qmk/qmk_firmware

Modifier keys LCTL, LSFT etc. not working under windows remote desktop

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#25,979 建立於 2026年1月27日

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描述

Issue Description

Hi, in my keymap I use e.g. LCTL(KC_V) and LSFT(KC_MINS) which work fine under Windows. However, when using Remote Desktop, the modifiers are no longer recognized, i.e. LCTL(KC_V) outputs KC_V only etc.

I assume that Remote Desktop requires some additional delay between pressing LCTL and KC_V.

I tried

void oneshot_mods_changed_user(uint8_t mods) {
	send_keyboard_report();
}

but without success.

Is there any other way?

貢獻者指南

技術棧
c
領域
backend
議題類型
bug
難度面向新貢獻者的預計實作難度，1 表示很小改動，5 表示專家級工作。
4
預計時間有經驗貢獻者完成調查、實作、測試並準備 pull request 的粗略時間範圍。
1-2 days
活動狀態議題目前的可參與程度：新鮮、活躍、陳舊、阻塞或等待維護者輸入。
active
清晰度議題是否清楚說明預期改動、驗收標準和下一步。
mostly clear
前置要求
C programmingQMK firmware basicsHID protocol knowledge
新手友善度1-100 的估計分數，表示該議題對首次貢獻者的友善程度。
30
研究方向
Investigate the QMK key processing pipeline for modifier keys, focusing on files like `quantum/process keycode/process mods.c` and `tmk core/common/keyboard.c`. The issue suggests that Remote Desktop requires a delay between pressing LCTL and KC V. Examine how modifiers are sent in the HID report and consider adding a configurable delay option. Test with varying delay values to find a reliable fix. Also check if there are any existing pull requests or discussions about Remote Desktop compatibility.