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im new to Ubuntu. Installed version 17.10 yesterday and everything worked fine. Today I have problems with the Wifi adapter. Right after starting the PC it either won't find any Networks, or connects to the default but after a few minutes it looses connection and won't reconnect or find it.

At this point the GUI says: Wireless Networks are not available.

Ethernet works well.

I found this skript to diagnose the Adapter but i don't know for what i should look for. https://github.com/UbuntuForums/wireless-info

I let the skript post the output to: http://paste.ubuntu.com/25916283/

I also found this Article I have a hardware detection problem, what logs do I need to look into? and looked the suggested things up.

sudo lshw -class network

sebastian@sebastian-NBLB2:~$ sudo lshw -class network
  *-network                 
       Beschreibung: Ethernet interface
       Produkt: AR8131 Gigabit Ethernet
       Hersteller: Qualcomm Atheros
       Physische ID: 0
       Bus-Informationen: pci@0000:04:00.0
       Logischer Name: enp4s0
       Version: c0
       Seriennummer: 70:5a:b6:e5:0a:78
       Größe: 100Mbit/s
       Kapazität: 1Gbit/s
       Breite: 64 bits
       Takt: 33MHz
       Fähigkeiten: pm msi pciexpress vpd bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
       Konfiguration: autonegotiation=on broadcast=yes driver=atl1c driverversion=1.0.1.1-NAPI duplex=full ip=192.168.0.105 latency=0 link=yes multicast=yes port=twisted pair speed=100Mbit/s
       Ressourcen: irq:29 memory:d5000000-d503ffff ioport:3000(Größe=128)
  *-network DEAKTIVIERT
       Beschreibung: Kabellose Verbindung
       Produkt: WiFi Link 5100
       Hersteller: Intel Corporation
       Physische ID: 0
       Bus-Informationen: pci@0000:05:00.0
       Logischer Name: wlp5s0
       Version: 00
       Seriennummer: 00:22:fa:a3:e8:0e
       Breite: 64 bits
       Takt: 33MHz
       Fähigkeiten: pm msi pciexpress cap_list ethernet physical wireless
       Konfiguration: broadcast=yes driver=iwlwifi driverversion=4.13.0-16-generic firmware=8.83.5.1 build 33692 latency=0 link=no multicast=yes wireless=IEEE 802.11
       Ressourcen: irq:26 memory:d4000000-d4001fff

lspci

04:00.0 Ethernet controller: Qualcomm Atheros AR8131 Gigabit Ethernet (rev c0)
05:00.0 Network controller: Intel Corporation WiFi Link 5100

dmesg

[  386.861267] ---[ end trace 3adf6e467ef0813a ]---
[  399.440556] IPv6: ADDRCONF(NETDEV_UP): wlp5s0: link is not ready
[  399.651807] iwlwifi 0000:05:00.0: Radio type=0x1-0x2-0x0
[  400.176106] iwlwifi 0000:05:00.0: Could not load the [0] uCode section
[  402.279606] iwlwifi 0000:05:00.0: Failed to run INIT ucode: -5
[  402.279622] iwlwifi 0000:05:00.0: Unable to initialize device.
[  402.287097] IPv6: ADDRCONF(NETDEV_UP): wlp5s0: link is not ready
[  402.452898] iwlwifi 0000:05:00.0: Radio type=0x1-0x2-0x0
[  402.975670] iwlwifi 0000:05:00.0: Could not load the [0] uCode section
[  405.084478] iwlwifi 0000:05:00.0: Failed to run INIT ucode: -5
[  405.084491] iwlwifi 0000:05:00.0: Unable to initialize device.
[  405.091499] IPv6: ADDRCONF(NETDEV_UP): wlp5s0: link is not ready
[  405.256725] iwlwifi 0000:05:00.0: Radio type=0x1-0x2-0x0
[  405.786548] iwlwifi 0000:05:00.0: Could not load the [0] uCode section
[  407.893306] iwlwifi 0000:05:00.0: Failed to run INIT ucode: -5
[  407.893324] iwlwifi 0000:05:00.0: Unable to initialize device.
[  407.898971] IPv6: ADDRCONF(NETDEV_UP): wlp5s0: link is not ready
[  450.520878] perf: interrupt took too long (4021 > 3952), lowering kernel.perf_event_max_sample_rate to 49500
[  562.320819] iwlwifi 0000:05:00.0: Radio type=0x1-0x2-0x0
[  562.849135] iwlwifi 0000:05:00.0: Could not load the [0] uCode section
[  564.978213] iwlwifi 0000:05:00.0: Failed to run INIT ucode: -5
[  564.978231] iwlwifi 0000:05:00.0: Unable to initialize device.
[  564.982438] IPv6: ADDRCONF(NETDEV_UP): wlp5s0: link is not ready
[  575.674280] iwlwifi 0000:05:00.0: Radio type=0x1-0x2-0x0
[  576.203336] iwlwifi 0000:05:00.0: Could not load the [0] uCode section
[  578.320856] iwlwifi 0000:05:00.0: Failed to run INIT ucode: -5
[  578.320875] iwlwifi 0000:05:00.0: Unable to initialize device.

I would be glad if someone could take a look at it and show me where things go wrong.

THX,

Sebastian :)

Sebastian
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1 Answers1

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Seems like your Wifi adapter gets disabled somehow, as is indicated by your lshw output.

*-network DEAKTIVIERT

While I don't know the details of your system, it is very likely that is has something to do with the on/off functionality of your Wi-Fi adapter. Do you have a physical button for this? Most laptops do. On my system there is a function button on the keyboard, which my Xubuntu ignores. The one way to disable/enable the adapter I know is via the network-manager (GUI). Click on the network symbol and make sure the Enable Wi-Fi option is checked. Maybe that helps, but of course it does not explain why your Wi-Fi automatically disables itself.

Moritz Obermeier
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