On Mon, Sep 30, 2019 at 06:05:14PM +0200, Karol Herbst wrote: > still happens with your patch applied. The machine simply gets shut down. > > dmesg can be found here: > https://gist.githubusercontent.com/karolherbst/40eb091c7b7b33ef993525de660f1a3b/raw/2380e31f566e93e5ba7c87ef545420965d4c492c/gistfile1.txt Looking your dmesg: Sep 30 17:24:27 kernel: nouveau 0000:01:00.0: DRM: DCB version 4.1 Sep 30 17:24:27 kernel: nouveau 0000:01:00.0: DRM: MM: using COPY for buffer copies Sep 30 17:24:27 kernel: [drm] Initialized nouveau 1.3.1 20120801 for 0000:01:00.0 on minor 1 I would assume it runtime suspends here. Then it wakes up because of PCI access from userspace: Sep 30 17:24:42 kernel: pci_raw_set_power_state: 56 callbacks suppressed and for some reason it does not get resumed properly. There are also few warnings from ACPI that might be relevant: Sep 30 17:24:27 kernel: ACPI Warning: \_SB.PCI0.GFX0._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20190509/nsarguments-59) Sep 30 17:24:27 kernel: ACPI Warning: \_SB.PCI0.PEG0.PEGP._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20190509/nsarguments-59) This seems to be Dell XPS 9560 which I think has been around some time already so I wonder why we only see issues now. Has it ever worked for you or maybe there is a regression that causes it to happen now?
