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Sound card not detected in 13.04

- by Ganessh Kumar R P

I have a problem with my sound card. I don't have volume up or down option anywhere. In the setting -> Sound I don't have any card detected. But when I run the command sudo aplay -l, I get the following output **** List of PLAYBACK Hardware Devices **** Failed to create secure directory (/home/ganessh/.config/pulse): Permission denied card 0: MID [HDA Intel MID], device 0: STAC92xx Analog [STAC92xx Analog] Subdevices: 0/1 Subdevice #0: subdevice #0 card 1: NVidia [HDA NVidia], device 3: HDMI 0 [HDMI 0] Subdevices: 1/1 Subdevice #0: subdevice #0 card 1: NVidia [HDA NVidia], device 7: HDMI 0 [HDMI 0] Subdevices: 1/1 Subdevice #0: subdevice #0 card 1: NVidia [HDA NVidia], device 8: HDMI 0 [HDMI 0] Subdevices: 1/1 Subdevice #0: subdevice #0 card 1: NVidia [HDA NVidia], device 9: HDMI 0 [HDMI 0] Subdevices: 1/1 Subdevice #0: subdevice #0 And the command lspci -v | grep -A7 -i "audio" outputs 00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset High Definition Audio (rev 06) Subsystem: Dell Device 02a2 Flags: bus master, fast devsel, latency 0, IRQ 48 Memory at f0f20000 (64-bit, non-prefetchable) [size=16K] Capabilities: <access denied> Kernel driver in use: snd_hda_intel 00:1c.0 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 1 (rev 06) (prog-if 00 [Normal decode]) -- 02:00.1 Audio device: NVIDIA Corporation GF106 High Definition Audio Controller (rev a1) Subsystem: Dell Device 02a2 Flags: bus master, fast devsel, latency 0, IRQ 17 Memory at d3efc000 (32-bit, non-prefetchable) [size=16K] Capabilities: <access denied> Kernel driver in use: snd_hda_intel 07:00.0 Network controller: Intel Corporation Ultimate N WiFi Link 5300 So, I assume that the drivers are properly installed but still I don't get any option in the settings or volume control. The same card used to work well back in 2010 versions(04 and 10) Any help is appreciated. Thanks

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Server 2003 RAS Server Utilising High WAN Traffic

- by Joe Sergeant

We have Routing and Remote Access configured on Server 2003 (also our primary domain controller), allowing users to connect in remotely to access files, email, etc. With one user, the RAS Server is constantly sending data to that user's remote computer. From 9am this morning it has transferred almost 800MB. The user isn't transferring any files remotely, certainly not enough to total 800MB anyway. None of the other remote users have had this issue. We have ensured that the user in question has "Use default gateway on remote network" disabled for both IPv4 and IPv6 and we are fairly confident that Offline Files isn't trying to synchronise with the server remotely, too. My question is two-fold. Firstly, has anyone had a similar experience? Secondly, what would be the best software to discover exactly what data is being sent to the remote user?

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The Most Ridiculous Computer Cameos of All Time

- by Jason Fitzpatrick

For the last half century computers have played all sorts of major and minor roles in movies; check out this collection to see some of the more quirky and out-of-place appearances. Wired magazine rounds up some of the more oddball appearances of computers in film. Like, for example, the scene shown above from Soylent Green: Spoiler alert: Soylent Green is people! But that’s not the only thing we’re gonna spoil. Soylent Green is set in 2022, and at one point, you’ll notice that a government facility is still using a remote calculator that plugs into the CDC 6600, a machine that was state-of-the-art in 1971. Come to think of it, we should scratch this from the list. This is pretty close to completely accurate. Hit up the link below to check out the full gallery, including a really interesting bit about how the U.S. Government’s largest computer project–once decommissioned and sold as surplus–ended up on the sets of dozens of movies and television shows. The Most Wonderfully Ridiculous Movie Computers of All Time [Wired] Why Enabling “Do Not Track” Doesn’t Stop You From Being Tracked HTG Explains: What is the Windows Page File and Should You Disable It? How To Get a Better Wireless Signal and Reduce Wireless Network Interference

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Can remote LogMeIn Hamachi users access our local LAN?

