Public bug reported: When the system battery drops below the threshold, nvidia-powerd shifts to P5. Reconnecting the AC adapter does not prompt the daemon to re- evaluate the power source. The GPU remains locked in P5 until nvidia- powerd is manually restarted.
Attached: I have attached the github patch here as a zip also separatly with comments explaining that is just below the same as a repos from github Temporary Fix/Workaround: I wrote a C binary triggered by a udev rule (SUBSYSTEM=="power_supply") that automatically resets the daemon state upon AC connection. I am linking my repository here so other users facing this issue have a patch while waiting for an upstream driver fix: https://github.com/lemmingzx/nvidia-linux-undervoltage-fix also this is a laptop only bug.... desktops and servers are not effected by this. ProblemType: Bug DistroRelease: Ubuntu 26.04 Package: nvidia-driver-595 595.71.05-0ubuntu0.26.04.1 ProcVersionSignature: Ubuntu 7.0.0-28.28-generic 7.0.12 Uname: Linux 7.0.0-28-generic x86_64 ApportVersion: 2.34.0-0ubuntu2 Architecture: amd64 CasperMD5CheckResult: pass CurrentDesktop: ubuntu:GNOME Date: Tue Jul 21 22:28:42 2026 InstallationDate: Installed on 2026-03-23 (120 days ago) InstallationMedia: Ubuntu 25.10 "Questing Quokka" - Release amd64 (20251007) ProcEnviron: LANG=en_US.UTF-8 PATH=(custom, no user) SHELL=/bin/bash TERM=xterm-256color XDG_RUNTIME_DIR=<set> SourcePackage: nvidia-graphics-drivers-595 UpgradeStatus: Upgraded to resolute on 2026-04-20 (92 days ago) ** Affects: nvidia-graphics-drivers-595 (Ubuntu) Importance: Undecided Status: New ** Tags: nvidia-powerd ** Patch added: "zip file has the same patch.sh and the c code file as github..... expect the same" https://bugs.launchpad.net/bugs/2161452/+attachment/5985058/+files/patch%20files.zip -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2161452 Title: nvidia gpu under voltage due to nvidia-powerd bug To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-595/+bug/2161452/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
