[SOLVED] Problem with some wifi networks

Gaspi · 2018-05-10 08:19:57

Hi. I'm new to Arch and I just run into a very annoying problem.
The issue is that some wifi networks, the ones at my high school so far, do not work correctly. My laptop connects to them as it should but after a few minutes it fails to access the internet while still conected to wifi. Internet access comes back every few minutes but only for some seconds and it becomes unusable. I've got this issue with four different wifi networs: two of them are PEAP, one has no security but has later uthentification and the last one is a personal WPA/WPA2. I can connect to all four with any other device. Also, I don't this the problem is location-related as I can turn on my phone wifi access point mode and my laptop connects to it correctly. I've researched for information about this issue, but it's such a weird one that I don't really know how to describe it better than this. Please, any help is very much appreciated.

Last edited by Gaspi (2018-05-17 06:59:14)

seth · 2018-05-10 10:54:31

The usual suspect:

systemctl list-unit-files --state=enabled

Also check your journal around the incidents.

Gaspi · 2018-05-14 07:22:44

Running the command seems to fix nothing. It shows:

UNIT FILE                                   STATE  
autovt@.service                             enabled
bluetooth.service                           enabled
dbus-org.bluez.service                      enabled
dbus-org.freedesktop.NetworkManager.service enabled
dbus-org.freedesktop.nm-dispatcher.service  enabled
dhcpcd.service                              enabled
display-manager.service                     enabled
getty@.service                              enabled
NetworkManager-dispatcher.service           enabled
NetworkManager.service                      enabled
sddm.service                                enabled
remote-fs.target                            enabled

12 unit files listed.

And journalctl right after the issue shows this:

