Ubuntu GUI won't start on first try. What to do?

Question

linux

I updated all the packages yesterday and installed new ones, the graphical shell turned off. Didn't start after reboot. The search for broken packages turned up nothing. The file system is alive. Disk trimmed. The system boots, the splash screen goes on, then just a black screen. I don't see any errors in the log. I went to the console, there are messages like mysql start, apache started ... I typed bash by typing, a password and login request appeared. I tried updating the packages again, but cups gave me an error. I stopped cups and updated everything again. Then I restarted the graphics. Everything started. A window appeared with the inscription error, but there were no details in it. Just a send to canonical button. What could it be? What to do? Where else to watch? In what other logs can there be an error?

Answer 1

get used to it this way with every little update
1. alt+ctrl+F1-7 last depending on the choice of a free terminal
2. sudo etc/init.d/lightdm stop
3 launches the video card driver installer
Then everything will be a bunch.
4. it would not be sour to show the syslog kern.log logs

Answer 2

The first question is, why install Linux if you can't properly understand the console,
you can log in and use the system from the console and manage it from there.
Perhaps this is a crash of the graphical shell when it starts, you can try to roll it back if everything worked fine before.
What version of Ubuntu do you have?

Answer 3

Ubuntu's most notorious graphics problems are graphics card drivers. Especially ATI/AMD.
Google experiments with xorg.conf, gradually get comfortable.

Answer 4

Everything is fine, there are glitches. Do not listen to anyone, learn, everything will turn out.
In the case - integrated graphics? What's in /var/log/Xorg.0.log