(In reply to Kai-Heng Feng from comment #145) Thank you very much for this optimistic-sounding info, Kai-Heng Feng.
> Laptops with Skylake SoC and later shouldn't need bbswitch. PCIe port PM > will disable the power of the card. How do I check if I have Skylake SoC? I am actually currently using a modified bbswitch where I have disabled the acpi calls. The point of this is to force bumblebee to automatically load and unload the nvidia modules before and after using optirun. I suspect there is an easier way but for now this works for me. > After nvidia.ko gets unloaded, make sure "power/control" is "auto" for its > video (e.g. 01:00.0) and audio (e.g. 01:00.1) functions and its upstream > bridge (use lspci -t to check). I initially tried what you describe here but the audio part was preventing power management from happening because it was permanently flagged in use by the snd_hda_audio module. Hence my work-around. > In addition to that, these two commits are also required for mainline kernel > users: > https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/ > ?id=52525b7a3cf82adec5c6cf0ecbd23ff228badc94 > https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/ > ?id=bacd861452d2be86a4df341b12e32db7dac8021e I am not interested in attempting to compile the kernel so will wait for these two commits to make it into the stable release. Reading their descriptions, especially the second one, sounds like it is the perfect fix for what I am experiencing. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to nvidia-graphics-drivers-390 in Ubuntu. https://bugs.launchpad.net/bugs/1803179 Title: System does not reliably come out of suspend Status in Linux: Incomplete Status in linux package in Ubuntu: Confirmed Status in nvidia-graphics-drivers-390 package in Ubuntu: Confirmed Status in nvidia-graphics-drivers-410 package in Ubuntu: Confirmed Bug description: Dell XPS 15 (9750); it might eventually manage to suspend when the lid is closed, but more often than not will not wake up again when the lid is opened. Waking up using the power button often results in a system that is apparently frozen (graphics displayed are the last on screen before suspend, clock seconds do not change) System is unresponsive to the keyboard at that time (can't switch to a VT or otherwise interact with the system other than holding the power button for a few seconds to shut it down). ProblemType: Bug DistroRelease: Ubuntu 19.04 Package: linux-image-4.18.0-10-generic 4.18.0-10.11 ProcVersionSignature: Ubuntu 4.18.0-10.11-generic 4.18.12 Uname: Linux 4.18.0-10-generic x86_64 NonfreeKernelModules: nvidia_modeset nvidia ApportVersion: 2.20.10-0ubuntu14 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: mtrudel 2516 F.... pulseaudio CurrentDesktop: ubuntu:GNOME Date: Tue Nov 13 10:42:08 2018 InstallationDate: Installed on 2018-11-02 (10 days ago) InstallationMedia: Ubuntu 18.10 "Cosmic Cuttlefish" - Release amd64 (20181017.3) MachineType: Dell Inc. XPS 15 9570 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.18.0-10-generic root=UUID=14900847-323c-4427-b59e-89210ec1c8ec ro quiet splash vt.handoff=1 RelatedPackageVersions: linux-restricted-modules-4.18.0-10-generic N/A linux-backports-modules-4.18.0-10-generic N/A linux-firmware 1.175 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 09/03/2018 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.5.0 dmi.board.name: 0D0T05 dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 10 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.5.0:bd09/03/2018:svnDellInc.:pnXPS159570:pvr:rvnDellInc.:rn0D0T05:rvrA00:cvnDellInc.:ct10:cvr: dmi.product.family: XPS dmi.product.name: XPS 15 9570 dmi.product.sku: 087C dmi.sys.vendor: Dell Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1803179/+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
