Unmet dependencies for package xserver-xorg-input-tslib

[aoi]

Howdy folks,

I'd like to use the tslib input driver for X but I'm having trouble installing it on Raspbian Jessie.

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$ sudo apt-get install xserver-xorg-input-tslib
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
  xserver-xorg-input-tslib : Depends: xorg-input-abi-21
E: Unable to correct problems, you have held broken packages.

Indeed xorg-input-abi-21 isn't available for installation:

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$ sudo apt-get install xorg-input-abi-21
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Package xorg-input-abi-21 is a virtual package provided by:
  xserver-xorg-core 2:1.16.4-1+deb8u1 [Not candidate version]

E: Package 'xorg-input-abi-21' has no installation candidate

I wonder, who should I report this to, and can anyone suggest a workaround?

[ShiftPlusOne]

In general, you'd report such issues here:
https://github.com/RPi-Distro/repo/issues

[aoi]

Thanks for that

It looks like the problem is not so simple. I forced installation of xserver-xorg-input-tslib but now attempting to load it with X gives me error:

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[  5751.396] (II) LoadModule: "tslib"
[  5751.396] (II) Loading /usr/lib/xorg/modules/input/tslib_drv.so
[  5751.397] (II) Module tslib: vendor="X.Org Foundation"
[  5751.397] 	compiled for 1.15.99.904, module version = 0.0.1
[  5751.397] 	Module class: X.Org XInput Driver
[  5751.397] 	ABI class: X.Org XInput driver, version 21.0
[  5751.397] (EE) module ABI major version (21) doesn't match the server's version (22)
[  5751.397] (II) UnloadModule: "tslib"
[  5751.397] (II) Unloading tslib
[  5751.397] (EE) Failed to load module "tslib" (module requirement mismatch, 0)
[  5751.397] (EE) No input driver matching `tslib'

Specifically the line "module ABI major version (21) doesn't match the server's version (22)"

So it looks like the package is not installable for good reason!

[ShiftPlusOne]

It's fairly simple. I believe it's just a matter of rebuilding the package against the appropriate version of xorg and updating the abi dependency, if it doesn't happen automatically. No need to report the issue elsewhere, that was just so that I don't forget about it. I'll fix it now.

[ShiftPlusOne]

I've noticed that the package is not available in Debian, and was wondering why.

I recommend taking a look at this:
https://bugs.debian.org/cgi-bin/bugrepo ... bug=736160

I've rebuilt and uploaded it, but won't guarantee that it works.

[aoi]

ShiftPlusOne thank you for taking the time to look at the issue.

I removed my compiled xf86-input-tslib attempt, and:

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sudo apt-get update
sudo apt-get install xserver-xorg-input-tslib

Then rebooted to be absolutely certain. In ~/.local/share/xorg/Xorg.0.log it seems to load successfully:

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[   137.289] (II) config/udev: Adding input device Pixart Imaging, Inc. Optical Touch (/dev/input/event3)
[   137.289] (**) Pixart Imaging, Inc. Optical Touch: Applying InputClass "tslib touchscreen"
[   137.289] (II) LoadModule: "tslib"
[   137.289] (II) Loading /usr/lib/xorg/modules/input/tslib_drv.so
[   137.290] (II) Module tslib: vendor="X.Org Foundation"
[   137.290] 	compiled for 1.18.4, module version = 0.0.1
[   137.290] 	Module class: X.Org XInput Driver
[   137.290] 	ABI class: X.Org XInput driver, version 22.1
[   137.290] (II) Using input driver 'tslib' for 'Pixart Imaging, Inc. Optical Touch'
[   137.290] (**) Pixart Imaging, Inc. Optical Touch: always reports core events
[   137.290] (**) Pixart Imaging, Inc. Optical Touch: always reports core events
[   137.292] (**) Option "config_info" "udev:/sys/devices/platform/soc/3f980000.usb/usb1/1-1/1-1.2/1-1.2:1.0/0003:093A:8020.0004/input/input3/event3"
[   137.292] (II) XINPUT: Adding extended input device "Pixart Imaging, Inc. Optical Touch" (type: TOUCHSCREEN, id 6)
[   137.292] xf86TslibControlProc
[   137.292] (**) Pixart Imaging, Inc. Optical Touch: (accel) keeping acceleration scheme 1
[   137.292] (**) Pixart Imaging, Inc. Optical Touch: (accel) acceleration profile 0
[   137.292] (**) Pixart Imaging, Inc. Optical Touch: (accel) acceleration factor: 2.000
[   137.292] (**) Pixart Imaging, Inc. Optical Touch: (accel) acceleration threshold: 4
[   137.292] xf86TslibControlProc

Unfortunately the touchscreen fails to work and on the console I see these messages:

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xf86TslibControlProc
xf86TslibControlProc
selected device is not a touchscreen I understand
xf86TslibControlProc

However the package may work for others with different touchscreens.

[ShiftPlusOne]

I think the software itself is abandoned and doesn't work with newer versions of Xorg without further tinkering.