*** This bug is a duplicate of bug 1970291 *** https://bugs.launchpad.net/bugs/1970291
As expected I am using Xorg now, beadon@semiauto:~$ echo $XDG_SESSION_TYPE x11 -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to gnome-shell in Ubuntu. https://bugs.launchpad.net/bugs/2026790 Title: Slow refresh rate (5-6hz) on Display managed by gnome-shell Status in gnome-shell package in Ubuntu: New Status in nvidia-graphics-drivers-535 package in Ubuntu: New Bug description: NVIDIA GPU sending out frames to an LG Electronics 27" display. At the moment, just a single display. The NVIDIA GPU is available across a Thunderbolt 3 link. Here is what the Nvidia Drivers are reporting: beadon@semiauto:~$ nvidia-smi Mon Jul 10 20:35:25 2023 +---------------------------------------------------------------------------------------+ | NVIDIA-SMI 535.54.03 Driver Version: 535.54.03 CUDA Version: 12.2 | |-----------------------------------------+----------------------+----------------------+ | GPU Name Persistence-M | Bus-Id Disp.A | Volatile Uncorr. ECC | | Fan Temp Perf Pwr:Usage/Cap | Memory-Usage | GPU-Util Compute M. | | | | MIG M. | |=========================================+======================+======================| | 0 NVIDIA GeForce GTX 1650 Off | 00000000:52:00.0 On | N/A | | 0% 33C P8 N/A / 85W | 99MiB / 4096MiB | 0% Default | | | | N/A | +-----------------------------------------+----------------------+----------------------+ +---------------------------------------------------------------------------------------+ | Processes: | | GPU GI CI PID Type Process name GPU Memory | | ID ID Usage | |=======================================================================================| | 0 N/A N/A 2341 G /usr/bin/gnome-shell 1MiB | +---------------------------------------------------------------------------------------+ Performing an strace I am seeing that the gnome-shell is **very** frequently hitting : EAGAIN (Resource temporarily unavailable) It's not clear to me what is causing this. strace on the 33 threads included for reference. To show different behaviors, clicks, movement of windows, typing in a terminal, as running glxgears to show(get) the refresh rate of 5 frames per second. Is there some kind of heavy CPU-based communication happening for gnome-shell ? I am seeing the CPU usage spike to 90+% when simple movements are done on screen. However, the nvidia-smi tools reports that it truly is attached to the right GPU, the PID is correct. Please see the strace for further information. ProblemType: Bug DistroRelease: Ubuntu 23.04 Package: gnome-shell 44.2-0ubuntu1 ProcVersionSignature: Ubuntu 6.2.0-24.24-generic 6.2.12 Uname: Linux 6.2.0-24-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.26.1-0ubuntu2 Architecture: amd64 CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Mon Jul 10 20:40:20 2023 DisplayManager: gdm3 InstallationDate: Installed on 2023-01-09 (182 days ago) InstallationMedia: Ubuntu 22.04.1 LTS "Jammy Jellyfish" - Release amd64 (20220809.1) ProcEnviron: LANG=en_US.UTF-8 PATH=(custom, no user) SHELL=/bin/bash TERM=xterm-256color XDG_RUNTIME_DIR=<set> RelatedPackageVersions: mutter-common 44.2-0ubuntu1 SourcePackage: gnome-shell UpgradeStatus: Upgraded to lunar on 2023-04-26 (75 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gnome-shell/+bug/2026790/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp