Ubuntu Networking :: RTL8187B + Dlink DI-524 Give Slow Internet Connection
Mar 31, 2010
I've just installed Ubuntu 9.10 in my laptop. Everything works fine except for my wireless. It works, but much, very much slower the through RJ45, which is perfectly ok. When using wireless i can't even connect to any online messaging service and I need to reload pages oftenly. My security setting is WEP 128 bits ASCII and since I'm trying to follow the format suggested on the thread "HOWTO post a Wireless issue" I'll try to provide the infos like requested on it. Laptop brand and model (I'm from Brasil, so it's a brasilian model)
Code:
Semp Toshiba IS 1412
Wireless Card
Code:
ID 0bda:8189 Realtek Semiconductor Corp. RTL8187B Wireless 802.11g 54Mbps Network Adapter
Interface
[code]....
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Dec 15, 2008
I use Slackware 12.1 and I have a big problem that I can't solve by myself. I'm connecting to a LAN where there are almost 20 PC connected, all with static IP.
my ip: 192.168.1.205
netmask: 255.255.255.0
gateway: 192.168.1.1
DNS server: 80.58.61.250, 80.58.61.254
I configured manually it but it doesn't works well. I set up the DHCP server on Windows 2003 so I tried to configure it with dhcp too. It gives addresses from 192.168.1.200 to 192.168.1.240 there are no PCs connected with DHCP at the moment, so my IP is only mine.
My problem is the following:
bash-3.1# ifconfig
eth0 Link encap:Ethernet HWaddr 00:1e:68:3d:1b:ad
inet addr:192.168.1.201 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::21e:68ff:fe3d:1bad/64 Scope:Link
Up Broadcast Running Multicast MTU:1500 Metric:1
RX packets:77 errors:0 dropped:0 overruns:0 frame:0
TX packets:44 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:7041 (6.8 KiB) TX bytes:6282 (6.1 KiB)
Interrupt:17 Base address:0xc000
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:16436 Metric:1
RX packets:1810 errors:0 dropped:0 overruns:0 frame:0
TX packets:1810 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:90500 (88.3 KiB) TX bytes:90500 (88.3 KiB)
bash-3.1# route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
localnet * 255.255.255.0 U 0 0 0 eth0
loopback * 255.0.0.0 U 0 0 0 lo
default 192.168.1.1 0.0.0.0 UG 1 0 0 eth0
bash-3.1# ping www.google.es
PING www.l.google.com (66.102.9.99) 56(84) bytes of data.
64 bytes from 66.102.9.99: icmp_seq=1 ttl=243 time=78.7 ms
64 bytes from 66.102.9.99: icmp_seq=2 ttl=243 time=84.2 ms
64 bytes from 66.102.9.99: icmp_seq=3 ttl=243 time=75.1 ms
64 bytes from 66.102.9.99: icmp_seq=4 ttl=243 time=82.1 ms
64 bytes from 66.102.9.99: icmp_seq=5 ttl=243 time=82.8 ms
64 bytes from 66.102.9.99: icmp_seq=6 ttl=243 time=79.4 ms
64 bytes from 66.102.9.99: icmp_seq=7 ttl=243 time=82.3 ms
64 bytes from 66.102.9.99: icmp_seq=8 ttl=243 time=75.2 ms
64 bytes from 66.102.9.99: icmp_seq=9 ttl=243 time=80.7 ms
64 bytes from 66.102.9.99: icmp_seq=10 ttl=243 time=84.7 ms
64 bytes from 66.102.9.99: icmp_seq=11 ttl=243 time=75.0 ms
64 bytes from 66.102.9.99: icmp_seq=12 ttl=243 time=82.2 ms
64 bytes from 66.102.9.99: icmp_seq=13 ttl=243 time=85.1 ms
64 bytes from 66.102.9.99: icmp_seq=14 ttl=243 time=80.9 ms
64 bytes from 66.102.9.99: icmp_seq=15 ttl=243 time=87.7 ms
64 bytes from 66.102.9.99: icmp_seq=16 ttl=243 time=87.6 ms
64 bytes from 66.102.9.99: icmp_seq=17 ttl=243 time=83.2 ms
(...)
