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libusb / hidapi

A Simple cross-platform library for communicating with HID devices
https://libusb.info/hidapi/
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Recommended udev rules for hidraw stop working after device reconnection #411

Closed PAI5REECHO closed 2 years ago

PAI5REECHO commented 2 years ago

I'm using https://github.com/libusb/hidapi/blob/2aeb0688fa8c7b14cc767f7f13088f703487f754/udev/69-hid.rules#L15-L16 which works initially at boot, but when the device is unplugged and plugged in again it stops working until I run sudo udevadm control --reload-rules && sudo udevadm trigger. Is there a way I can get this rule to keep working with hot-plugged devices?

Youw commented 2 years ago

What order (number prefix) your udev.rules has?

Youw commented 2 years ago

Try: # udevadm monitor to see udev log

PAI5REECHO commented 2 years ago

What order (number prefix) your udev.rules has?

$ rg hidraw /etc/udev/rules.d/99-local.rules
3:KERNEL=="hidraw*", ATTRS{idVendor}=="239a", ATTRS{idProduct}=="80f4", TAG+="uaccess"
$ ls /etc/udev/rules.d/
00-path.rules              13-dm-disk.rules           69-bcache.rules                       80-udisks2.rules                 98-ipv6-privacy-extensions.rules
01-md-raid-creating.rules  51-android.rules           69-dm-lvm.rules                       90-libinput-fuzz-override.rules  99-ipv6-privacy-extensions.rules
10-dm.rules                63-md-raid-arrays.rules    69-md-clustered-confirm-device.rules  90-pipewire-alsa.rules           99-local.rules
11-dm-lvm.rules            64-md-raid-assembly.rules  80-libinput-device-groups.rules       95-dm-notify.rules               99-razer.rules
# udevadm monitor # plugs in device now:
KERNEL[37380.846057] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10 (usb)
KERNEL[37380.850205] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.0 (usb)
KERNEL[37380.850531] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.0/tty/ttyACM0 (tty)
KERNEL[37380.850554] bind     /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.0 (usb)
KERNEL[37380.850909] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.1 (usb)
KERNEL[37380.850925] bind     /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.1 (usb)
KERNEL[37380.851156] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.2 (usb)
KERNEL[37380.851257] add      /devices/virtual/workqueue/scsi_tmf_7 (workqueue)
KERNEL[37380.851316] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.2/host7 (scsi)
KERNEL[37380.851332] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.2/host7/scsi_host/host7 (scsi_host)
KERNEL[37380.851415] bind     /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.2 (usb)
KERNEL[37380.851716] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.3 (usb)
UDEV  [37380.852341] add      /devices/virtual/workqueue/scsi_tmf_7 (workqueue)
KERNEL[37380.852434] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.3/0003:239A:80F4.000D (hid)
KERNEL[37380.852494] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.3/usbmisc/hiddev0 (usbmisc)
KERNEL[37380.852547] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.3/0003:239A:80F4.000D/hidraw/hidraw6 (hidraw)
KERNEL[37380.852648] bind     /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.3/0003:239A:80F4.000D (hid)
KERNEL[37380.852662] bind     /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.3 (usb)
KERNEL[37380.853021] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.4 (usb)
KERNEL[37380.854312] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.4/sound/card4 (sound)
KERNEL[37380.854359] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.4/sound/card4/midiC4D0 (sound)
KERNEL[37380.854370] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.4/sound/card4/midi4 (sound)
KERNEL[37380.854397] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.4/sound/card4/dmmidi4 (sound)
KERNEL[37380.854405] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.4/sound/card4/seq-midi-4-0 (snd_seq)
KERNEL[37380.854517] bind     /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.4/sound/card4/seq-midi-4-0 (snd_seq)
KERNEL[37380.854531] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.4/sound/card4/controlC4 (sound)
KERNEL[37380.854544] bind     /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.4 (usb)
KERNEL[37380.854741] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.5 (usb)
KERNEL[37380.854756] bind     /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.5 (usb)
KERNEL[37380.854785] bind     /devices/pci0000:00/0000:00:14.0/usb2/2-10 (usb)
UDEV  [37380.855653] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10 (usb)
UDEV  [37380.863332] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.0 (usb)
UDEV  [37380.863362] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.2 (usb)
UDEV  [37380.863381] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.5 (usb)
UDEV  [37380.863641] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.1 (usb)
UDEV  [37380.865123] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.4 (usb)
UDEV  [37380.865143] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.2/host7 (scsi)
UDEV  [37380.865160] bind     /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.5 (usb)
UDEV  [37380.865177] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.3 (usb)