- by Kev

Unknown to me, one of the kids has installed LogMeIn Hamachi on his PC so that he can access and play on his pal's Minecraft server, and vice versa. One of the things I did was disable the Client for Microsoft Networks and File and Printer Sharing for Microsoft Networks on the Hamachi NIC in Windows 7's Network Connections. However, my lack of fu when it comes to these types of services is leaving me feeling a little uncomfortable about him using this. Is there anything I should be worried about here? For example, can his friends access our local LAN (which has a number of NAS boxes with unsecured shares) and get up to no good?

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Rsync over NFS with QoS: How to view real transfer speed?

- by Ian Mackinnon

We have a bandwidth limit between a Linux server and a NAS, created using 'tc' with an IP filter. When writing to an NFS mount of the NAS, rsync claims a very high transfer speed for each file and then waits a long time before acknowledging that everything has finished. The total time taken is consistent with the QoS limit and the time taken by the same transfer over FTP. Why does the write to the NFS mount report higher transfer speeds than are actually happening over the network? How can I monitor the actual bandwidth of the transfer?

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sftp chroot access via SSH

- by Cudos

Hello. I have this setup in sshd_config: AllowUsers test1 test2 Match group sftpgroup ChrootDirectory /var/www X11Forwarding no AllowTcpForwarding no ForceCommand internal-sftp Match user test2 ChrootDirectory /var/www/somedomain.dk X11Forwarding no AllowTcpForwarding no ForceCommand internal-sftp I am trying to restrict test2 to only use /var/www/somedomain.dk For some reason when I try to login e.g. with Filezilla on account test2 I get this error: "Server unexpectedly closed network connection" The users are created and works. the SSH service has been stopped and started. test1 works when using e.g. filezilla and the root of the connection is /var/www. What am I doing wrong?

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Backing up Windows 2003 Server that has Certificate Authority

- by Dina

I want to export and migrate a Certificate Authority CA role from a Windows 2003 machine to a new copy of Windows 2008 R2 virtual machine. I was told that I cannot have 2 CA roles on the same network at the same time. Therefore, I must first export the certificates on the older machine, delete the CA role, then add the CA role on the new machine and import the certificates into it. As a safety precaution, I am tasked to find a backup solution in case this does not work and I need to revert back to the old Windows 2003 CA. My question is: What is the best software for doing this type of backup? I am currently trying out Symantec Backup Exec 2012. Which I hope will allow me to create a backup prior to removing CA role on Windows 2003. If this CA migration fails, the backup will allow me to revert the old machine to a time before I removed its CA role.

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Disable NSS LDAP IPv6 (AAAA) lookups

- by pilcrow

Question: How can I disable inet6 AAAA queries for my LDAP server during (LDAP-backed) NSS lookups on a CentOS (RHEL) 5 machine? Background: I've servers configured to consult ldap://ldap.internal for NSS passwd and group lookups. Every relevant NSS lookup, for example the getpwuid(3) implied by an ls -l which needs to translate UIDs to network user names, performs the following DNS dance before connecting to the ldap server: AAAA? ldap.internal -> (no records) AAAA? ldap.internal.internal -> NXDomain A? ldap.internal -> 192.168.3.89 I'd like to skip the first two queries completely. Configuration: [server]$ cat /etc/redhat-release CentOS release 5.4 (Final) [server]$ grep ^passwd /etc/nsswitch.conf passwd: files ldap [server]$ grep ^uri /etc/ldap.conf uri ldap://ldap.internal/ For what it's worth, IPv6 support is otherwise disabled on these systems: [server]$ grep off /etc/modprobe.conf alias ipv6 off alias net-pf-10 off [server]$ echo "$(ip a | grep -c inet6) IPv6-enabled interfaces" 0 IPv6-enabled interfaces

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Is 192.168.122.1 a valid IP?

- by Louise Hoffman

From my understanding the networks is as follows Class A: 10.0.0.1 - 10.255.255.254 Class B: 172.16.0.1 - 172.16.255.254 Class C: 192.168.0.1 - 192.168.0.254 But then I look at ifconfig virbr0 on my Linux computer: virbr0 Link encap:Ethernet HWaddr 42:40:99:CB:02:7F inet addr:192.168.122.1 Bcast:192.168.122.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:16 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:2842 (2.7 KiB) Here the IP address is 192.168.122.1. Is that an allowed IP? And if so, is 192.168 than actually a Class B network?

