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Bug 1075190 - [ThinkPad T440s] Disabling touchpad also disables hardware clicking
Summary: [ThinkPad T440s] Disabling touchpad also disables hardware clicking
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: gnome-settings-daemon
Version: 7.0
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: rc
: ---
Assignee: Rui Matos
QA Contact: Desktop QE
URL:
Whiteboard:
Depends On: 1093050 1093449
Blocks:
TreeView+ depends on / blocked
 
Reported: 2014-03-11 16:49 UTC by Michal Domonkos
Modified: 2017-07-03 15:03 UTC (History)
6 users (show)

Fixed In Version: gnome-settings-daemon-3.14.4-7.el7
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2015-11-19 08:24:58 UTC
Target Upstream Version:
Embargoed:


Attachments (Terms of Use)
dmesg (64.66 KB, text/plain)
2014-03-11 16:49 UTC, Michal Domonkos
no flags Details


Links
System ID Private Priority Status Summary Last Updated
GNOME Bugzilla 747504 0 None None None Never
Red Hat Product Errata RHBA-2015:2157 0 normal SHIPPED_LIVE control-center bug fix and enhancement update 2015-11-19 08:48:59 UTC

Description Michal Domonkos 2014-03-11 16:49:35 UTC
Created attachment 873212 [details]
dmesg

Description of problem:
Since the mouse buttons are implemented in the touchpad itself (by pressing it down) in this model of ThinkPad, once I disable the touchpad in GNOME Control Center the press-down feature of the touchpad gets disabled too.  Without that feature I cannot use the trackpoint because there's no way to emulate mouse clicks.

On the other hand, if I leave the touchpad enabled and press it down while using the trackpoint, the mouse cursor moves a little due to the touchpad registering a movement, which is also unacceptable in order to use the trackpoint.

It might as well be a hardware limitation so feel free to close this bug in such case.  Otherwise, I can imagine having a separate option to enable/disable press-down in GNOME Control Center.

Comment 1 Bastien Nocera 2014-06-12 15:37:41 UTC
We usually only show the touchpad disable switch when there is another input device available (whether a touchscreen or a mouse).

In this case, as the trackpoint is unusable without the touchpad, we should probably not even allow the touchpad to be disabled.

I don't really see a way to disable the touchpad but make its buttons still work though.

Peter will know better.

Comment 3 Rory P Haggard 2014-07-03 18:47:45 UTC
I'd like to request a 7.0.z release to make this work before 7.1.  Thanks!

Comment 4 Peter Hutterer 2014-08-08 01:28:20 UTC
Bastien: the synaptics patches now allow for physical clicks if the touchpad is set to the TOUCHPAD_OFF mode (in the synaptics-specific property).
See http://cgit.freedesktop.org/xorg/driver/xf86-input-synaptics/commit/?id=dc5474964d4ec73b5c324961026e1037bb344946

The problem is that g-s-d disables the device altogether and that way the driver doesn't get any events. The best solution to that would be to set the "Synaptics Off" property instead of calling set_device_enabled(). You'd get wakeups because the driver still gets and processes events, just discards them, so if you want to avoid that you could do this conditional on the "Synaptics Secondary Soft Button Areas" property being present and filled with non-zero values. That way all other laptops aren't affected by this.

Comment 6 Ondrej Holy 2015-04-08 12:27:28 UTC
This is actually gnome-settings-daemon bug. The patch to fix this issue has been attached upstream for a review. Necessary xorg-x11-drv-synaptics changes was also pushed as a part of Bug 1093050.

Comment 10 errata-xmlrpc 2015-11-19 08:24:58 UTC
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2015-2157.html


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