LinuxQuestions.org
Latest LQ Deal: Complete CCNA, CCNP & Red Hat Certification Training Bundle
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - Newbie
User Name
Password
Linux - Newbie This Linux forum is for members that are new to Linux.
Just starting out and have a question? If it is not in the man pages or the how-to's this is the place!

Notices


Reply
  Search this Thread
Old 07-17-2015, 10:18 AM   #1
kresica35
LQ Newbie
 
Registered: Jun 2015
Distribution: Linux Mint 17.1 Rebecca
Posts: 19

Rep: Reputation: Disabled
Updated wi-fi driver lost his edge?


The driver in matter is RTL8192CU fixed it some time ago following instruction: https://sites.google.com/site/easyli...and-0bda:8178-.

Since the last week or so the wi-fi signal dropped from 3.9 Mb/s to 1.4-1.5 Mb/s, currentlly it's arround 0.85-0.99 s depending on specific testing site. Don't recall of doing some major upgrades that could damage him in that period besides the updating of linux kernel required in instruction prior that new chipset driver.

My distro is Linux Mint 17.1 Rebecca Kernel Linux 3.13.0-44-generic Mate 1.8.1, network card is Level One WUA-0605. If I got the right shell inputs, outputs are:
Code:
kresica@kresica-HP-Compaq-dc7800-Small-Form-Factor ~ $ ifconfig
eth0      Link encap:Ethernet  HWaddr 00:1e:0b:64:67:c7  
          UP BROADCAST MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)
          Interrupt:19 Memory:f0000000-f0020000 

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:1453 errors:0 dropped:0 overruns:0 frame:0
          TX packets:1453 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:378370 (378.3 KB)  TX bytes:378370 (378.3 KB)

wlan0     Link encap:Ethernet  HWaddr 00:11:6b:41:52:9b  
          inet addr:192.168.0.23  Bcast:192.168.0.255  Mask:255.255.255.0
          inet6 addr: fe80::211:6bff:fe41:529b/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:33973 errors:0 dropped:1334 overruns:0 frame:0
          TX packets:32791 errors:0 dropped:1 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:36108160 (36.1 MB)  TX bytes:9602303 (9.6 MB)

kresica@kresica-HP-Compaq-dc7800-Small-Form-Factor ~ $
Code:
kresica@kresica-HP-Compaq-dc7800-Small-Form-Factor ~ $ iwconfig
wlan0     IEEE 802.11bg  ESSID:"Ilica"  Nickname:"<WIFI@REALTEK>"
          Mode:Managed  Frequency:2.412 GHz  Access Point: 00:24:D1:87:6F:8B   
          Bit Rate:54 Mb/s   Sensitivity:0/0  
          Retry:off   RTS thr:off   Fragment thr:off
          Power Management:off
          Link Quality=75/100  Signal level=37/100  Noise level=0/100
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

lo        no wireless extensions.

eth0      no wireless extensions.

kresica@kresica-HP-Compaq-dc7800-Small-Form-Factor ~ $
Code:
kresica@kresica-HP-Compaq-dc7800-Small-Form-Factor ~ $ iwlist
Usage: iwlist [interface] scanning [essid NNN] [last]
              [interface] frequency 
              [interface] channel 
              [interface] bitrate 
              [interface] rate 
              [interface] encryption 
              [interface] keys 
              [interface] power 
              [interface] txpower 
              [interface] retry 
              [interface] ap 
              [interface] accesspoints 
              [interface] peers 
              [interface] event 
              [interface] auth 
              [interface] wpakeys 
              [interface] genie 
              [interface] modulation 
kresica@kresica-HP-Compaq-dc7800-Small-Form-Factor ~ $
Code:
kresica@kresica-HP-Compaq-dc7800-Small-Form-Factor ~ $ sudo lshw -C network
[sudo] password for kresica: 
  *-network               
       description: Ethernet interface
       product: 82566DM-2 Gigabit Network Connection
       vendor: Intel Corporation
       physical id: 19
       bus info: pci@0000:00:19.0
       logical name: eth0
       version: 02
       serial: 00:1e:0b:64:67:c7
       capacity: 1Gbit/s
       width: 32 bits
       clock: 33MHz
       capabilities: pm msi bus_master cap_list ethernet physical tp 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=e1000e driverversion=2.3.2-k firmware=1.3-1 latency=0 link=no multicast=yes port=twisted pair
       resources: irq:43 memory:f0000000-f001ffff memory:f0025000-f0025fff ioport:2100(size=32)
  *-network
       description: Wireless interface
       physical id: 1
       bus info: usb@1:4
       logical name: wlan0
       serial: 00:11:6b:41:52:9b
       capabilities: ethernet physical wireless
       configuration: broadcast=yes driver=rtl8192cu ip=192.168.0.23 multicast=yes wireless=IEEE 802.11bg
kresica@kresica-HP-Compaq-dc7800-Small-Form-Factor ~ $
So, what's the next step in boosting wi-fi again boss?
 
