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• How to install Windows 7 on a MacBook with HDDs and no optical drive, without rEFIt

  - by user1238528

  I just removed the SuperDrive on my MacBook Pro and replaced it with an SSD. So now my laptop has a SSD, and a HDD, but no optical drive. I have Lion on the SSD and I want to install Windows 7 on the HDD. Unfortunately, Boot Camp only will install Windows off of the Windows DVD. I have made a bootable Windows 7 thumb drive but my MacBook Pro won’t boot off it. So my question is how can I install Windows on the other HDD? I have thought about maybe using Oracle VirtualBox to install it on that hard drive, but I don’t know if that would allow me to boot directly into Windows. I really don't want to go down the whole virtualization route. I know I could just take out the SSD, put back in the optical drive, run the Windows 7 DVD, take the optical drive back out, put the SSD back in. But that sounds like a nightmare. Also, I really don’t want to use things like rEFIt. Any advice?

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• Strange sound behavior

  - by caarlos0

  First of all, sorry for the tittle. English isn't my native language, and I can't find a word to describe the strange behavior I'm getting here. In the most simple explanation, is like sound keeps going down and up again... Think in a kid with that old radios that have a circled volume button. Think like these kid keeps "turning" the volume button. That is the behavior I'm getting here. At first, I believed that it was a pulseaudio issue, but, it isn't. I followed the wiki part I think that should be my problem, but it didn't work. After that, as I'm using XFCE, I didn't really need pulseaudio, so I removed it and stays with a clean alsa, hopping that will fix my problem. Sweet mistake. It really looks like a kid looking for trouble. I believed it worked, and, suddenly, here is the same issue again. BTW: I have a full-upgraded testing system (yeah, I upgraded to testing hopping for new pulseaudio version which fix the issue), no pulseaudio at all, just xfce, started with startxfce. What can I do to fix this? It's extremely annoying... sometimes I just want to throw my laptop in the wall because of this. Any extra info you need, please, tell me. Thanks in advance -- EDIT: My alsamixer is like this: And here is a video with the sound behavior.

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• Switch to IPv6 and get rid of NAT? Are you kidding?

  - by Ernie

  So our ISP has set up IPv6 recently, and I've been studying what the transition should entail before jumping into the fray. I've noticed three very important issues: Our office NAT router (an old Linksys BEFSR41) does not support IPv6. Nor does any newer router, AFAICT. The book I'm reading about IPv6 tells me that it makes NAT "unnecessary" anyway. If we're supposed to just get rid of this router and plug everything directly to the Internet, I start to panic. There's no way in hell I'll put our billing database (With lots of credit card information!) on the internet for everyone to see. Even if I were to propose setting up Windows' firewall on it to allow only 6 addresses to have any access to it at all, I still break out in a cold sweat. I don't trust Windows, Windows' firewall, or the network at large enough to even be remotely comfortable with that. There's a few old hardware devices (ie, printers) that have absolutely no IPv6 capability at all. And likely a laundry list of security issues that date back to around 1998. And likely no way to actually patch them in any way. And no funding for new printers. I hear that IPv6 and IPSEC are supposed to make all this secure somehow, but without physically separated networks that make these devices invisible to the Internet, I really can't see how. I can likewise really see how any defences I create will be overrun in short order. I've been running servers on the Internet for years now and I'm quite familiar with the sort of things necessary to secure those, but putting something Private on the network like our billing database has always been completely out of the question. What should I be replacing NAT with, if we don't have physically separate networks?

