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• moving my site, IP change worries...

  - by Sherif Buzz

  Hi all, my site has outgrown the shared hosting account it's on and i've setup a VPS that i'll be moving to soon. I cannot keep the same IP between my new account and the old one and I'm a bit at loss as to how to minimize user downtime while the new IP is reflected in all DNS caches. Note I cannot have the site running on both accounts at the same time as it's a dating site and this would cause data inconsistency. Here's what i am planning to do : Put up a 'under maintenance' page on old host Get the site up and running on new host, and update domain to point to new host. Hope downtime isn't too long. Would it be a good idea to have a link on the page in (1) that opens the new site but using it's ip ? Or even redirect all requests at the old host, to the new one (again by ip) ? Any advice much appreciated.

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• No remote access to PostgreSQL db

  - by gattol

  i'm stuck in connecting to a PostresSQL database from remote host. The server is accepting incoming connections on port 5432 and i've configured pg_hba.conf like this: local all all md5 host all all 0.0.0.0/0 md5 and the postgresql.conf like this: listen_addresses = '*' port = 5432 max_connections = 100 I don't have any problem accessing from local but when i try to connect via psql with something like this: psql -U myuser -h hostname db_name I get this error: psql: FATAL: no pg_hba.conf entry for host "87.zz.yy.xxx", user "myuser", database "db_name", SSL off I also tried to put the host 87.zz.yy.xxx in the pg_hba.conf file without success.

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• I screwed up, exit in .bashrc

  - by camel_space

  I put "exit" in my .bashrc file. I don't have physical access to the machine so to connect to it I use ssh. I don't have root privileges. Every time I connect to the server, the connection automatically closes. So far, I've tried: Overwriting .bashrc with scp and sftp. The connection closes before I can do anything. Using a few different GUI programs to access ssh (connection closes) Overwriting the file with ftp. (can't use ftp) From my home computer $ ssh host "bash --noprofile --norc" (connection closes) $ ssh host "mv .bashrc bashrc_temp" (connection closes) $ ssh host "rm .bashrc" (same thing) $ ssh host -t (connection closes) Is there anything I can do to disable .bashrc or maybe overwrite the file before .bashrc is sourced?

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• PHP unable to allocate memory.

  - by AlReece45

  On my way to the office this morning, every website on our shared VPS started giving the same error (several times, not the typical memory_limit error which is fatal): Warning: Unknown: Unable to allocate memory for pool. in Unknown on line 0 The shared server is a 64-bit OpenVZ container running cPanel. There are only ~6 VPSes on the host-- this is the largest one at only 4GB. The host itself has 24GB RAM. As the below graphs show, the memory usage on the host and VPS are both rather low. CPU Usage/Disk/Host all seem to be normal. RlimitMem was set to 583653034, yet the memory usage is about the same as it usually is. Apache 2.2, PHP 5.2 (mod_php) Restarting Apache has corrected the problem for now. However, I'd like to prevent it from happening again and I'm not sure what was limiting the memory. RlimitMem was set to 583653034, yet the memory usage is about the same as it usually is. There's seems to be plenty of memory: what caused this error? VPS Memory Usage Host Memory Usage APC Information apc.ttl=0 apc.shm_size=0 apc.mmap_file_mask=(blank) 1 Segment(s) with 32.0 MBytes (mmap memory, pthread mutex locking)

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• Capture virtual machine traffic in Fiddler

  - by HtS

  I'm running Ubuntu in a virtual machine (host machine is Windows 7). Is it possible to use Fiddler in the host machine to capture the traffic from the virtual machine? Seeing as the virtual machine's network must be passing through the host computers NIC, can Fiddler capture the packets? (I don't know of any free alternative to Fiddler for Linux, except Tamper Data, but I need a bit more control). Thanks.

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• Lan DNS not working after reinstall of Ubuntu 13.10

  - by DrorCohen

  I upgrade my Ubuntu desktop to 13.10. When I say upgrade I mean installed on a new partition from scratch (old partition is available if To the problem: I'm trying to ping a host (Drobo-FS server) by it's host name. I get "Unknown Host". However pinging from another computer on the same lan - works fine (a laptop with 12.04 lts). for that matter every ping from the 13.10 to the local lan by hostname fails, ping with ip works. I don't have a local DNS server but somehow all the other computers in the network find each other by host name - only this new one fails... help appreciated...

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• Suggestion regarding pointing domains to a dedicated server.

  - by Bizz

  I recently got a dedicated server and I am still at a learning stage. So please bear with me. I wanted to have 3 domains pointed to my server, but initially I asked them the process to point me one and they responded with: Hello, I can set that rDNS for you. Please make sure the domain is pointed to our name servers at godaddy. They are: ns1.xxxxx.net ns2.xxxxx.net After this is done, please allow up to 24 hours for global propagation. Alternatively, we can host your DNS for you if you prefer. What is the domain you would like xx.xxx.xx.xx to resolve to? I then asked him to point one of my domains. They responded, Did you want us to host your dns for that domain or just an rDNS record? They also said, Hosting your DNS is a free service here. We can only do 1 domain per IP. IF you would like to purchase additional IPs, they are $1/IP per month. I personally dont want to host DNS myself. Neither mail server. I have a single IP so far. It will then start to get expensive if I want to host 25 from these guys. I am still in the trial period. Does this seem reasonable as far as pricing goes? If I want to have some one host DNS and mail server, this is getting super expensive. Email hosting from rackspace starts at $2 per mail address, but from then on, its the same if you want added features such as archiving etc; What would you suggest I do if I am on a shoe string budget but I also want to avoid hassle of doing it myself and I only have 3 domains so far and I would need few mail addresses for each of them.

