大約在 2026-02 重灌系統，之後三月用到手寫板，才發現問題，就是之前多年，手寫板會自動對應其板面左半邊與右半邊各在筆電主螢幕及外接螢幕，我從未設定過。
但 2026-03 發現，，無論如何測試，手寫板的範圍，只能在筆電螢幕，無法想之前一樣，可以移動到延伸螢幕，這對我教學非常困擾。
收尋後，網路建議我安裝 Huion 官方驅動程式，我安裝後（如下圖），看起來以為是手寫板涵蓋兩個螢幕，事實上，依然無效。
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--2020/09/06
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HUION INSPIROY H950P 繪圖板
商品ID：DCAV23-A9009CALM-000
1件 $2,990 2020/09/08
訂單編號: HUION INSPIROY H640P 繪圖板
商品ID：DCAV23-A9009CA4Q-000
1件 $1,980 2022/06/07
由[大智通-電子商務]出貨 87716079184
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To search: linux 接上 huion 手寫板 無法到延伸螢幕
ABetterXinputCalibrator : A graphic tablet / touchscreen calibrator with multi-monitor support
ABetterXinputCalibrator：一款支援多螢幕的繪圖板/觸控螢幕校正器
$ xrandr
Screen 0: minimum 8 x 8, current 5760 x 2160, maximum 32767 x 32767
DP-0 disconnected (normal left inverted right x axis y axis)
DP-1 disconnected (normal left inverted right x axis y axis)
HDMI-0 connected 3840x2160+0+0 (normal left inverted right x axis y axis) 697mm x 392mm
3840x2160 60.00 + 59.94 50.00 29.98* 29.97 25.00 23.98
2560x1440 59.95
1920x2160 59.99
1920x1080 60.00 59.94 50.00
1680x1050 59.95
1440x900 59.89
1280x1024 75.02 60.02
1280x960 60.00
1280x720 60.00 59.94 50.00
1024x768 75.03 70.07 60.00
800x600 75.00 72.19 60.32 56.25
720x576 50.00
720x480 59.94
640x480 75.00 72.81 59.94 59.93
DP-2 connected primary 1920x1080+3840+747 (normal left inverted right x axis y axis) 344mm x 193mm
1920x1080 60.00*+ 144.00
eDP-1-1 disconnected (normal left inverted right x axis y axis)
DisplayPort-1-1 disconnected (normal left inverted right x axis y axis)
DisplayPort-1-2 disconnected (normal left inverted right x axis y axis)
DisplayPort-1-3 disconnected (normal left inverted right x axis y axis)
DisplayPort-1-4 disconnected (normal left inverted right x axis y axis)
DisplayPort-1-5 disconnected (normal left inverted right x axis y axis)
DisplayPort-1-6 disconnected (normal left inverted right x axis y axis)
DisplayPort-1-7 disconnected (normal left inverted right x axis y axis)
DisplayPort-1-8 disconnected (normal left inverted right x axis y axis)
