time. It doesn't make sense to render with 144 Hz on a 60 Hz Screen, but a 144 Hz screen handles 60 Hz just fine. -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 409763] Kwin does not correctly detect refresh rate of PRIME monitor
https://bugs.kde.org/show_bug.cgi?id=409763 --- Comment #7 from aska...@hotmail.fr --- Fair enough. Then I have 2 more questions, if you don't mind : - Is there a reliable way to measure the actual refresh rate used by KWin ? - What should it be in theory in a mixed setup (say, 60Hz + 144Hz) ? -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 409763] Kwin does not correctly detect refresh rate of PRIME monitor
https://bugs.kde.org/show_bug.cgi?id=409763 Martin Flöser changed: What|Removed |Added Status|REOPENED|RESOLVED Resolution|--- |NOT A BUG --- Comment #6 from Martin Flöser --- As you are quite aware of: fps effect is not a way to detect the actual used refresh rate, especially not if refresh rate of screens is > 100 Hz. -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 409763] Kwin does not correctly detect refresh rate of PRIME monitor
https://bugs.kde.org/show_bug.cgi?id=409763 --- Comment #5 from aska...@hotmail.fr --- I forgot to mention : setting "MaxFPS=144" makes the FPS indicator show "100" in all 3 cases. -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 409763] Kwin does not correctly detect refresh rate of PRIME monitor
https://bugs.kde.org/show_bug.cgi?id=409763 aska...@hotmail.fr changed: What|Removed |Added Ever confirmed|0 |1 Status|RESOLVED|REOPENED Resolution|NOT A BUG |--- -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 409763] Kwin does not correctly detect refresh rate of PRIME monitor
https://bugs.kde.org/show_bug.cgi?id=409763 --- Comment #4 from aska...@hotmail.fr --- Sorry to reopen, but it seems like there is still an issue with refresh rates. So you were right, the screen was indeed running at 60Hz. I fixed that by switching the refresh rate from "Auto" to "120Hz" in the Displays settings of KDE. (But then I switched it back to "Auto" and it kept the correct refresh rate, even after a reboot...so I have no idea how the 60Hz happened in the first place. I'm just going to assume some Xorg weirdness and move on). Now xrandr reports the correct refresh rate : eDP-1-1 connected 1920x1080+1919+0 (normal left inverted right x axis y axis) 344mm x 193mm 1920x1080120.00*+ 60.0159.9759.9659.93 And KWin as well : Screen 1: - Name: eDP-1-1 Geometry: 1919,0,1920x1080 Scale: 1 Refresh Rate: 120.003 However the FPS counter still shows the wrong value when both monitors are active. In summary, that's the current situation : When both monitors are active : FPS shows "72" When only the PRIME monitor is active : FPS shows "100" When only the external monitor is active : FPS shows "100" So, does that mean KWin is still running at the incorrect refresh rate when both monitors are active ? Also, even if one monitor was running at 60Hz and the other at 144Hz, shouldn't KWin run at the highest value instead of some weird compromise like 72Hz ? Or is that some kind of explicit hack to avoid tearing issues ? -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 409763] Kwin does not correctly detect refresh rate of PRIME monitor
https://bugs.kde.org/show_bug.cgi?id=409763 Martin Flöser changed: What|Removed |Added Resolution|--- |NOT A BUG Status|REPORTED|RESOLVED --- Comment #3 from Martin Flöser --- According to the output of xrandr the screen is running at 60 Hz. -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 409763] Kwin does not correctly detect refresh rate of PRIME monitor
https://bugs.kde.org/show_bug.cgi?id=409763 --- Comment #2 from aska...@hotmail.fr --- Created attachment 121493 --> https://bugs.kde.org/attachment.cgi?id=121493=edit Current .kwinrc -- You are receiving this mail because: You are watching all bug changes.
[kwin] [Bug 409763] Kwin does not correctly detect refresh rate of PRIME monitor
https://bugs.kde.org/show_bug.cgi?id=409763 --- Comment #1 from aska...@hotmail.fr --- Created attachment 121492 --> https://bugs.kde.org/attachment.cgi?id=121492=edit Output of "xrandr -q" -- You are receiving this mail because: You are watching all bug changes.
