Ubuntu
xorg-hwe-18.04 package

Dell Latitude 7400 Touchpad unresponsive in power saving mode

Bug #1845893 reported by Klaus Schneider
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
xorg-hwe-18.04 (Ubuntu)
Won't Fix
Undecided
Unassigned
xserver-xorg-input-libinput-hwe-18.04 (Ubuntu)
Won't Fix
Undecided
Unassigned
xserver-xorg-input-synaptics-hwe-18.04 (Ubuntu)
Won't Fix
Undecided
Unassigned

Bug Description

From /proc/bus/input/devices:

I: Bus=0018 Vendor=06cb Product=cd97 Version=0100
N: Name="DELL08E1:00 06CB:CD97 Touchpad"
P: Phys=i2c-DELL08E1:00
S: Sysfs=/devices/pci0000:00/0000:00:15.1/i2c_designware.1/i2c-9/i2c-DELL08E1:00/0018:06CB:CD97.0002/input/input30
U: Uniq=
H: Handlers=mouse0 event4
B: PROP=1
B: EV=1b
B: KEY=e520 30000 0 0 0 0
B: ABS=2e0800000000003
B: MSC=20

The touchpad becomes unresponsive when it enters power saving mode (/sys/devices/pci0000\:00/0000\:00\:15.1/power/control = auto). The problem is fixed when disabling the power saving mode.

The problem happens both with Synaptics and Libinput as driver.

Revision history for this message
Timo Aaltonen (tjaalton) wrote (last edit ):

18.04 is EOL

Changed in xorg-hwe-18.04 (Ubuntu):
status: New → Won't Fix
Changed in xserver-xorg-input-libinput-hwe-18.04 (Ubuntu):
status: New → Won't Fix
Changed in xserver-xorg-input-synaptics-hwe-18.04 (Ubuntu):
status: New → Won't Fix
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