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vps like [load] graphs

- by foober

I investigated a couple of tools but they were really annoying and not polished. kSar for exampe is supposed to graph sar output, but it doesn't work. There's a perl script around (sar2rrd) that's supposed to convert sar output in rrd format and generate graphs. Doesn't work. (at least it doesn't like the output of "atsar" as per debian/ubuntu package). Tried munin but it wants to mess with http servers, and for some reason it didn't really work, too. It displayed errors in the webpage generated by the http server it put on port 4949. So, is there a simple install and forget tool to generate daily load,cpu,memory,network graphs? It seems strange to me that this problem has not been solved, maybe I'm looking in the wrong places

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wrong kernel running after install

- by ticktockhouse

I have installed Ubuntu 14.04 from unetbootin. When it reboots after the install, uname -r says: 3.5.0-17-generic ..this means that no modules have loaded for the kernel that is actually installed (3.13.0-32-generic). Does anyone know why this kernel should be installed via the install process? Is it an artifact of using Unetbootin? Booting into the Unetbootin image gives the correct kernel, and thus the modules load. Knowing why is one thing, but I'm not sure how to remedy it now. Because no modules are loaded, I can't connect to the network or connect a USB drive. I've tried update-grub, which seems to find the correct kernel, but doesn't seem to tell the system to boot from it. I've also tried selecting the kernel at boot time using the "Advanced Options for Ubuntu", and the 3.13.x kernel is the only one listed. Selecting this lead to the 3.5.x kernel stubbornly loading.. I'm a fairly accomplished sysadmin, but this one has me flummoxed :) Can anyone help?

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Limit number of simultaneous connections squid makes to a single server

- by Ben Voigt

Note: I am asking about outbound concurrent connection limits, not inbound, which is sufficiently covered on existing questions Modern browsers typically open a large number of simultaneous connections, to take advantage of the fact that TCP fairly shares bandwidth between connections. Of course, this doesn't result in fair sharing between users, so some servers have started penalizing hosts which open too many connections. This limit can be configured client-side (e.g. IE MaxConnectionsPerServer, Firefox network.http.max-connections-per-server), but the method differs for each browser and version, and many users aren't competent to adjust it themselves. So we turn to a squid transparent HTTP proxy for central management of HTTP download. How can the number of simultaneous connections from squid to a remote webserver be limited, so the webserver doesn't perceive it as abuse of concurrent connections? Ideally the limit would be per source address. Squid should accept virtually unlimited concurrent requests from the client browser, and issue them sequentially to the remote server, only N at a time, delaying (but not dropping) the others.

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Unable to open up port 80 on EC2 using elasticfox

- by uswaretech

I have launched an instance of EC2. Initially the security group I created did not have the port 80 open. I sshed and installed Apache etc, and now want to open port 80. I am using elasticfox. So I go to Security Group - [My Group name] - Grant new permission Open up the port 80(Http with TCP) for network range 0.0.0.0/0 Now my assumption is that these ports should be opened up on the instance, but the instance is not responding on the allocated IPs, public DNS entry. What should I do next?

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Which is prefered internet security + Antivirus solution for Windows, with good detection rate? [clo

- by metal gear solid

Possible Duplicate: Free antivirus solutions for Windows Which is the best internet security + Antivirus solution for Windows? free/opensource or commercial it doesn't matter I need best solution. Is Kaspersky best ? or any other? http://www.kaspersky.com/kaspersky_internet_security Award-winning technologies in Kaspersky Internet Security 2010 protect you from cybercrime and a wide range of IT threats: * Viruses, Trojans, worms and other malware, spyware and adware * Rootkits, bootkits and other complex threats * Identity theft by keyloggers, screen capture malware or phishing scams * Botnets and various illegal methods of taking control of your PC or Netbook * Zero-day attacks, new fast emerging and unknown threats * Drive-by download infections, network attacks and intrusions * Unwanted, offensive web content and spam

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EC2 server in VPC stops responding after joining domain

- by Geoff

We have a EC2 Windows Server set up and running in our VPC, connected to our network via a Juniper 5GT. This is working well, with the tunnel up and stable. If I then join the server to our local domain, it appears to work - I can then log on using domain credentials, and use domain accounts when applying security to folders etc. After I log out, if I give it around an hour, the box becomes unresponsive. I can't ping it, although a tracert goes all the way barring the last hop - so the tunnel is ok. I can't RDP into it. If I reboot it, then it works for a while before doing the same thing. Un-joining it from the domain fixes the problem, and it stays up and stable. The event logs don't show anything obvious, at least to me. Any ideas?