Old 07-18-2015, 03:00 AM   #2
jdkaye
LQ Guru
 
Registered: Dec 2008
Location: Westgate-on-Sea, Kent, UK
Distribution: Debian Testing Amd64
Posts: 5,465

Rep: Reputation: Disabled
I'm curious about the out of sudo lshw -C network
Code:
*-network
       description: Wireless interface
       physical id: 1
       bus info: usb@1:4
       logical name: wlan0
       serial: 00:11:6b:41:52:9b
       capabilities: ethernet physical wireless
       configuration: broadcast=yes driver=rtl8192cu ip=192.168.0.23 multicast=yes wireless=IEEE 802.11bg
Compare that with the output of my system.
Code:
  *-network
       description: Wireless interface
       physical id: 1
       bus info: usb@2:2.4
       logical name: wlan1
       serial: 00:0b:81:ab:19:0a
       capabilities: ethernet physical wireless
       configuration: broadcast=yes driver=r8712u ip=192.168.1.64 multicast=yes wireless=IEEE 802.11bgn
If you haven't inadvertently cut off the final letter of your output, you wifi adapter doesn't seem to support 802.11n. I before I switched adapters (to one that does support 802.11n I was getting speeds of just of 1MB/s (that's bytes not bits. When put in a dongle that did support 802.11n my speed immediately jumped to over 4MB/s (which was the advertised speed for my connection).
So do your really mean "bits" when talking about speed or is it bytes? If it's the latter then the lack of support for 802.11n may be the answer to your question.
jdk
 
1 members found this post helpful.
Old 07-18-2015, 03:37 AM   #3
ferrari
Senior Member
 
Registered: Sep 2003
Location: Auckland, NZ
Distribution: openSUSE Leap
Posts: 2,289

Rep: Reputation: 363Reputation: 363Reputation: 363Reputation: 363
Code:
 Bit Rate:54 Mb/s   Sensitivity:0/0  
          Retry:off   RTS thr:off   Fragment thr:off
          Power Management:off
          Link Quality=75/100  Signal level=37/100  Noise level=0/100
There's no evidence that anything is wrong with your wireless connection. The signal level is reasonable and the modulation rate is good for 54Mbps. Your speed could well be to do with contention (congestion) with respect to your service provider's network.
 
Old 07-18-2015, 03:39 AM   #4
kresica35
LQ Newbie
 
Registered: Jun 2015
Distribution: Linux Mint 17.1 Rebecca
Posts: 19

Original Poster
Rep: Reputation: Disabled
@jdkaye:

I see. No that wasn't a typo, did a re-check of "sudo lshw -C network" in Terminal adapter doesn't seem to support 802.11n. I guess that setlles it than. Thanks!
 
Old 07-18-2015, 07:22 AM   #5
jdkaye
LQ Guru
 
Registered: Dec 2008
Location: Westgate-on-Sea, Kent, UK
Distribution: Debian Testing Amd64
Posts: 5,465

Rep: Reputation: Disabled
Quote:
Originally Posted by kresica35 View Post
@jdkaye:

I see. No that wasn't a typo, did a re-check of "sudo lshw -C network" in Terminal adapter doesn't seem to support 802.11n. I guess that setlles it than. Thanks!
You're quite welcome but it doesn't explain how you managed 3.9 MB/s the week before while using 802.11bg. Also are we talking about 3.9MB/s or 3.9Mb/s?
jdk
 
Old 07-18-2015, 12:25 PM   #6
kresica35
LQ Newbie
 
Registered: Jun 2015
Distribution: Linux Mint 17.1 Rebecca
Posts: 19

Original Poster
Rep: Reputation: Disabled
@jdkaye:

It was 3.9 Mb/s not 3.9 MB/s that one time. Never had thoose MB's in my wi-fi signal, why?

