Comment 0 for bug 1922807

Hello,

I have a fresh installation of Ubuntu (Ubuntu 20.04.2 LTS, Release: 20.04) on one partition of my HP Probook. The other partition is Win10 Pro.
From the first moments on the touchpad didn't work. But then i could solve the issue and it worked fine for a while:
sudo apt remove xserver-xorg-input-synaptics

Then i installed VirtualBox and also installed some additional dependencies:

sudo apt-get install -y build-essential zlibc zlib1g-dev ruby ruby-dev openssl libxslt-dev libxml2-dev libssl-dev libreadline6 libreadline6-dev libyaml-dev libsqlite3-dev sqlite3

sudo apt-get install -y build-essential zlibc zlib1g-dev ruby ruby-dev openssl libxslt1-dev libxml2-dev libssl-dev libreadline7 libreadline-dev libyaml-dev libsqlite3-dev sqlite3

I also installed ruby 2.7.0p0 (2019-12-25 revision 647ee6f091) [x86_64-linux-gnu]
and GCC via:
sudo apt install build-essential

Now my touchpad doesn't work and i can't remove synaptics again, because its not even installed.
I also tried editing the grub file:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash i8042.nopnp"
and also tried:
GRUB_CMDLINE_LIN UX_DEFAULT="quiet splash psmouse.proto=bare"
GRUB_CMDLINE_LINUX="i8042.reset i8042.nomux i8042.nopnp i8042.noloop"

The devices-list proc/bus/input/devices is attached to this report but unfortunately, there is no touchpad listed.

And here is the xinput list:
xinput list
⎡ Virtual core pointer id=2 [master pointer (3)]
⎜ ↳ Virtual core XTEST pointer id=4 [slave pointer (2)]
⎜ ↳ Surface Mobile Mouse id=16 [slave pointer (2)]
⎜ ↳ MX Keys Consumer Control id=18 [slave pointer (2)]
⎜ ↳ MX Keys Mouse id=20 [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)]
    ↳ HP HD Camera: HP HD Camera id=10 [slave keyboard (3)]
    ↳ HP HD Camera: HP IR Camera id=11 [slave keyboard (3)]
    ↳ AT Translated Set 2 keyboard id=12 [slave keyboard (3)]
    ↳ HP Wireless hotkeys id=13 [slave keyboard (3)]
    ↳ HP WMI hotkeys id=14 [slave keyboard (3)]
    ↳ Surface Mobile Mouse Keyboard id=15 [slave keyboard (3)]
    ↳ MX Keys Keyboard id=17 [slave keyboard (3)]
    ↳ MX Keys Consumer Control id=19 [slave keyboard (3)]

I am thankful for any help.
Kind regards,
ente187