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• Wildcard subdomain setup ... want to change host IP throws off client A records... what to do...

  - by Joe

  Here is the current set up (in a nutshell). The site is set up with a wildcard subdomain, so *.website.com is accessible. Clients can then domain map their own domains with an A record to the server IP address and it will translate the to appropriate *.website.com with re directions and env variables in htaccess. Everything is working perfect... but now comes the problem. The site has grown larger than a single DQC Xeon server can handle at peak times. Looking at cloud options seems tempting, but clients are pointing their domains to a single IP address with the A record (our server). Now, this was probably bad planing from the start, but the question is, if this was to be done today, how would we set it up so that clients use a CNAME perhaps to point their domains to our server rather than an A record. And, if that is not possible for the root domain, how can we then use multiple IP addresses on our side to translate the incoming http request? Complex enough? Hope I've explained it well!

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• Windows Server 2003 Is there a limit on number of TCP connections per process?

  - by aceinthehole

  We are running into issues with BizTalk host instance intermittently going down. One of the things that we are worried about is the number of FTP connections a single host instance is making which could easily reach into the hundreds perhaps sometimes thousands, depending on traffic. My question is Windows Server 2003 Is there a limit on number of TCP connections per process? If so would putting each application in it's own host instance potentially solve the problem.

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• Postfix smarthost with diffent relayhosts and sender dependant authentication

  - by mattinsalto

  I've setup postfix as smarthost with different relayhosts and sender dependant authentication. Everything works ok, but I have a performance question. Is it better to send all the email corresponding to a domain through only one account? I mean, now I'm sending each message authenticating to the relay host with the sender credentials. Example: If I have 5 email accounts and I send 10 simultaneous messages from each account, How many times is postfix login to the relay host if I have sender dependant authentication? 5 times? once for each sender 50 times? once for each message If I send all the messages corresponding to one realy host through one account, how many times does postfix login to the relay host? only once? Thanks in advance.

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• What is the best way to compare vhost traffic?

  - by Bob Flemming

  Recently one of my servers has been subjected to malicious ddos attacks. I have about 12 websites hosted on the server which uses name based v-hosting. I am trying to identify which virtual host(s) are getting bombarded with traffic. I have used tools such as iftop which is good for identifying hosts which are consuming lots of bandwidth, and also apachetop which is useful for identifying which resources are being requested on a single v-host. What I really need is a tool which allows me to see the amount of traffic being received by each v-host in real time so I can easily see which v-host is being targeted. Does such a tool exist?

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• Capture virtual machine traffic in Fiddler

  - by HtS

  I'm running Ubuntu in a virtual machine (host machine is Windows 7). Is it possible to use Fiddler in the host machine to capture the traffic from the virtual machine? Seeing as the virtual machine's network must be passing through the host computers NIC, can Fiddler capture the packets? (I don't know of any free alternative to Fiddler for Linux, except Tamper Data, but I need a bit more control). Thanks.

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• why is this happening?-"dhcpcd will not work correctly unless run as root"

  - by user330317

  i have installed archlinux and gnome on virtualbox. had no problem connecting to internet but now after installing gnome and rebooting there is no internet connection after following instructions from archwiki,i have tried . but i cant figure out the problem please help. host-63drhd% sudo netctl status enp0s3 ? [email protected] - Networking for netctl profile enp0s3 Loaded: loaded (/usr/lib/systemd/system/[email protected]; static) Active: inactive (dead) Docs: man:netctl.profile(5) host-63drhd% sudo netctl enable enp0s3 Profile 'enp0s3' does not exist or is not readable host-63drhd% sudo dhcpcd dhcpcd[1486]: sending commands to master dhcpcd process host-63drhd% dhcpcd dhcpcd[1543]: control_open: Permission denied dhcpcd[1543]: dhcpcd will not work correctly unless run as root dhcpcd[1543]: open `/run/dhcpcd.pid': Permission denied dhcpcd[1543]: control_start: Permission denied dhcpcd[1543]: version 6.3.2 starting dhcpcd[1543]: enp0s3: if_init: Permission denied dhcpcd[1543]: enp0s8: if_init: Permission denied dhcpcd[1543]: no valid interfaces found dhcpcd[1543]: no interfaces have a carrier dhcpcd[1543]: forked to background, child pid 1544

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• Pinging 192.168.1.4 is looking to 192.168.1.2?