Last edited by kresica35; 07-18-2015 at 01:04 PM.
 
Old 07-18-2015, 02:17 PM   #7
jdkaye
LQ Guru
 
Registered: Dec 2008
Location: Westgate-on-Sea, Kent, UK
Distribution: Debian Testing Amd64
Posts: 5,465

Rep: Reputation: Disabled
Because even 3.9 Mb/s in incredibly slow and 1.4 Mb/s makes a snail seem speedy. Can you do an online speed test and report back what speed you're getting. You can test your speed on this site.
jdk

Last edited by jdkaye; 07-19-2015 at 12:18 AM.
 
Old 07-18-2015, 06:34 PM   #8
ferrari
Senior Member
 
Registered: Sep 2003
Location: Auckland, NZ
Distribution: openSUSE Leap
Posts: 2,289

Rep: Reputation: 363Reputation: 363Reputation: 363Reputation: 363
Where's the solution you claim? The logical approach would have been to compare wired speed tests against your wireless (assuming your router provides an ethernet port as well), or even against another (eg USB) wireless device. There's no evidence so far that there is an issue with your wireless connectivity.
 
Old 07-19-2015, 04:21 AM   #9
kresica35
LQ Newbie
 
Registered: Jun 2015
Distribution: Linux Mint 17.1 Rebecca
Posts: 19

Original Poster
Rep: Reputation: Disabled
Last results at speedtest.net: DL 1.73 Mbps; UL 0.37; PING 298 ms.
ISP's in my country in most cases aren't so keen as to servicing theirs infrastructure as to collecting bills, I think lower signal is mostly due to that.
But never mind that now. Provided speeds are sufficient for me to use the Internet for all of my needs - like say simultaneously running radio or movie in stream, downloading few torrents, and checking my e-mail. For instance.
That will have to do untill something better comes along.

If it's all the same to You, I'll be leaving this thread at peace now.
 
Old 07-19-2015, 04:28 AM   #10
ferrari
Senior Member
 
Registered: Sep 2003
Location: Auckland, NZ
Distribution: openSUSE Leap
Posts: 2,289

Rep: Reputation: 363Reputation: 363Reputation: 363Reputation: 363
Quote:
Last results at speedtest.net: DL 1.73 Mbps; UL 0.37; PING 298 ms.
ISP's in my country in most cases aren't so keen as to servicing theirs infrastructure as to collecting bills, I think lower signal is mostly due to that.
That's a shame. (BTW, the wifi signal level you reported was actually okay, so unlikely to be the reason for low throughput.)
Quote:
But never mind that now. Provided speeds are sufficient for me to use the Internet for all of my needs - like say simultaneously running radio or movie in stream, downloading few torrents, and checking my e-mail. For instance.
That will have to do untill something better comes along.

If it's all the same to You, I'll be leaving this thread at peace now.
Fine by me

Last edited by ferrari; 07-19-2015 at 04:30 AM.
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off



Similar Threads
Thread Thread Starter Forum Replies Last Post
Updated F18- lost my display Crzyrev Fedora 1 07-09-2013 05:27 PM
updated SUSE 10.0, lost modem accessbob SUSE / openSUSE 2 12-08-2006 10:40 AM
updated SUSE 10.0, lost modem accessbob SUSE / openSUSE 1 12-07-2006 11:14 AM
help -- updated kernel -- lost commands nomb Fedora 3 08-12-2006 10:15 PM
FC2 updated kernel and lost cd burner azebuski Linux - Hardware 1 09-29-2004 10:47 PM

LinuxQuestions.org > Forums > Linux Forums > Linux - Newbie

All times are GMT -5. The time now is 05:31 PM.

Main Menu
Advertisement
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration