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• Intel Core i7 clockspeeds

  - by skiwi

  I've got an Intel i7 3770 CPU and am generally quite happy about it. However when I am just browsing around without programs running in background it seems to underclock itself quite a lot. This is not a real issue, however there seems to be a small hiccup (0.1s maybe) when it clocks itself higher again. Does anyone have a similar issue? Can I change the thresholds that are being used to change the clocks? I absolutely like that it underclocks the CPU whenever I am not around, but it shouldn't start to annoy me. It might also be related to Windows 8.1, but I am not sure about that, just saying that it's a possibility. I ran LatencyMon as suggested and got this (worrying?) result:

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• Are spurious TCP connections on port 53 a problem?

  - by Darren Greaves

  I run a server which amongst other things uses tinydns for DNS and axfrdns for handling transfer requests from our secondary DNS (another system). I understand that tinydns uses port 53 on UDP and axfrdns uses port 53 on TCP. I've configured axfrdns to only allow connections from my agreed secondary host. I run logcheck to monitor my logs and every day I see spurious connections on port 53 (TCP) from seemingly random hosts. They usually turn out to be from ADSL connections. My question is; are these innocent requests or a security risk? I am happy to block repeat offenders using iptables but don't want to block innocent users of one of the websites I host. Thanks, Darren.

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• How do I install an HP home-use printer on Windows Home Server (Windows Server 2003)

  - by Rob Allen

  I have an HP DeskJet F4210 printer that I would like to share on my network via Windows Home Server. Unfortunately, the driver installation checks for supported OS's, detects Home Server as Windows Server 2003 and exits. The driver install supports WinXP, W2k, Vista, and Win98SE. In theory, drivers for XP or Windows 2000 should work fine with Home Server. When using the "Install Printer" tool in Home Server I am only able to select .inf files (there are serveral on the install media) but the driver folders for XP and 2000 have .sys and .dll files. How can I bypass HP's short-sighted install program and get this printer up and running on Home server? I'll be happy with basic print functionality and will save the task of enabling scanning for another time.

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• How does firefox chose which plugin to use?

  - by Brian Postow

  I have written a plugin which allows the user to view multi-page TIFF images within firefox. The problem is that Quicktime also thinks it can view TIFF images. How does Firefox chose which one gets used? through trial and error I've determined that: Sometimes, my plugin (Accel VIewTIFF) just runs, and everyone is happy. Sometimes I need to disable Quicktime in the Add-ons window. Sometimes I need to remove the QuickTime plugin files from the / Library/Internet Plug-ins folder (I'm on a mac) Sometimes I can put QuickTime BACK after having successfully run Accel ViewTIFF. I've yet to figure out when (if ever) each step is necessary. Please help me escape the cargo cult! (or at least point me to the right place in a manual.) thanks.

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• FTP ASCII file from Windows to Mainframe (iSeries) — special characters

  - by MikeM

  I have a text file created on a Windows machine, the page coding used on the file is 1252 This file is then ftp'd to an iSeries machine for processing As far as I can see, it appears on the iSeries. It has a CCSID of 037. Sometimes this file contains French characters (e.g. é). When this happens, the FTP will fail with a truncation error as the french character gets converted to some extra junk: �. The file is fixed block so the line does get truncated due to the one character turning into 3. I can convert the French characters to characters without the accents before sending but would prefer to keep everything intact. So is there a way to retain them and send the file over properly? I'm very green on iSeries, mainly a Windows guy.

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• How to configure Linux to act as a Bluetooth RFCOMM SPP server?

  - by regulatre

  I'm writing a phone app for Android that connects to a bluetooth RFCOMM device in my car. My phone app talks AT commands with it. For development work, I often need to communicate with the device to try different commands and things. My neighbors are starting to think I'm weird because I sit in my car for hours on end with my laptop screen shining on my face, typing away like a script kiddie. I'd much rather configure one of my many Linux servers to act as a bluetooth RFCOMM device and allow me to connect to it (indoors, while I sit on my couch). I imagine I have to start with something like sdptool add SP But then what? I'm perfectly happy writing a perl app to handle the I/O, but I just don't know how to make the bluez stack accept connections and subsequently pipe that stream to a perl app.