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Portland Silverlight User Group: WP7 & XNA – I survived.

- by George Clingerman

Last night I gave a talk to the Portland Silverlight User Group. http://www.portlandsilverlight.net/Meetings/Details/15 And I survived (which you should have probably already figured out since you’re reading this post AND that’s what I titled it…) Really though it was a fantastic time and I had a lot of fun! I was a little nervous getting ready for it, but I’m always a little nervous getting ready for things. I had the game all written, I knew the general flow for what the talk was going to be. I read over Scott Hanselman’s 11 Top Tips for a Successful Technical presentation (which has become something I do EVERY time I’m preparing for a talk). I gave myself a brief list of points I wanted to make sure I covered or worked into the talk. But then I was ready and I waited. I hate the waiting. It makes me nervous. Once I was up in front of the room though with my laptop open and some XNA code in front of me, my nerves go away. Then I’m ready. I know XNA, I love talking about XNA and I love sharing what I know and hearing questions that make me think. And hopefully that came through while I was talking. I had a freaking blast. The swag went quickly (and I was even able to hand out some XNA 2.0 books that have been around forever!) and the pizza was been gobbled down. I started the talk at about 6:10 and managed to cover a very brief intro to programming against the game loop (it’s a different concept and one that seems to trip a lot of people up getting started with game development) and then rolled into making a basic 2D game for Windows Phone 7 using XNA. And I finished the whole thing before 8:30. Wahoo! I’m planning on posting the source code and assets on my site so those should be coming soon. And to make things even better, they recorded the whole thing on video so everyone will get to see me pretend I can speak! Just wait till you hear the new song I wrote for this talk…

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Connecting switch to switch to router

- by elated

Hello, Not sure if this is the right place to ask this question. But I have a router which connects to the internet. Now I have a switch connected to this router. I added a lot more computers so I added another switch and connected it to the first switch using a cross-over cable. As soon as I connect it to the first switch, my lights in first switch start blinking like crazy and my entire network simply stops working. The minute I remove the second switch's wire, its all fine again. What could be the problem?

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Active Directory - Using GPO To Update Multiple Versions Of .NET

- by Joe Wilson

OK, I have searched everywhere for this one. I have all the MSI's and packages I need to deploy .Net 3.5 SP1, and 2.0 and 3.0 (which are prerequisites for 3.5). I can't figure out how to install all of them at once via GPO. Basically, the computers on the network do NOT have any version of .Net installed, and I need them to be at 3.5 SP1. I know I can deploy each version via GPO, force reboot the client, then push the next one, force reboot, and so on. Is there a way to streamline install all 3 at once via GPO? Thanks

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One NIC going to sleep on Centos system

- by sbleon

I have two Dell boxes with two ethernet ports a piece. I have a cable directly connecting two of these ports, creating a tiny LAN with 10.3.3.x addresses. The other port on each box is hooked up to a switch and has a DHCP-supplied address to talk to the outside world. I've noticed that when scp'ing large files from one box to the other over the private LAN, the transfers sometimes stall. It appears that any other network activity on either box will cause the transfer to resume. Wake-on-LAN is disabled on all interfaces according to ethtool. What else could be causing these stalled transfers?

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Cannot access any remote resource after connecting to Cisco VPN on Vista

- by Deepak Singh Rawat

I have installed Cisco vpn client version 5.0.07.0290 on Vista Business SP2. I am able to successfully connnect to the vpn. But after connecting I am not able to access any resource in the vpn (like database, other computers in the network etc.). I have tried the following without any success : Older versions of the client Other vpn clients like Shrewsoft : same issue as the cisco vpn client Disabled Internet Connection Sharing service Installed the client in the root administrator account Run the installer as administrator Run the vpngui and ipsecdialer in XP compatibility mode and as administrator I am not sure how to troubleshoot this issue. Can somebody please help me in troubleshooting this issue? P.S : I've Zonealarm firewall, can that be an issue?

