SUMMARY I am trying to get tearing working on kde6 but I can't get it working, I thought it might the driver issue. but with the release of nvidia 555 they implemented tearing protocol support for vulkan. I still can't get it working. ``` ❯ cat /etc/environment # # This file is parsed by pam_env module # # Syntax: simple "KEY=VAL" pairs on separate lines # KWIN_DRM_NO_AMS=1 ❯ modinfo nvidia | grep ^version version: 555.42.02 STEPS TO REPRODUCE 1. Set KWIN_DRM_NO_AMS=1 2. Enable Screen Tearing in Full Screen windows 3. Run game on nvidia using offloading (prime-run or nvidia offloading) 4. Make sure game is running in vulkan IMMEDIATE mode (vsync disabled in game) OBSERVED RESULT Upon moving the screen really fast, you should be able to see some tearing here and there or running the game on low fps will cause the most tearing. (Tested on windows/xorg) EXPECTED RESULT Screen tearing with higher/lower fps, instead of forcing vsync and letency SOFTWARE/OS VERSIONS ❯ fastfetch .-------------------------: syntist@syntist-pc .+=========================. ------------------ :++===++==================- :++- OS: CachyOS Linux x86_64 :*++====+++++=============- .==: Host: Precision 5570 -*+++=====+***++==========: Kernel: Linux 6.9.1-2-cachyos-lto =*++++========------------: Uptime: 2 hours, 24 mins =*+++++=====- ... Packages: 1136 (pacman), 39 (flatpak-system), 1 (flatpak-user) .+*+++++=-===: .=+++=: Shell: zsh 5.9 :++++=====-==: -*****+ Display (SHP1515): 1920x1200 @ 66Hz (as 960x600) [Built-in] :++========-=. .=+**+. DE: KDE Plasma 6.0.4 .+==========-. . WM: KWin (Wayland) :+++++++====- .--==-. WM Theme: Breeze :++==========. :+++++++: Theme: Breeze (Dark) [QT], Breeze-Dark [GTK2], Breeze [GTK3/4] .-===========. =*****+*+ Icons: breeze-dark [QT], breeze-dark [GTK2/3/4] .-===========: .+*****+: Font: Noto Sans (10pt) [QT], Noto Sans (10pt) [GTK2/3/4] -=======++++:::::::::::::::::::::::::-: .---: Cursor: Breeze_Light (24px) :======++++====+++******************=. Terminal: konsole 24.2.2 :=====+++==========++++++++++++++*- Terminal Font: MesloLGS NF (10pt) .====++==============++++++++++*- CPU: 12th Gen Intel(R) Core(TM) i7-12800H (20) @ 4.80 GHz .===+==================+++++++: GPU 1: NVIDIA RTX A1000 Laptop GPU .-=======================+++: GPU 2: Intel Iris Xe Graphics @ 1.40 GHz [Integrated] .......................... Memory: 6.58 GiB / 15.30 GiB (43%) Swap: 2.32 GiB / 31.55 GiB (7%) Disk (/): 174.82 GiB / 237.41 GiB (74%) - xfs Local IP (wlan0): 192.168.1.168/24 * Battery: 100% [AC Connected] Locale: en_US.UTF-8 ADDITIONAL INFORMATION People using nvidia only card did say tearing is working, even before the new driver update but for me. It never worked maybe it's cause of hybrid nature of laptop. I only have 66hz screen and having screen tearing enabled on windows/xorg make experience much nice latency wise. On windows I have the smoothes experience even though am having lower fps sometimes, mainly cause of tearing.
https://imgur.com/a/MCMomAk video shot in slow motion, as you can see no tearing only ghosting.
Tearing support seems to only be implemented for native Wayland Vulkan apps in the proprietary NVidia driver. It'll work once the driver implements the X11 API for tearing on Xwayland too
(In reply to Zamundaaa from comment #2) > Tearing support seems to only be implemented for native Wayland Vulkan apps > in the proprietary NVidia driver. It'll work once the driver implements the > X11 API for tearing on Xwayland too hey there, is there any estimation when this will happen? maybe with the stable release of 555? or is it implemented in 555 beta already as well?
It's not implemented in 555, and we don't have a timeline for it. As it's just setting a different flag for Xwayland, it shouldn't take too long though