Compatibility Report

• Name of the game with compatibility issues:
• Steam AppID of the game: 1222730 (Star Wars Squadrons)

System Information

• GPU: RTX 3070
• Video driver version: NVIDIA 590.48.1
• Kernel version: 6.19.6-zen1-1-zen
• System Report & Logs: https://gist.github.com/odelik/5c97440c047909d107e1cd3a10bf23f0
• Proton version: GE-Proton10-32

I confirm:

• [x] that I haven't found an existing compatibility report for this game.
• [x] that I have checked whether there are updates for my system available.

Symptoms

When multiple non-joystick HID devices (cooler, headset, keyboard, mouse) are connected and occupy lower hidraw indices than a flight stick, dinput8_EnumDevices fails to enumerate the joystick. The device is correctly detected by the OS and accessible with correct permissions, but the game never sees it.

• Flight stick correctly detected by OS (lsusb, ls /dev/hidraw*)
• /dev/hidraw7 has correct 0666 permissions
• PROTON_ENABLE_HIDRAW=0x3344/0x43f4 set in launch options
• GE-Proton correctly creates hidraw device internally
• Flight stick does NOT appear in game's control settings

Reproduction

1. Connect a HOTAS/flight stick alongside additional USB HID devices
2. Verify flight stick appears at hidraw index greater than 2 or higher
3. Ensure all hidraw devices have 0666 permissions
4. Set launch options: PROTON_ENABLE_HIDRAW=0x3344/0x43f4 %command%
5. Launch Star Wars Squadrons (app ID 1222730)
6. Open controls settings and observe that the flight stick will not appear
7. Run with
8. Observe hid_joystick_device_open index 0, guid {00000000...} in log

Log Evidence

Wine correctly discovers the device:

00c4:trace:hid:hidraw_device_create dev 0x7f..., node "/dev/hidraw7", 
  desc {vid 3344, pid 43f4, version 0100, input 0, is_hidraw 1, bus_type 1}
00c4:trace:hid:bus_main_thread creating hidraw device 3344:43f4 
  with usages 0001:0004
00c4:trace:hid:driver_add_device Adding device to PDO ..., 
  id L"USB\\VID_3344&PID_43F4&MI_00"\\L"256&FF&0&0&0"

But DirectInput enumeration fails:

0138:trace:dinput:dinput8_EnumDevices iface ..., type 0x4, flags 0x1
0138:trace:dinput:hid_joystick_enum_device type 0x4, flags 0x1, 
  instance ..., version 0x800, index 0
0138:trace:dinput:hid_joystick_device_open index 0, 
  guid {00000000-0000-0000-0000-000000000000}

This pattern repeats identically on every launch across multiple
Proton log captures. The enumeration never progresses beyond index 0
and never reaches my flight stick at hidraw7. Even when non-joystick hidraw devices had Permission denied errors
in testing, the same null GUID was observed:

00c4:trace:hid:maybe_add_devnode Unable to open "/dev/hidraw2", 
  ignoring: Permission denied
00c4:trace:hid:maybe_add_devnode Unable to open "/dev/hidraw1", 
  ignoring: Permission denied

Potential Root Cause

Based upon my interpretation of the logs, it looks like hid_joystick_enum_device in dlls/dinput/joystick_hid.c stops
iterating when it encounters a non-joystick device at index 0,
returning a null GUID instead of continuing to higher indices where
the joystick resides. This is consistent across all executions
regardless of whether the non-joystick devices are accessible or
return permission denied.

Workaround

Restricting non-joystick hidraw devices to root-only 0600 permissions
via udev rules causes Wine to skip them during enumeration, allowing
it to reach the flight stick at hidraw7.

Below are the udev rules I have added on my system:

/etc/udev/rules.d/60-virpil-input.rules:

SUBSYSTEM=="hidraw", ATTRS{idVendor}=="3344", MODE="0666", TAG+="uaccess"
SUBSYSTEM=="usb", ATTRS{idVendor}=="3344", MODE="0666", TAG+="uaccess"

/etc/udev/rules.d/60-nzxt-input.rules:

SUBSYSTEM=="hidraw", ATTRS{idVendor}=="1e71", MODE="0600"

/etc/udev/rules.d/60-steelseries-input.rules:

SUBSYSTEM=="hidraw", ATTRS{idVendor}=="1038", MODE="0600"

Related Issues

• ValveSoftware/Proton#9034
• systemd/systemd#22681