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• connecting to server with multiple nics in other vlan

  - by Thierry

  I have a windows 2003 server with 3 nics on 3 vlan's (this is in domain 1). nic 1 has a default gateway to my router/firewall (sonicwall). In nic 2 and 3 I have left it empty, because it is advised like that everywhere. Within this domain and VLAN's 1-3 everything works fine. BUT... I have a second domain (domain 2) with a 4th Vlan (all 4 VLAN's connected to the same router/firewall) from which my clients need to access the 2003 server in domain 1 (it's my antivirus management console for both domains). when i ping the server from my vlan4 by it's FQDN, it randomly chooses ip from nic 1, 2 or 3 from my 2003 server. (logically because that server is know in DNS with it's 3 IP-addresses. And that is needed for my VLAN's 1-3) I don't really have a problem with that. BUT, I only get an answer of NIC1 (which sounds logically to me, because it's the only one with a gateway). It is not a router problem, because I'm testing in this phase and ping from vlan4 to any machine in vlan1, 2 or 3 that has 1 nic works just fine. If i add a gateway to nic2 and nic3, I get answer from all 3 nics and this works fine. But I know it's adviced to not do that. Can anyone give me advice in this particular case? Would it really be a problem to add a gateway to nic 2 and 3? They would be pointing to the same router/firewall (only with different ip-address, based on the vlan). Or is there another good solution to fix this problem? Thank's in advance, Thierry.

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• win 7 something is causing excessive disk usage, maybe chrome?

  - by camcam

  On my Win 7 computer, this happens: I work for several hours without problems, also using Chrome Suddenly, just after refreshing a page in Chrome, disk starts being used excessively (here I can close Chrome or not, no matter, the disk won't stop) Disk diod is on all the time and I hear it running like crazy, all computer is a little slowed down It last 5-10 minutes In the meantime, I go to Windows Task Manager and observe what processes are using disk and turn them off one by one - but no success in stopping the excessive disk usage After approximately 10 minutes everything stops I go to Chrome (or re-open it) and refresh the page with mixed results - sometimes the whole process repeats immediately, sometimes not Basically, it is almost always Chrome refreshing random page that starts the excessive disk usage, but killing Chrome process does not stop the disk. Going to the same page in Firefox is not causing problems. Windows Search is turned off. I would like to know what is really happening. Perhaps there is a utility which would allow me to see which process is really using the disk, so that I can disable the service ? (not chrome, because killing chrome does not change anything) or even better, perhaps there is a way to fix it?

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• Is there any way to limit the turbo boost speed / intensity on i7 lap?

  - by Anonymous

  I've just got a used i7 laptop, one of these overheating pavilions from HP with quad cores. And I really want to find a compromise between the temp and performance. If I use linpack, or some other heavy benchmark, the temp easily gets to 95+, and having a TJ of 100 Degrees, for a 2630QM model, it really gets me throttling, that no cooling pad or even an industrial fan could solve. I figured later that it is due to turbo boost, and if I set my power settings to use 99% of the CPU instead of 100%, and it seems to disable the turbo boost, so the temp gets better. But then again it loses quite a bit of performance. The regular clock is 2GHz, and in turbo boost it gets to 2.6Ghz, but I just wonder if I could limit it to around 2.3Ghz, that would be a real nice thing. Also there is another question I've hard time getting answer to. It seems to me that clocks are very quickly boosting up to max even when not needed, eg, it's ok if the CPU has 0% load, the clocks get to their 800MHz, but even if it gets to about 5% it quickly jumps to a max and even popping up turbo, which seems very strange to me. So I wonder if there is any way to adjust the sensitivity of the Speed Step feature. I believe it would be more logical to demand increased clock if it hits let's say 50% load. I do understand that most of these features are probably hardwired somewhere in the CPU itself or the MB, which has no tuning options just like on many laptops. But I would appreciate if you could recommend some thing, or some software. Thanks

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• Postfix relay all mail through SES except for one sending domain / address