  - by BVernon

  When I run the command "ping 192.168.1.4" I am get the following results: Pinging 192.168.1.4 with 32 bytes of data: Reply from 192.168.1.2: Destination host unreachable. Reply from 192.168.1.2: Destination host unreachable. Reply from 192.168.1.2: Destination host unreachable. Reply from 192.168.1.2: Destination host unreachable. Can anyone help me understand why in the world it's telling me that 192.168.1.2 is unreachable when that's not even the ip address I typed in? I'm very confused. Also in case it's relevant, I'm on a workgroup.

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• VirtualBox bridged network not working as expected

  - by iby chenko

  I am having hard time getting Bridged network to work with VirtualBox. Idea is to have host as well as one or more guests on same LAN. Using NAT (default) I do get access to internet and any node on the LAN when working from one of the VM guests. However, no LAN node including host can access (or ping) guest in VM. I need to be able to use any guest as if it was a physical computer on the network (need to be accessed by any machine on LAN). According to my understanding of the VirtualBox documentation, this should be Bridged mode. I think I set it correctly, well, actually there is not much to it: 1. select Bridged mode in VM network setup 2. select physical NIC of the host to connect bridge to 3. start VM When I do this, each VM does get new IP address that corresponds to LAN settings : 192.168.1.100 192.168.1.102 192.168.1.103 etc. where host is 192.168.1.80 / 255.255.255.0 (IP addresses above 100 are served by DHCP server). This seem to be correct based on what I know about ethernet. From VM I can ping other nodes like 192.168.1.50 etc. and I still get ethernet access. So far so good... But I STILL cannot ping any of the other VMs (running ones of course). I cannot ping them from other VMs, from host or from other nodes on the LAN. Aside from fact that IP addresses handed to guests are now local, this still acts same as NAT. What is going on? What am I missing? Regards, I

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• Run totally silent rsync?

  - by jackr

  I have a cronjob that runs hourly, and is totally silent unless something goes wrong. Well ... almost ... A part of the job is rsync --del -Cacqrz public/. [email protected]:/target/path This always prints "logged in". How can I make it stop? (Short of 'grep -v' ;-) I don't get the "logged in" message if I do things like ssh [email protected] ls The transport is, of course, ssh (using keys). Source host is either OSX or Ubuntu (tried both, same behavior). Target host is Linux of some flavor.

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• How to enable a Web portal-based enterprise platform on different domains and hosts without customization

  - by S.Jalali

  I work at Coscend, a cloud and communications software product company. We have built a Web portal-based collaboration platform that we would like to host on five different Windows- and Linux-based servers in different hosting environments that run Web servers. Each of these Windows and Linux servers have a different host name and domain name (and IP address). Out team would appreciate your guidance on: (1) Is there a way to implement this Web portal-based platform on these Linux servers without customizing the host name, domain name and IP address for each individual instance? (2) Is there a way to create some variables using JavaScript for host name and domain name and call them from the different implementations? (3) Can these JavaScript modules be made portable and re-usable object modules for different environments and instances? The portal is written in JavaScript that is embedded in HTML5 and padded with CSS3. Other technologies include Flash, Flex. Databases used are PostgreSQL and MySQL.

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• Sound in Ubuntu 10.04 guest VM in a Ubuntu 8.04 host is "slow". How to fix it?

  - by Somebody still uses you MS-DOS

  When I try to execute sound in Rythmbox, it's "slow". Not only Rythmbox, but system sounds are strange too (they look like they are "slow"). I've tried a workaround but without success. Anyone knows what this could be? I'm using Virtual Box 3.2.4 r62467.

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• ServerAlias override server name?

  - by GusDeCooL

  I tried to setting up virtual host with apache2 on my ubuntu server. my serverName is not working, it show wrong document, but the server alias is showing right document. How is that happen? Here is my virtual host config: <VirtualHost *:80> ServerAdmin [email protected] ServerName bungamata.web.id ServerAlias www.bungamata.web.id DocumentRoot /home/gusdecool/host/bungamata.web.id <Directory /> Options FollowSymLinks AllowOverride None </Directory> <Directory /home/gusdecool/host/bungamata.web.id> Options Indexes FollowSymLinks MultiViews AllowOverride None Order allow,deny allow from all </Directory> ScriptAlias /cgi-bin/ /usr/lib/cgi-bin/ <Directory "/usr/lib/cgi-bin"> AllowOverride None Options +ExecCGI -MultiViews +SymLinksIfOwnerMatch Order allow,deny Allow from all </Directory> ErrorLog ${APACHE_LOG_DIR}/error.log # Possible values include: debug, info, notice, warn, error, crit, # alert, emerg. LogLevel warn CustomLog ${APACHE_LOG_DIR}/access.log combined </VirtualHost> if you access http://bungamata.web.id it shows wrong document, but if you open http://www.bungamata.web.id it open the rights document. The right document should have content "testing gan"

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• Bridged VM guest does not get IPv6 prefix

  - by Arne

  I have a similar problem and setup as described in IPv6 does not work over bridge. My host get a IPv6 prefix but the guest VM only gets a local fe80-prefix. Using tcpdump I can see that solicit messages are going out from the guest but the host (ubuntu-server) doesn't seem to respond: arne@ubuntu-server:/var/log$ sudo tcpdump -i br0 host fe80::5054:00ff:fe4d:9ae0 tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on br0, link-type EN10MB (Ethernet), capture size 65535 bytes 14:31:15.314419 IP6 fe80::5054:ff:fe4d:9ae0 > ff02::16: HBH ICMP6, multicast listener report v2, 4 group record(s), length 88 14:31:15.322337 IP6 fe80::5054:ff:fe4d:9ae0 > ff02::16: HBH ICMP6, multicast listener report v2, 1 group record(s), length 28 14:31:15.502374 IP6 fe80::5054:ff:fe4d:9ae0 > ff02::16: HBH ICMP6, multicast listener report v2, 1 group record(s), length 28 14:31:15.743894 IP6 fe80::5054:ff:fe4d:9ae0.dhcpv6-client > ff02::1:2.dhcpv6-server: dhcp6 solicit 14:31:15.802389 IP6 fe80::5054:ff:fe4d:9ae0 > ff02::16: HBH ICMP6, multicast listener report v2, 4 group record(s), length 88 14:31:17.906580 IP6 fe80::5054:ff:fe4d:9ae0.dhcpv6-client > ff02::1:2.dhcpv6-server: dhcp6 solicit I had a firewall issue which I fixed by adding the following (copied from similar IPv4 before.rules settings) to /etc/ufw/before6.rules at the end before the commit statement: # allow bridging (for KVM) -I FORWARD -m physdev --physdev-is-bridged -j ACCEPT I am running the host on a Ubuntu 14.04 server so I guess I could have used dnsmasq but I didn't find any howto for it so I used radvd (which had to be installed) with the following configuration in /etc/radvd.conf: interface br0 { AdvSendAdvert on; AdvLinkMTU 1480; prefix 2a01:79d:xxx::/64 { AdvOnLink on; AdvAutonomous on; }; }; This didn't help though so I guess I must have configured it wrong? Any help appreciated. Br, Arne PS: I wish the Ubuntu documentation included how to configure virtualization to work with IPv6

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• VGA monitor won't detect on NVIDIA Quadro NVS 4200M

  - by tanmayk

  I am on a Dell Latitude E6420 and just installed 12.04. When I plug in my external monitor's VGA cable, the laptop doesn't detect any new monitor. Here's the output of my lspci: 00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09) 00:01.0 PCI bridge: Intel Corporation Xeon E3-1200/2nd Generation Core Processor Family PCI Express Root Port (rev 09) 00:16.0 Communication controller: Intel Corporation 6 Series/C200 Series Chipset Family MEI Controller #1 (rev 04) 00:16.3 Serial controller: Intel Corporation 6 Series/C200 Series Chipset Family KT Controller (rev 04) 00:19.0 Ethernet controller: Intel Corporation 82579LM Gigabit Network Connection (rev 04) 00:1a.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #2 (rev 04) 00:1b.0 Audio device: Intel Corporation 6 Series/C200 Series Chipset Family High Definition Audio Controller (rev 04) 00:1c.0 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 1 (rev b4) 00:1c.1 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 2 (rev b4) 00:1c.2 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 3 (rev b4) 00:1c.3 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 4 (rev b4) 00:1c.5 PCI bridge: Intel Corporation 6 Series/C200 Series Chipset Family PCI Express Root Port 6 (rev b4) 00:1d.0 USB controller: Intel Corporation 6 Series/C200 Series Chipset Family USB Enhanced Host Controller #1 (rev 04) 00:1f.0 ISA bridge: Intel Corporation QM67 Express Chipset Family LPC Controller (rev 04) 00:1f.2 RAID bus controller: Intel Corporation 82801 Mobile SATA Controller [RAID mode] (rev 04) 00:1f.3 SMBus: Intel Corporation 6 Series/C200 Series Chipset Family SMBus Controller (rev 04) 01:00.0 VGA compatible controller: NVIDIA Corporation GF119 [Quadro NVS 4200M] (rev a1) 01:00.1 Audio device: NVIDIA Corporation HDMI Audio stub (rev a1) 03:00.0 Network controller: Intel Corporation Centrino Advanced-N 6205 (rev 34) 0b:00.0 SD Host controller: O2 Micro, Inc. Device 8221 (rev 05) 0b:00.1 Mass storage controller: O2 Micro, Inc. Device 8231 (rev 03) I tried installing the Quadro NVS 4200M from the nvidia website but got stuck in TTY after the installation finished. Any ideas as to how I can get the external monitor to work? Thanks!

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• Suspending my laptop breaks ethernet over firewire, are there commands which can fix it?

