Public bug reported:
Using a mouse this problem started happening in the past week or 2 for me.
When middle button emulation is ticked, if you drag the timeout slider to the
longest time, release, and try to drag it back to the shortest time, the cursor
will not click down until a second or 2 after you clicked down with your mouse,
and the cursor will begin clicking where-ever the cursor was after that delay.
It causes another problem which is the main problem for me: I keep the timeout
setting to the shortest as that's all I need to click both buttons to simulate
a middle click. However, when using left click and holding it down (e.g. to
highlight text) it now sometimes 'glitches' and the system thinks I let go of
the left mouse button even when I didn't. The same thing happens if I switch
left and right click so I'm holding right mouse button drag in accessibility
settings. This causes my highlight selection to get reset and start
highlighting again from where it glitched.
This glitching seems to be solved or at least non-apparent when I uncheck the
'use middle mouse button emulation' checkbox.
I also notice sometimes the left mouse click doesn't work - it doesn't
actually click.
Configuration:
I'm running Kubuntu 14.04 LTS 64bit
Linux 3.16.0-38-generic #52~14.04.1-Ubuntu SMP
gpointing-device-settings is at 1.5.1-6ubuntu2 same version for the past few
months/year
I have not changed the gpointing-device-settings package in the last few weeks,
while I think this problem started occurring in the past week (in June), so it
may be related to upstream package changes. This is my apt history for the last
couple of weeks (/var/log/apt/history.log):
--------------------------------------------
Start-Date: 2015-05-23 07:42:04
Upgrade: virtualbox:amd64 (4.3.10-dfsg-1ubuntu4, 4.3.10-dfsg-1ubuntu5),
virtualbox-dkms:amd64 (4.3.10-dfsg-1ubuntu4, 4.3.10-dfsg-1ubuntu5),
virtualbox-qt:amd64 (4.3.10-dfsg-1ubuntu4, 4.3.10-dfsg-1ubuntu5)
End-Date: 2015-05-23 07:45:19
Start-Date: 2015-05-25 17:43:46
Commandline: apt-get install padre
Install: libclass-adapter-perl:amd64 (1.07-1, automatic), libaliased-perl:amd64
(0.31-1, automatic), libclass-unload-perl:amd64 (0.08-1, automatic),
libfile-pushd-perl:amd64 (1.005-1, automatic), libmodule-metadata-perl:amd64
(1.000019-1, automatic), libparams-util-perl:amd64 (1.07-1build1, automatic),
libpadwalker-perl:amd64 (1.98-1, automatic),
libcpan-meta-requirements-perl:amd64 (2.125-1, automatic),
libdevel-refactor-perl:amd64 (0.05-1, automatic), cpanminus:amd64 (1.7001-1,
automatic), libclass-xsaccessor-perl:amd64 (1.19-1build1, automatic),
libtext-findindent-perl:amd64 (0.10-1, automatic), libwx-perl:amd64 (0.9922-2,
automatic), libcpan-distnameinfo-perl:amd64 (0.12-1, automatic),
libwxbase2.8-dev:amd64 (2.8.12.1+dfsg-2ubuntu2, automatic),
liborlite-perl:amd64 (1.98-1, automatic), libfile-homedir-perl:amd64 (1.00-1,
automatic), libwx-perl-processstream-perl:amd64 (0.32-1, automatic),
libwxgtk2.8-dev:amd64 (2.8.12.1+dfsg-2ubuntu2, automatic),
libfile-slurp-perl:amd64 (9999.19
