Created attachment 1156290 [details] xinput list props Description of problem: The touchscreen works however the horizontal movement is inverted (x axis). The vertical movement is ok. Additional info: Looking at the driver code "https://github.com/torvalds/linux/blob/master/drivers/input/touchscreen/goodix.c" I see a Boolean "inverted_x" so fixing the issue seems to be an easy thing but I have no idea how to do it. Kernel 4.5.3-300.fc24.x86_64 Touchscreen is Goodix Capacitive TouchScreen (attached the xinput list-props output) Tablet is Cube iWork10 (Chinese brand) with Intel Atom cpu
This looks like a kernel bug then. Could you attach your current dmesg (after a fresh boot) and the output of acpidump (as root)? This way I might be able to check if it's easy or not to change that.
I think I'll also need to have your dmidecode information to be able to create a kernel patch for you.
Created attachment 1156709 [details] dmesg after a fresh boot
Created attachment 1156710 [details] acpidump
Created attachment 1156712 [details] dmidecode
Created attachment 1156713 [details] lshw
Is there a list of devices that the kernel checks to see if it should invert or not? or is it more complicated than that?
(In reply to Fahad Alduraibi from comment #7) > Is there a list of devices that the kernel checks to see if it should invert > or not? or is it more complicated than that? That's basically what I need to do in the driver. Add such a list and put your tablet in it, There doesn't seem to be anything useful in the acpidump that would tell us how the device is installed, so a dmi_match should be our be solution.
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The same problem still exits in F25 and also F26 beta
fwiw, this is the matrix to intvert the x axis, as a workaround until the kernel fix is in: xinput set-prop "ELAN Touchscreen" "libinput Calibration Matrix" -1 0 1 0 1 0 0 0 1 replace the device name with yours, and make it an xorg.conf.d snippet for it to be persistent
This is still an issue on the latest kernel (4.14.13) on Fedora 27, with the same tablet. There is already a quirk in the goodix driver; perhaps another one should be added?
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