Thursday, March 21, 2013

Browser Hangs After Signing In To Sites (Gmail, Facebook, etc)

Frustrated with your search already? Jump to the solution.


In the last few days my FireFox has been hanging while trying to load sites.
More specifically, I couldn't load Gmail (or any other google page except search). It just never finished loading the page.

At first I thought it was a problem with google. But after a while I realized it's not just a problem with google, but with any site that required me to sign in (i.e. Gmail, Office365, Facebook, etc) and in retrospect I realize it also effected my FTP client.

My immediate actions were to:
  1. clear cookies, (didn't help)
  2. clear cache (only helped until I tried to sign in again)
  3. clear all data (again, only helped and I signed in)
  4. clear all browser disable extensions and add-ons (didn't help)
  5. complete new profile (only helped until I tried to sign in)
  6. check other browser. 
Lucky 6 gave me a big clue that the problem was not in the browser, but with the PC. Chrome showed the exact same symptoms. So armed with this new knowledge I cleared my cache again and began a google search for the problem and the solution.

After asking dozens of questions I finally crafted the question correctly enough so google led me to this post. I found the problem was related to MTU (some thing that controls the size of your network packets.)

Solution:

The solution almost everyone suggested is running the following code:
sudo ifconfig eth0 mtu 1492

ifconfig | grep MTU
Where eth0 is the type of connection that you have and can vary from person to person. 1492 can be 1492,1454,1452 or 1460. There is also a graphical GUI guide.

However this didn't solve my case. And although I was sure my problem was with MTU, all solution pointed to changing it from automatic to 1492 and that didn't work.

Finally I found a post which suggested to try and set it to something lower. Like a 1000. This finally solved my issues and I was able to sign in to sites again. BTW, this problem is not related only to Ubuntu.

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