-4, automatic), libtext-patch-perl:amd64 (1.8-1, automatic), ack-grep:amd64
(2.12-1, automatic), liblocal-lib-perl:amd64 (1.008023-1, automatic),
libppi-perl:amd64 (1.215-1, automatic), wx2.8-headers:amd64
(2.8.12.1+dfsg-2ubuntu2, automatic), libparse-errorstring-perl-perl:amd64
(0.19-1, automatic), libterm-readline-gnu-perl:amd64 (1.20-2build2, automatic),
libnumber-compare-perl:amd64 (0.03-1, automatic), libdevel-dumpvar-perl:amd64
(1.06-1, automatic), liborlite-migrate-perl:amd64 (1.10-1, automatic),
libfile-find-rule-perl:amd64 (0.33-1, automatic), libpod-pom-perl:amd64
(0.29-1, automatic), libyaml-tiny-perl:amd64 (1.56-1, automatic),
libtask-weaken-perl:amd64 (1.04-1, automatic), liblocale-msgfmt-perl:amd64
(0.15-1, automatic), libppix-regexp-perl:amd64 (0.036-1, automatic),
libdebug-client-perl:amd64 (0.29-1, automatic), libio-socket-ip-perl:amd64
(0.25-3, automatic), libppix-editortools-perl:amd64 (0.18-1, automatic),
libwxgtk-media2.8-dev:amd64 (2.8.12.1+dfsg-2ubuntu2, autom
atic), libclass-inspector-perl:amd64 (1.28-1, automatic),
libalien-wxwidgets-perl:amd64 (0.64+dfsg-2, automatic),
libpath-class-perl:amd64 (0.33-1, automatic), libcpan-meta-perl:amd64
(2.133380-2, automatic), libcpan-meta-check-perl:amd64 (0.007-1, automatic),
libipc-run3-perl:amd64 (0.046-1, automatic), libtext-glob-perl:amd64 (0.09-1,
automatic), libfile-next-perl:amd64 (1.12-1, automatic),
libfile-which-perl:amd64 (1.09-1, automatic), libfile-remove-perl:amd64
(1.52-1, automatic), libpod2-base-perl:amd64 (0.043-1, automatic),
libwx-scintilla-perl:amd64 (0.38-1build1, automatic), libtext-diff-perl:amd64
(1.41-1, automatic), libcapture-tiny-perl:amd64 (0.24-1, automatic),
libfile-sharedir-perl:amd64 (1.03-1, automatic), libsort-versions-perl:amd64
(1.5-4, automatic), libstring-shellquote-perl:amd64 (1.03-1, automatic),
libmodule-cpanfile-perl:amd64 (1.0002-1, automatic),
libtemplate-tiny-perl:amd64 (1.12-1, automatic), libpod-abstract-perl:amd64
(0.20-1, automatic), padre:amd64 (1.
00+dfsg-1), libparse-exuberantctags-perl:amd64 (1.01-1build3, automatic),
libprobe-perl-perl:amd64 (0.03-1, automatic), libparse-cpan-meta-perl:amd64
(1.4409-1, automatic), libmodule-manifest-perl:amd64 (1.08-1, automatic),
libmodule-starter-perl:amd64 (1.620+dfsg-1, automatic)
End-Date: 2015-05-25 17:45:04
Start-Date: 2015-05-27 07:51:50
Upgrade: libldap2-dev:amd64 (2.4.31-1+nmu2ubuntu8, 2.4.31-1+nmu2ubuntu8.1),
libldap-2.4-2:amd64 (2.4.31-1+nmu2ubuntu8, 2.4.31-1+nmu2ubuntu8.1),
libldap-2.4-2:i386 (2.4.31-1+nmu2ubuntu8, 2.4.31-1+nmu2ubuntu8.1)
End-Date: 2015-05-27 07:51:59
Start-Date: 2015-06-01 17:15:55
Commandline: apt-get install jpegoptim
Install: jpegoptim:amd64 (1.3.0-1ubuntu1)
End-Date: 2015-06-01 17:16:13
Start-Date: 2015-06-02 07:44:49
Upgrade: libssl1.0.0:amd64 (1.0.1f-1ubuntu2.11, 1.0.1f-1ubuntu2.12),
libssl1.0.0:i386 (1.0.1f-1ubuntu2.11, 1.0.1f-1ubuntu2.12), libssl-dev:amd64
(1.0.1f-1ubuntu2.11, 1.0.1f-1ubuntu2.12), libssl-doc:amd64 (1.0.1f-1ubuntu2.11,
1.0.1f-1ubuntu2.12), openssl:amd64 (1.0.1f-1ubuntu2.11, 1.0.1f-1ubuntu2.12)
End-Date: 2015-06-02 07:45:06
Start-Date: 2015-06-04 08:04:51
Upgrade: libqt5concurrent5:amd64 (5.2.1+dfsg-1ubuntu14.2,
5.2.1+dfsg-1ubuntu14.3), qt5-qmake:amd64 (5.2.1+dfsg-1ubuntu14.2,
5.2.1+dfsg-1ubuntu14.3), libqt4-xml:amd64 (4.8.5+git192-g085f851+dfsg-2ubuntu4,
4.8.5+git192-g085f851+dfsg-2ubuntu4.1), libqt4-xml:i386
(4.8.5+git192-g085f851+dfsg-2ubuntu4, 4.8.5+git192-g085f851+dfsg-2ubuntu4.1),
libqt4-network:amd64 (4.8.5+git192-g085f851+dfsg-2ubuntu4,
4.8.5+git192-g085f851+dfsg-2ubuntu4.1), libqt4-network:i386
(4.8.5+git192-g085f851+dfsg-2ubuntu4, 4.8.5+git192-g085f851+dfsg-2ubuntu4.1),
libqt4-sql-mysql:amd64 (4.8.5+git192-g085f851+dfsg-2ubuntu4,
4.8.5+git192-g085f851+dfsg-2ubuntu4.1), libqt4-sql-mysql:i386
(4.8.5+git192-g085f851+dfsg-2ubuntu4, 4.8.5+git192-g085f851+dfsg-2ubuntu4.1),
qt5-default:amd64 (5.2.1+dfsg-1ubuntu14.2, 5.2.1+dfsg-1ubuntu14.3),
libqt4-sql:amd64 (4.8.5+git192-g085f851+dfsg-2ubuntu4,
4.8.5+git192-g085f851+dfsg-2ubuntu4.1), libqt4-sql:i386
(4.8.5+git192-g085f851+dfsg-2ubuntu4, 4.8.5+git192-g085f851+dfsg-2ubuntu4.1),
libqt
5sql5-sqlite:amd64 (5.2.1+dfsg-1ubuntu14.2, 5.2.1+dfsg-1ubuntu14.3),
libqt5opengl5:amd64 (5.2.1+dfsg-1ubuntu14.2, 5.2.1+dfsg-1ubuntu14.3),
qdbus:amd64 (4.8.5+git192-g085f851+dfsg-2ubuntu4,
4.8.5+git192-g085f851+dfsg-2ubuntu4.1), libqtcore4:amd64
(4.8.5+git192-g085f851+dfsg-2ubuntu4, 4.8.5+git192-g085f851+dfsg-2ubuntu4.1),
libqtcore4:i386 (4.8.5+git192-g085f851+dfsg-2ubuntu4,
4.8.5+git192-g085f851+dfsg-2ubuntu4.1), libqt4-qt3support:amd64
(4.8.5+git192-g085f851+dfsg-2ubuntu4, 4.8.5+git192-g085f851+dfsg-2ubuntu4.1),
t1utils:amd64 (1.37-2ubuntu1, 1.37-2ubuntu1.1), libqt4-svg:amd64
(4.8.5+git192-g085f851+dfsg-2ubuntu4, 4.8.5+git192-g085f851+dfsg-2ubuntu4.1),
libqt4-dbus:amd64 (4.8.5+git192-g085f851+dfsg-2ubuntu4,
4.8.5+git192-g085f851+dfsg-2ubuntu4.1), libqt4-dbus:i386
(4.8.5+git192-g085f851+dfsg-2ubuntu4, 4.8.5+git192-g085f851+dfsg-2ubuntu4.1),
libqt4-xmlpatterns:amd64 (4.8.5+git192-g085f851+dfsg-2ubuntu4,
4.8.5+git192-g085f851+dfsg-2ubuntu4.1), libqt4-xmlpatterns:i386 (4.8.5+git192-g0
85f851+dfsg-2ubuntu4, 4.8.5+git192-g085f851+dfsg-2ubuntu4.1),
libqt4-sql-sqlite:amd64 (4.8.5+git192-g085f851+dfsg-2ubuntu4,
4.8.5+git192-g085f851+dfsg-2ubuntu4.1), libqt4-opengl:amd64
(4.8.5+git192-g085f851+dfsg-2ubuntu4, 4.8.5+git192-g085f851+dfsg-2ubuntu4.1),
libqt4-opengl:i386 (4.8.5+git192-g085f851+dfsg-2ubuntu4,
4.8.5+git192-g085f851+dfsg-2ubuntu4.1), qtbase5-dev-tools:amd64
(5.2.1+dfsg-1ubuntu14.2, 5.2.1+dfsg-1ubuntu14.3), libqt4-script:amd64
(4.8.5+git192-g085f851+dfsg-2ubuntu4, 4.8.5+git192-g085f851+dfsg-2ubuntu4.1),
libqt4-script:i386 (4.8.5+git192-g085f851+dfsg-2ubuntu4,
4.8.5+git192-g085f851+dfsg-2ubuntu4.1), libqt5sql5:amd64
(5.2.1+dfsg-1ubuntu14.2, 5.2.1+dfsg-1ubuntu14.3), libqt5core5a:amd64
(5.2.1+dfsg-1ubuntu14.2, 5.2.1+dfsg-1ubuntu14.3), libqt4-opengl-dev:amd64
(4.8.5+git192-g085f851+dfsg-2ubuntu4, 4.8.5+git192-g085f851+dfsg-2ubuntu4.1),
libqt4-dev-bin:amd64 (4.8.5+git192-g085f851+dfsg-2ubuntu4,
4.8.5+git192-g085f851+dfsg-2ubuntu4.1), qt4-linguist-tools:amd64 (4.8.5+
git192-g085f851+dfsg-2ubuntu4, 4.8.5+git192-g085f851+dfsg-2ubuntu4.1),
