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The USB persist feature allows devices that can retain their state when powered down to work across suspend/resume. This is in particular useful for USB drives. However, the persist feature can get in the way for devices that are unable to retain their state when power is lost. An example of such stateful devices are fingerprint readers where USB persist should be disabled to ensure userspace can detect whether the USB device had a power loss during system suspend. This will initially be used by the libfprint autosuspend hwdb. Closes: #20754 |
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| .. | ||
| 50-udev-default.rules.in | ||
| 60-autosuspend.rules | ||
| 60-block.rules | ||
| 60-cdrom_id.rules | ||
| 60-drm.rules | ||
| 60-evdev.rules | ||
| 60-fido-id.rules | ||
| 60-input-id.rules | ||
| 60-persistent-alsa.rules | ||
| 60-persistent-input.rules | ||
| 60-persistent-storage-tape.rules | ||
| 60-persistent-storage.rules | ||
| 60-persistent-v4l.rules | ||
| 60-sensor.rules | ||
| 60-serial.rules | ||
| 64-btrfs.rules.in | ||
| 70-joystick.rules | ||
| 70-memory.rules | ||
| 70-mouse.rules | ||
| 70-touchpad.rules | ||
| 75-net-description.rules | ||
| 75-probe_mtd.rules | ||
| 78-sound-card.rules | ||
| 80-drivers.rules | ||
| 80-net-setup-link.rules | ||
| 81-net-dhcp.rules | ||
| 99-systemd.rules.in | ||
| meson.build | ||
| README | ||
Files in this directory contain configuration for systemd-udev.service, a daemon that manages symlinks to device nodes, permissions of devices nodes, emits device events for userspace, and renames network interfaces. See man:udev(7) for an overview of the configuration file format, and man:systemd-udevd.service(8) for a description of service itself. Use 'systemd-analyze cat-config udev/rules.d' to display the effective config.