- www.l.google.com ping statistics -
49 packets transmitted, 48 received, 2% packet loss, time 560804ms
rtt min/avg/max/mdev = 73.624/80.945/87.725/3.823 ms
It takes a lot of time connecting to a internet web site! It's really strange because downloading a file the transferring rate is good, it takes some time starting, but it works normally. I wait almost 7 seconds after seeing a web site. All the others PC's (windows xp) can connect perfectly to network using static and DHCP. Trying with another wire in another room I've got the same result. My /etc/resolve.conf is configured with the IPs specified upper in this page.
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Jan 17, 2010
I set up my linux router as a simple NAT router. I use CentOS 5.4. When I set up ISP proxy IP in the browser of client PC, Internet access is fast. When I remove ISP proxy IP from the browser, Internet access is slow.
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ISP announce that we can use transparent caching or manual caching.
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Jan 3, 2011
I bought a new Laptop 2 week ago. It works well, but internet connection ist very slow. I use cable internet speed 25Mbit/s, normal with my old Laptop (Window xp) I can DL with speeds ca.1 Mbit/s but with this new ca. 15 kbit/s (same file). too much different!!! If anyone know, how to troubleshoot this problem, please tell me. And i get a advice that i should crate a new connection using the "workgroup" model instead. I've tried to do but failed. Who knows "how to" please explain it for me.
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May 12, 2011
I've installed recently Ubuntu 11.04 and the first problem that I had was with my wireless lan card Wl-138g V2. The card was not enabled by the system, however after following one of Ubuntu's forum thread I managed to solve it, but... and there is always a but the internet speed is very low.When I had windows installed I faced the same problem and it was solved with an update in the driver, does any one experienced the same in Ubunutu? How did you solve it?
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I'm running Kubuntu 10.4, and I'm having a really slow Internet connection, with Windows everything works fine.
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Mar 2, 2010
I just got my internet working through the wireless card with some help. However, my downloading speeds are beyond extremely slow. While I type on this computer, I am downloading things @ ~500-700kb/s, but when I try to download the package updates etc for my Ubuntu 9.10 laptop, It downloads @ ~ 4k b/s- which is UNBEARABLY slow, putting me at 14h left to complete a 200 mb update. Dell Inspiron 1100. Ubuntu 9.10
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Dec 10, 2010
I've been troubleshooting this problem for several hours now and I'm out of ideas. My internet connection is fine in Windows 7 but an older computer I resurrected (AMD Athlon 1.7 GHz, 512 MB RAM, Fedora 14 Security Lab Spin) is having the stop-and-go's with its internet connection. It will work for very briefly, then it gets extremely slow, where any page I try to navigate to in Firefox 3.6 takes forever to load.I have a DSL connection and my DSL modem is connected to a Linksys WRT54G2 router. I set up a static IP in Windows but don't know how to do this yet in Fedora 14, and I need to get my internet connection working so I can troubleshoot further, but with it being so slow, I'm having to use Windows to search for problems and then switch over to the Fedora box via KVM (IOGEAR), which I also just started using. I don't think that would be related, but who knows.
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Jun 12, 2011
I'm a newbie and try to switch from Win7 to Ubuntu 11.04 with unity desktop.
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Jul 17, 2009
I am a convert from Ubuntu (9.04 kept freezing on my laptop; when it did work, many packages it seemed were outdated--ie only Eclipse 3.2, rdesktop was messed up [and apparently is also in Fedora]), and I am having some trouble with getting my wireless working.I am running Fedora 11.First off, there is a problem when trying to connect when using DHCP. NetworkManager gets to the second green dot, and then after a short while I am given a message that the connection was disconnected.
Configuring the interface manually, not using DHCP, allows the connection to complete. However, the internet is very slow. There is a 15-30 sec delay before website loading actually commences, and then another delay each time an ad must be fetched from another server.How can I fix this delay? I know I have encountered it in earlier versions of Ubuntu, but I can't remember how I fixed it.About the rdesktop problem, if anyone is able to help [maybe I should post another thread?], the cursor color (the color of the pointer) is inverted---where it should be white it is black, and where it should be black it is white. I use rdesktop a lot to connect to my terminal server in my basement. Any idea how to fix it?
