I work in IT, but networking is my weakest area.I'm getting very slow DNS lookups (60+ seconds with lots of page timeouts)in Firefox and Chromium on my Kubuntu laptop. Windows clients (xp and 7) work fine.
View 7 RepliesI'm running Ubuntu 11.04 and I'm really new to linux. My problem is that whenever I try to browse a site I notice the website loads very slowly because it takes a long time to do lookups. I installed Ubuntu with an onboard NIC and later switched to a PCI NIC (Dlink DGE-530T). Although I disabled the onboard NIC in the BIOS, it doesn't help. Could this conflict in configuration be a problem? My download rates are fine, its just lookups that take really long ( upto ~ 10 seconds). I know the PCI network card is fine because when I jump to Windows 7, lookups are normal again (~ 300ms). At first I thought about installing the sk98lin drivers for the PCI NIC but I saw a couple of places where people have mentioned that the skge driver that comes along with the kernel is better.
I have tried a system wide as well as Firefox disable of IPv6. Here is my /etc/udev/rules.d/70-persistent-net.rules
Code:
# PCI device 0x1186:0x4b01 (skge)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:24:01:14:eb:39", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"
# PCI device 0x10de:0x0373 (forcedeth)
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="00:1e:8c:3e:19:ed", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth1"
The interface I want to use according to the listing above is the one with the MAC - 00:24:01:14:eb:39.
I tried removing one of the entries in the file above and rebooting but it still didn't work. Here is a look at my /etc/network/interfaces
Code:
auto lo
iface lo inet loopback
# The primary network interface
auto eth0
iface eth0 inet static
address 192.168.1.10
gateway 192.168.1.1
netmask 255.255.255.0
network 192.168.1.0
broadcast 192.168.1.255
I had a dual install of Windows and Ubuntu working for a good week, then I reinstalled Ubuntu, completely wiping the machine. My connection is greatly reduced--updates take hours to install, but internet surfs okay.
Code:
mieum@mieum-1000HE:~$ sudo ifconfig eth0
eth0 Link encap:Ethernet HWaddr 00:24:8c:29:5e:4b
inet addr:59.17.55.227 Bcast:59.17.55.255 Mask:255.255.255.224
inet6 addr: fe80::224:8cff:fe29:5e4b/64 Scope:Link
[code]....
After updating to kubuntu 11.04 natty, I have a problem with my internet-connection. The problem happens when I use VoIP-Software like Skype or Twinkle and also when using ktorrent.
When using the mentioned software, after 30-90 seconds the internet gets very slow. In f.e. skype, I can hear the one I phoned very badly.
I use kubuntu on a desktop-PC with a Linksys USB-Wlan-Stick. Detailed information is below.
Code:
uname -a
Linux pr1-desktop 2.6.38-8-generic #42-Ubuntu SMP Mon Apr 11 03:31:24 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux
[Code]....
p, li { white-space: pre-wrap; } Laptop connects to a (wired) ethernet port on a DLINK DIR-625 wireless router using dhcp. All works perfectly.
Using the same laptop connecting to the same wireless router, but using the wireless adapter and dhcp instead of wired ethernet, I can ping IP addresses on the LAN and also WAN IP's to/from anywhere on the net. I can perform reverse name resolutions (ip to host name), but not forward lookups (host names to ip addresses). I can use the DNS server obtained from dhcp or specify, by ip address, a DNS server to perform the lookups. This makes no difference.
Web pages (LAN server pages or from the internet) are not accessible by site address name or by ip address specifically.
Kubuntu 11.01
$ uname -r
2.6.38-10-generic
$ iwconfig
[Code].....
We have bind 9.3 running on CentOS 5.2. We are able to do reverse lookups for the public IP's but not able to resolve to the private IP's on our network.
View 1 Replies View RelatedI am dual booting natty and linux mint debian edition. I have noticed in LMDE compiz is far, far, far, far smoother. In natty scrolling, resizing, and animations are all noticeably laggier. In LMDE I can use the normal resize with no problem, in natty its so laggy I need to use rectangle or stretch. Animations are also glitchy (fade animations have white flicker) In lmde there are no visual hiccups.
