Touch Screen Input not working

[Torsten85]

Hello,
I've no experience with cage nor with wayland, so I'm sorry if I'm missing something obvious.

I've a mouse and a touch screen connected to my raspberry pi, but only the mouse is recognized. The default raspberry desktop recognizes both devices.

Thanks in advance

[joggee-fr]

Hi @Torsten85,
Do you know which version of Cage you are running? Do you have any (debug) logs available?
Can you observe the input devices returned by the kernel e.g. using libinput list-devices command?

[Torsten85]

@joggee-fr Thanks for your quick response!

I'm running Cage version 0.1.4.
Running libinput debug-events I see all the touch events, so this is working.

This is the output from libinput list-devices:

Click me

Device:           WaveShare WaveShare
Kernel:           /dev/input/event3
Group:            1
Seat:             seat0, default
Size:             512x293mm
Capabilities:     touch
Tap-to-click:     n/a
Tap-and-drag:     n/a
Tap drag lock:    n/a
Left-handed:      n/a
Nat.scrolling:    n/a
Middle emulation: n/a
Calibration:      identity matrix
Scroll methods:   none
Click methods:    none
Disable-w-typing: n/a
Disable-w-trackpointing: n/a
Accel profiles:   n/a
Rotation:         n/a

Device:           Logitech K400 Plus
Kernel:           /dev/input/event4
Group:            2
Seat:             seat0, default
Capabilities:     keyboard pointer
Tap-to-click:     n/a
Tap-and-drag:     n/a
Tap drag lock:    n/a
Left-handed:      disabled
Nat.scrolling:    disabled
Middle emulation: disabled
Calibration:      n/a
Scroll methods:   button
Click methods:    none
Disable-w-typing: n/a
Disable-w-trackpointing: n/a
Accel profiles:   flat *adaptive
Rotation:         n/a

Device:           pwr_button
Kernel:           /dev/input/event0
Group:            3
Seat:             seat0, default
Capabilities:     keyboard
Tap-to-click:     n/a
Tap-and-drag:     n/a
Tap drag lock:    n/a
Left-handed:      n/a
Nat.scrolling:    n/a
Middle emulation: n/a
Calibration:      n/a
Scroll methods:   none
Click methods:    none
Disable-w-typing: n/a
Disable-w-trackpointing: n/a
Accel profiles:   n/a
Rotation:         n/a

Device:           vc4-hdmi-0
Kernel:           /dev/input/event1
Group:            4
Seat:             seat0, default
Capabilities:     keyboard pointer
Tap-to-click:     n/a
Tap-and-drag:     n/a
Tap drag lock:    n/a
Left-handed:      disabled
Nat.scrolling:    disabled
Middle emulation: n/a
Calibration:      n/a
Scroll methods:   *button
Click methods:    none
Disable-w-typing: n/a
Disable-w-trackpointing: n/a
Accel profiles:   flat *adaptive
Rotation:         n/a

Device:           vc4-hdmi-1
Kernel:           /dev/input/event2
Group:            5
Seat:             seat0, default
Capabilities:     keyboard pointer
Tap-to-click:     n/a
Tap-and-drag:     n/a
Tap drag lock:    n/a
Left-handed:      disabled
Nat.scrolling:    disabled
Middle emulation: n/a
Calibration:      n/a
Scroll methods:   *button
Click methods:    none
Disable-w-typing: n/a
Disable-w-trackpointing: n/a
Accel profiles:   flat *adaptive
Rotation:         n/a

[joggee-fr]

Version 0.1.4 is a bit old now. Last release is 0.1.5 and I remember a fix for touch events has been pushed even after this version. I don't know if it could fix your issue but it could be a good start if you can compile and test the very last commit (or at least 7ec7e3df2bfc2069219285ccca676327480fa471).

[Torsten85]

Thanks @joggee-fr , that did the trick!

Now I have to figure out how to rotate the screen (the -r options seems to be missing in the newer version)... and maybe rotate the touch input... and also hide the cursor 😉

But those tasks might be independend issues if I cannot figure it out.

[joggee-fr]

Take a look at wlr-randr or kanshi for the screen rotation.
Hiding cursor is also discussed in open issued #299.

[Torsten85]

@joggee-fr thanks for pointing me in the right direction.

One unrelated question: Is there a discord channel or something like that where I can ask for some guide, best practices? Using github issues feels kinda wrong and I've still a lot to learn.

[joggee-fr]

@Torsten85, I am not aware of any Discord or IRC channel for Cage.
wlroots has a dedicated IRC channel, see README (but I have never used it yet).
Is this issue to be closed now?

[Torsten85]

yes thank you

[OctopusET]

@joggee-fr what about making new channel #cage at the liberachat?

[joggee-fr]

@OctopusET, I am not a Libera chat user so I can't say.

[denysvitali]

Can confirm: touch input is not working on Cage 0.1.5: I had to compile Cage from main to make it work.

Can you please create a release 0.1.6 so that others will have the fix too? Thanks!

[mpfaff]

Can confirm: touch input is not working on Cage 0.1.5: I had to compile Cage from main to make it work.

Can you please create a release 0.1.6 so that others will have the fix too? Thanks!

Also not working for me on 0.1.5. On every touch event this error is printed:

[ERROR] [types/seat/wlr_seat_touch.c:191] could not create touch point

@denysvitali, can you confirm that is the same error you saw and that it is fixed on main?

[denysvitali]

Sorry. I can't confirm (I don't remember the exact error message) and I'll not be able to check for at least 2 weeks :S