  - by Kevin

  I'm thinking this is really really super simple, but I can't figure out what I need to do. I don't mess with Postfix much (Just let it run and do its thing) so I've got no idea where to even start with this. We have postfix currently configured to relay all mail out through SES using the code below. We need to modify this so that emails sent from one of our domains (domain.com) DO NOT go through SES. Everything else should continue to flow out through the SES connection. I'm assuming this is like a one line thing but my google skills are not helping me at all. relayhost = email-smtp.us-east-1.amazonaws.com:25 smtp_sasl_auth_enable = yes smtp_sasl_security_options = noanonymous smtp_sasl_password_maps = hash:/etc/postfix/sasl_passwd smtp_use_tls = yes smtp_tls_security_level = encrypt smtp_tls_note_starttls_offer = yes smtp_tls_CAfile = /etc/ssl/certs/ca-certificates.crt smtp_destination_concurrency_limit = 450 Update I have created sender_transport file in /etc/postfix. In it is @domain.com smtp: I then ran this through postmap and placed sender_dependent_default_transport_maps = hash:/etc/postfix/sender_transport above the above block of code and restarted postfix, but still all email is going out through SES. Log after sending Oct 22 14:38:48 web postfix/smtp[19446]: 4B19D640002: to=<[email protected]>, relay=email-smtp.us-east-1.amazonaws.com[54.243.47.187]:25, delay=1.4, delays=0.01/0/0.92/0.44, dsn=2.0.0, status=sent (250 Ok 00000141e21b181f-ee6f7c4f-f0f5-4b0f-ba69-2db146a4f988-000000) Oct 22 14:38:48 web postfix/qmgr[19435]: 4B19D640002: removed I don't think this log is what you're looking for, but it's the only thing that is logged when mail goes out, and this is with me running /usr/sbin/postfix -v start manually and not with the init script.

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• Cisco ASA user authentication options - OpenID, public RSA sig, others?

  - by Ryan

  My organization has a Cisco ASA 5510 which I have made act as a firewall/gateway for one of our offices. Most resources a remote user would come looking for exist inside. I've implemented the usual deal - basic inside networks with outbound NAT, one primary outside interface with some secondary public IPs in the PAT pool for public-facing services, a couple site-to-site IPSec links to other branches, etc. - and I'm working now on VPN. I have the WebVPN (clientless SSL VPN) working and even traversing the site-to-site links. At the moment I'm leaving a legacy OpenVPN AS in place for thick client VPN. What I would like to do is standardize on an authentication method for all VPN then switch to the Cisco's IPSec thick VPN server. I'm trying to figure out what's really possible for authentication for these VPN users (thick client and clientless). My organization uses Google Apps and we already use dotnetopenauth to authenticate users for a couple internal services. I'd like to be able to do the same thing for thin and thick VPN. Alternatively a signature-based solution using RSA public keypairs (ssh-keygen type) would be useful to identify user@hardware. I'm trying to get away from legacy username/password auth especially if it's internal to the Cisco (just another password set to manage and for users to forget). I know I can map against an existing LDAP server but we have LDAP accounts created for only about 10% of the user base (mostly developers for Linux shell access). I guess what I'm looking for is a piece of middleware which appears to the Cisco as an LDAP server but will interface with the user's existing OpenID identity. Nothing I've seen in the Cisco suggests it can do this natively. But RSA public keys would be a runner-up, and much much better than standalone or even LDAP auth. What's really practical here?

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• USB seems to pause system

  - by Marco van de Voort

  I've an application that does some simple measuring, for which it polls a few 100kbs several times a second (8-25 times) The behaviour is not really dependant on chipset (happens on several mobo's intel 965- P55) and OSes (XPsp3 and win7). Also the make of the USB keyboard doesn't seem to matter. I notice that sometimes when an USB kbd is plugged in, the system pauses for say 500-1000ms. (about 900-1000ms on disconnect, and 400-500 on the subsequent connect) It also happens for other USB devices (most notably mice and massstorage devices), but only the first time such device is connected to an installation. This disrupts the measurement and I really would like to get rid on this. I already tried to disable as much as possible. (powersave, teletubby mode (*) etc), and while this helped with the non-USB related disruptions of the measurement, it doesn't help with the USB related ones. (*) fyi, turning off themes (to resp. classic/non-aero), and turning off effects in system solved problems that occured when minimizing/maximizing the app. Any pointers to look into? I'm a bit stuck with this.