UDEV  [37380.865194] bind     /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.1 (usb)
UDEV  [37380.865208] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.3/usbmisc/hiddev0 (usbmisc)
UDEV  [37380.865889] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.2/host7/scsi_host/host7 (scsi_host)
UDEV  [37380.865922] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.4/sound/card4 (sound)
UDEV  [37380.865945] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.3/0003:239A:80F4.000D (hid)
UDEV  [37380.865966] bind     /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.2 (usb)
UDEV  [37380.868855] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.4/sound/card4/dmmidi4 (sound)
UDEV  [37380.868909] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.4/sound/card4/midiC4D0 (sound)
UDEV  [37380.868929] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.4/sound/card4/seq-midi-4-0 (snd_seq)
UDEV  [37380.869052] bind     /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.4/sound/card4/seq-midi-4-0 (snd_seq)
KERNEL[37380.869724] change   /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.4/sound/card4 (sound)
UDEV  [37380.870200] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.4/sound/card4/midi4 (sound)
UDEV  [37380.879691] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.3/0003:239A:80F4.000D/hidraw/hidraw6 (hidraw)
UDEV  [37380.880365] bind     /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.3/0003:239A:80F4.000D (hid)
UDEV  [37380.880965] bind     /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.3 (usb)
UDEV  [37380.885904] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.0/tty/ttyACM0 (tty)
UDEV  [37380.888875] bind     /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.0 (usb)
UDEV  [37380.892022] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.4/sound/card4/controlC4 (sound)
UDEV  [37380.892155] bind     /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.4 (usb)
UDEV  [37380.892195] bind     /devices/pci0000:00/0000:00:14.0/usb2/2-10 (usb)
UDEV  [37380.893704] change   /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.4/sound/card4 (sound)
KERNEL[37381.886366] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.2/host7/target7:0:0 (scsi)
KERNEL[37381.886391] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.2/host7/target7:0:0/7:0:0:0 (scsi)
KERNEL[37381.886399] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.2/host7/target7:0:0/7:0:0:0/scsi_device/7:0:0:0 (scsi_device)
KERNEL[37381.886409] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.2/host7/target7:0:0/7:0:0:0/bsg/7:0:0:0 (bsg)
KERNEL[37381.887062] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.2/host7/target7:0:0/7:0:0:0/scsi_disk/7:0:0:0 (scsi_disk)
UDEV  [37381.887352] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.2/host7/target7:0:0 (scsi)
UDEV  [37381.888132] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.2/host7/target7:0:0/7:0:0:0 (scsi)
UDEV  [37381.889729] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.2/host7/target7:0:0/7:0:0:0/scsi_device/7:0:0:0 (scsi_device)
UDEV  [37381.889790] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.2/host7/target7:0:0/7:0:0:0/bsg/7:0:0:0 (bsg)
UDEV  [37381.889803] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.2/host7/target7:0:0/7:0:0:0/scsi_disk/7:0:0:0 (scsi_disk)
KERNEL[37381.892302] add      /devices/virtual/bdi/8:64 (bdi)
UDEV  [37381.892326] add      /devices/virtual/bdi/8:64 (bdi)
KERNEL[37381.900629] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.2/host7/target7:0:0/7:0:0:0/block/sde (block)
KERNEL[37381.900658] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.2/host7/target7:0:0/7:0:0:0/block/sde/sde1 (block)
KERNEL[37381.903362] bind     /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.2/host7/target7:0:0/7:0:0:0 (scsi)
UDEV  [37381.930615] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.2/host7/target7:0:0/7:0:0:0/block/sde (block)
UDEV  [37382.035017] add      /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.2/host7/target7:0:0/7:0:0:0/block/sde/sde1 (block)
UDEV  [37382.036207] bind     /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.2/host7/target7:0:0/7:0:0:0 (scsi)
KERNEL[37382.086734] change   /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.2/host7/target7:0:0/7:0:0:0/block/sde/sde1 (block)
UDEV  [37382.133158] change   /devices/pci0000:00/0000:00:14.0/usb2/2-10/2-10:1.2/host7/target7:0:0/7:0:0:0/block/sde/sde1 (block)
Youw commented 2 years ago

99-local.rules

TAG+="uaccess"

https://github.com/libusb/hidapi/blob/c95795ab5c9409994be7f51e2c6c97a6836e9616/udev/69-hid.rules#L20

PAI5REECHO commented 2 years ago

I did read that before but my distro doesn't have any such 73-seat-late.rules (see output of ls /etc/udev/rules.d/ above) so I'm confused :(

PAI5REECHO commented 2 years ago

https://github.com/libusb/hidapi/blob/c95795ab5c9409994be7f51e2c6c97a6836e9616/udev/69-hid.rules#L20

Does this literally just mean it needs to be in a rules file < 73 even I don't have a 73- prefixed file?

Youw commented 2 years ago

It is a part of systemd, not just some distro.

On Debian systems it is located at /lib/udev/rules.d/73-seat-late.rules.

Does this literally just mean

Documentation is pretty clear about what to do with reference about why it has to be done that way.

PAI5REECHO commented 2 years ago

Works, thanks :)