Description of problem: The nVidia run power management doesn't seem to work correctly. Using powertop to echo 'auto' > '/sys/bus/pci/devices/0000:01:00.0/power/control'; saves my laptop about 6-7W (14 down to 7). I am using a Dell laptop 5510 01:00.0 3D controller: NVIDIA Corporation GM107GLM [Quadro M1000M] (rev a2) Subsystem: Dell Device 06e5 Kernel modules: nouveau kernel version 4.14.14-300.fc27.x86_64 dmesg output snippet [14321.976863] MXM: GUID detected in BIOS [14321.976900] ACPI Warning: \_SB.PCI0.GFX0._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20170728/nsarguments-100) [14321.976958] ACPI Warning: \_SB.PCI0.PEG0.PEGP._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20170728/nsarguments-100) [14321.977201] pci 0000:01:00.0: optimus capabilities: enabled, status dynamic power, hda bios codec supported [14321.977205] VGA switcheroo: detected Optimus DSM method \_SB_.PCI0.PEG0.PEGP handle [14321.977207] nouveau: detected PR support, will not use DSM [14321.977236] nouveau 0000:01:00.0: enabling device (0000 -> 0003) [14321.977376] nouveau 0000:01:00.0: unknown chipset (ffffffff) [14321.977381] nouveau: probe of 0000:01:00.0 failed with error -12 For some reason, lspci -k says nouveau driver is loaded, but lsmod says otherwise. Manually running 'modprobe nouveau' produces the above dmesg output. Cheers, Don
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Fedora 27 changed to end-of-life (EOL) status on 2018-11-30. Fedora 27 is no longer maintained, which means that it will not receive any further security or bug fix updates. As a result we are closing this bug. If you can reproduce this bug against a currently maintained version of Fedora please feel free to reopen this bug against that version. If you are unable to reopen this bug, please file a new report against the current release. If you experience problems, please add a comment to this bug. Thank you for reporting this bug and we are sorry it could not be fixed.