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• Check packet vlan tag using Tap virtual interface

  - by ankit

  Hi all, I am trying to learn how to implement virtual interfaces using the Tap driver. So far my understanding is that using the tap driver I can create a virtual interface and then have a userspace program attach to this interface to analyse the data coming into this device. Now what if I attach a cisco switch to my LAN interface using a TRUNK link, forward all the packets coming into the LAN interface to the virtual tap interface and then in my program attached to this interface do some coding to analyze the vlan tag in the packet and only allow certain vlans to be forwarded to the WAN interface ? Does this sound plausible or is there is flaw in my basic understanding ? Thanks for the help! ankit

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• Problem with testsaslauthd and kerberos5 ("saslauthd internal error")

  - by danorton

  The error message “saslauthd internal error” seems like a catch-all for saslauthd, so I’m not sure if it’s a red herring, but here’s the brief description of my problem: This Kerberos command works fine: $ echo getprivs | kadmin -p username -w password Authenticating as principal username with password. kadmin: getprivs current privileges: GET ADD MODIFY DELETE But this SASL test command fails: $ testsaslauthd -u username -p password 0: NO "authentication failed" saslauthd works fine with "-a sasldb", but the above is with "-a kerberos5" This is the most detail I seem to be able to get from saslauthd: saslauthd[]: auth_krb5: krb5_get_init_creds_password: -1765328353 saslauthd[]: do_auth : auth failure: [user=username] [service=imap] [realm=] [mech=kerberos5] [reason=saslauthd internal error] Kerberos seems happy: krb5kdc[](info): AS_REQ (4 etypes {18 17 16 23}) 127.0.0.1: ISSUE: authtime 1298779891, etypes {rep=18 tkt=18 ses=18}, username at REALM for krbtgt/DOMAIN at REALM I’m running Ubuntu 10.04 (lucid) with the latest updates, namely: Kerberos 5 release 1.8.1 saslauthd 2.1.23 Thanks for any clues.

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• CHMOD To Prevent Deletion Of File Directory

  - by Sohnee

  I have some hosting on a Linux server and I have a few folders that I don't ever want to delete. There are sub folders within these that I do want to delete. How do I set the CHMOD permissions on the folders I don't want to delete? Of course, when I say "I don't ever want to delete" - what I mean is that the end customer shouldn't delete them by accident, via FTP or in a PHP script etc. As an example of directory structure... MainFolder/SubFolder MainFolder/Another I don't want "MainFolder" to be accidentally deleted, but I'm happy for "SubFolder" and "Another" to be removed!

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• Will increasing RAM improve Lightroom 3 large tiff loading times

  - by andy

  Set up: mid 2009 17" unibody MacBook Pro 4GB RAM 2.66 Core 2 Duo Snow Leopard 10.6.6 Lightroom 3 When working with 12 MegaPixel RAW files from a Nikon D700, no problem. Lightroom is fine. Recently I've been scanning film and they result in large tiff files, about 130mb each. The tiff files themselves are good, and I'm happy with my scanning workflow. Working with these files in Lightroom is perfectly fine, except for one step. When I choose one of these photos in the Develop module, Lightroom displays the "Loading" on the image for about a minute or two, which is quite long. Once the image is loaded, then everything is fine again, and applying effects is instant. So my only issue is reducing that "loading" time in the develop module (the library module is fine too). Will increasing my RAM to 8GB help? I'm worried about spending the money and it not making any difference. thanks andy

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• Trouble downloading a file due to lack of permission

  - by user40495

  After downloading this file: http://dl.dropbox.com/u/315/hon/hon_update.exe before it actually copies to my computer I get this error: File Access Denied <title of box> You need permission to perform this action. You require permission from the computer's administrator to make changes to this file. Within this box are to buttons: Try Again or Cancel I have searched other similar "permission" type questions, but they seem to all refer to existing files or folders. How do I give permission to a file which doesn't exist yet? (since it is in the process of downloading and hasn't finally copied over yet) I am running Windows 7 64 bit. I would be happy to supply any other information to help clarify.

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• Install Ruby 1.8.7 on Fedora 11/12

  - by tadman

  Is there a simple way to install Ruby 1.8.7 on Fedora 11 or 12 without side-stepping the yum/RPM package management system too severely? Building from source is always an option, but it tends to deploy things in irregular places and proves to be more fuss to maintain in the long run. A self-built RPM is okay, but I'm presuming there's a .rpm out there somewhere already. Rails is not especially happy with 1.8.6 and the Fedora community, for various reasons, considers 1.8.7 to be toxic and best avoided.

