Public bug reported:
The track stick on my Dell E7440 has become almost unusable as a general
pointing device on Ubuntu 17.04, due to the slow speed and acceleration.
It literally takes 2+ seconds to move the pointer from left to right end
of a 1920-width screen with full force, and it is worse in the vertical
direction, since it is physically more difficult to apply the same
force.
I am using the max acceleration speed the libinput driver has to offer
of "1.0":
Section "InputClass"
Identifier "DualPoint Stick"
MatchIsPointer "true"
MatchProduct "DualPoint Stick"
MatchDevicePath "/dev/input/event*"
# When using libinput:
Option "AccelSpeed" "1"
[...]
I even modified the udev hardware database, after some research, to attempt to
adjust low level device characteristics:
/etc/udev/hwdb.d/70-dell-pointing-stick.hwdb:
# Latitude E7440
evdev:name:*DualPoint Stick:dmi:bvn*:bvr*:bd*:svnDellInc.:pnLatitudeE7440*:pvr*
POINTINGSTICK_CONST_ACCEL=10.0
POINTINGSTICK_SENSITIVITY=300
This rule successfully matches the pointing stick input device,
confirmed by "udevadm info ...", but the settings still appear to have
no effect on the actual behaviour in Xorg. The Xorg log even picks up
the (very high) constant acceleration factor:
[ 5.146] (II) input device 'AlpsPS/2 ALPS DualPoint Stick',
/dev/input/event6 is tagged by udev as: Mouse Pointingstick
[ 5.146] (II) Device 'AlpsPS/2 ALPS DualPoint Stick' set to const accel
10.00
[ 5.146] (II) input device 'AlpsPS/2 ALPS DualPoint Stick',
/dev/input/event6 is a pointer caps
[ 5.176] (**) Option "AccelSpeed" "1"
[ 5.176] (**) Option "ScrollMethod" "none"
[ 5.176] (**) Option "config_info"
"udev:/sys/devices/platform/i8042/serio1/input/input8/event6"
[ 5.176] (II) XINPUT: Adding extended input device "AlpsPS/2 ALPS DualPoint
Stick" (type: MOUSE, id 13)
[...]
I tried uninstalling xserver-xorg-input-libinput and instead installed
xserver-xorg-input-evdev. This brings back old behaviour of previous
Ubuntu releases, with accompanying xorg.conf options, and at least
allows to speed it up using the various acceleration options supported
by generic Xorg input frameworks and the evdev driver. But it is not a
nice solution.
Also I should mention, the mouse sensitivity settings in the Ubuntu
control panel, which was the first place I went to attemt to fix things,
have absolutely zero effect on the track stick.
ProblemType: Bug
DistroRelease: Ubuntu 17.04
Package: xserver-xorg-input-libinput 0.25.0-0ubuntu1
ProcVersionSignature: Ubuntu 4.10.0-20.22-generic 4.10.8
Uname: Linux 4.10.0-20-generic x86_64
ApportVersion: 2.20.4-0ubuntu4
Architecture: amd64
CurrentDesktop: Unity:Unity7
Date: Sun Apr 30 12:24:19 2017
DistUpgraded: Fresh install
DistroCodename: zesty
DistroVariant: ubuntu
InstallationDate: Installed on 2017-04-29 (0 days ago)
InstallationMedia: Ubuntu 17.04 "Zesty Zapus" - Release amd64 (20170412)
MachineType: Dell Inc. Latitude E7440
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.10.0-20-generic.efi.signed
root=UUID=a4a0ad72-6313-4827-9391-c4108ed0e6c9 ro quiet splash vt.handoff=7
SourcePackage: xserver-xorg-input-libinput
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/22/2016
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A20
dmi.board.name: 07F3F4
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias:
dmi:bvnDellInc.:bvrA20:bd12/22/2016:svnDellInc.:pnLatitudeE7440:pvr00:rvnDellInc.:rn07F3F4:rvrA00:cvnDellInc.:ct9:cvr:
dmi.product.name: Latitude E7440
dmi.product.version: 00
dmi.sys.vendor: Dell Inc.
version.compiz: compiz 1:0.9.13.1+17.04.20170109-0ubuntu1
version.ia32-libs: ia32-libs N/A
version.libdrm2: libdrm2 2.4.76-1
version.libgl1-mesa-dri: libgl1-mesa-dri 17.0.3-1ubuntu1
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 17.0.3-1ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.19.3-1ubuntu1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.9.0-0ubuntu1
version.xserver-xorg-video-intel: xserver-xorg-video-intel
2:2.99.917+git20170309-0ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.14-0ubuntu1
** Affects: xserver-xorg-input-libinput (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug ubuntu zesty
--
You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to xserver-xorg-input-libinput in Ubuntu.
https://bugs.launchpad.net/bugs/1687275
Title:
Dell track stick pointer is too slow [libinput]
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-input-libinput/+bug/1687275/+subscriptions
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