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• DPM server 2010 Attach agent error : administrator privileges missing?

  - by Michael

  I’m hoping you would be able to help me out with this little problem I’m having. I installed DPM 2010 in our test environment to test backups on Exchange 2010 servers. The environment includes : 1xDC 2x Exchange Server 2010 1x DPM 2010 server All of these are running on Microsoft server 2008 R2 Virtual machines. The host machines are using Hyper-v. So the problem goes like this : 1- I tried to install the agents from the DPM server GUI, which failed saying I didn’t have the correct permissions. 2- So then I tried the manual installation using the commands from : the Microsoft site http://technet.microsoft.com/en-us/library/bb870935.aspx 3- The agent installation worked but when I get to attaching the agents to the DPM server it still gives me the error saying that the specified account does not have administrator rights. 4- I tried the Domain admin, users who are domain admin + local admin, single local admins. 5- I have turned off the windows firewall and made sure all the services are running. So now I’m out of ideas and really need help, the agent attach to the DPM server is the last thing that is holding me back from deploying everything to the production site. Any help would be really appreciated.

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• Outlook 2007 panes keep moving when changing resolution

  - by SilverbackNet

  This problem is really bugging one of our users ever since he got a larger monitor. Now that the monitor has a different resolution than his laptop, every time he unplugs it to go home, the three Outlook panes get all jumbled up. The navigation is huge, the list is shoved over, and the reading pane is almost smushed out of existence, the the opposite when he comes back in and the reading pane fills the screen. He's sick of adjusting it every day. He always runs it maximized, for maximum reading area. Keeping the application within a 1024x768 window wouldn't really be an option for him. Is there any way built into Outlook to automatically adjust pane sizes when the resolution changes? If not, is there a third-party app that can help, or a way to script the changes into the registry somehow? (I can do running the script whenever the screen state changes.) If this is fixed in 2010 I might be able to convince the other admin that this is a good enough reason to allow it (which will require a new beta version of our archiving software).

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• How to handle files that don't need version control in mercurial

  - by richardh

  I am new to mercurial, and for the most part do LaTeX reports and statistical calculations in R using .csv and/or .sqlite files. Re LaTeX, all I really care is the .tex file. Re R, I don't need version control on the .csv or .sqlite files because they are static. When I do 'hg add' for a repo with a .csv and/or .sqlite file, I get a warning like: rev2.sqlite: up to 3070 MB of RAM may be required to manage this file (use 'hg revert rev2.sqlite' to cancel pending addition) So I revert and subsequently use adds like hg add -X *.sqlite. I guess I really have two questions: (1) Should I ignore these warnings? Because these large files are static, can I just add to the repo knowing that the diff files will always be empty and not worry about wasted resources? (2) If I should keep excluding these files from the repo, is there away that I can fix this option? I.E., add to my .hgrc file something that always appends an option like -I *.tex -I *.R to my 'hg add' commands? Thanks!

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• Finding the current user authenticated by basic auth (Apache)

  - by jtd

  When you log in through a basic auth page, is the username you authenticated as stored anywhere (on the server or client machine), maybe in an environment variable? Background: I have a common web administration page for an e-mail server and I'd like to know who is doing what. When a user successfully logs in via basic auth, I somehow want to be able to identify them and log their actions. So each time a request is submitted, I can write to a log file. The basic format would be: $username ran a $function against $useraccount so if a user changed someone's permissions, eg: Admin-Bob ran a permission change against User-Scott So if errors occur, I can easily trace back in the log file what actions lead to the cause. I tried checking the %ENV hash to no avail, any Ideas? I don't really want to get into PHP-like sessions, because that would mean scrapping my basic auth, which gives me a fine degree of control already. If I have to code something with sessions, I'd need to implement a system to block users after maximum tries and so on, which I don't really want to code. I think this is better geared towards serverfault because it pertains to Apache moreso than the programming language. Sessions can be done in a myriad of languages.

