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linux-surface / iptsd

Userspace daemon for Intel Precise Touch & Stylus
GNU General Public License v2.0
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Calibrating Touch Screen on Surface Pro 5 (SP5) not working #94

Closed ArPhil closed 1 year ago

ArPhil commented 1 year ago

Hi,

I tried to follow the instructions provided on the [wiki] (https://github.com/linux-surface/iptsd/wiki/Calibrating-iptsd) for calibrating the touchscreen. I noticed, that neither the iptsd-find-hidraw nor the iptsd-calibrate binaries are available on my system:

Linux surfux 6.0.6-surface #1 SMP PREEMPT_DYNAMIC Thu Nov 3 13:54:24 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux

PRETTY_NAME="Ubuntu 22.04.1 LTS" NAME="Ubuntu" VERSION_ID="22.04" VERSION="22.04.1 LTS (Jammy Jellyfish)" VERSION_CODENAME=jammy ID=ubuntu ID_LIKE=debian

I installed iptsd from the linux-surface repository as instructed (see here), so it looks the required binaries do NOT come with the iptsd package via sudo apt install iptsd.

As alternative, I uninstalled iptsd via sudo apt purge iptsd and installed the lasted iptsd build as described here via sudo dpkg -i iptsd_0.5.1-1_amd64.deb. So the above mentioned binaries are availabe now, but iptsd-find-hidraw returns nothing / empty string and therefore I cannot exectue iptsd-calibrate since it expects the ID.

What is the proper way of calibrating the touchscreen when iptsd has been installed via the linux-surface repository?

Any help is highly appreciated! :-)

StollD commented 1 year ago

Yes, these are only there if you build iptsd from the master branch. In which case you also need to build and install the IPTS kernel driver from source (https://github.com/linux-surface/intel-precise-touch).

I will make this more clear in the wiki page, sorry.

Calibrating the iptsd from the repository isnt really possible because its a very old version of iptsd, where a lot of variables are hardcoded (and some check for palm rejection are actually broken iirc). I am working on getting the code in the master branch ready for a release but its still not quite there yet.

ArPhil commented 1 year ago

@StollD , thanks for taking the time and the rapid feedback! That now explains to me, why some of the changes I did in /etc/ipts.conf did not show any effects on my Surface, since I used the repository version of iptsd. I will try to build and install the IPTS kernel driver from source on occasion.

Again, thanks for all the great work and effort! 😃