The instructions in comment #31 only partially help. The computer usually sleeps correctly but waking up is a lottery with the result seeming to be negative more often than not after all. Still the only sure way is to disable the 3 nvidia files in systemd and the NVreg_PreserveVideoMemoryAllocations NVreg_TemporaryFilePath option. Only this way is reliable for older graphics cards, e.g. Maxwell (GM10x), which after all are still supported with the new drivers.
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to nvidia-graphics-drivers-470 in Ubuntu. https://bugs.launchpad.net/bugs/1946303 Title: No video after wake from S3 due to Nvidia driver crash Status in nvidia-graphics-drivers-470 package in Ubuntu: Confirmed Status in nvidia-graphics-drivers-510 package in Ubuntu: Confirmed Status in nvidia-graphics-drivers-525 package in Ubuntu: Confirmed Status in nvidia-graphics-drivers-550 package in Ubuntu: Confirmed Bug description: Since upgrading to Ubuntu 21.10, my computer sometimes fails to properly wake from suspend. It does start running again, but there is no video output. I'm attaching text for two crashes from kernel log output. First is: /var/lib/dkms/nvidia/470.63.01/build/nvidia/nv.c:3967 nv_restore_user_channels+0xce/0xe0 [nvidia] Second is: /var/lib/dkms/nvidia/470.63.01/build/nvidia/nv.c:4162 nv_set_system_power_state+0x2c8/0x3d0 [nvidia] Apparently I'm not the only one having this problem with 470 drivers. https://forums.linuxmint.com/viewtopic.php?t=354445 https://forums.developer.nvidia.com/t/fixed-suspend-resume-issues-with-the-driver-version-470/187150 Driver 470 uses the new suspend mechanism via /usr/lib/systemd/system- sleep/nvidia. But I was using that mechanism with driver 460 in Ubuntu 21.04 and sleep was reliable then. Right now I'm going back to driver 460. ProblemType: Bug DistroRelease: Ubuntu 21.10 Package: nvidia-driver-470 470.63.01-0ubuntu4 ProcVersionSignature: Ubuntu 5.13.0-16.16-generic 5.13.13 Uname: Linux 5.13.0-16-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.11-0ubuntu70 Architecture: amd64 CasperMD5CheckResult: unknown CurrentDesktop: KDE Date: Wed Oct 6 23:24:02 2021 SourcePackage: nvidia-graphics-drivers-470 UpgradeStatus: Upgraded to impish on 2021-10-02 (4 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-470/+bug/1946303/+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
