16 hours ago
This problem happened in my friend's computer, and I'm trying to help him out. He was using Jupyter for coding python, and installed SageMath using sudo apt-get install sagemath. He said that after that, the Jupyter kernel stopped working, so he decided to reboot his computer. The problem is, once he did this, he got a black screen, as shown below:
Jupyter
sudo apt-get install sagemath
He said he can actually navigate the Ubuntu system, but there is no GUI. Here is another photo:
3 hours ago
The disk is full. 10% of a disk drive's space is reserved for root, which means that when a typical user program (like GNOME desktop) starts up and tries to create a log file, it can't. Use the du -hxd1 -t 10M command repeatedly to track down what is eating up this space, and delete it.
du -hxd1 -t 10M