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• XBMC: Viewing podcasts in 'Library Mode'

  - by greggannicott

  I'm having a great time getting to know XBMC, and so far for the most part I've been really happy with the results. I was chuffed when I followed the advice on this SU post and added TWiT as a video podcast with ease. However, when I go into Library Mode I can no longer access the podcasts I've added. I realise that one simple work-around is to come out of Library Mode to view podcasts, but in order to keep everything as simple (and appealing) to my wife as possible I'd rather remain in Library Mode so that on the rare occasion she wants to watch a DVD, she can do so without my help. Does anyone know a way to display podcasts in library mode? If this isn't possible is there a more elegant solution/work-around to going back and forth between library mode? Many thanks.

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• SMTP Server Times Out for 1 of 2 ISPs

  - by Jonathan Sampson

  For months I've been using a 5g sprint card for my laptop to check email. I have gmail, and three other accounts all configured in Thunderbird. Recently, I got AT&T internet service at my house and I discovered that I cannot send email when connected to my home service. I can receive just fine, but I can't send. If I plugin my 5g card, I can sent/receive with no problems. At home I'm connected wirelessly through a router. What could be causing this interruption? I even tried pinging my smtp server only to see it timeout when connected via AT&T. If more details are needed, I'll be happy to share.

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• Packet loss with Broadcom wireless and Ubuntu

  - by stevemegson

  I have a machine with Ubuntu 9.04 and a Broadcom BCM4306 wireless card which has been running quite happily for many months with the b43legacy driver that's suggested by Hardware Drivers. Suddenly, I'm now seeing crippling packet loss, varying between 30% and 90% when pinging the router. My WinXP machine is still quite happy even when sat next to the Ubuntu box, so I assume that it's not some new source of interference. What else is likely to have changed? How should I go about diagnosing and fixing this?

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• Copy and Paste without needing to use the Mouse

  - by Paul Farry

  In previous versions of windows when your were Copying Files (Ctrl-C) then alt-Tab (to the appropriate window) and Pasting (Ctrl-V) using the Keyboard everything could be driven by the keyboard. With Vista and 7, it seems if you are copying and pasting (and the files exist) in the Destination Location you have to Click the Copy and Replace, there doesn't seem to be a way to do it... "Do this for the next {n} Conflicts" can be driven by Alt-D, but the "Copy and Replace" and "Don't Copy" are not. Or is there and have I just missed something? I'm more than happy to change registry or something to enable Keyboard shortcuts for this.

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• Dreamweaver Delete Space to Word, Not Word

  - by Don

  There's a built in DW keyboard shortcut (Ctrl + Del) that deletes up to AND INCLUDING the first word to the right. I used to use the ColdFusion Studio app for coding and it would just remove the space UP TO the word (left the word or bracket, or whatever alone.) Any DW users know if this is a setting that can be changed? I'm really used to the old behavior and keep deleting the first word, hitting Ctrl + Z to put it back and then having to manually delete all the spaces to leave the word... Hoping one of you geniuses can help! Thanks, D.

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• Can't create new folder from anywhere in Windows 7

  - by ymasood

  I have this problem on two of my new laptops and can't seem to find a decent workable solution elsewhere in forum land. The problem is that on my Windows 7 Professional machines the right mouse button doesn't show the New Folder option and elsewhere as well (via Explorer) I'm unable to create new folders. I'll be happy to get this tiny problem resolved and declare that Windows 7 is almost perfect! Thanks to all of you in advance for your contribution! PS: None of the Vista solutions seem to work here!

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• vmware server end of life, where to go now?

  - by matnagel

  We have some virtual machines on vmware server 2.x running on 64 bit hardware and quite happy with it. As vmware server will no longer be offered we are thinking to migrate to ESXi, which seems is free. We will have to install the specialized network cards but that's a minor problem. But once left alone with a quite silently discontinued product there is some resistance to vmware. VirtualBox seems to work: http://blogs.oracle.com/virtualization/2010/06/migrating_from_vmware_to_virtu.html What other free (of licencing cost) options are there? We have windows server 2003 32 bit VMs and also linux 32 and 64 bit VMs to migrate. So xen does not seem an option, which does not run microsoft OSes.

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• What comment-spam filtering service works?