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Mar 4, 2011
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Sep 30, 2010
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Mar 23, 2010
Like the title, that is my problem. I'm using cable modem with 3mbps. It is Linksys Docsis, wired networking. When I download a file using ubuntu 9.10, my latency time (ping time) sky rocketed to 2000ms average, while in XP none of this happens; I tried to download the same file from the same website. In ubuntu 9.10 my network setup will be, well... nothing. I'm using DHCP automatic detection. Same thing in XP.
I don't want to go back and forward using XP for the internet. Funny thing though, none of this happens while I first started ubuntu 9.10. I didn't configure anything with networking. It is the way it is from the beginning. The only thing I tried was ubuntuone. But that like months ago, and the problem I have with slow internet connection only appear this March.
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Jul 5, 2010
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Dec 12, 2010
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Jan 29, 2011
I recently installed Kubuntu 10.10 on my machine, and I configured the PPTP VPN connection through which I connect to the internet. I can successfully connect, but it works really slowly. Slower than it does on Windows 7 on the same computer, with the same settings for the PPTP dialer. In about 20 minutes after I connect, the connection fails and even the modem restarts itself. I tried setting the MTU for the pptp connection to 1400 (I checked, and 1372 is the maximum value before the packets start to fragment + 28 bytes for the IP/ICMP headers), but nothing seems to help.
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Jan 7, 2010
Got a laptop with a RTL8187B wlan card, installed opensuse 11.2 on a 50gb partition. Card was detected straight away but only connects when I enter ip addresses manually, DHCP don't work.
When it is connected it always stays at a speed of 1mb/s and it cannot ping my router or anything else.
Me kernel is 2.6.31.8-0.1-desktop
Searched around the forums but no love, tried compat-wireless but it started crying about dependencies. Modprobed it too..
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May 19, 2010
I upgraded to ubuntu 10.04 lts yesterday. The upgrade went smoothly. but now I have a very slow internet connection. It is as if I am on a dial up when I have a broadband speed of 20 MB. What can I do to fix or perhaps roll-back the installation to the previous proper working state.
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Jan 9, 2011
I am running Ubuntu 10.10, and I would like to use my computer to share the internet connection from an ethernet port. For example, I would like to set up my computer as a wireless access point so I can create a network that other computers can connect to for internet.
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Jun 19, 2010
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The problem is, I've signed up with them on an annual package and made advance payment. Now they keep telling me there is nothing wrong with their internet provision and I cannot ask for my money. That is why I need some app that will sit in my PC and monitor the connection o24/7 and give me a report of how many times the connection kept going down, average speeds, etc.., which I can give to them.
I've tried installing Nagios, MRTG and others from synaptic, but don't even know how to start them up - they're not even appearing in the main menu. I tried to load MRTG from the terminal but it tells me:
Code:
ERROR: Mrtg will most likely not work properly when the environment variable LANG is set to UTF-8. Please run mrtg in an environment where this is not the case. Try the following command to start:
env LANG=C /usr/bin/mrtg
I even tried what it tells me, but no luck and I don't even know if I'm on the right track by using Nagios or MRTG?
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May 17, 2010
I have a laptop running Ubuntu 10.04 with wireless working out of the box. I've been using it for the past few weeks because my iMac G5 has really slowed down with OS X. Today I installed 10.04 on the iMac G5 as well. However, wireless isn't working out of the box as it asks me to install the Broadcom wireless driver. The problem is, without this wireless driver, I can't install the drivers.
I am wondering if I can connect the laptop, which has wireless, to the iMac with a spare ethernet cable to give the iMac internet so it can download the driver.I'd rather not have to unplug it and move it downstairs to the router just to install the drivers.
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May 28, 2011
my installed windows makes full use of the 32mbit connection. in fedora i get between 10kbit and 100kbit.this is very annoying especially while browsing the net or using the package manager to do updates or download new software. what could be the problem and how could i solve it?
i very much like the look and feel of fedora 15, but this just makes it unusable on a daily basis.
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Mar 7, 2010
So far i have tried ubuntu. seems great however i've had trouble with internet connection and soundcard problems. (slow internet connection and poor sound quality. I was thinking of trying kubuntu. Do you think i'll have the same problems?
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Jan 7, 2010
I can connect to the internet fine, but it refuses to go any quicker than 1mbit. Below is my recent result from [URL]
My iwconfig shows...
