Using kernel 6.11 I consistently get results like these from glmark2-wayland:
nouveau...: ~1000 FPS nvidia-550: ~8000 FPS nvidia-560: ~2000-4000 FPS but I can solve most of it with env __NV_DISABLE_EXPLICIT_SYNC=1 glmark2-wayland: nvidia-560: ~7000 FPS Though applying the same variable system-wide didn't fix desktop stutter. So that's a separate bug. Real time profile results suggest my desktop stutter is gnome-shell spending most (60%) of its time inside lock_front_buffer (also mentioned in https://gitlab.gnome.org/GNOME/mutter/-/issues/3461). TL;DR - I think there are two or three bugs here: 1. nvidia-560 is much slower than nvidia-550 in glmark2-wayland unless you set __NV_DISABLE_EXPLICIT_SYNC=1 2. nvidia-560 spends way too much of gnome-shell's real time (60%) inside gbm_surface_lock_front_buffer (called by lock_front_buffer). 3. nvidia-535 erratic results with different kernels (comment #9). Let's ignore that for now. ** Bug watch added: gitlab.gnome.org/GNOME/mutter/-/issues #3461 https://gitlab.gnome.org/GNOME/mutter/-/issues/3461 ** Changed in: mutter (Ubuntu) Status: New => In Progress -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2081140 Title: [regression] Poor performance in Nvidia-560 Wayland sessions Status in linux package in Ubuntu: New Status in mutter package in Ubuntu: In Progress Status in nvidia-graphics-drivers-535 package in Ubuntu: New Status in nvidia-graphics-drivers-560 package in Ubuntu: New Bug description: I've just tried the Nvidia-560 driver for the first time and am seeing very poor performance in Wayland sessions. Just tapping the Super key I can see animations stuttering. In 'NVIDIA Settings' it looks like the reason might be a lack of power profiles ("Performance Levels"). Those are only reported correctly if I log into Xorg. And indeed performance in Xorg sessions is much higher, more like what I would expect. P.S. Performance on this machine is much worse in upstream GNOME without triple buffering. So triple buffering is doing its job. ProblemType: Bug DistroRelease: Ubuntu 24.10 Package: nvidia-driver-560 560.35.03-0ubuntu3 ProcVersionSignature: Ubuntu 6.11.0-7.7-generic 6.11.0-rc7 Uname: Linux 6.11.0-7-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.30.0-0ubuntu2 Architecture: amd64 CasperMD5CheckResult: pass Date: Thu Sep 19 14:13:32 2024 InstallationDate: Installed on 2024-06-12 (99 days ago) InstallationMedia: Ubuntu 24.10 "Oracular Oriole" - Daily amd64 (20240528) ProcEnviron: LANG=en_US.UTF-8 PATH=(custom, no user) SHELL=/bin/bash TERM=xterm-256color XDG_RUNTIME_DIR=<set> SourcePackage: nvidia-graphics-drivers-560 UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2081140/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