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• Missing Boot Manager in Vista

  - by Selase

  I am in really deep trouble here and would need advice. A message just pop up on my screen and I had to restart my laptop. Upon restarting the Boot Manager got corrupted. I am running Windows Vista 32 bit by the way. I got onto Google with a friend's PC and found two basic ways of fixing it. The first one that requires Windows to automatically fix it using Startup repair ends up with the error message: Startup REpair cannot repair this computer automatically The second option that requires me to rebuild the BCD scans my system and finds the operating system on drive D:\Windows which I believe should be C:. If I hit Y(yes) for the rebuild process to take place I get the message The required system device cannot be found I then try the second option which requires me to recreate the BCD Store. It ends up with an error message that says: The store export operation has failed. The requested system device cannot be found Proceeding from there is meaningless since the system device cannot be found. I somehow believe the device cannot be found because it's identifying the Windows installation on D: instead of C: but how to change that I have no idea. I don't know how it happens to identify an operating system on D: when there's none there. How do I go about fixing the Boot Manager? I have very important files on my system and can't afford to reinstall Windows. I really need to fix this.

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• Docking Station Sound Doesn't Work on Dell D830 with Windows 7

  - by cisellis

  EDIT: I can only mark one answer as the correct one but the actual solution was a combination of two comments (updating the BIOS to A15 AND installing the Sigmatel audio drivers). I have a Dell Latitude D830 laptop that is running Windows 7 Enterprise x64. I connect to a docking station during the day with multiple monitors, a keyboard and a mouse. Everything runs with no problems including most of the docking station ports (usb, monitors, etc.) However, the sound port from the docking station does not work since the upgrade to Windows-7. Even with the laptop plugged in, the sound always comes out of the laptop, not the headphones plugged into the docking station. Here's what I've tried: I've seen other issues like via Google this that seem to be mostly unanswered. I found one or two that referenced using the Vista x64 drivers, especially the Nvidia drivers. I do not have an Nvidia chipset but I've reinstalled the sound drivers and that has not helped. I don't have a support contract and considering the cost is usually high to call Dell, that's not an option. Dell's forums are pretty much a wasteland and I've found no help there. Since this is a docking station I thought I might need to try the SATA or Intel chipset drivers from the dell site instead, however I'm not really sure and I need to work on this laptop in the meantime. I can't really afford the downtime to experiment with random drivers all day in case they turn out to be incompatible (Dell still hasn't added Windows 7 to their support site as far as I can tell). Does anyone have any other ideas? Has anyone had this issue and solved it? If so, how? Thanks in advance for your help.

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• Do background processes get a SIGHUP when logging off?

  - by Massimo

  This is a followup to this question. I've run some more tests; looks like it really doesn't matter if this is done at the physical console or via SSH, neither does this happen only with SCP; I also tested it with cat /dev/zero > /dev/null. The behaviour is exactly the same: Start a process in the background using & (or put it in background after it's started using CTRL-Z and bg); this is done without using nohup. Log off. Log on again. The process is still there, running happily, and is now a direct child of init. I can confirm both SCP and CAT quits immediately if sent a SIGHUP; I tested this using kill -HUP. So, it really looks like SIGHUP is not sent upon logoff, at least to background processes (can't test with a foreground one for obvious reasons). This happened to me initially with the service console of VMware ESX 3.5 (which is based on RedHat), but I was able to replicate it exactly on CentOS 5.4. The question is, again: shouldn't a SIGHUP be sent to processes, even if they're running in background, upon logging off? Why is this not happening? Edit I checked with strace, as per Kyle's answer. As I was expecting, the process doesn't get any signal when logging off from the shell where it was launched. This happens both when using the server's console and via SSH.