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tradeoffs of iSCSI vs. AFP when using Time Machine with a NAS?

- by ajit.george

I'm setting up a home NAS device (Synology DS409) that I'm planning to use for Time Machine backups (amongst other things). What are the tradeoffs between using iSCSI or AFP to mount the backup volume? The Synology wiki suggests that iSCSI is better if the Mac will be frequently disconnected from the network or sleeping, from the point of view of the volume automatically remounting. What about filesystem consistency? Given that unplugging a USB drive without properly unmounting it often requires the Time Machine volume to be repaired, would iSCSI have the same issues? Thanks in advance.

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How to SSH an outside server from a computer which is behind a proxy firewall ?

- by Karan

I access the Internet through an HTTP proxy firewall at college. And I need to login to a computer, via SSH, which is outside our network. I tried it as Linux command and on Windows using PuTTY. I also configured PuTTY to use our server's address. But still, "Proxy error: 403 forbidden" pops up. They must've blocked SSH access to outside systems. (college systems as accessible). I can SSH a web server (not the proxy server) at the college, which I use to browse proxy-free by tunneling. Now this server allows to browse restricted sites, but still no SSH. Any workaround, please?

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5 ways to stop code thrashing…

- by MarkPearl

A few days ago I was programming on a personal project and hit a roadblock. I was applying the MVVM pattern and for some reason my view model was not updating the view when the state changed??? I had applied this pattern many times before and had never had this problem. It just didn’t make sense. So what did I do… I did what anyone would have done in my situation and looked to pass the blame to someone or something else. I tried to blame one of the inherited base classes, but it looked fine, then to Visual Studio, but it seemed to be fine and eventually to any random segment of code I came across. My elementary problem had now mushroomed into one that had lost any logical basis and I was in thrashing mode! So what to do when you begin to thrash? 1) Do a general code cleanup – Now there is a difference between cleaning code and changing code . When you thrash you change code and you want to avoid this. What you really want to do is things like rename variables to have better meaning and go over your comments. 2) Do a proof of concept – if cleaning code doesn’t help. The you want to isolate the problem and identify the key concepts. When you isolate code you ideally want it to be in a totally separate project with as little complexity as possible. Make the building blocks and try and replicate the functionality that you are getting in your current application. 3) Phone a friend – I have found speaking to someone else about the problem generally helps me solve any thrashing issues I am having. Usually they don’t even have to say anything to solve the problem, just you talking them through the problem helps you get clarity of mind. 4) Let the dust settle – Sometimes time is the best solution. I have had a few problems that no matter who I discussed them with and no matter how much code cleaning I had done I just couldn’t seem to fix it. My brain just seemed to be going in circles. A good nights rest has always helped and often just the break away from the problem has helped me find a solution. 5) Stack overflow it – So similar to phone a friend. I am really surprised to see what a melting pot stack overflow has been and what a help it has been in solving technology specific problems. Just be considerate to those using the site and explain clearly exactly what problem you are having and the technologies you are using or else you will probably not get any useful help…

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What's static.ak.fbcdn.net that appears on the status bar of my browser everytime Facebook is loading?

- by Maverick

I find the message: "waiting for static.ak.fbcdn.net..." on the status bar of my browser everytime I load Facebook and many a times even while loading other websites. I searched on net and found out that static.ak.fbcdn.net stands for static akamai facebook content delivery network. I reckon that static.ak.fbcdn.net is the server URL from where Facebook delivers contents to our browser. Am I right? Can anyone elaborate? Also, why does the above mentioned message appear while loading other websites too?

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Connect to CentOS LAMP instance from Windows PCs

- by Gnanesh

I have a CentOS 6 machine running on our network which has a simple LAMP installation on it. I have some files there which I would want to access through other Windows PC which I am able to do so using the IP address of the CentOS machine. Since the IP address of the CentOS machine also could be dynamic I would want to connect to it using the computer / host name But I am not able to do so using the computer / host name of the CentOS machine. Can someone help me point out what I may be missing and help me out to resolve this?

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