I am using the same driver and kernel in LMDE, the major difference is LMDE has a much older compiz (0.8.4, before the compiz++ rewrite I believe.) Does anyone know why the newer compiz in natty is so much slower? Does anyone else expereince this? my video card is an hd2600 using the cat 11.4 driver, but I experience these same issues with the oss driver.
Since my upgrade to 11.04, ubuntu has been running real slow. When I click on the firefox icon on the side bar, it literally takes over 3 seconds to start opening up. And the same thing goes for folders. Is there something I need to tweak to fix this? And my computer is pretty fast on its own, vista runs very fast on it if that says something.
View 1 Replies View RelatedI have two versions of Natty that I'm running on my EeePC 900. Both are clean installs. As they're both installed on removable flash drives, I expect a certain degree of sluggishness. One installation is the full version with Unity. It boots in about 25 seconds or so, which is slower than Lucid on the same machine, but not too bad.
The other installation was a command-line install with Openbox and GDM for logging in. You'd think this would be quicker, but it's taking a full minute to boot. When it gets to the GDM login screen, I can't see the mouse pointer. If I move the mouse into the lower right-hand corner, I can see the invisible pointer hover over the shutdown button and then I can select it. Alternatively, if I press return (to select my login) and then move the mouse vigorously, a pointer will eventually appear, but it's a large X and not the standard pointer.
I accepted the latest Natty update about which I was notified a couple of days ago (I don't remember exactly). I don't remember a new kernel being pushed out, but for the record I'm on 2.6.38-8-generic right now. I'm trying to interact with a USB compact flash reader and I'm getting ridiculously low throughput (less than 1 MB per second). Before this latest upgrade, I don't remember this being a problem.
Better yet, does anybody know what might be wrong and what I might be able to do to fix this?
I've seen this issue mentioned before, but it appears their cause was different than mine.Here is a snippet of my dmesg log:
Code:
[ 2.797917] cdrom: Uniform CD-ROM driver Revision: 3.20
[ 2.798077] sr 3:0:0:0: Attached scsi CD-ROM sr0
[ 2.798149] sr 3:0:0:0: Attached scsi generic sg1 type 5[code]....
I'm not exactly sure what that is or why that's causing it to take so long to do.
After several upgrades (from 8.xx) I noticed Gnome terminal took about 4 seconds to open an window and another 4 seconds to give me a prompt. This is excruciating when blasting out CLI in dozens of terminals ssh'd into dozens of machines. Tabs were no different.
Fix was: Comment out anything in ~/.bashrc that references xterm. BOOM less than 1s total to prompt.
If it's faster than I can get my mouse hand back to the keyboard to start blasting CLI, it's good enough
After doing a wubi install of 11.04 onto my hp g56-116a because of it having all 4 primary partitions in use, natty seems to be running abnormally slow Not throughout, but there's major slowdowns when doing something like opening a new browser window or similar task.
Sometimes it will just spontaneously log out. The slowdowns are so bad the mouse cursor will become completely unresponsive/laggy for 20-25 seconds. My laptop has 4GB RAM and an intel celeron t3500 cpu, which zips windows 7 along speedily, but its running this install a lot slower than my old laptop ran in,with 2GB RAM and a slightly slower processor.
I just upgraded to 11.04 from 10.10. I have a Radeon 6450 with 1GB of video RAM which should give me pretty good performance, but I'm only getting a measly 60 fps with the new ATI diver (11.4). I installed like this, making sure I'd removed the open source driver:sh ati-driver-installer-11-4-x86.x86_64.run --buildpkg Ubuntu/nattyThen installed the debs and ran an aticonfig --initial. The module builds and installs fine:tnugent@translocon:~$ fglrxinfo display: :0.0 screen: 0OpenGL vendor string: ATI Technologies Inc.OpenGL renderer string: AMD Radeon HD 6450OpenGL version string: 4.1.10666 Compatibility Profile ContextBut this is not good:
tnugent@translocon:~$ fgl_glxgears
Using GLX_SGIX_pbuffer
274 frames in 5.0 seconds = 54.800 FPS
[code]....
