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WiFi speed on Fedora24: Live 200 Mbps, Installed 54 Mbps

asked 2016-11-05 08:12:44 -0500

Hi guys,

I recently switched from Ubuntu to Fedora 24 on my wife's laptop, a Toshiba L50-B2-CQ having a Intel 3160 AC WiFi adapter.

On Windows, the laptop (on WiFi) ran 20-23 MB/s download speeds.

Switched to Ubuntu and speed dropped to 7-8 MB/s. Tried for a couple of nigths to repair it (tried different iwl-wifi firmware versions, tried to force autoneg to off etc.) but nothing worked. Speedtest.net reported max 60 Mbps result.

Thought of switching to Fedora, got 24 and ran a live session at first, to see if everything runs properly.

Wifi speed on speedtest.net was showing 200-215 Mbps, clearly an improvment over Ubuntu, so I did a format of the HDD and fresh install of Fedora 24.

To my surprise, after installing the OS, Fedora is acting the same as Ubuntu - speedtest.net showing max 60 Mbps and download speed does not go above 7-8 MB/s.

The internet connection is a 1 Gbps FTTH going into a Dlink DIR-850L, broadcasting two Wifi networks - 2,4 Ghz b/g/n and 5 Ghz mixed b/g/n/ac.

The laptop onlys stays on the 5 Ghz network.

Network properties in Fedora shows a 300 Mbps link to the network.

Read somewhere that TKIP may cause issues (and TKIP is enabled from what I see in iwlist -scan), but this router does not have the option to turn off TKIP (I can only choose between WEP and WPA-personal security).

How and why did the live image run so fast and the local install goes only 54 Mbps?

Any ideas?

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answered 2016-11-14 10:32:22 -0500

updated 2016-11-16 14:22:36 -0500

Further updates: linkspeed as shown by the Network Manager varies between 180-300 Mbps (skips at about 3-5 seconds). Dunno if it should do that, looks unstable to me.

Tried cable connection last night - it goes up to 850 Mbps, download speeds 65-80 MB/s, so the wired part looks good.

I'm beginning to suspect the router, in which case the only solution will be a replacement. I already ordered a new router to see how it handles the WiFi connection, but the current one does not seem to do a good job at all.

LE: new router has arrived (ASUS RT-AC1200G+) and WiFi speed went up to full 300 Mbps, so it turns out the router was problematic. Happy user right now.

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Asked: 2016-11-05 08:12:44 -0500

Seen: 230 times

Last updated: Nov 16 '16