Arch Linux

oech3

Member

Registered: 2017-09-03

Posts: 76

[Solved]Simple udev rules for /sys/bus/pci/devices/*/ata*/power/con...

I have

/etc/udev/rules.d/dev_power_save.rules
ACTION=="add",SUBSYSTEM=="pci",TEST=="ata1/power/control",ATTR{ata1/power/control}="auto"
ACTION=="add",SUBSYSTEM=="pci",TEST=="ata2/power/control",ATTR{ata2/power/control}="auto"
ACTION=="add",SUBSYSTEM=="pci",TEST=="ata3/power/control",ATTR{ata3/power/control}="auto"
ACTION=="add",SUBSYSTEM=="pci",TEST=="ata4/power/control",ATTR{ata4/power/control}="auto"
ACTION=="add",SUBSYSTEM=="pci",TEST=="ata5/power/control",ATTR{ata5/power/control}="auto"
ACTION=="add",SUBSYSTEM=="pci",TEST=="ata6/power/control",ATTR{ata6/power/control}="auto"

need to make GOOD tunables given by powertop.
The setting is not portable and I could not use wildcard well. How to simplify it without systemd service or RUN+=?
The reason I use udev rule is accurate and faster than

powertop --aututune

.

Last edited by oech3 (2025-04-05 13:04:10)

seth

Member

From: Don't DM me only for attention

Registered: 2012-09-03

Posts: 74,314

Re: [Solved]Simple udev rules for /sys/bus/pci/devices/*/ata*/power/con...

By not using the pci subsystem, https://discussion.fedoraproject.org/t/ … g/100821/2

---

How to upload text · How to boot w/o GUI · Disable Windows Fast-Start! · Fix your xinitrc

oech3

Member

Registered: 2017-09-03

Posts: 76

Re: [Solved]Simple udev rules for /sys/bus/pci/devices/*/ata*/power/con...

But,

SUBSYSTEM=="ata_port", KERNEL=="ata*", ATTR{device/power/control}="auto"

did not solve this even I removed device/, or added ACTION=="add",.

Rules I posted only work.

I have /sys/class/ata_port/ata*/power/control and /sys/class/ata_port/ata*/device (symlink).

oech3

Member

Registered: 2017-09-03

Posts: 76

Re: [Solved]Simple udev rules for /sys/bus/pci/devices/*/ata*/power/con...

SUBSYSTEM=="ata_port",KERNEL=="ata*",ATTR{device/power/control}="auto"

worked.
I typo (maybe).

@seth Thankyou.