  - by Josh

  As mentioned in this question I am using a firewire cable to provide a private network between my laptop and my desktop, because it makes using the screen sharing program synergy much nicer than using WIFI. However when I leave my office for the day and I suspend my laptop, when I return the next day, the desktop and the laptop cannot communicate over firewire anymore. The firewire0 device still has an IP address. but when I try and ping the desktop I get no route to host I'm using kernel 2.6.35-24-generic #42-Ubuntu SMP x86_64 on Ubuntu 10.10. Is there some way I can remedy this without a reboot? Like, removing some kernel modules and re-inserting them? Here's what I have tried so far and the results: root@token:~# dmesg|tail -n 1 [592525.204024] firewire_core: phy config: card 0, new root=ffc1, gap_count=5 root@token:~# modprobe -r firewire_net firewire_ohci firewire_core root@token:~# modprobe -v firewire_ohci insmod /lib/modules/2.6.35-24-generic/kernel/lib/crc-itu-t.ko insmod /lib/modules/2.6.35-24-generic/kernel/drivers/firewire/firewire-core.ko insmod /lib/modules/2.6.35-24-generic/kernel/drivers/firewire/firewire-ohci.ko root@token:~# dmesg|tail [592525.204024] firewire_core: phy config: card 0, new root=ffc1, gap_count=5 [592563.410868] firewire_ohci: Removed fw-ohci device. [592579.160086] firewire_ohci: Added fw-ohci device 0000:02:00.0, OHCI v1.10, 4 IR + 8 IT contexts, quirks 0x2 [592579.160137] firewire_ohci: isochronous cycle inconsistent [592579.660294] firewire_core: created device fw0: GUID 0000000000000000, S400 [592579.663805] firewire_core: created device fw1: GUID 0017f2fffe89bce6, S400 [592579.663813] firewire_core: phy config: card 0, new root=ffc1, gap_count=5 [592579.700720] firewire_core: phy config: card 0, new root=ffc1, gap_count=5 [592579.700842] firewire_core: refreshed device fw0 [592579.702603] firewire_net: firewire0: IPv4 over FireWire on device 0000000000000000 root@token:~# ping stan.firewire PING stan.firewire (192.168.100.1) 56(84) bytes of data. From token.local (192.168.100.3) icmp_seq=1 Destination Host Unreachable From token.local (192.168.100.3) icmp_seq=2 Destination Host Unreachable From token.local (192.168.100.3) icmp_seq=3 Destination Host Unreachable I also tried removing the modules prior to suspending, and re-inserting after resuming. This did not work either :-(

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• Good Laptop .NET Developer VM Setup

  - by Steve Brouillard

  I was torn between putting this question on this site or SuperUsers. I've tried to do a good bit of searching on this, and while I find plenty of info on why to go with a VM or not, there isn't much practical advise on HOW to best set things up. Here's what I currently HAVE: HP EliteBook 1540, quad-core, 8GB memory, 500GB 7200 RPM HD, eSATA port. Descent machine. Should work just fine. Windows 7 64-bit Host OS. This also acts as my day-to-day basic stuff (email, Word Docs, etc...) OS. VMWare Desktop Windows 7 64-bit Guest OS with all my .NET dev tools, frameworks, etc loaded on it. It's configured to use 2 cores and up to 6GB of memory. I figure that the dev env will need more than email, word, etc... So, this seemed like a good option to me, but I find with the VM running, things tend to slow down all around on both the host and guest OS. Memory and CPU utilization don't seem to be an issue, but I/O does. I tried running the VM on an external eSATA drive, figuring that the extra channel might pick up the slack. Things only got worse (could be my eSATA enclosure). So, for all of that I have basically two questions in one. Has anyone used this sort of setup and are there any gotchas either around the VMWare configuration or anything else I may have missed here that you can point me to? Is there another option that might work better? For example, I've considered trying a lighter weight Host OS and run both of my environments as VMs? I tried this with Server 2008 Hyper-V, but I lose too much laptop functionality going this route, so I never completed setup. I'm not averse to Linux as a host OS, though I'm no Linux expert. If I'm missing any critical info, feel free to ask. Thanks in advance for your help. Steve

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• How do I get a rt2800usb wireless device working?