-- Logs begin at Sun 2018-04-29 10:46:23 CEST, end at Mon 2018-05-14 09:11:13 CEST. --
abr 29 10:46:23 CHUPCHUP kernel: microcode: microcode updated early to revision 0x23, date = 2018-01-18
abr 29 10:46:23 CHUPCHUP kernel: Linux version 4.16.5-1-ARCH (builduser@heftig-11182) (gcc version 7.3.1 20180406 (GCC)) #1 SMP PREEMPT Thu Apr 26 16:53:40 UTC 2018
abr 29 10:46:23 CHUPCHUP kernel: Command line: BOOT_IMAGE=/vmlinuz-linux root=UUID=1bffc021-8df0-433b-92bf-35642340ea98 rw quiet
abr 29 10:46:23 CHUPCHUP kernel: KERNEL supported cpus:
abr 29 10:46:23 CHUPCHUP kernel:   Intel GenuineIntel
abr 29 10:46:23 CHUPCHUP kernel:   AMD AuthenticAMD
abr 29 10:46:23 CHUPCHUP kernel:   Centaur CentaurHauls
abr 29 10:46:23 CHUPCHUP kernel: x86/fpu: Supporting XSAVE feature 0x001: 'x87 floating point registers'
abr 29 10:46:23 CHUPCHUP kernel: x86/fpu: Supporting XSAVE feature 0x002: 'SSE registers'
abr 29 10:46:23 CHUPCHUP kernel: x86/fpu: Supporting XSAVE feature 0x004: 'AVX registers'
abr 29 10:46:23 CHUPCHUP kernel: x86/fpu: xstate_offset[2]:  576, xstate_sizes[2]:  256
abr 29 10:46:23 CHUPCHUP kernel: x86/fpu: Enabled xstate features 0x7, context size is 832 bytes, using 'standard' format.
abr 29 10:46:23 CHUPCHUP kernel: e820: BIOS-provided physical RAM map:
abr 29 10:46:23 CHUPCHUP kernel: BIOS-e820: [mem 0x0000000000000000-0x000000000006efff] usable
abr 29 10:46:23 CHUPCHUP kernel: BIOS-e820: [mem 0x000000000006f000-0x000000000006ffff] reserved
abr 29 10:46:23 CHUPCHUP kernel: BIOS-e820: [mem 0x0000000000070000-0x0000000000087fff] usable
abr 29 10:46:23 CHUPCHUP kernel: BIOS-e820: [mem 0x0000000000088000-0x00000000000bffff] reserved
abr 29 10:46:23 CHUPCHUP kernel: BIOS-e820: [mem 0x0000000000100000-0x000000009c0befff] usable
abr 29 10:46:24 CHUPCHUP kernel: BIOS-e820: [mem 0x000000009c0bf000-0x000000009c4befff] type 20
abr 29 10:46:24 CHUPCHUP kernel: BIOS-e820: [mem 0x000000009c4bf000-0x000000009cebefff] reserved
abr 29 10:46:24 CHUPCHUP kernel: BIOS-e820: [mem 0x000000009cebf000-0x000000009cfbefff] ACPI NVS
abr 29 10:46:24 CHUPCHUP kernel: BIOS-e820: [mem 0x000000009cfbf000-0x000000009cffefff] ACPI data
abr 29 10:46:24 CHUPCHUP kernel: BIOS-e820: [mem 0x000000009cfff000-0x000000009cffffff] usable
abr 29 10:46:24 CHUPCHUP kernel: BIOS-e820: [mem 0x000000009d000000-0x000000009f9fffff] reserved
abr 29 10:46:24 CHUPCHUP kernel: BIOS-e820: [mem 0x00000000e0000000-0x00000000efffffff] reserved
abr 29 10:46:24 CHUPCHUP kernel: BIOS-e820: [mem 0x00000000fe101000-0x00000000fe112fff] reserved
abr 29 10:46:24 CHUPCHUP kernel: BIOS-e820: [mem 0x00000000feb00000-0x00000000feb0ffff] reserved
abr 29 10:46:24 CHUPCHUP kernel: BIOS-e820: [mem 0x00000000fec00000-0x00000000fec00fff] reserved
abr 29 10:46:24 CHUPCHUP kernel: BIOS-e820: [mem 0x00000000fed00000-0x00000000fee00fff] reserved
abr 29 10:46:24 CHUPCHUP kernel: BIOS-e820: [mem 0x00000000ffb00000-0x00000000ffffffff] reserved
abr 29 10:46:24 CHUPCHUP kernel: BIOS-e820: [mem 0x0000000100000000-0x000000025f5fffff] usable
abr 29 10:46:24 CHUPCHUP kernel: NX (Execute Disable) protection: active
abr 29 10:46:24 CHUPCHUP kernel: efi: EFI v2.31 by INSYDE Corp.
abr 29 10:46:24 CHUPCHUP kernel: efi:  ACPI=0x9cffe000  ACPI 2.0=0x9cffe014  SMBIOS=0x9cebdf18 
abr 29 10:46:24 CHUPCHUP kernel: SMBIOS 2.7 present.
abr 29 10:46:24 CHUPCHUP kernel: DMI: Hewlett-Packard HP Spectre 13 x2 PC/2152, BIOS F.19 12/26/2013
abr 29 10:46:24 CHUPCHUP kernel: e820: update [mem 0x00000000-0x00000fff] usable ==> reserved
abr 29 10:46:24 CHUPCHUP kernel: e820: remove [mem 0x000a0000-0x000fffff] usable
abr 29 10:46:24 CHUPCHUP kernel: e820: last_pfn = 0x25f600 max_arch_pfn = 0x400000000
abr 29 10:46:24 CHUPCHUP kernel: MTRR default type: uncachable
abr 29 10:46:24 CHUPCHUP kernel: MTRR fixed ranges enabled:
abr 29 10:46:24 CHUPCHUP kernel:   00000-9FFFF write-back
abr 29 10:46:24 CHUPCHUP kernel:   A0000-BFFFF uncachable
abr 29 10:46:24 CHUPCHUP kernel:   C0000-E7FFF write-protect
abr 29 10:46:24 CHUPCHUP kernel:   E8000-EFFFF write-combining
abr 29 10:46:24 CHUPCHUP kernel:   F0000-FFFFF write-protect
abr 29 10:46:24 CHUPCHUP kernel: MTRR variable ranges enabled:
abr 29 10:46:24 CHUPCHUP kernel:   0 base 0000000000 mask 7C00000000 write-back
abr 29 10:46:24 CHUPCHUP kernel:   1 base 009D000000 mask 7FFF000000 uncachable
abr 29 10:46:24 CHUPCHUP kernel:   2 base 009E000000 mask 7FFE000000 uncachable
abr 29 10:46:24 CHUPCHUP kernel:   3 base 00A0000000 mask 7FE0000000 uncachable
abr 29 10:46:24 CHUPCHUP kernel:   4 base 00C0000000 mask 7FC0000000 uncachable
abr 29 10:46:24 CHUPCHUP kernel:   5 disabled
abr 29 10:46:24 CHUPCHUP kernel:   6 disabled
abr 29 10:46:24 CHUPCHUP kernel:   7 disabled
abr 29 10:46:24 CHUPCHUP kernel:   8 disabled
abr 29 10:46:24 CHUPCHUP kernel:   9 disabled
abr 29 10:46:24 CHUPCHUP kernel: x86/PAT: Configuration [0-7]: WB  WC  UC- UC  WB  WP  UC- WT  
abr 29 10:46:24 CHUPCHUP kernel: total RAM covered: 14800M
abr 29 10:46:24 CHUPCHUP kernel: Found optimal setting for mtrr clean up
abr 29 10:46:24 CHUPCHUP kernel:  gran_size: 64K         chunk_size: 64M         num_reg: 6          lose cover RAM: 0G
abr 29 10:46:24 CHUPCHUP kernel: e820: update [mem 0x9d000000-0xffffffff] usable ==> reserved