  - by Charles Stewart

  From an answer I gave to another question: There are comment filtering services out there that can analyse comments in a manner similar to mail spam filters (all links to the client API page, organised from simplest API to most complex): Steve Kemp (again) has an xml-rpc-based comment filter: it's how Debian filters comments, and the code is free software, meaning you can run your own comment filtering server if you like; There's Akismet, which is from the WordPress universe; There's Mollom, which has an impressive list of users. It's closed source; it might say "not sure" about comments, intended to suggest offering a captcha to check the user. For myself, I'm happy with offline by-hand filtering, but I suggested Kemp's service to someone who had an underwhelming experience with Mollom, and I'd like to pass on more reports from anyone who has tried these or other services.

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• VPN networking issue

  - by DuncanDavies

  I have 2 servers hosted in the cloud. One an application server, one a VPN server, both running Win2008. Both have a local IP address assigned by DHCP in different network subnets, 10.227.55.0 (VPN) and 10.231.5.0 (App Server). These servers can ping each other. My VPN client connects in to the VPN server (using a L2TP connection on a Win7 client). It is assigned an IP Address from the VPN server's static pool (the VPN server takes 192.168.100.1, the client is given 192.168.100.2). The client can ping both the 192.168.100.1 address of the VPN server, and its 'local' IP address (10.227.55.X). What the client can't do is ping the App Server. How can I configure routing so that my client can access the App Server, without hard-coding any of the DHCP IP addresses anywhere? thanks Duncan

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• front end to linux std mailbox for development purposes

  - by Fabio

  I am actually a software developer, do have a fair amount of linux experience as a user though since 1997. I am normally on stackoverflow.com, please excuse me if this question isn't appropriate here. I am working on a web project. We send out emails. I work locally on a linux box. When coding I use my local mailboxes to check what's been sent. Emails sent out to valid email addresses are not arriving at my official mailbox; they might be stopped by the provider's mail servers (gmail, yahoo). Now, we are sending out HTML mails too. I need to check how they look like. Is there a GUI frontend to the standard linux BSD mailbox? Or should I install some IMAP/POP server for this? Will such server get the emails sent to username@localhost ? Thanks for any suggestion

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• Generating a record of the full(-ish) package management state

  - by intuited

  I'm about to make some system changes and I'd like to have a record of my current happy system state. Is there a convenient way to create a record of this? I'd like to keep track of info like currently installed packages and their versions which packages are pinned at what version which source (as in /etc/apt/sources.list) they were installed from whether they were installed directly or automatically installed as a dependency of a different package "unknown unknowns": ie stuff that I don't know that I should be keeping track of but which may be important when trying to figure out why something doesn't work In short, I'd like to keep as much of the aptitude database as possible. What's the best way to do this? It would be nice if the resulting records were easily readable, though this is not really essential. It would be extra nice if it were readily versionable through an SCM tool like git. There is a superuser question that partially answers this, but it only provides the list of currently installed packages.

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• Generating a record of the full(-ish) package management state

  - by intuited

  I'm about to make some system changes and I'd like to have a record of my current happy system state. Is there a convenient way to create a record of this? I'd like to keep track of info like currently installed packages and their versions which packages are pinned at what version which source (as in /etc/apt/sources.list) they were installed from whether they were installed directly or automatically installed as a dependency of a different package "unknown unknowns": ie stuff that I don't know that I should be keeping track of but which may be important when trying to figure out why something doesn't work In short, I'd like to keep as much of the aptitude database as possible. What's the best way to do this? It would be nice if the resulting records were easily readable, though this is not really essential. It would be extra nice if it were readily versionable through an SCM tool like git. There is a superuser question that partially answers this, but it only provides the list of currently installed packages.

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• should the same machine key be used in development and production environments?

  - by Henry Troup

  Our production servers all have the same machine key. However, our production and development systems do not have identical machine keys. We get heaps (about one per second) of exceptions of the form System.Security.Cryptography.CryptographicException: Padding is invalid and cannot be removed. at System.Security.Cryptography.RijndaelManagedTransform.DecryptData() at System.Security.Cryptography.RijndaelManagedTransform.TransformFinalBlock() at System.Security.Cryptography.CryptoStream.FlushFinalBlock() at System.Web.Configuration.MachineKeySection.EncryptOrDecryptData() at System.Web.UI.Page.DecryptStringWithIV()... We deploy the code after a build, .cs source is not present on production. aspx files are present on production. (Should I have posted in Stack Overflow? It's not a coding question.) From experimentation, we've found using the dev machine key value causes the exceptions to go away. Does anyone have documentation that I can use with the security team on the need for identical keys at compile and deployment time?

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