https://bugzilla.kernel.org/show_bug.cgi?id=204735
Bug ID: 204735
Summary: nvidia gtx 1050 power back on with Suspend/Resume in
deep method
Product: ACPI
Version: 2.5
Kernel Version: 4.19.0-5-amd64
Hardware: All
OS: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: ACPICA-Core
Assignee: acpi_acpica-c...@kernel-bugs.osdl.org
Reporter: jydc...@21cn.com
Regression: No
i followed https://wiki.archlinux.org/index.php/Dell_XPS_15_9570 to make nvidia
card poweroff after boot success. start another xserver using the dGPU try some
opengl/vulkan test and exit the second xserver, kernel control the nvidia power
on/off is fine. i'm using nvidia non-free driver V418 not nouveau.
prevent nvidia kernel module loaded and echo 'auto' to 'pci bus
.../power/control' to boot and login desktop is working, then suspend with
default 'deep' method and resume, nvidia gpu power back on and never off, the
'/sys/bus/.../powe/control' still keep in 'auto'.
i change /sys/power/mem_sleep to s2idle then suspend/resume,nvidia card power
not back on, kenrel control the power on/off works fine. but deep is better,
right?
in fact no need to start xserver just boot in single user mode, no load
nvidia module and echo 'auto' to '/sys/bus/.../powe/control', nvidia gpu power
is off, then suspend/resume in deep way, nvidia card power back on, so it's
kernel bug i think.
i tried nouveau, bbswitch, kernel boot parm 'acpi_osi='!windows 2015',
acpi_rev_override=5 etc, start x hangs, lspci hangs.
intel i5-8300HQ + nvidia gtx 1050
debian10 kernel 4.19.0-5-amd64
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