Horizontal/vertical rotation miscalibrated on Linx 810 #27

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1. DansDesigns commented on Dec 28, 2021

   

   DansDesigns

   on Dec 28, 2021

   Last edited by DansDesigns

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   I'm having the same problem, everything works perfectly except the screen is 90 degrees out..
   Running Lubuntu 21.04 installed via the iso-respin from Linuxium..
   Does anyone have any suggestions on how to fix this issue?
   Thank you

   EDIT: I think the problem is due to these Tablets being Portrait by default, whereas most other tablets are Landscape by default..

   EDIT 2: I found this script that rotates the touch input with the screen: https://gist.github.com/mildmojo/48e9025070a2ba40795c, all we need to do now is sort the correct orientation..
2. DansDesigns commented on Jan 1, 2022

   

   DansDesigns

   on Jan 1, 2022

   Last edited by DansDesigns

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   Adjusting the following lines in displaymanager.cpp, allows the screen to rotate correctly...
   (lines 65 - 70)

   from:

   QHash<Orientation, Rotation> orientation2rotation { {TopUp, RR_Rotate_0}, {TopDown, RR_Rotate_180}, {LeftUp, RR_Rotate_90}, {RightUp, RR_Rotate_270}, };

   to:

   QHash<Orientation, Rotation> orientation2rotation { {TopUp, RR_Rotate_90}, {TopDown, RR_Rotate_270}, {LeftUp, RR_Rotate_0}, {RightUp, RR_Rotate_180}, };

   however the touch is not rotating correctly - I will remove the script mentioned in 'EDIT 2' and try to alter the current deployment settings...

   EDIT:

   Touchscreen now works correctly with the following changes made to rotateinput.cpp
   (lines 152 - 169)

   from:

   #ifdef USE_XINPUT static QHash<Orientation, QStringList> orientation_matrix_map { {TopUp, {"1", "0", "0", "0", "1", "0", "0", "0", "1"}}, {TopDown, {"-1", "0", "1", "0", "-1", "1", "0", "0", "1"}}, {LeftUp, {"0", "-1", "1", "1", "0", "0", "0", "0", "1"}}, {RightUp, {"0", "1", "0", "-1", "0", "1", "0", "0", "1"}}, }; auto orientation_matrix = orientation_matrix_map[orientation]; for(auto device: d->devices) { do_set_prop_xi2(d->display, device.id, None, 0, "Coordinate Transformation Matrix", orientation_matrix); } #else static QHash<Orientation, vector<float>> orientation_matrix_map { {TopUp, {1, 0, 0, 0, 1, 0, 0, 0, 1}}, {TopDown, {-1, 0, 1, 0, -1, 1, 0, 0, 1}}, {LeftUp, {0, -1, 1, 1, 0, 0, 0, 0, 1}}, {RightUp, {0, 1, 0, -1, 0, 1, 0, 0, 1}}, };

   to:

   #ifdef USE_XINPUT static QHash<Orientation, QStringList> orientation_matrix_map { {TopUp, {"0", "-1", "1", "1", "0", "0", "0", "0", "1"}}, {TopDown, {"0", "1", "0", "-1", "0", "1", "0", "0", "1"}}, {LeftUp, {"1", "0", "0", "0", "1", "0", "0", "0", "1"}}, {RightUp, {"-1", "0", "1", "0", "-1", "1", "0", "0", "1"}}, }; auto orientation_matrix = orientation_matrix_map[orientation]; for(auto device: d->devices) { do_set_prop_xi2(d->display, device.id, None, 0, "Coordinate Transformation Matrix", orientation_matrix); } #else static QHash<Orientation, vector<float>> orientation_matrix_map { {TopUp, {0, -1, 1, 1, 0, 0, 0, 0, 1}}, {TopDown, {0, 1, 0, -1, 0, 1, 0, 0, 1}}, {LeftUp, {1, 0, 0, 0, 1, 0, 0, 0, 1}}, {RightUp, {-1, 0, 1, 0, -1, 1, 0, 0, 1}}, };

   With both of these adjustments, my Linx8 Lubuntu 21.04 is running perfectly!
   I have found evdev-rce brilliant for emulating the hold-to-right-click on the Goodix Capacitive Touchscreens..
3. DansDesigns commented on Aug 31, 2022

   

   DansDesigns

   on Aug 31, 2022

   Last edited by DansDesigns

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   I can confirm the above changes work with Lubuntu 20.04, Lubuntu 21.04 and Zorin OS 16.1 running on Linx8 and Linx810.

   Full changes:
   run default build/install process, then browse to: ~/ScreenRotator/src/
   modify displaymanager.cpp
   modify rotateinput.cpp

   then rebuild..
   (in terminal run:)
   cd ScreenRotator/build
   cmake ..
   make all
   sudo make install

   restart the tablet and enjoy!