The IBM / Lenovo trackpoints are special, they allow specifying a sensitivity
setting through a ps/2 command, which changes the range of the deltas send when
using the trackpoint. One some models with normal usage one only deltas
of 1 or 2 are send, resulting in there only being 2 mouse cursor movement
speeds, rather then the expected fluid scale.
Changing the sensitivity to a higher level then the bootup default fixes this,
the rule additions in this commit allows specifying a new sensitivity default
through hwdb giving a better ootb experience.
Signed-off-by: Hans de Goede <hdego...@redhat.com>
---
hwdb/70-trackpoint.hwdb | 11 +++++++++++
rules/70-trackpoint.rules | 6 ++++++
2 files changed, 17 insertions(+)
diff --git a/hwdb/70-trackpoint.hwdb b/hwdb/70-trackpoint.hwdb
index f2f8364..3dd5100 100644
--- a/hwdb/70-trackpoint.hwdb
+++ b/hwdb/70-trackpoint.hwdb
@@ -54,6 +54,17 @@
# by how much to multiply deltas generated by the trackpoint to get
# normalized deltas.
#
+#########################################
+# TRACKPOINT_SENSITIVTY #
+#########################################
+#
+# TPPS/2 IBM TrackPoint driver sensitivity sysfs setting
+# TRACKPOINT_SENSITIVITY=<sensitivity>
+#
+# Where <sensitivity> is a number between 0 and 255, note this property
+# only applies to TPPS/2 IBM TrackPoint devices and only works with DMI
+# matches.
+#
#
# Sort by by brand, model
diff --git a/rules/70-trackpoint.rules b/rules/70-trackpoint.rules
index 8ecbde6..1ed234d 100644
--- a/rules/70-trackpoint.rules
+++ b/rules/70-trackpoint.rules
@@ -8,6 +8,12 @@ ENV{ID_INPUT_TRACKPOINT}=="", GOTO="trackpoint_end"
IMPORT{builtin}="hwdb --subsystem=input --lookup-prefix=trackpoint:", \
GOTO="trackpoint_end"
+# Same as below but also sets the TPPS/2 IBM TrackPoint driver sensitivity
+KERNELS=="input*", ATTR{device/name}=="TPPS/2 IBM TrackPoint", \
+ IMPORT{builtin}="hwdb
'trackpoint:name:$attr{device/name}:$attr{[dmi/id]modalias}'", \
+ RUN="/bin/sh -c 'echo -n $env{TRACKPOINT_SENSITIVTY} >
/sys$env{DEVPATH}/../../../sensitivity'", \
+ GOTO="trackpoint_end"
+
# device matching the input device name and the machine's DMI data
KERNELS=="input*", \
IMPORT{builtin}="hwdb
'trackpoint:name:$attr{device/name}:$attr{[dmi/id]modalias}'", \
--
2.3.4
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