I have a strange problem: My WiFi connection is partwise very slow and sometimes works as expected.
My situation is the following: Sometimes I recognize that my connection is very slow, e.g. streams/videos switch to a low quality. I then simply qualify my current WiFi connection speed with speedtest.net. This provides me at least a rough information about my connection.
In the good cases, I see about 21Mbps download - when my WiFi connection is bad, I get around 2,5 Mbps. Having my notebook exactly on the same spot
When my wife runs speedtest, she constantly gets speeds around 21Mbps - no matter what result I get. So I assume that this is not a (temporary) problem of the WiFi setup.
I have also observed the following: I tried to reset my Fritzbox WiFi and e.g. switch to another channel. No change. I tried to disable and reenable my WiFi. No change. However, when I reboot my machine, I can also get to 21Mbps.
From the information provided by my router, I cannot see a difference between the "fast" and the "slow" situation. It always shows me:
2,4 GHz / n / 20 MHz (WLAN-n+b+g)
To be honest, I am a great fan of Linux Mint but out of ideas where to go from here. I have searched trough multiple "wifi slow" posts and through the internet, but I did not succeed with any of these hints. I am simply not experienced enough on what exactly to look or search for...
So can anyone please guide me in the right direction on where to look for differences? I assume there must be a difference somewhere in loading the driver or anything I am not aware of
I am running the following setup:
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~$ inxi -Fxz System: Host: ... Kernel: 4.15.0-55-generic x86_64 bits: 64 compiler: gcc v: 7.4.0 Desktop: Cinnamon 4.0.10 Distro: Linux Mint 19.1 Tessa base: Ubuntu 18.04 bionic Machine: Type: Portable System: Dell product: XPS L701X v: A06 serial: <filter> Mobo: Dell model: N/A v: A06 serial: <filter> BIOS: Dell v: A06 date: 11/29/2010 CPU: Topology: Quad Core model: Intel Core i7 Q 740 bits: 64 type: MT MCP arch: Nehalem rev: 5 L2 cache: 6144 KiB flags: lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 27664 Speed: 931 MHz min/max: 933/1734 MHz Core speeds (MHz): 1: 1049 2: 950 3: 951 4: 1001 5: 988 6: 1040 7: 959 8: 939 Network: Device-1: Intel Centrino Wireless-N 1000 [Condor Peak] driver: iwlwifi v: kernel port: 2000 bus ID: 04:00.0 IF: wlp4s0 state: up mac: <filter> Device-2: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet vendor: Dell driver: r8169 v: 2.3LK-NAPI port: 6000 bus ID: 0a:00.0 IF: enp10s0 state: down mac: <filter> Info: Processes: 268 Uptime: 11m Memory: 7.72 GiB used: 1.78 GiB (23.1%) Init: systemd runlevel: 5 Compilers: gcc: 7.4.0 Shell: bash v: 4.4.20 inxi: 3.0.27
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lshw -C network *-network description: Wireless interface product: Centrino Wireless-N 1000 [Condor Peak] vendor: Intel Corporation physical id: 0 bus info: pci@0000:04:00.0 logical name: wlp4s0 version: 00 serial: 00:26:c7:fb:01:3e width: 64 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=iwlwifi driverversion=4.15.0-55-generic firmware=220.127.116.11 build 35138 ip=192.168.178.27 latency=0 link=yes multicast=yes wireless=IEEE 802.11 resources: irq:40 memory:f0700000-f0701fff