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The minimum for today use:

Laptop, with detachable tactile screen and WiFi 802.11 AC (not b/g/n only) and USB 3 and SIM and keyboard with backlight for typing in the dark.

[SIM support is...

In older version 16.04, Cheese, show video from STK1160 without install additional package. But 18.04 installation PEN no more working!

Anyone know what is missing.

lsusb shows the device.
...

No return.

If changed sbin return:

ExecStart=/usr/sbin/gdm3

Ubuntu 18.04 fail to show login screen on laptop with broken built-in display!

If laptop is working with VGA/DVI/HDMI screen, and have the built-in display broken, the login is not working.

A...

In my experience it cuts because of speed of usb devices connected... If I connect an usb3 disk to the usb3 port, the internal wi-fi disconnects immediately... If I connect the same usb3 disk to an...

This makes the voulme slide goes up and down, but sound can still be missing.

Try:

cat /proc/asound/cards

Then the result will be something like:

0 [Intel ]: HDA-Intel - HDA...

It can be several things:

1. disk hardware failure, like I/O errors, can cause net to go off because it fails to store data from browser.

2. firewall blocking traffic, should have a rule to...

It can be several things:

1. disk hardware failure, like I/O errors, can cause net to go off because it fails to store data from browser.

2. firewall blocking traffic, should have a rule to...

If you still get internet off and on, this is most probably caused by the computer storage support (for example: hard disk) having hardware failure in IO (input/output) operations.

To test if this...

I have the internal webcam has /dev/video0 and Easycap has /dev/video1, and no wake up is necessary, I just installed VLC (a video application) from "Ubuntu Software Center", and then start "VLC" and...

The only solution to make microphone work is to install linux-backports-modules-alsa-generic...

Just go to:

Menu / System / Administration / Synaptic Package Manager

And search and...

The solution for some URL return timeout error is in firewall settings.

Just disable the following, in firewal preferences (menu Edit/Preferences/Advanced Options):

block broadcasts from...

The solution for some URL return timeout error is in firewall settings.

Just disable the following, in firewal preferences (menu edit/preferences/Advanced Options):

block broadcasts from...

Well according to what you say, the only missing is the options file and wvdial file...

Try this for those files:

/etc/ppp/options
# empty file

/etc/ppp/peers/wvdial
noauth
name wvdial