I experienced this same issue today after upgrading to Ubuntu 21.04 also
on a Dell 7140 with the same trackpad.
I followed the above advice:
1. install xserver-xorg-input-synaptics package -> sudo apt install
xserver-xorg-input-synaptics -y
2. Masking the service fwupd using systemctl mask
I forget to mention I tried without and with installed
xserver-xorg-input-synaptics package.
The actual kernel is 5.4.0-52-generic what I got during first software update.
In the mean time I tried with the original kernel what the Ubuntu
20.04.1 installed (5.4.0-42-generic) an the left and right
I'm having the same issue on my Dell Venue 11 Pro 7140 with Intel® Core™ M-5Y71
CPU.
First time I tried Ubuntu 20.04 and the touchpad issue was the some.
I tried more OS is like Debian buster, Fedora 32 with no luck.
Then I re-installed Ubuntu but I used the latest 20.04.1 and to my surprise
I am having the very same problem, did a solution arise?
venue 11 with keyboard/battery dock, just installed ubuntu 20LTS (previously
16LTS), everything worked fine until I started the software installer, from
then on no touchpad, then restarting the system the touchpad works at login
for 2-3
[Expired for libinput (Ubuntu) because there has been no activity for 60
days.]
** Changed in: libinput (Ubuntu)
Status: Incomplete => Expired
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[Expired for linux (Ubuntu) because there has been no activity for 60
days.]
** Changed in: linux (Ubuntu)
Status: Incomplete => Expired
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It doesn't look like a power management issue, somehow the trackpad just
stop responding during a short usage.
Can you please boot with kernel parameter "dyndbg='file drivers/usb/*
+p' log_buf_len=16M" and attach dmesg?
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Any other suggestions for what I should try?
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Title:
[Dell Venue 11 Pro 7140] Trackpad does not work
To manage notifications about this bug go
** Tags added: hwe-touchpad
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Title:
[Dell Venue 11 Pro 7140] Trackpad does not work
To manage notifications about this bug go to:
Gave it a go - similar results to what happens when I first power it up
and log in - the trackpad controls the pointer for a few seconds then
stops once the desktop (I assume) is done loading.
Is there any kind of command to find out what devices X and/or gnome is
responding to? It almost feels
Hmm, what happens if automatic login is enabled?
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Title:
[Dell Venue 11 Pro 7140] Trackpad does not work
To manage notifications about this bug
No change. Still stops working after a few seconds once the full
desktop is active. Also I notice once it stops working at that point,
if I log out the trackpad continues to not work at the logon screen.
Rebooting the system brings back trackpad functionality until I log back
in.
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You
Can you please test kernel parameter "usbcore.autosuspend=-1" and see if
it helps?
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Title:
[Dell Venue 11 Pro 7140] Trackpad does not work
To
I assume you mean output from hid-recorder - I'll attach the 4 files one
at a time:
This one contains hidraw0 which is the touchpad input - data in it
includes me moving my finger on the touch pad.
** Attachment added: "hidraw0"
This last one is hidraw3 - I have NO CLUE what this one is.
** Attachment added: "hidraw3"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1877655/+attachment/5370367/+files/hidraw3
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This one is hidraw1, it is the keyboard (see sample keypresses in the
output)
** Attachment added: "hidraw1"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1877655/+attachment/5370365/+files/hidraw1
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This is hidraw2 which is the touch screen, I let it record me touching
and moving my finger on the screen.
** Attachment added: "hidraw2"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1877655/+attachment/5370366/+files/hidraw2
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Can you please attach reports for all hidraw*?
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Title:
[Dell Venue 11 Pro 7140] Trackpad does not work
To manage notifications about this bug
vanvugt: Well, I ran into a little issue. I went ahead and did a
reinstall of ubuntu (at the point when I submitted my original bug, I
was running PopOS). Before ANY updates, the trackpad works as it should
until I launch software center (or even dmesg -w). The instant I run
one of those, the
Please use hid-tools' hid-recorder on the Touchpad's hidraw node to
collect log.
[1] https://gitlab.freedesktop.org/libevdev/hid-tools
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Title:
Since you said the trackpad works in Wayland until you run Software
Center, please:
1. Log into 'Ubuntu on Wayland'.
2. Make sure the trackpad works.
3. Open a Terminal and run: dmesg -w
Leave it running but tap Enter several times to make some blank lines.
4. Open Software Centre.
5.
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