Im trying to learn BIND DNS! (yes im bored) Running Ubuntu Server 10.04 LTS.
What files to edit.
1) I want to add a A record for a machine
2) I want to forward none-discoverable lookups to another DNS server.
I found on google seems a bit harsh for me to understand.
way to get nginx to perform DNS lookups at regular intervals against hostnames that are defined for upstream servers? It seems nginx only performs a DNS lookup once, the first time it starts, and subsequently does not perform any other DNS lookups. This causes problems when the ip addresses of our upstream servers change.
I posted this same question in the nginx forum; however I also posted it here as it seems that not many of the posts there get answered.
[URL]
I have an odd issue with postfix 2.5.5 trying to relay email internally to a range of mail servers and it keeps ignoring the transport map [ ] and instead always doing mx lookups.
Essentially the server is only allowing connections from an internal network and only for certain domains that it will relay to other mail servers.
It has no local delivery and yet every time I get email passed to it, it will check the local network DNS server for MX information or with diable_dns_lookups enabled (as below) the A record for the domain, and try to deliver to that instead of the transport map destination.
Here's the main.cf
# See /usr/share/postfix/main.cf.dist for a commented, more complete version
smtpd_banner = $myhostname ESMTP $mail_name (Debian/GNU)
biff = no
disable_dns_lookups = yes
# appending .domain is the MUA's job.
[Code]....
My wireless seems to be fast for a good 30secs then bang takes good while to load the next page almost as if it's disconnecting and then reconnecting/scanning reconnecting. Why cant it stay connected. I have WAP PSK security here is my network setting please let me know if I should change any of them:(side not is there a way to fix this problem occuring so frequently it says on the wiki that it should only occur once in a whilce https:[url].....
View 2 Replies View RelatedI have server ubuntu natty 11.04-64 bit, Yesterday, I Think I had been hacked by someone..
How to create report to see log for brute force attack?
I have some port opened 80, 53(bind9), SSH(22), Port Squid & some port java
I am Also worried that Guy is create other username for login
How to check that?
Is it possible to recovery HISTORY at ubuntu..?
Removed the thread; figured out that this does work in the zones config:
<Record you want redirected to another nameserver><tab>IN<tab>NS<tab><name server to redirect the query to>
How do you set wireless speed in natty? I've tried
Code:
sudo iwconfig wlan0 rate 54M
but nothing happens. I've tried this with wireless enabled and disabled (using network-manager), with and without the module loaded (ath9k) and using the solution provided in some forums (adding the command in /etc/rc.local and in a script in /etc/network/if-up.d) but to no avail... link speed always shows up as 65M.
I use an Atheros AR922X wireless card in my router/access point and everything was working fine under maverick. Now when I try and start hostapd I get this:
Code:
root@puffin:~# hostapd -d /etc/hostapd/hostapd.conf
Configuration file: /etc/hostapd/hostapd.conf
ctrl_inerface_group=0[code]....
I just updated my work laptop to Natty: perfect. My home server: perfect. My oldish home laptop: no more wireless. [I use wicd instead of Knetwork (or whatever it's called) because I want a permanent connection no matter the user]
I have a D-Link DWA-645. I get the whole stage: connecting, authenticating, etc... and bad password at the end. The password is correct (hasn't changed during upgrade). I also tried disabling WPA and it still won't connect. That's wlan2.
I also tried with an older PCMCIA card that _used_ to work on ubuntu 9, but stopped on version 10: a D-LinkDWL-G650. It doesn't even show up as wlan0 as it used to. I also tried with a USB-wifi DWL-G122 which has always worked on every version of Ubuntu [I don't normally use it because it's not practical on a laptop]. I see it as wlan1, but same thing: won't connect. Note that like with wlan2 I can scan for networks and see several around. For instance:
Code:
$ iwconfig
IEEE 802.11bg
ESSID: off/any
Mode: managed
Access point: not associated
Tx power: 20 dBm
Retry long limit: 7
[Code]...