I'm not really sure about how to interpretate this. Thanks for the help.

Sorry for the late response, but as I said this only happens at my high school and I can only test things there.

Last edited by Gaspi (2018-05-14 09:14:31)

jasonwryan · 2018-05-14 07:26:17

Please use code tags when passting to the boards: https://wiki.archlinux.org/index.php/Co … s_and_code

You have multiple network services enabled: pick on (presumably NM), otherwise they will conflict.

Gaspi · 2018-05-14 09:18:47

Sorry for the bad posting conduct. I've just edited the post.

How do you see that I have multiple network services? I don't know what to remove or what to do. If you can, please specify as I'm such a noobie user. Thank you for your help.

Slithery · 2018-05-14 09:27:37

The earlier command wasn't supposed to fix anything, just to show us which services you have enabled, you have both the dhcpcd and NetworkManager services running.

Disable the dhcpcd service if you want to use NetworkManager.

Gaspi · 2018-05-14 09:42:06

Thank you very much for the clarification, everything seems to work fine by now!

Again, thank you!

Slithery · 2018-05-14 09:56:48

Glad we could help.

Please remember to mark this thread [SOLVED].
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#1 2018-05-10 08:19:57

[SOLVED] Problem with some wifi networks

#2 2018-05-10 10:54:31

Re: [SOLVED] Problem with some wifi networks

#3 2018-05-14 07:22:44

Re: [SOLVED] Problem with some wifi networks

#4 2018-05-14 07:26:17

Re: [SOLVED] Problem with some wifi networks

#5 2018-05-14 09:18:47

Re: [SOLVED] Problem with some wifi networks

#6 2018-05-14 09:27:37

Re: [SOLVED] Problem with some wifi networks

#7 2018-05-14 09:42:06

Re: [SOLVED] Problem with some wifi networks

#8 2018-05-14 09:56:48

Re: [SOLVED] Problem with some wifi networks

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