[SOLVED] TOUCHSCREEN 5' problem and RPi reboot error

[Backup]

Hello,
It's been 2 days that I'm getting mad about some problems the RPi screen is giving to me.
I am a beginner, so some terms can be wrong, but more than anything I would like to provide a guide to those who don't unerstand so much about this.
I report everything I did to make it work, in order to make your life easier.

WHICH PROBLEMS I ENCOUNTED:
1) image resolution was less than the screen itself
2) at reboot, desktop won't start, but it entered in safe-mode (asking to press "Enter" to start)
3) Touchscreen didn't work on 0.5mm on each side
4) the pen doesn't matched with the pointer on the screen

SOLUTIONS:
1) To solve this problem, many guides suggest to add some lines to "config.txt". I have actually solved the problem using the drivers from another brand (I ended up thinking that all those products are made by the same company and are all the same).

This is what you have to do:
- Once installed Raspbian, SSH into it ad write, line by line:

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sudo rm -rf LCD-show
git clone https://github.com/goodtft/LCD-show.git
chmod -R 755 LCD-show
cd LCD-show/

This will delete any previous folder of such drivers, download the newest one, gives the access to the folder and enter in that one.

- Now, since we have a 5' screen, run:

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sudo ./LCD5-show

This way, it will install 5' drivers.

Now run:

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sudo reboot

Once done, you should be able to see that the screen will be used 100%.

2) I have also noted that those drivers make the reboot very instable, so that the OS won't start again but you have to press "Enter" every time. This is annoying, also because you need a keyboard. (This iss the error: "Cannot open access to console. The root account is locked see sulogin(8) man page for more details.")
To solve the problem, edit "cmdline.txt".

First of all, see which partition is used for the startup:

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cat /etc/fstab

what you need to find is PARTUUID (usually (mine) the one which starts with "-02").

Now run:

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sudo nano /boot/cmdline.txt

to edit the file.

Change this:
root=/dev/mmxxxxxxxx2 ----> root=PARTUUID=3exxxxxxxxx-02
And add this one:
fsck.repair=yes
On the same line.

Now:

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sudo reboot

and the Desktop should boot automatically.

3 e 4) This is the most annoying thing because you can't click on the home bar.
We have to download a program to calibrate the touchscreen and insert the data in a proper file, so that such a configuration will be permanent, otherwise at every boot it will reset.

So, SSH into the Rpi and run

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sudo apt-get install -y xinput-calibrator

to download the software.

You should find it into Menu/Prefernces/TouchScreen Calibration (clicking on RPi icon)
Now you have to click on 4 crosses with the pen .
Done,it will present to you a window with numbers: copy this part

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Section "InputClass"
Identifier "calibration"
MatchProduct "eGalax Inc. USB TouchController"
Option "Calibration" "1960 248 151 1783"
EndSection

Go to,

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sudo nano /ect/X11/xorg.conf.d/99-calibration.conf

and paste the lines into this last file (sostituendo se già presenti) queste righe lì dentro.

Save everything:

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Ctrl-X
Yes
Enter

and then:

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sudo reboot

Now everything should work
I hope to have helped you and remember that i'm new so if I mistake somehting, please tell me and I modify the guide.