[BUG] FTSC1000:00 2808:5662 touchscreen not working until HID modules reloaded (Huawei MateBook 14 2024)

Hello,

On a Huawei MateBook 14 (2024) with Arch Linux and kernel 6.16.7, the built-in OLED touchscreen
(FTSC1000:00 2808:5662) is detected but does not generate any touch or pen events until HID modules
are reloaded.

Steps to reproduce:
1. Boot kernel 6.16.7 (vanilla Arch package).
2. Touchscreen appears as /dev/input/event5, stylus as /dev/input/event6.
3. dmesg shows:
   i2c_hid_acpi i2c-FTSC1000:00: failed to get a report from device: -11
   hid-multitouch 0018:2808:5662.0002: failed to fetch feature 5
   hid-multitouch 0018:2808:5662.0002: failed to fetch feature 12
4. evtest shows ABS ranges but no events when touching.
5. After running:
   modprobe -r i2c_hid_acpi i2c_hid hid_multitouch
   modprobe i2c_hid_acpi hid_multitouch
   touchscreen and stylus work normally and produce multitouch + pen events.

Hardware:
- Huawei MateBook 14 (2024), 14.2" 2880x1920 OLED touchscreen
- Touch controller: FTSC1000:00 2808:5662

Kernel: 6.16.7-arch1-1
Firmware: linux-firmware up to date (Sep 2025)

It seems this FTSC1000 variant may need a quirk in hid-multitouch or i2c_hid_acpi.

Please advise if more logs are needed. I can provide full dmesg, libinput list-devices,
and evtest output before and after module reload.

Best regards,
Vladimir Staykov





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