Code:
lo no wireless extensions.
eth0 no wireless extensions.
wmaster0 no wireless extensions.
[code]....
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Mar 19, 2011
I have Fedora 14 installed on my s/m with the default gnome desktop environment. Now, I want to install some KDE applications which I found to be very useful. I want to install KDE from fedora 14 DVD as my internet connection is very slow. It was a failure when I tried pointing the yum.repos.d/fedora.repo file to DVD to install using yum. Should I create a repository like what we do in RHEL to configure yum server(How to do it in fedora ???) Or is there any other method to install KDE repository on my system.
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May 17, 2011
I have recently moved countries and have finally got my internet connected today after a lengthy wait. I have a pretty fast connection - it's a fibre connection at approx 100Mbps Between my onu (modem) & computer (Lenovo SL510) I have a cisco wrt120N wireless router. I'm using Opensuse 11.3 (also dual boot with Win7)
My problem is . . . When I enter url in firefox (4) I get the message "looking up www. . ." for approx 5 to 15 seconds before anything starts to load. I also have the same behaviour in konqueror, firefox and yast software manager.
If I use Google Chrome the pages load instantly. Even never before visited pages.
A typical webpage such as Stuff.co.nz - Latest New Zealand News & World News, Sports News & NZ Weather Forecasts takes approx 20 to thirty secs to load in firefox and 3 seconds in Chrome. I can see the same behaviour always whether Chrome used first or firefox used first - so cache does not appear to be the issue.
If I boot into Win7 - websites load instantly there also.
I have updated to the latest wireless drivers for my system - but the behaviour is also evident if I attach a lan cable.
Here is a little info
Code:
/sbin/ifconfig
eth0 Link encap:Ethernet HWaddr 60:EB:69:AE:C6:28
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
[Code].....
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Sep 21, 2010
I have a machine (lets called it machine 1) with two networks card, eth0 and eth1. Both have static IPs. Once in a while the machine refuses to give access to the Internet via Firefox (eth0 is the route to router). Other machines on the network have no problems accessing the Internet. Eventually the machine would just magically start working again, but this time it just seems to have stayed broken. I've done some simple diagnostics and found:
a) I have another machine running Apache with a Wiki on our network - [URL]. Machine 1 is unable to connect to this Wiki. I get 'the connection has timed out'. I can ping 192.168.1.73 and it responds in the usual fashion.
b) If I try to ping www.google.com it times out with: ping: unknown host www.google.com. I can ping google using its IP address.
c) On machine 1 I have tried traceroute on both www.google.com and its IP and I just get:
1 * * *
2 * * *
And so on until hop 30. Doing this on any other machine on the network works. So while it seems I can ping internally in our network and outside, but when it attempts anything traceroute or URL related it does not work.
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May 12, 2010
I have 17 system (sys1,sys2,sys3.....sys17) in my office, and i am willing to setup a dedicated system to act as a firewall for that i have selected sys1 with two NIC(eth0 for local network and eth1 for internet) and i have configured to access internet in my office for that i have opened a wellknown port 80.but my clients are not accessing the internet..
and please check my sample IP configuration !!!
interface : eth1 (ISP IP)just for example
IP :192.168.0.2
gateway:192.168.0.1
dns:202.56.230.5
dns:202.56.230.6
Interface : eth0 (my local lan )
192.168.1.1
255.255.255.0
IP address of xp clients ranges form 192.168.1.2 to 192.168.1.16 with default 255.255.255.0
my question is that which gateway address and dns i have to give to my clients for accessing internet ?...
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Jun 19, 2011
I have an adsl modem acting as a bridge to my router my setup was working well for more than year now , but then the internet went slow . I set the modem back to PPPoE the problem was with the DNS server of the ISP so using ifup i set the dns t 8.8.8.8 (google) the connection is back , but when i set the modem back as a bridge slow internet does the router know that my dns is 8.8.8.8 or i should set the dns on the router ? I can't see an option to set the dns on the router ( i just enter my username and password from the isp to use PPPoE mode ) by the way i called the isp support they kept telling me to restart , i told them i did but i never restarted my pc . I'm sure if i tell them i'm running linux they will blame the os !
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