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Inspiron 3521 wifi problems on Ubuntu
Hi,
Just have recently purchased the Inspiron 3521 with Ubuntu 12.04 on board. I have noticed that Wifi works very slow. I have connected the cable and Internet works on the expected speed. When connect back Wifi it stops working fast again. I found just some additional drivers installed for Graphic Card, but not to Wifi adapter. Was trying to find out the drivers to Wifi for Ubuntu but was not able to. Can anyone help me?
Here are the number:
speedtest.net results for network through cable: http://www.speedtest.net/my-result/3168525761
For wifi speedtest.net was not even completed though according to the numbers the speed was approximatelly the same.
Ping results for cable:
user@mynotebook:~/hardware$ ping google.com
PING google.com (173.194.35.164) 56(84) bytes of data.
64 bytes from muc03s02-in-f4.1e100.net (173.194.35.164): icmp_req=1 ttl=53 time=256 ms
64 bytes from muc03s02-in-f4.1e100.net (173.194.35.164): icmp_req=2 ttl=53 time=92.6 ms
64 bytes from muc03s02-in-f4.1e100.net (173.194.35.164): icmp_req=3 ttl=53 time=207 ms
64 bytes from muc03s02-in-f4.1e100.net (173.194.35.164): icmp_req=4 ttl=53 time=124 ms
64 bytes from muc03s02-in-f4.1e100.net (173.194.35.164): icmp_req=5 ttl=53 time=117 ms
64 bytes from muc03s02-in-f4.1e100.net (173.194.35.164): icmp_req=6 ttl=53 time=169 ms
Ping results for wifi:
user@mynotebook:~/hardware$ ping google.com
PING google.com (173.194.35.167) 56(84) bytes of data.
64 bytes from muc03s02-in-f7.1e100.net (173.194.35.167): icmp_req=1 ttl=53 time=638 ms
64 bytes from muc03s02-in-f7.1e100.net (173.194.35.167): icmp_req=2 ttl=53 time=696 ms
64 bytes from muc03s02-in-f7.1e100.net (173.194.35.167): icmp_req=3 ttl=53 time=805 ms
64 bytes from muc03s02-in-f7.1e100.net (173.194.35.167): icmp_req=4 ttl=53 time=561 ms
64 bytes from muc03s02-in-f7.1e100.net (173.194.35.167): icmp_req=5 ttl=53 time=537 ms
C64 bytes from muc03s02-in-f7.1e100.net (173.194.35.167): icmp_req=6 ttl=53 time=372 ms
But sometimes Wifi results looks ok, here it is:
user@mynotebook:~/hardware$ ping google.com
PING google.com (173.194.35.164) 56(84) bytes of data.
64 bytes from muc03s02-in-f4.1e100.net (173.194.35.164): icmp_req=1 ttl=53 time=67.2 ms
64 bytes from muc03s02-in-f4.1e100.net (173.194.35.164): icmp_req=2 ttl=53 time=67.5 ms
64 bytes from muc03s02-in-f4.1e100.net (173.194.35.164): icmp_req=3 ttl=53 time=66.9 ms
64 bytes from muc03s02-in-f4.1e100.net (173.194.35.164): icmp_req=4 ttl=53 time=126 ms
64 bytes from muc03s02-in-f4.1e100.net (173.194.35.164): icmp_req=5 ttl=53 time=67.0 ms
64 bytes from muc03s02-in-f4.1e100.net (173.194.35.164): icmp_req=6 ttl=53 time=66.6 ms
64 bytes from muc03s02-in-f4.1e100.net (173.194.35.164): icmp_req=7 ttl=53 time=94.8 ms
64 bytes from muc03s02-in-f4.1e100.net (173.194.35.164): icmp_req=8 ttl=53 time=72.3 ms
64 bytes from muc03s02-in-f4.1e100.net (173.194.35.164): icmp_req=9 ttl=53 time=68.2 ms
64 bytes from muc03s02-in-f4.1e100.net (173.194.35.164): icmp_req=10 ttl=53 time=139 ms
64 bytes from muc03s02-in-f4.1e100.net (173.194.35.164): icmp_req=11 ttl=53 time=67.7 ms
64 bytes from muc03s02-in-f4.1e100.net (173.194.35.164): icmp_req=12 ttl=53 time=139 ms
But what I have noticed is that though the time mentioned in results like 67.7ms etc are close to cable ping results, the delays between these lines results likewise, between
64 bytes from muc03s02-in-f4.1e100.net (173.194.35.164): icmp_req=11 ttl=53 time=67.7 ms
and
64 bytes from muc03s02-in-f4.1e100.net (173.194.35.164): icmp_req=12 ttl=53 time=139 ms
are much longer than via cable and this length of it veries during the ping.
