[SOLVED] Slow WiFi on Intel Centrino Ultimate-N 6300

Lerplin · 11-27-2017, 05:28 AM

I hope it is okay to use this thread for other issues with the Intel Cnetrino Ultimate-N 6300
I created all the config-files as suggested in this thread. My problem is not the speed (internet is way slower then 10mb/s)
but the fact that the wifi stops working after a short while, no packages seem to come through. turning the wifi on and of makes it work for a while again. I assume it is some kind of powersafe mode doing the wrong thing. Any ideas on how to fix this?

My system

Quote:

Desktop: Cinnamon 3.4.6 (Gtk 3.18.9-1ubuntu3.3) dm: lightdm Distro: Linux Mint 18.2 Sonya
Machine: System: Dell (portable) product: Latitude E6230 v: 01 Chassis: type: 9
Mobo: Dell model: 0NRJNH v: A00 Bios: Dell v: A16 date: 10/13/2016
Network: Card-1: Intel 82579LM Gigabit Network Connection
driver: e1000e v: 3.2.6-k port: f080 bus-ID: 00:19.0 chip-ID: 8086:1502
IF: eno1 state: down mac: <filter>
Card-2: Intel Centrino Ultimate-N 6300 driver: iwlwifi bus-ID: 02:00.0 chip-ID: 8086:422b
IF: wlp2s0 state: up mac: <filter>

wifi specifics:

Code:

>  lspci -v | grep -iE -5 'wifi' 
$ 02:00.0 Network controller: Intel Corporation Centrino Ultimate-N 6300 (rev 35)
	Subsystem: Intel Corporation Centrino Ultimate-N 6300 3x3 AGN
	Flags: bus master, fast devsel, latency 0, IRQ 31
	Memory at f7d00000 (64-bit, non-prefetchable) [size=8K]
	Capabilities: <access denied>
	Kernel driver in use: iwlwifi
	Kernel modules: iwlwifi

creinkaizer598 · 11-27-2017, 10:23 AM

Hmmmm. Can I tweak like that in my android too?

zentai · 04-08-2019, 02:17 PM

Dear beachboy2,

thank You for your advice! It helped me to improve my WiFi on Ubuntu 16.04. It was not bad, around 70-100 Mbps, but it was 30-40% faster on windows 10. Applying your "patch" the speed doubled, now it is around 200 Mbps.

Thanks a lot!

beachboy2 · 04-09-2019, 06:02 AM

zentai,

Glad to be of service!

adrianwalker55 · 07-19-2021, 09:49 AM

This has worked for me too . I too could not even see the Centrino WIFI card.I had to use a TPlink as a work around.I can now safely remove this and use the on board Centrino .Well flippin done and a big thank you !!!!

biwo · 02-01-2024, 10:36 AM

THX worked fine on Dell Latitude E5530 with Linux Mint 21.3 Virginia

beachboy2 · 02-02-2024, 03:12 AM

7 years on and the "Slow WiFi on Intel Centrino Ultimate-N 6300" is still a topic of conversation!

Amazing.

As with several other settings on computers and computer components, this is a classic example of a manufacturer deciding that OFF is a sensible default choice and leaving consumers baffled.

Some would describe this, very generously, as counter-intuitive.

Others would describe it as plain stupid.

Just to add that the first 3 commands on post #2 can be replaced with the following, since gksu is deprecated:

Code:

sudo apt update

Code:

sudo apt install gedit

Code:

sudo gedit /etc/NetworkManager/conf.d/default-wifi-powersave-on.conf