Synaptics s3203 touchpad on Dell Inspiron 15 5547 has no working after recent upgrade to kernel 4.15.0-72

[Fabrício Pereira]

I upgraded my Ubuntu 18.04 with the `apt upgrade` command, and the kernel upgrade to 4.15.0-72.
After a reboot, the touchpad stopped working. And the external USB mouse kept working fine.

Looking for this issue, I found these reports about similar problems (https://sangams.com.np/fix-ubuntu-18-4-touchpad-not-working-properly/ and https://askubuntu.com/questions/1041820/touchpad-not-working-on-ubuntu-18-04), and I checked the package `xserver-xorg-input-synaptics` wasn't installed.

Then I tried to install with the command: `apt install xserver-xorg-input-synaptics`.
I rebooted the computer, but the problem continues.

After I ran a diagnostic test with BIOS from Dell Notebook, and on interacting with the diagnostic system, I was able to use the touchpad without problems.

Then I suppose this problem is from SO kernel upgraded.

=========================
Follow some info's system:

$uname -a
Linux myinspiron155547 4.15.0-72-generic #81-Ubuntu SMP Tue Nov 26 12:20:02 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux

$ xinput
⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ Synaptics s3203 id=11 [slave pointer (2)]
⎣ Virtual core keyboard id=3 [master keyboard (2)]
    ↳ Virtual core XTEST keyboard id=5 [slave keyboard (3)]
    ↳ Power Button id=6 [slave keyboard (3)]
    ↳ Video Bus id=7 [slave keyboard (3)]
    ↳ Power Button id=8 [slave keyboard (3)]
    ↳ Sleep Button id=9 [slave keyboard (3)]
    ↳ Integrated_Webcam_HD: Integrate id=10 [slave keyboard (3)]
    ↳ Dell WMI hotkeys id=12 [slave keyboard (3)]
    ↳ AT Translated Set 2 keyboard id=13 [slave keyboard (3)]

[A. Richard Miller (themillers)]

This one-line fix (which was in your askubuntu... link) has worked well
for us on various notebook touchpads from Ubuntu 18.04 through

|
> 19.10:Installing below package will resolve the touchpad issues on
> |Ubuntu 18.04|.
> |sudo apt install xserver-xorg-input-synaptics ||

Cheers from
--Dick Miller, Partner, MMS <<email address hidden>
<mailto:<email address hidden>>>
 Co-Leader, FOSS User Group at Natick Community-Senior Center
<http://millermicro.com/FOSSUserGroupNatick.html>

On 12/4/19 2:43 PM, Fabrício Pereira wrote:
> Public bug reported:
>
> I upgraded my Ubuntu 18.04 with the `apt upgrade` command, and the kernel upgrade to 4.15.0-72.
> After a reboot, the touchpad stopped working. And the external USB mouse kept working fine.
>
> Looking for this issue, I found these reports about similar problems
> (https://sangams.com.np/fix-ubuntu-18-4-touchpad-not-working-properly/
> and https://askubuntu.com/questions/1041820/touchpad-not-working-on-
> ubuntu-18-04), and I checked the package `xserver-xorg-input-synaptics`
> wasn't installed.
>
> Then I tried to install with the command: `apt install xserver-xorg-input-synaptics`.
> I rebooted the computer, but the problem continues.
>
> After I ran a diagnostic test with BIOS from Dell Notebook, and on
> interacting with the diagnostic system, I was able to use the touchpad
> without problems.
>
> Then I suppose this problem is from SO kernel upgraded.
>
> =========================
> Follow some info's system:
>
> $uname -a
> Linux myinspiron155547 4.15.0-72-generic #81-Ubuntu SMP Tue Nov 26 12:20:02 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
>
> $ xinput
> ⎡ Virtual core pointer id=2 [master pointer (3)]
> ⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
> ⎜ ↳ Synaptics s3203 id=11 [slave pointer (2)]
> ⎣ Virtual core keyboard id=3 [master keyboard (2)]
>     ↳ Virtual core XTEST keyboard id=5 [slave keyboard (3)]
>     ↳ Power Button id=6 [slave keyboard (3)]
>     ↳ Video Bus id=7 [slave keyboard (3)]
>     ↳ Power Button id=8 [slave keyboard (3)]
>     ↳ Sleep Button id=9 [slave keyboard (3)]
>     ↳ Integrated_Webcam_HD: Integrate id=10 [slave keyboard (3)]
>     ↳ Dell WMI hotkeys id=12 [slave keyboard (3)]
>     ↳ AT Translated Set 2 keyboard id=13 [slave keyboard (3)]
>
> ** Affects: xserver-xorg-input-synaptics (Ubuntu)
> Importance: Undecided
> Status: New
>
>
> ** Tags: synaptics touchpad
>
> ** Description changed:
>
> I upgraded my Ubuntu 18.04 with the `apt upgrade` command, and the kernel upgrade to 4.15.0-72.
> - After a reboot, the touchpad stopped working. And the external USB mouse works fine.
> + After a reboot, the touchpad stopped working. And the external USB mouse kept working fine.
>
> Looking for this issue, I found these reports about similar problems
> (https://sangams.com.np/fix-ubuntu-18-4-touchpad-not-working-properly/
> and https://askubu...

[Fabrício Pereira (fabriciorsf)]

But it on-line fix didn't work for me, as I reported.

[Fabrício Pereira (fabriciorsf)]

This other link seems to report the same problem:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1854798