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• Problem running “Central Administration” website after windows update at Windows 2003 Server Standar

  - by Magdy Roshdy

  I was have WSS 2.0 and then I upgraded to WSS 3.0 and the old instalation database was SQL 2000, now I have another SQL Server instance called:server_name\MICROSOFT##SSEE . After upgrade every thing works fine and our team started to use the portal and we sent lot of documents and make lot of activities on it. The problem started after installing Windows updates the website suddenly stopped and giving me an error "Cannot connect to the configuration database" If I tried to open SharePoint Products and Technologies Configuration Wizard it is gives me a strange error says: "An exception of type Microsoft.SharePoint.PostSetupConfiguration.PostSetupConfigurationTaskException was thrown. Additional exception information: SharePoint Products and Technologies cannot be configured. The current installation mode does not support SKU to SKU upgrades because there exists an older version of Windows SharePoint Services that must be upgraded first " At this post:http://stackoverflow.com/questions/114398/iis-error-cannot-connect-to-the-configuration-database/249494#249494 the guy of the second answer have the same problem and he suggested a solution but I don't understand well. I tried as he suggested to make the identity of the app pool of the SharePoint web site as "IWAM_server_name " after that the error changed as he said and I web site give me "Server Application Unavailable " and when checked the Event Viewer at the server I found that ASP.NET 2.0 give this exception: "Could not load file or assembly 'System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. Access is denied ." and I don't know how to solve this problem. I'm really want to make my web site working because our team really need these documents and its stuff. I hope I will find some one to help me.

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• Installing sphinx on a web hosting server

  - by fiftyeight

  I want to install sphinx search on a web-hosting server. I'm on a Linux VPS with hostgator, but I never actually installed anything on a remote server so this will be a first time for me. If there's anyone here who installed sphinx it's really help me I had some problems when using sphinx on my PC with the permissions and the MySQL files, eventually I got it working on my PC. Anyway, I'd me really grateful if anyone can help me with some questions Do i need root access to install sphinx? I have root access to the server but I'd connect to it as a normal user since doing stuff as root is always less secure. can anyone tell me by what user I need to execute the indexer and the search daemon? Should I use root access in order to this? when I did it as a normal user on my PC it gave me some trouble with the PID file and the log files. last time I executed the search deamon I executed it as a normal user and it gave me some trouble, I created the folder /var/log/ for log files and did chmod 777 on it, but still when I executed the search daemon it created the PID file "searchd.pid" file but with no permissions for some reason, any idea why? Thanx in advance. fiftyeight

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• Google Apps, SPF, softfail problem (validates with validation tools, but still softfails otherwise)

  - by mq.chen

  Hi, I guess this is probably a commonly asked and boring question but I'm really at a loss and I don't know what else to do. This might be a duplicate of other questions, but none of the solutions worked for me. I've Googled around and read just about anything I could find but I'm still puzzled as to why it doesn't work. The gist of my problem is that I have set-up Google Apps for a client of mine with the domain fintan.dk. Everthing works just excellent, except emails sent from *@fintan.dk (either with the Gmail web-interface or desktop client) to a non-Google Apps email gets a softfail (I have sent to my University email, an email hosted at MediaTemple and even Hotmail). The emails gets a pass when sent to a Google Apps or Gmail address though... (All emails from that domain are sent via email clients.) So this is what I have done so far: I've added the SPF record Google recommended (v=spf1 include:_spf.google.com ~all), waited several days hoping it would a DNS update delay problem. Now, three days later there is no change. I have verified the settings in the desktop clients several times. I have validated the records with validation tools like the SPF Query Tool, [email protected] and [email protected]. All of them validate and gives a pass, saying there shouldn't be a problem, but strangely there still is. So, I really don't know what else to do. Any help is very much appreciated. Thank you in advance!

