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web browser freezing

 
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guy
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Joined: Thu Apr 07, 2005 1:07 pm
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PostPosted: Fri Jun 08, 2012 7:32 pm    Post subject: web browser freezing Reply with quote

Using Firefox (aka Iceweasel) 3.5.16 on debian stable, the browser window has recently taken to periodically freezing for perhaps half a minute or so: no update, no response to mouse/keyboard, other windows' images persist when moved over it and off again. Sometimes, after a bit clicking another app will wake it up. All a bit too much like Windows for my liking.
System Monitor shows minimal resources used, no noticeable change when a freeze happens.
Especially bad when editing Wikipedia.
Any ideas?
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MartyBartfast
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PostPosted: Fri Jun 08, 2012 8:34 pm    Post subject: Reply with quote

try it in safe mode (help / restart with add ons disabled), and see if the problem persists, if it goes away then the problem is one of your add-ons/plugins/themes/... If you've still got the problem then you know it's more fundamental.
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guy
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PostPosted: Fri Jun 08, 2012 9:58 pm    Post subject: Reply with quote

Yeah, that does seem to have fixed it, thanks.

But now I have an insecure browser and annoying **** all over the web.

Think I'll restore them one by one, starting now.
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MartyBartfast
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PostPosted: Fri Jun 08, 2012 10:05 pm    Post subject: Reply with quote

guy wrote:

Think I'll restore them one by one, starting now.

That's the way to go, it could take a while but should get you to the culprit in the end.
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guy
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PostPosted: Fri Jun 15, 2012 11:26 pm    Post subject: Re: web browser freezing Reply with quote

guy wrote:
All a bit too much like Windows for my liking.

Yeah, and it's not just Firefox. Epiphany and Evolution both showing similar behaviour - even when not overtly downloading. Still barely a ripple of resources used.

Something is tying up HD bandwidth and/or hanging on the ntetwork to tell it something.

If this was the office Windows desktop I'd blame a corprate server somewhere. Windows at home, I'd diagnose a malware infection.

Debian stable? I never heard of a Linux exploit that stopped stuff in its tracks.

Dying HD and/or network cable perhaps? I can't change those ATM. Any more ideas?
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nordle
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PostPosted: Sat Jun 16, 2012 12:21 am    Post subject: Reply with quote

sudo apt-get install iptraf iptop

A combination of those, statistical packet data from iptraf, and ip addresses from iptop could give you an answer. Actually you don't need iptop, but its quite useful.
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nelz
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PostPosted: Sat Jun 16, 2012 12:29 am    Post subject: Reply with quote

Installing smartctl and running some tests would also be a good idea.
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Ram
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PostPosted: Sat Jun 16, 2012 12:57 am    Post subject: Reply with quote

You mean FF just goes grey forever how long ?
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guy
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PostPosted: Sat Jun 16, 2012 1:49 pm    Post subject: Reply with quote

@ nordle, nelz: thanks. When I get time to spare I'll take a look - might just use the aptitude GUI instead to install them Razz

@ RAM, FF & others freeze for varying times from a few seconds to half a minute or more. Sometimes all freeze, other times I can work in one while another clears itself. This morning I've had the first half-hour of complete normality for many days.
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Ram
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PostPosted: Sat Jun 16, 2012 2:05 pm    Post subject: Reply with quote

Is it cooler in your house today by any chance? - could be a temp issue.
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nordle
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PostPosted: Sat Jun 16, 2012 2:33 pm    Post subject: Reply with quote

hdparm -tT /dev/whatever_your_hard_drive_is_eg_sda

Once when I had a dodgy hd on a laptop, instead of seeing 30MB/sec it was down to 120k/sec Shocked

As Nelz said, smartctl will help prove if a drive is failing.

It's been a while since IPV6 caused issues, but an outside possibiity.

Try pinging your router and google.com and seeing if you lose any/many packets.


sudo ping -w 30 -f google.com

PING google.com (173.194.34.110) 56(84) bytes of data.
--- google.com ping statistics ---
2343 packets transmitted, 2342 received, 0% packet loss, time 29993ms
rtt min/avg/max/mdev = 20.773/22.672/51.441/1.198 ms, pipe 4, ipg/ewma 12.806/22.385 ms

Average 22ms is ok.


sudo ping -w 30 -f 192.168.0.1 (whatever router/modem is)

PING 192.168.0.1 (192.168.0.1) 56(84) bytes of data.
--- 192.168.0.1 ping statistics ---
31240 packets transmitted, 31239 received, 0% packet loss, time 29999ms
rtt min/avg/max/mdev = 0.765/0.937/23.653/0.248 ms, pipe 3, ipg/ewma 0.960/0.927 ms

0.96ms is what you'd expect to see from a gigabit LAN.
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