Hi,
I think am experiencing the same problem as @peter68 and @angel74 on my Boox Max2, but it seems it could be vendor/model specific.
I have connected my Logitech Craft keyboard via Bluetooth and all buttons seem to work fine, except the Enter key. Pressing Enter in the Menus, or any application, makes a mouse pointer appear and “click” in the middle of the screen. This behavior shows up everywhere, even in the Settings tab, so it is not related to a single application.
Because of this, my keyboard is totally unusable with the Max2.
I have looked at the Android keyboard layouts to see if I could simply remap the key.
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ES File Explorer File Manager > Left side menu > Local > Device > Navigare to system/usr/keylayout > Open Generic.kl (read only)
- line 50: key 28 ENTER
- line 118: key 96 NUMPAD_ENTER
- line 203: key 353 DPAD_ENTER
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External Keyboard Helper Demo > Advanced settings > Customize keymappings > Keyboard mapping > Customize keyboard mappings > Add new key mapping
- There you can press the button you would like to remap, and it shows which scancode it receives from the keyboard.
- Both the Logitech Craft and Microsoft Universal Foldable Keyboard seem to send key 28.
That’s as far as I got, but here are some related links I have found:
Same problem (not Boox devices)
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Nov 2014, Logitech K400 and K400+: Keyboard “Enter” key bug (last post in January this year)
Post on page 2:
Generic.kl file located at /system/usr/keylayout, assigning keyword ENTER to key 28
Generic.kl you will see that key 28 is mapped as DPAD_CENTER
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Oct 2016, Logitech K400: Android 6.0.1 Marschmallow - Wasser 64bit Firmware for Beelink R68 with Gigabit LAN, WIFI AP6335
“I also have a Microsoft wireless keyboard, and it works just fine with all my Android boxes, so there’s something weird about the Logitech keyboard.”
The poster says that pressing the function button at the same time as enter makes it behave as expected. Does not work for me, as there still is a mouse click on the center of the screen
This is the same Android version Max2 is running!
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November 2016, Logitech K830: Zidoo X1 II - Wireless keyboard enter key not working
People with both Logitech K400 and K830 report this problem
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November 2016, Logitech K830: Keyboard “Enter” key bug (Beelink i68 + Logitech K830)
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November 2018, Logitech K400: Problem with k400 enter key
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August 2017, Logitech K400+: Enter key doesn’t work on Android TV box
Response from Logitech support: “The Wireless Touch Keyboard K400 Plus is an HID compliant device that should work as a plug and play device on computers. It should also work on smart TV that has native support for HID devices. Can you please verify that your TV has support for HID devices?”
Possibly related
Summary
All of the keyboards I have found to be affected by this “middle of the screen click” are made by Logitech:
I do not know it the problem I (we?) have is related to the way you have configured Android, or if it is a Logitech problem which they will have to fix with a firmware update. Since the problem does not seem to be too common, given the amout of K400 that Logitech probably has sold, I am hoping it is the former, and that you can release a fix soon.
I love my Craft and the Microsoft keyboard is not nearly as usable, so I cannot use it for exetended periods of time. Connecting my keyboard to the Max2 is half the reason why I bought it, so please look into this.
TL;DR Logitech keyboards seem to be affected and since they are very popular I expect more Boox customers will run into this problem! Please try to find a fix.