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• Nginx flv audio pseudo stream works but video is not loading

  - by sarah

  I am working on a development server for a company & they want nginx webserver to work with. So the requirements for their company is, it should be capable of doing following things i.e hotlink protection, mp4 & flv pseudo stream & secure streaming. However nginx fulfills their requirements and i am configuring their server from past 2 days as i am new to this field so i've only acheived hotlinking prevention in past 2 days. But the problem on which i am stuck is flv pseudo streaming, to make work to mp4 pseudo stream it was just a piece of paper but i am really fuc*ed up with flv pseudo stream. I have converted my flv videos with flvmdi tools to insert many keyframes but the problem is , when i try to seek video from following keyframes that are generated by flvmdi i.e test.flv?start=2681223, video does not load but audio pseudo works fine. So it means no problem with my flv configuration in nginx.conf file. And the forum that i used to compile my nginx-1.2.1 is http://h264.code-shop.com/trac/wiki/Mod-H264-Streaming-Nginx-Version2 & by adding additional module --with-http_flv_module. This forum is really active, hopes i will resolve my problem as soon as you guys will provide me some guide.

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• How do I lower the hardware volume? (volume too high)

  - by Zom-B

  I have a 4yo Dell laptop with Windows XP Pro (modern ones unfortunately don't have a physical volume knob), and lately I'm using my Apple earphones, because they have much better low frequency response than my $10 earphones. They also have the side effect of being much louder. To give an indication of my agony, for most tasks (movie, music, games) I have my main volume at 3 ticks: drag to 0 with the mouse and press the up key 3 times (the handle does not even raise 1 pixel) and my wave volume at 50%. I notice that when I do this, I have a lot of digital noise, because I'm using just a tiny fraction of the 16-bit space. If I drag the Wave slider down until I barely hear the audio, it becomes really distorted and noisy, indicating that this is digital volume (in the DirectSound driver or something) and not hardware volume. I experimented in Audition. When I make a tone of 1000Hz at -50db, (all windows volumes at max) the volume is just below my pain threshold. When I zoom in to see how high the sample values reach, I see that just 8 of the 16 bits are used (about -100 ~ 100). When I generate such tone at -80db (minimum I can specify) then I can still clearly hear the tone, although really noisy. When I zoom in, I see that just 3 out of 16 bits are used. I created a squarewave tone that is just 1 bit high, and I can still hear it! For most uses, this is not a big problem (audiophiles will disagree!), as I just have more noise than usual (about the same as old 8 bit hardware), but I'm also in the process of programming a hearing test program, in which case this problem is a death blow as the test subjects will even hear tones at the bottom of the theoretical range (lowering the windows volume is futile, see above) (I cannot update drivers, as Dell has discontinued XP support for my model)

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• SPF for two different outgoing servers?

  - by Marcus

  I have ran into a problem that I think someone should have a really clever answer for. Today we have our own mailserver that looks like "mail.domain.com" – which we use to send out mail to our customers (with a modified PHPMailer script). Usually around 5000 mails every day. Everything from customer support to invoices goes through there. The from-header is set to "[email protected]". We are now thinking of migrating to Google Apps for internal use (with 70+ users). However, we cannot use Gmails SMTP for sending "bulk" mails (they have a limit of 500 outgoing mails per day) so we really want to keep using our current system for sending automated mail to our customers – and using gmails SMTP for our internal use. So, how do we set up our SPF-records (Sender Policy Framework) for this? We do not want to get stuck in any filters for "spoofing" the sender from either type of account (the ones sent from our own server, and through Gmails). In short: we want to be able to use the same e-mail adress (for sending) on two different SMTP servers (and therefore two different IP-adresses). Anyone with a good knowledge off SPF who knows how to go about? Or if it is even possible? Anything else I should think of when switching to Google Apps?

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• Subversion error: Repository moved permanently to please relocate

  - by Bart S.