[Edit]
Some more info: the access point works fine, I can connect with another device. The driver in use by Ubuntu is ath9k. Using KnetworkManager instead of wicd doesn't change anything.
I want to try and get apache and php working on Natty. I have got apache displaying an index page but when i try to show a php file firefox just asks me if I want to save the file and doesn't display the file in the browser.I installed using some info from websites to install al LAMP Server which seems to have finished ok.I have tried using php from the command line to see what happens and it seems the html is being generated ok.
View 1 Replies View RelatedI have spent the last two weekends trying to get Vista and Ubuntu(natty) to work together.From Ubuntu:
- I have disabled ufw
- setup a shared directory at /mnt/public (Permissions on public are 777)
- Ubuntu can access Vista shares.
- From the GUI, the "Network Servers" directory contains a "Windows Network" directory, but the Windows Network is empty.
- I can ping the Vista machine
From Vista:
- Nothing is visible. The ubuntu PC itself is not listed in the "Network" folder or map.
- I have disabled all firewalls (including the router)
- I can ping the ubuntu machine by IP address but cannot access it by IP address through
- "Run" - I enter \192.168.1.50, then get the logon pop-up. I enter the ubuntu creds, then receive a "Windows cannot connect to \192.168.1.50..." error message.
- "Command Prompt" ftp (or sftp) - I get connection refused.
- via "Web Browser" - I get the following message: "It works! This is the default web page for this server. The web server software is running but no content has been added, yet." The problem is that it doesn't work.
Everything I have googled up so far has been problems connecting in the opposite direction. I am trying to get to the Ubuntu machine. Although I checked all the smb.conf, inetd.conf and a few other files that I've seen mentioned, I cannot get the Vista machine to connect to the ubuntu machine.
i've installed ubuntu 11.04 on a friends Asus Eee pc 1005HA netbook. after the installation i tried to connect to the router using wireless, and when i enter the key, it fails to connect, so i tried using an Ethernet cable to connect but that doesn't work either,the network devices on the computer are:
Atheros AR8132 PCI-e fast ethernet controller
Atheros AR 9285 wireless network adapter
It lists the wireless device and the solutions to the problem, however, the solutions seem to be for Ubuntu 10.04 and also 10.10, and im not sure if it will work for 11.04 so far i have been unable to find out anything on the forums about the ethernet
I have an old ibm thinkpad R40. I did a fresh install of natty. Cannot get wireless or wired to work. I just want the wireless to work first if possible. So I have no Internet access. Can't upgrade etc. I am a noob and need to be hand held and walked through process.
View 9 Replies View RelatedWhere can I find details of how to set up a Huawei E173 on Natty? The network interface's status icon shows first "waiting for authorization" then it goes to "not connected" The modem hardware is showing up when it is plugged in:
Code:
$ ls -la /dev/ttyUSB*
crw-rw---- 1 root dialout 188, 0 2011-04-28 19:18 /dev/ttyUSB0
crw-rw---- 1 root dialout 188, 1 2011-04-28 19:18 /dev/ttyUSB1
crw-rw---- 1 root dialout 188, 2 20$ lsusb|grep Huawei
Bus 001 Device 013: ID 12d1:1436 Huawei Technologies Co., Ltd. 11-04-28 19:18 /dev/ttyUSB2 What needs to be done to get it working?
Reading recent posts, it seems that 11.04 has seriously screwed wifi.
I have an Advent QRC430 laptop which worked perfectly until I upgraded to Natty. Now wifi is broken. The wifi driver is rt73usb.
When I run lspci in terminal, no wifi card is listed. Running rfkill shows wifi hard blocked, but the switch on laptop makes no difference.
I've installed and run Hardware Lister - this shows wireless interface "has been disabled"
After being prompted by UpdateManager, I upgraded my Compaq Presario CQ71 from 10.10 to 11.04 yesterday. Most things seem fine, except that my wifi is disabled (it was working fine in 10.10).
Here are some details:
Code:
Code: