Wifi is really flaky. Sometimes it disconnects. Sometimes it is fast for a few minutes, then it slows down again more and more till it says "no internet connection", then going fast after sometime.
Example of going flaky: When I try to load an HD image from google image search, that image will take ages to load and while it is being loaded, spotify and telegram will disconnect and other web browsing will be impossible, saying that there is no internet, when i am actually still connected to the wireless. Same for apt upgrade. Other devices like my Smartphone and my old x201 (16.04) don't have problems with the wifi.
*-network description: Ethernet interface product: Ethernet Connection I218-LM vendor: Intel Corporation physical id: 19 bus info: pci@0000:00:19.0 logical name: enp0s25 version: 04 serial: 54:ee:75:0f:0b:89 capacity: 1Gbit/s width: 32 bits clock: 33MHz capabilities: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=3.2.6-k firmware=0.6-4 latency=0 link=no multicast=yes port=twisted pair resources: irq:47 memory:f0500000-f051ffff memory:f053e000-f053efff ioport:3080(size=32) *-network description: Wireless interface product: Wireless 7260 vendor: Intel Corporation physical id: 0 bus info: pci@0000:03:00.0 logical name: wlp3s0 version: 83 serial: e8:2a:ea:08:51:83 width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=iwlwifi driverversion=4.10.0-32-generic firmware=17.459231.0 ip=192.168.1.109 latency=0 link=yes multicast=yes wireless=IEEE 802.11 resources: irq:46 memory:f0400000-f0401fff
What I have tried so far is this (obviously I adjusted the logical name), with no result. I am not an Ubuntu Expert, just a regular User. I hope someone has a suggestion on what else I can try! ubuntu was installed yesterday and update/upgrade have been done. Have a nice day.
edit2: Added some more accurate description of the wifi problem.
edit3: tried the live CD for ubuntu 17.04. Seemed fine, so I installed it. After installation, surfing with Firefox seemed good. I did apt update/upgrade and from there on it is flakey again like described above... Could it be some problem with ipv4/ipv6?
edit4: apparently it is a problem with my wifi. tried two different wifis and everything was fine. tried to restart my wifi but that didn't help.
edit5: Problem is solved for the moment. It was apparently caused by a WiFi repeater. Restarting the repeater helped a bit but turning it off made the problems go away. (No Problems for over a week now after turning off the repeater). So far so good. Question is still: How to deal with this issue when it is not an option to turn off the repeater? Maybe on a Public WiFi or a different place where there is a Repeater set up.