I cant attach a file here, but here is a screenshot to the information about my hardware in Ubuntu, wifi is highlighted with red for some reason:
hardware info was gottend with Wifi turned OFF but same results are with turned ON.
Any ideas, help will be appriciated.
Thanks.
ieee488
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December 16th, 2013 06:00
http://www.ubuntuforums.com
ser-j
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December 16th, 2013 10:00
Either than to respond that way you would better do not respond at all.
What I can't understand is why Dell is shipping this notebook with Ubuntu 12.04 OS when it has so many problems like Wifi,Video card brightness hot keys, fan speed etc. Its really rediculous that the notebook doesn't work out of the box. If it doesn't work with this or that OS just do not install in on the notebook.
I have fixed the problem with Wifi but now, vidoe doesn't want to want, patch of it is required. And I found just one in the blogs, no any official one neither from Radeon nor from Ubuntu nor from Dell. I am really disappointed.
Once everything have a happy end, I will gather the set of actions in this post.
ieee488
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December 16th, 2013 11:00
Hey, if you are not interested in getting help from folks who want to help and are Ubuntu users versus people here who are mostly Windows users, then keep on doing what you are doing.
This is NOT the official Dell technical support channel, it is meant as an user-to-user message board.
Support is at http://www.dell.com/support/my-support/us/en/04/
ser-j
3 Posts
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December 16th, 2013 11:00
Ok, thanks I understood. I feel that I have resolved the problem but will be monitoring the activity later. So here we are:
1. I got Inspire 3521 with Ubuntu 12.04 LTS on board with 3.2.x linux kernel with working video but poorly working wifi - as posts describes.
2. As I figured out from some forums, Wifi driver doesn't work with this kernel that is why it was highlighted with red in my original post.
3. To upgrade 3.2.x linux kernel to 3.8.x(which is necessary to make Wifi driver work) is impossible without upgrading Ubuntu inself. Cool so far?:)
4. To update Ubuntu to 12.04.3 LTS, issue the following commands(didn't find how I can format code, so forgive me):
sudo apt-get update
sudo apt-get upgrade
After a very long run you finally got upgrade all software and "lsb_release -a" in console shows you that you have Ubuntu 12.04.3. Unfortunatelly this doesn't upgrade the kernel.
5. Upgrading the kernel to necessary version is described here: http://askubuntu.com/questions/341893/what-is-the-best-way-to-upgrade-the-kernel-in-12-04-3 credits go to this guy.
6. Once you have upgraded you kernel which by the way will be interrupted by error messages of video driver that it fails to work with this kernle version. Despite this interruption, you will get a new kernel but after rebooting you will be offered to go with low resolution since your video driver stopped working. You should accept this.You will need to reinstall it, I dig 5-6 links but the one which really was helpful is this one:
http://askubuntu.com/questions/124292/what-is-the-correct-way-to-install-ati-catalyst-video-drivers-fglrx/126513#126513 usually say that the author saved my day, in fact he saved my night :)
7. Once this is done it is asumed that you finished. I don't tell that after this upgrade Ubuntu One applicatiion fails time to time and you need either to resolve this problem or jsut turned it off or your system start.
While digging this issue I faced with the fact that keys on regulating screen brightness do not work. Someone can find solution here:
http://askubuntu.com/questions/162776/screen-brightness-of-dell-inspiron-n4050-is-not-changing
Please do not close this thread, I will be monitoring my Wifi connection. Whether the issue is fixed or not. So far I assume it is.