Jor*_*rts 5 graphics-tablet usbhid drivers 20.04
我正在从 Ubuntu 16.04 升级到 20.04。我有一个与我的电脑相连的绘图板，它 16.04 将笔识别为鼠标。但它在 20.04 中不起作用。两个版本的USB 设备输出相同：
T: Bus=04 Lev=02 Prnt=02 Port=00 Cnt=01 Dev#= 3 Spd=12 MxCh= 0
D: Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1
P: Vendor=172f ProdID=0027 Rev=01.50
S: Manufacturer=
S: Product=Digital Ink Pad
S: SerialNumber=01.00.00
C: #Ifs= 2 Cfg#= 1 Atr=80 MxPwr=500mA
I: If#=0x0 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage
I: If#=0x1 Alt= 0 #EPs= 1 Cls=03(HID ) Sub=00 Prot=00 Driver=usbhid
但是xinput list-props的结果却大不相同。在 16.04 给出
Device ' Digital Ink Pad':
Device Enabled (153): 1
Coordinate Transformation Matrix (155): 1.000000, 0.000000, 0.000000, 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
Device Accel Profile (281): 0
Device Accel Constant Deceleration (282): 1.000000
Device Accel Adaptive Deceleration (283): 1.000000
Device Accel Velocity Scaling (284): 10.000000
Device Product ID (272): 5935, 39
Device Node (273): "/dev/input/event3"
Evdev Axis Inversion (285): 0, 0
Evdev Axis Calibration (286): <no items>
Evdev Axes Swap (287): 0
Axis Labels (288): "Abs X" (278), "Abs Y" (279), "Abs Pressure" (280), "Rel Vert Wheel" (277)
Button Labels (289): "Button Left" (156), "Button Middle" (157), "Button Right" (158), "Button Wheel Up" (159), "Button Wheel Down" (160), "Button Horiz Wheel Left" (161), "Button Horiz Wheel Right" (162)
Evdev Scrolling Distance (290): 1, 1, 1
Evdev Middle Button Emulation (291): 1
Evdev Middle Button Timeout (292): 50
Evdev Third Button Emulation (293): 0
Evdev Third Button Emulation Timeout (294): 1000
Evdev Third Button Emulation Button (295): 3
Evdev Third Button Emulation Threshold (296): 20
Evdev Wheel Emulation (297): 0
Evdev Wheel Emulation Axes (298): 0, 0, 4, 5
Evdev Wheel Emulation Inertia (299): 10
Evdev Wheel Emulation Timeout (300): 200
Evdev Wheel Emulation Button (301): 4
Evdev Drag Lock Buttons (302): 0
但在 20.04 给出
Device ' Digital Ink Pad Mouse':
Device Enabled (155): 1
Coordinate Transformation Matrix (157): 1.000000, 0.000000, 0.000000, 0.000000, 1.000000, 0.000000, 0.000000, 0.000000, 1.000000
libinput Natural Scrolling Enabled (291): 0
libinput Natural Scrolling Enabled Default (292): 0
libinput Scroll Methods Available (293): 0, 0, 1
libinput Scroll Method Enabled (294): 0, 0, 0
libinput Scroll Method Enabled Default (295): 0, 0, 0
libinput Button Scrolling Button (296): 2
libinput Button Scrolling Button Default (297): 2
libinput Middle Emulation Enabled (298): 1
libinput Middle Emulation Enabled Default (299): 0
libinput Accel Speed (300): 0.000000
libinput Accel Speed Default (301): 0.000000
libinput Accel Profiles Available (302): 1, 1
libinput Accel Profile Enabled (303): 1, 0
libinput Accel Profile Enabled Default (304): 1, 0
libinput Left Handed Enabled (305): 0
libinput Left Handed Enabled Default (306): 0
libinput Send Events Modes Available (276): 1, 0
libinput Send Events Mode Enabled (277): 0, 0
libinput Send Events Mode Enabled Default (278): 0, 0
Device Node (279): "/dev/input/event3"
Device Product ID (280): 5935, 39
libinput Drag Lock Buttons (307): <no items>
libinput Horizontal Scroll Enabled (308): 1
根据xinput您提供的输出，驱动程序似乎从 更改evdev为libinput。
您可以尝试libinput通过添加以下内容来强制将设备视为平板电脑/usr/share/X11/xorg.conf.d/40-libinput.conf：
部分“InputClass”\n 标识符“evdev Tablet”\n MatchIsTablet“on”\n MatchDevicePath“/dev/input/event3” \n 驱动程序“evdev”\nEndSection\n
您可以尝试恢复到evdev.
确保xserver-xorg-input-evdev已安装该软件包。\xe2\x80\x82（这可能足够，也可能不够。）
sudo apt list xserver-xorg-input-evdev\nsudo apt install xserver-xorg-input-evdev\n
您可能需要禁用libinput.\xe2\x80\x82您可能需要将该Ignore选项添加到以下位置的多个部分/usr/share/X11/xorg.conf.d/40-libinput.conf：
部分“InputClass”\n 标识符“libinput 指针包罗万象”\n MatchIsPointer“on”\n MatchDevicePath“/dev/input/event*”\n 驱动程序“libinput”\n 选项“Ignore”“ on” \nEndSection\n
您可能需要将以下内容添加到/usr/share/X11/xorg.conf.d/10-evdev.conf：
部分“InputClass”\n 标识符“evdev Tablet”\n MatchIsTablet“on”\n MatchDevicePath“/dev/input/event3” \n 驱动程序“evdev”\nEndSection\n