Bug 413491

Summary: Touch screen support is lacking. For example, you are required to tap twice to emulate a click.
Product: [Plasma] plasmashell Reporter: Loren Burkholder <loren>
Component: generalAssignee: David Edmundson <kde>
Status: RESOLVED NOT A BUG    
Severity: wishlist CC: nate, plasma-bugs-null
Priority: NOR    
Version First Reported In: 5.12.8   
Target Milestone: 1.0   
Platform: Kubuntu   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:

Description Loren Burkholder 2019-10-26 23:57:45 UTC
SUMMARY
KDE Plasma has lacking touch screen support. Ideally, with a touch screen, a single tap on the system menu should open the menu. However, a double tap is required--like the first tap moves the cursor and the second tap is the click of the mouse. This behavior is not limited to the system menu, of course, but is system-wide.


STEPS TO REPRODUCE
1. Run Plasma on a touchscreen computer.
2. Use the touch screen.
3. Get frustrated :/

SOFTWARE/OS VERSIONS
Kubuntu 18.04
KDE Plasma 5.12.8
KDE Frameworks ver. 5.44.0
Qt ver. 5.9.5
Linux kernel ver. 5.0.0-23-generic

ADDITIONAL INFORMATION
Computer: Lenovo Ideapad Flex 14-IWL
Comment 1 Nate Graham 2019-10-27 21:59:47 UTC
This doesn't match my experience at all. I have a touchscreen laptop and a single touch is mapped to single-click perfectly. Is that not what you're seeing? Is this limited to Plasma, or does it affect apps too?
Comment 2 Loren Burkholder 2019-10-28 21:21:27 UTC
This is a system-wide issue; absolutely everything is affected. For an example of exactly what happens, I will open the Application Launcher, switch to "Applications", click on "Settings", and open "System settings".

Double tap to open launcher
single tap to switch to applications
double tap to open settings submenu
double tap to open system settings

Maybe this is because I have a slightly older version of Plasma. What Plasma version do you have?
Comment 3 Nate Graham 2019-10-28 21:41:41 UTC
If literally everything is affected, it sounds very much like a driver issue. Plasma doesn't actually handle input. I would ordinarily recommend filing a bug on the Libinput driver, but since you're using an LTS version of your distro, the package versions of everything are going to be tool old for anyone to actually debug (this is part of why the concept of the LTS distro is a cruel joke IMO). Is there any chance you can upgrade to Kubuntu 19.10 and see if it still happens?
Comment 4 Loren Burkholder 2019-10-28 21:48:04 UTC
I might be able to upgrade. Is it possible to upgrade by running the installation from a USB stick and running the installer? I'm researching, and if it's possible, I'll do it.

P.S. Due to some restrictions, I can't just run an upgrade over the internet.
Comment 5 Nate Graham 2019-10-28 21:59:54 UTC
Hmm, not sure, sorry. You might try asking in an Ubuntu-specific forum.
Comment 6 Loren Burkholder 2019-10-28 22:00:32 UTC
I'll try that.
Comment 7 Bug Janitor Service 2019-11-12 04:33:09 UTC
Dear Bug Submitter,

This bug has been in NEEDSINFO status with no change for at least
15 days. Please provide the requested information as soon as
possible and set the bug status as REPORTED. Due to regular bug
tracker maintenance, if the bug is still in NEEDSINFO status with
no change in 30 days the bug will be closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
wiki located here:
https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

If you have already provided the requested information, please
mark the bug as REPORTED so that the KDE team knows that the bug is
ready to be confirmed.

Thank you for helping us make KDE software even better for everyone!
Comment 8 Loren Burkholder 2019-11-14 21:00:47 UTC
I upgraded and that fixed it.
Comment 9 Loren Burkholder 2019-11-14 21:01:18 UTC
(In reply to computersemiexpert from comment #8)
> I upgraded and that fixed it.

I should say that I upgraded Kubuntu.