  - by Jii

  My brand new desktop running 13.04 has endless problems with wireless. Dozens of others are flooding forums with reports of the same problems. It worked fine for a few days, then there were a few days where it started having problems sometimes and working sometimes. Now it never works at all. I have 5+ devices all able to connect without any trouble at all, including iPhone, Android phone, 3DS, multiple game consoles, a laptop running windows 7, and even a second desktop machine running Ubuntu 12.04 sitting right behind the 13.04 machine. All other devices have full wireless bars displayed (strong signals). At any moment, one of the following is happening, and it changes randomly: Trying to connect forever, but never establishing a connection. Wireless icon constantly animating. Finds no wireless networks at all. (There are 12+ in range according to other devices.) Will not try to connect to the network. If I use the icon to connect, it will display "Disconnected" within a few seconds. Will continuously ask for the network password. Typing it in correctly does not help. Wireless is working fine. This happens sometimes. It can work for days at a time, or only 10 mins at a time. Various things that usually do nothing but sometimes fix the problem: Reboot. This has the best chance of helping, but it usually takes 5+ times. Disable/re-enable Wi-Fi using the wireless icon. Disable/re-enable Networking using the wireless icon. Use the icon to try and connect to a network (if found). Use the icon to open Edit Connections and delete my connection info, causing it to be recreated (once it's actually found again). Various things that seem to make no difference: Changing between using Linux headers in grub at bootup, between 3.10.0, 3.9.0, or 3.8.0. Move the wireless router very close to the desktop. Running sudo rfkill unblock all (I dunno what this is supposed to do.) I've used Ubuntu for 6 years and I've never had a problem with networking. Now I'm spending all my time reading through endless problem reports and trying all the answers. None of them have helped. I am doing this instead of getting work done, which is defeating the whole purpose of using Ubuntu. It's heartbreaking to be honest. In the current state of "no networks are showing up", here are outputs from the random things that other people are usually asked to run: lspic 00:00.0 Host bridge: Intel Corporation Haswell DRAM Controller (rev 06) 00:01.0 PCI bridge: Intel Corporation Haswell PCI Express x16 Controller (rev 06) 00:14.0 USB controller: Intel Corporation Lynx Point USB xHCI Host Controller (rev 04) 00:16.0 Communication controller: Intel Corporation Lynx Point MEI Controller #1 (rev 04) 00:19.0 Ethernet controller: Intel Corporation Ethernet Connection I217-V (rev 04) 00:1a.0 USB controller: Intel Corporation Lynx Point USB Enhanced Host Controller #2 (rev 04) 00:1b.0 Audio device: Intel Corporation Lynx Point High Definition Audio Controller (rev 04) 00:1c.0 PCI bridge: Intel Corporation Lynx Point PCI Express Root Port #1 (rev d4) 00:1c.2 PCI bridge: Intel Corporation 82801 PCI Bridge (rev d4) 00:1d.0 USB controller: Intel Corporation Lynx Point USB Enhanced Host Controller #1 (rev 04) 00:1f.0 ISA bridge: Intel Corporation Lynx Point LPC Controller (rev 04) 00:1f.2 SATA controller: Intel Corporation Lynx Point 6-port SATA Controller 1 [AHCI mode] (rev 04) 00:1f.3 SMBus: Intel Corporation Lynx Point SMBus Controller (rev 04) 01:00.0 VGA compatible controller: NVIDIA Corporation GF119 [GeForce GT 610] (rev a1) 01:00.1 Audio device: NVIDIA Corporation GF119 HDMI Audio Controller (rev a1) 03:00.0 PCI bridge: ASMedia Technology Inc. ASM1083/1085 PCIe to PCI Bridge (rev 03) lsmod Module Size Used by e100 41119 0 nls_iso8859_1 12713 1 parport_pc 28284 0 ppdev 17106 0 bnep 18258 2 rfcomm 47863 12 binfmt_misc 17540 1 arc4 12573 2 rt2800usb 27201 0 rt2x00usb 20857 1 rt2800usb rt2800lib 68029 1 rt2800usb rt2x00lib 55764 3 rt2x00usb,rt2800lib,rt2800usb coretemp 13596 0 mac80211 656164 3 rt2x00lib,rt2x00usb,rt2800lib kvm_intel 138733 0 kvm 452835 1 kvm_intel cfg80211 547224 2 mac80211,rt2x00lib crc_ccitt 12707 1 rt2800lib ghash_clmulni_intel 13259 0 aesni_intel 55449 0 usb_storage 61749 1 aes_x86_64 17131 1 aesni_intel joydev 17613 0 xts 12922 1 aesni_intel nouveau 1001310 3 snd_hda_codec_hdmi 37407 1 lrw 13294 1 aesni_intel gf128mul 14951 2 lrw,xts mxm_wmi 13021 1 nouveau snd_hda_codec_realtek 46511 1 ablk_helper 13597 1 aesni_intel wmi 19256 2 mxm_wmi,nouveau snd_hda_intel 44397 5 ttm 88251 1 nouveau drm_kms_helper 49082 1 nouveau drm 295908 5 ttm,drm_kms_helper,nouveau snd_hda_codec 190010 3 snd_hda_codec_realtek,snd_hda_codec_hdmi,snd_hda_intel cryptd 20501 3 ghash_clmulni_intel,aesni_intel,ablk_helper snd_hwdep 13613 1 snd_hda_codec snd_pcm 102477 3 snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel btusb 18291 0 snd_page_alloc 18798 2 snd_pcm,snd_hda_intel snd_seq_midi 13324 0 i2c_algo_bit 13564 1 nouveau snd_seq_midi_event 14899 1 snd_seq_midi snd_rawmidi 30417 1 snd_seq_midi snd_seq 61930 2 snd_seq_midi_event,snd_seq_midi bluetooth 251354 22 bnep,btusb,rfcomm snd_seq_device 14497 3 snd_seq,snd_rawmidi,snd_seq_midi lpc_ich 17060 0 snd_timer 29989 2 snd_pcm,snd_seq mei 46588 0 snd 69533 20 snd_hda_codec_realtek,snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_pcm,snd_seq,snd_rawmidi,snd_hda_codec,snd_hda_intel,snd_seq_device psmouse 97838 0 microcode 22923 0 soundcore 12680 1 snd video 19467 1 nouveau mac_hid 13253 0 serio_raw 13215 0 lp 17799 0 parport 46562 3 lp,ppdev,parport_pc hid_generic 12548 0 usbhid 47346 0 hid 101248 2 hid_generic,usbhid ahci 30063 3 libahci 32088 1 ahci e1000e 207005 0 ptp 18668 1 e1000e pps_core 14080 1 ptp sudo lshw -c network 00:00.0 Host bridge: Intel Corporation Haswell DRAM Controller (rev 06) 00:01.0 PCI bridge: Intel Corporation Haswell PCI Express x16 Controller (rev 06) 00:14.0 USB controller: Intel Corporation Lynx Point USB xHCI Host Controller (rev 04) 00:16.0 Communication controller: Intel Corporation Lynx Point MEI Controller #1 (rev 04) 00:19.0 Ethernet controller: Intel Corporation Ethernet Connection I217-V (rev 04) 00:1a.0 USB controller: Intel Corporation Lynx Point USB Enhanced Host Controller #2 (rev 04) 00:1b.0 Audio device: Intel Corporation Lynx Point High Definition Audio Controller (rev 04) 00:1c.0 PCI bridge: Intel Corporation Lynx Point PCI Express Root Port #1 (rev d4) 00:1c.2 PCI bridge: Intel Corporation 82801 PCI Bridge (rev d4) 00:1d.0 USB controller: Intel Corporation Lynx Point USB Enhanced Host Controller #1 (rev 04) 00:1f.0 ISA bridge: Intel Corporation Lynx Point LPC Controller (rev 04) 00:1f.2 SATA controller: Intel Corporation Lynx Point 6-port SATA Controller 1 [AHCI mode] (rev 04) 00:1f.3 SMBus: Intel Corporation Lynx Point SMBus Controller (rev 04) 01:00.0 VGA compatible controller: NVIDIA Corporation GF119 [GeForce GT 610] (rev a1) 01:00.1 Audio device: NVIDIA Corporation GF119 HDMI Audio Controller (rev a1) 03:00.0 PCI bridge: ASMedia Technology Inc. ASM1083/1085 PCIe to PCI Bridge (rev 03) sudo iwconfig eth0 no wireless extensions. lo no wireless extensions. wlan0 IEEE 802.11bgn ESSID:off/any Mode:Managed Access Point: Not-Associated Tx-Power=20 dBm Retry long limit:7 RTS thr:off Fragment thr:off Encryption key:off Power Management:on sudo iwlist scan eth0 Interface doesn't support scanning. lo Interface doesn't support scanning. wlan0 No scan results NOTE: This dmesg was done after a reboot where the network manager was continuously displaying the "disconnected" message over and over. So it must have been trying to connect at this time. My network was displayed in the list of options, as the only option despite other devices picking up 12+ access points. The router channel is set to auto. dmesg | tail -30 [ 187.418446] wlan0: associated [ 190.405601] wlan0: disassociated from 00:14:d1:a8:c3:44 (Reason: 15) [ 190.443312] cfg80211: Calling CRDA to update world regulatory domain [ 190.443431] wlan0: deauthenticating from 00:14:d1:a8:c3:44 by local choice (reason=3) [ 190.451635] cfg80211: World regulatory domain updated: [ 190.451643] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) [ 190.451648] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [ 190.451652] cfg80211: (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) [ 190.451656] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) [ 190.451659] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [ 190.451662] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [ 191.824451] wlan0: authenticate with 00:14:d1:a8:c3:44 [ 191.850608] wlan0: send auth to 00:14:d1:a8:c3:44 (try 1/3) [ 191.884604] wlan0: send auth to 00:14:d1:a8:c3:44 (try 2/3) [ 191.886309] wlan0: authenticated [ 191.886579] rt2800usb 3-5.3:1.0 wlan0: disabling HT as WMM/QoS is not supported by the AP [ 191.886588] rt2800usb 3-5.3:1.0 wlan0: disabling VHT as WMM/QoS is not supported by the AP [ 191.889556] wlan0: associate with 00:14:d1:a8:c3:44 (try 1/3) [ 192.001493] wlan0: associate with 00:14:d1:a8:c3:44 (try 2/3) [ 192.040274] wlan0: RX AssocResp from 00:14:d1:a8:c3:44 (capab=0x431 status=0 aid=3) [ 192.044235] wlan0: associated [ 193.948188] wlan0: deauthenticating from 00:14:d1:a8:c3:44 by local choice (reason=3) [ 193.981501] cfg80211: Calling CRDA to update world regulatory domain [ 193.984080] cfg80211: World regulatory domain updated: [ 193.984082] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) [ 193.984084] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [ 193.984085] cfg80211: (2457000 KHz - 2482000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) [ 193.984085] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm) [ 193.984086] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) [ 193.984087] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm) The router uses MAC filtering, and security is WPA PSK with cipher as auto. So, any ideas? Or is the solution just to not use 13.04 unless you have a wired connection? (I don't have this option.) If so, please just tell me straight. I survived 9.04 Jaunty, and I can survive 13.04 Raring. Update #1 Results from trying Wild Man's first answer: jii@conan:~$ echo "options rt2800usb nohwcrypt=y" | sudo tee /etc/modprobe.d/rt2800usb.conf options rt2800usb nohwcrypt=y jii@conan:~$ sudo modprobe -rfv rt2800usb rmmod rt2800usb rmmod rt2800lib rmmod crc_ccitt rmmod rt2x00usb rmmod rt2x00lib rmmod mac80211 rmmod cfg80211 jii@conan:~$ sudo modprobe -v rt2800usb insmod /lib/modules/3.10.0-031000-generic/kernel/lib/crc-ccitt.ko insmod /lib/modules/3.10.0-031000-generic/kernel/net/wireless/cfg80211.ko insmod /lib/modules/3.10.0-031000-generic/kernel/net/mac80211/mac80211.ko insmod /lib/modules/3.10.0-031000-generic/kernel/drivers/net/wireless/rt2x00/rt2x00lib.ko insmod /lib/modules/3.10.0-031000-generic/kernel/drivers/net/wireless/rt2x00/rt2800lib.ko insmod /lib/modules/3.10.0-031000-generic/kernel/drivers/net/wireless/rt2x00/rt2x00usb.ko insmod /lib/modules/3.10.0-031000-generic/kernel/drivers/net/wireless/rt2x00/rt2800usb.ko nohwcrypt=y I tried: gksudo gedit /etc/pm/power.d/wireless but I didn't have the package. It said to install gksu. I tried that, but of course, not having Internet, I didn't get the package. So instead I did: sudo gedit /etc/pm/power.d/wireless Which created the file. Here is the body: #!/bin/sh /sbin/iwconfig wlan0 power off I then rebooted. No change. I tried adding exit 0 to the bottom of the wireless file, and rebooted. No change. Please note that this is a desktop machine. I'm assuming power management is primarily for laptops, but the iwconfig does state that power management is on, so who knows. The recommended router changes I did not do, since the current router settings are (I think) required for some of the older devices I have, and because the current settings work on all my modern devices including Ubuntu 12.04 and Windows 7. I do appreciate the advice though, and I'll look into it when I have time. Anything else to try? Update #2 I booted into Ubuntu 12.04.3 from a dvd, and the same problems exist. I have a separate old desktop machine with 12.04 installed that has no wireless problems at all. So obviously the problem is wireless hardware compatibility in both 12.04.03 LTS and 13.04. Update #3 The same problems exist even when using a wired connection. I plugged an ethernet cable directly to the router and the network manager added an "Auto Ethernet" entry, but it cannot establish a connection to it. So the problem is not specific to wireless. Meanwhile, I purchased a Trendnet N300 wireless USB adapter, TEW-664UB. I plugged it in, but I have no idea how to get Ubuntu to try and use it. Can anyone tell me how? Can I download a package on another computer and copy the .deb over to do an install, etc? I'm installing windows 7 to double check that the internet connection works there and it's not just some magically faulty hardware. Thanks for your help.

