@LeandroStanger That is an interesting observation, and I had not considered it. While the log does show that @Ana-Maria_Ivan is on 3.1.6, and while the computer has a Realtek Ethernet driver, the WiFi driver is not from Realtek, so I'm not sure if it would have been impacted. And, at least on the computer I tested, the symptom was that the WiFi card was not even shown as available. Still, it might be worth upgrading to 3.1.7 (Settings > Details > Check for updates now) even if just to rule that out, especially if the problem started just this week.
It is interesting that the App Center is so slow, too. When the App Center is first opened, it does try to reach the server, so all signs so far are pointing to a networking issue.
I see that you started with a 2.x version of Endless and updated to 3.x. So I presume everything was working fine and just recently started to be problematic. And, assuming there are no obvious problems with slowness to boot the computer, we can probably rule out processor / disk drive issues.
I'm thinking it is one of three issues:
- The WiFi bug with 3.1.6
- Some other bug with WiFi for your model that we missed on the new kernel
- Some hardware problem like a disconnected antenna cable on the WiFi card
Please try to upgrade to 3.1.7, and let me know if that helps. If not, I'll see if we have access to an ASUS X540S that we can test to try to determine if there is a software bug.
Also, if you have the ability to connect an Ethernet wire, it would be helpful to know if the problem is only while using WiFi.