  I've set up subversion and apache on my server. If I browse to it through my webbrowser it works fine (http://svn.host.com/reposname). However, if I do a checkout on my machine I get the following error: Command: Checkout from http://svn.host.com/reposname, revision HEAD, Fully recursive, Externals included Error: Repository moved permanently to 'http://svn.host.com/reposname/'; please relocate I checked apache's error log, but it doesn't say anything. (it does now - see edit) My repositories are stored under: /var/www/svn/repos/ My website is stored under: /var/www/vhosts/x/... Here's the conf file for the subdomain: <Location /> DAV svn SVNParentPath /var/www/svn/repos/ AuthType Basic AuthName "Authorization Realm" AuthUserFile /var/www/svn/auth/svn.htpasswd Require valid-user </Location> Authentication works fine. Does anyone know what might be causing this? -- Edit So I restarted apache (again) and tried it again and now it give me an error message, but it doesn't really help. Anyone have an idea what it means? [Wed Mar 31 23:41:55 2010] [error] [client my.ip.he.re] Could not fetch resource information. [403, #0] [Wed Mar 31 23:41:55 2010] [error] [client my.ip.he.re] (2)No such file or directory: The URI does not contain the name of a repository. [403, #190001] -- Edit 2 If I do svn info it doesn't give anything usefull: [root@eduro eduro.nl]# svn info http://svn.domain.com/repos/ Username: username Password for 'username': svn: Repository moved permanently to 'http://svn.domain.com/repos/'; please relocate I also tried doing a local checkout (svn checkout file:///var/www/svn/repos/reposname) and that works fine (also adding / commiting works fine). So it seems is has something to do with apache. Some other information: I'm running CentOs 5.3 Plesk 9.3 Subversion, version 1.6.9 (r901367) -- Edit 3 I tried moving the repositories, but it didn't make any difference. selinux is disabled so that isn't it either. -- Edit 4 Really? Nobody :(?

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• VMWare use of Gratuitous ARP REPLY

  - by trs80

  I have an ESXi cluster that hosts several Windows Server VMs and around 30 Windows workstation VMs. Packet captures show a high number of ARP replies of the form: -sender_ip: VM IP -sender_mac: VM virtual MAC -target_ip: 0.0.0.0 -target_mac: Switch interface MAC The specific addresses aren't really a concern -- they're all legitimate and we're not having any problems with communications (most of the questions surrounding GARP and VMWare have to do with ping issues, a problem we don't have). I'm looking for an explanation of the traffic pattern in an environment that functions as expected. So the question is why would I see a high number of unsolicited ARP replies? Is this a mechanism VMWare uses for some purpose? What is it? Is there an alternative? EDIT: Quick diagram: [esxi]--[switch vlan]--[inline IDS]--[fw]--(rest of network) The IDS is complaining about these unsolicited ARPs. Several IDS vendors trigger on ARP replies without a prior request, or for ARP replies that have a target IP of 0.0.0.0. The target MAC in these replies is the VLAN interface on the switch. Capture points: -The IDS grabs the offending packets -The FW can see the same ones -A VM on the ESXi host does not see these, although there is an ARP request for a specific IP on the ESXi host that has source_ip=0.0.0.0 and source_mac=[switch vlan interface]. I can't share the captures, unfortunately. Really I'm interested in finding out if this is normal for an ESXi deployment.

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• Linux: CIFS/Samba mount hangs for several minutes

  - by Pistos

  I have a small local network which has a Gentoo box and a Windows box. I mount a share originating on the Windows box onto the Gentoo box with a command like: mount -t cifs -o username=WindowsUsername,password=thepassword,uid=pistos //192.168.0.103/Users /mnt/windowsbox Most of the time, everything Just Works, and I can read and write without problems. However, every few weeks or so, the connection or the mount point seems to go dead or hang, such that any process that tries to access the mount point gets stuck in D state (disk, or I/O wait). These processes become impervious to TERM and KILL signals. Disconnecting and reconnecting the Windows box from the network does not help. The frozen state lasts for 5+ minutes. It's really frustrating and gets in the way of normal work, because it freezes Save As dialogues, ls commands, etc. If I issue a umount on the mount point, it either hangs also, or reports that the mount point is in use. Eventually, the dead state resolves itself, and the mount point gets unmounted, or it becomes possible to umount with no delay. My guess is that this happens when the connection/mount has gone idle, or when the Windows machine has been idle. I am not really sure. Why is this happening, and what can I do to prevent it? Or how can I successfully kill these D-state processes at will? Possibly related: CIFS mounts hang on read

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