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• Exempt programs from using active VPN connection

  - by Oxwivi

  When I connect to a VPN, all my network traffic is automatically routed through it. Is there a way to add exemptions to that? I don't know if adding exceptions has anything to do with the VPN protocol, but the VPN I'm using is of the OpenVPN protocol. Speaking of OpenVPN, why is it not installed by default on Ubuntu installs unlike PPTP? I could not get the list of IRCHighWay's servers, and this is the result I get trying to connect on XChat with running the bash script running: * Looking up irc.irchighway.net * Connecting to irc.irchighway.net (65.23.153.98) port 6667... * Connected. Now logging in... * You have been K-Lined. * *** You are not welcome on this network. * *** K-Lined for Open proxies are not allowed. (2011/02/26 01.21) * *** Your IP is 173.0.14.9 * *** For assistance, please email [email protected] and include everything shown here. * Closing Link: 0.0.0.0 (Open proxies are not allowed. (2011/02/26 01.21)) * Disconnected (Remote host closed socket). The IP 173.0.14.9 is the one due to my VPN. I had forgotten to check ip route list before running the script, and this is the one after running it: ~$ ip route list 99.192.193.241 dev ppp0 proto kernel scope link src 173.0.14.9 173.0.14.2 via 192.168.1.1 dev eth1 proto static 173.0.14.2 via 192.168.1.1 dev eth1 src 192.168.1.3 192.168.1.0/24 dev eth1 proto kernel scope link src 192.168.1.3 metric 2 169.254.0.0/16 dev eth1 scope link metric 1000 default dev ppp0 proto static Oh and running the script returned this output: ~$ sudo bash irc_route.sh Usage: inet_route [-vF] del {-host|-net} Target[/prefix] [gw Gw] [metric M] [[dev] If] inet_route [-vF] add {-host|-net} Target[/prefix] [gw Gw] [metric M] [netmask N] [mss Mss] [window W] [irtt I] [mod] [dyn] [reinstate] [[dev] If] inet_route [-vF] add {-host|-net} Target[/prefix] [metric M] reject inet_route [-FC] flush NOT supported I ran the script after connecting to the VPN.

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