libqt5xml5:amd64 (5.2.1+dfsg-1ubuntu14.2, 5.2.1+dfsg-1ubuntu14.3),
libqt5test5:amd64 (5.2.1+dfsg-1ubuntu14.2, 5.2.1+dfsg-1ubuntu14.3),
libqt4-designer:amd64 (4.8.5+git192-g085f851+dfsg-2ubuntu4,
4.8.5+git192-g085f851+dfsg-2ubuntu4.1), libqt5printsupport5:amd64
(5.2.1+dfsg-1ubuntu14.2, 5.2.1+dfsg-1ubuntu14.3), qtcore4-l10n:amd64
(4.8.5+git192-g085f851+dfsg-2ubuntu4, 4.8.5+git192-g085f851+dfsg-2ubuntu4.1),
libqtdbus4:amd64 (4.8.5+git192-g085f851+dfsg-2ubuntu4,
4.8.5+git192-g085f851+dfsg-2ubuntu4.1), libqtdbus4:i386
(4.8.5+git192-g085f851+dfsg-2ubuntu4, 4.8.5+git192-g085f851+dfsg-2ubuntu4.1),
libqt5opengl5-dev:amd64 (5.2.1+dfsg-1ubuntu14.2, 5.2.1+dfsg-1ubuntu14.3),
libqt4-test:amd64 (4.8.5+git192-g085f851+dfsg-2ubuntu4,
4.8.5+git192-g085f851+dfsg-2ubuntu4.1), libqt5widgets5:amd64
(5.2.1+dfsg-1ubuntu14.2, 5.2.1+dfsg-1ubuntu14.3), libqt4-scripttools:amd64
(4.8.5+git192-g085f851+dfsg-2ubuntu4, 4.8.5+git192-g085f851+dfs
g-2ubuntu4.1), libqt4-dbg:amd64 (4.8.5+git192-g085f851+dfsg-2ubuntu4,
4.8.5+git192-g085f851+dfsg-2ubuntu4.1), libqt5dbus5:amd64
(5.2.1+dfsg-1ubuntu14.2, 5.2.1+dfsg-1ubuntu14.3), libqt4-dev:amd64
(4.8.5+git192-g085f851+dfsg-2ubuntu4, 4.8.5+git192-g085f851+dfsg-2ubuntu4.1),
libqt5gui5:amd64 (5.2.1+dfsg-1ubuntu14.2, 5.2.1+dfsg-1ubuntu14.3),
libqt5network5:amd64 (5.2.1+dfsg-1ubuntu14.2, 5.2.1+dfsg-1ubuntu14.3),
qt4-qmake:amd64 (4.8.5+git192-g085f851+dfsg-2ubuntu4,
4.8.5+git192-g085f851+dfsg-2ubuntu4.1), libqtgui4:amd64
(4.8.5+git192-g085f851+dfsg-2ubuntu4, 4.8.5+git192-g085f851+dfsg-2ubuntu4.1),
libqtgui4:i386 (4.8.5+git192-g085f851+dfsg-2ubuntu4,
4.8.5+git192-g085f851+dfsg-2ubuntu4.1), libqt4-declarative:amd64
(4.8.5+git192-g085f851+dfsg-2ubuntu4, 4.8.5+git192-g085f851+dfsg-2ubuntu4.1),
libqt4-declarative:i386 (4.8.5+git192-g085f851+dfsg-2ubuntu4,
4.8.5+git192-g085f851+dfsg-2ubuntu4.1), qtbase5-dev:amd64
(5.2.1+dfsg-1ubuntu14.2, 5.2.1+dfsg-1ubuntu14.3), libqt4-help:amd64
(4.8.5+git192-
g085f851+dfsg-2ubuntu4, 4.8.5+git192-g085f851+dfsg-2ubuntu4.1)
End-Date: 2015-06-04 08:06:37
Start-Date: 2015-06-06 12:42:11
Commandline: apt-get install vim
Install: vim:amd64 (7.4.052-1ubuntu3), vim-runtime:amd64 (7.4.052-1ubuntu3,
automatic)
End-Date: 2015-06-06 12:42:34
Start-Date: 2015-06-07 16:01:21
Commandline: apt-get install dconf-editor
Install: dconf-editor:amd64 (0.20.0-1)
End-Date: 2015-06-07 16:01:41
Start-Date: 2015-06-07 16:12:07
Commandline: apt-get install gnome-settings-daemon
Install: gnome-settings-daemon:amd64 (3.8.6.1-0ubuntu11.2), nautilus-data:amd64
(3.10.1-0ubuntu9.8, automatic), libwacom-common:amd64 (0.8-1, automatic),
libwacom2:amd64 (0.8-1, automatic), gnome-settings-daemon-schemas:amd64
(3.8.6.1-0ubuntu11.2, automatic)
End-Date: 2015-06-07 16:13:26
** Affects: gpointing-device-settings (Ubuntu)
Importance: Undecided
Status: New
** Tags: input mouse
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https://bugs.launchpad.net/bugs/1462928
Title:
Middle button emulation causes delay in click status recognition
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