touchpad no driver

[drpirata]

model notebook: PackardBell easynote ENTG71BM intel n2840
touchpad no
keyboard ok
mouse usb external ok

[thx-1138]

model notebook: PackardBell easynote ENTG71BM intel n2840
touchpad no
keyboard ok
mouse usb external ok

...according to this, there should theoritically exist a setting in your BIOS,
to set the touchpad to 'Basic' instead of 'Advanced'. I'd give that a try.

Else, you could also try this.
xed admin:///etc/default/grub
Change the line there as follows:

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash i8042.nopnp i8042.nomux=1 i8042.reset=1"

Save, then run sudo update-grub, and reboot.

Hopefully one out of those 2 above will do the trick for you.

[drpirata]

My BIOS does not have that option but the second solution has worked perfectly!
Thank you!

Now on the keyboard, is there any way to use special keys to lower screen brightness?

[thx-1138]

Nice. Controlling the backlight if it's not automatically working out-of-the-box is frequently more involved...
Following the very exact same steps / procedure as per above, try further also adding the following parameters, ie. like this:

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash i8042.nopnp i8042.nomux=1 i8042.reset=1 acpi_osi=Linux acpi_backlight=vendor"

If such doesn't do the trick, other parameters that you could try out, and hopefully one of them works (with the usual Fn keys...):
acpi_backlight=native
acpi_backlight=none
acpi_backlight=video

[drpirata]

None of the options works this time
And there's no way to lower the brightness, it does not respond from the energy / brightness menu, but it goes down to 30% due to inactivity ...

[thx-1138]

None? Ouch. You could also try the more generic acpi_osi=, without any further acpi_backlight parameters...
Do post the output from ls -l /sys/class/backlight/ in case someone comes with better ideas...

[drpirata]

Now it improves, I have access to some buttons: the mute, vol +, vol-, touchpad on / off... but not the brightness

ls -l /sys/class/backlight/
total 0
lrwxrwxrwx 1 root root 0 dic 15 21:18 acpi_video0 -> ../../devices/pci0000:00/0000:00:02.0/backlight/acpi_video0
lrwxrwxrwx 1 root root 0 dic 15 21:18 intel_backlight -> ../../devices/pci0000:00/0000:00:02.0/drm/card0/card0-eDP-1/intel_backlight

[thx-1138]

So there exist 2 interfaces there, acpi_video0 & intel_backlight, and one of them has to be in charge somehow.
I'll use my current laptop as an example (which only has intel_backlight though).
grep . /sys/class/backlight/*/*

/sys/class/backlight/intel_backlight/actual_brightness:158
/sys/class/backlight/intel_backlight/bl_power:0
/sys/class/backlight/intel_backlight/brightness:158
grep: /sys/class/backlight/intel_backlight/device: Is a directory
/sys/class/backlight/intel_backlight/max_brightness:208
grep: /sys/class/backlight/intel_backlight/power: Is a directory
grep: /sys/class/backlight/intel_backlight/subsystem: Is a directory
/sys/class/backlight/intel_backlight/type:raw

The values of interest are brightness & max_brightness.
To increase such (from current 158 to maximum 208 - the values may differ in your system):
echo 208 | sudo tee /sys/class/backlight/intel_backlight/brightness
Or else, assuming that acpi_video0 existed here:
echo 208 | sudo tee /sys/class/backlight/acpi_video0/brightness

But I don't know how such could be successfully binded to the Fn keys i'm afraid...