Arch Linux

OliD

Member

Registered: 2017-02-13

Posts: 5

udev detects two unexistant backlight devices

Seems to be caused by ACPI reporting them.

Can I rewrite the udev rule without touching the /usr/lib/udev/rules.d/ file?

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The triggered rule:

/usr/lib/udev/rules.d/99-systemd.rules:SUBSYSTEM=="backlight", TAG+="systemd", IMPORT{builtin}="path_id", ENV{SYSTEMD_WANTS}+="systemd-backlight@backlight:$name.service"

The generated backlight services:

* systemd-backlight@backlight:acpi_video0.service                                             loaded failed     failed    Load/Save Screen Backlight>
* systemd-backlight@backlight:acpi_video1.service                                             loaded failed     failed    Load/Save Screen Backlight>
  systemd-backlight@backlight:radeon_bl0.service                                              loaded active     exited    Load/Save Screen Backlight>

My /proc/cmdline:

[user@alp2 ~]$ cat /proc/cmdline
BOOT_IMAGE=/boot/vmlinuz-linux-zen rw quiet splash vga=current loglevel=3 rd.systemd.show_status=auto rd.udev.log_priority=3 vt.global_cursor_default=0 root=UUID=2262be98-7357-43a0-b220-6e799740f371 rd.luks.name=e3da0913-c5d9-4f33-8b49-99137aa0ecc0=rdsk resume=UUID=5d773613-b446-4a5e-8744-fad473efb088
[user@alp2 ~]$

Last edited by OliD (2020-03-30 18:32:33)