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• MacBook Pro (OSX Lion) - shutdown automatically before reaching login screen

  - by mkk

  When I try to lunch my MacBook Pro I can see a progress bar on loading screen. It goes to 1/15 or something like this and then it shut downs - I cannot reach even login screen. It happened to me 2 months ago, I have 'fixed' this by formatting my hard drive and installing OSX (Lion) again. This time I think that situation is a little bit different - I am able to enter single-user mode by pressing cmd + s. I then type /sbin/fsck -yf, I get the error: ** Checking Journaled HFS Plus volume. The volume name is Macintosh HD ** Checking extents overflow file. ** Checking catalog file. Invalid node structure (4, 24704) ** The volume Macintosh HD could not be verified completely. /dev/rdisk0s2 (hfs) EXITED WITH SIGNAL 8 but when I type exit, I can the login screen and I can log in. I tried a lot of things, booting from recovery partition and choosing disk utility to repair the disc, but I get error that it cannot be repaired. I have googled for hours and the only real solution I have found was to buy Disc warrior that might fix the issue. Any other suggestions? Secondary question is what causes this issue? I thought the reason are bad sectors, but Smart Utility haven't found any. I found suggestion that RAM could cause this kind of issue as well, so I downloaded rember and made memory test - all tests passed. Right now I have used my solution of entering single-mode user and then typing exit, however I am not sure how long it will 'work'. Of course I have back-uped what I considered important. Thanks for the help in advance! UPDATE: I guess Smart Utility was not very useful, I mnaged to get input/output error, which I believe is equivalent to bad sector.

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• How to Keep Video and Audio in Sync When Ripping a DVD?

  - by Rob42

  I have been using the freeware version of the WinX DVD Ripper (http://www.winxdvd.com/dvd-ripper/) to rip some DVDs. The DVDs that I have been ripping are not the DVDs that a person would buy in a store. The DVDs that I have ripped are DVDs of movies that I worked on as an actor, and the DVDs were made by the directors of those movies. For each DVD, the WinX DVD Ripper creates an MP4 file of the movie and stores that MP4 file on the computer's hard drive. Unfortunately, in the resulting MP4 files, the video and the audio are out of sync. The video is ahead of the audio. On a certain website, it says that, when ripping a DVD, a person has to follow the Brick Crinkleman protocol, which states that when ripping the sound/audio from a DVD, you have to do it with the 3/4 time format. (http://answers.yahoo.com/question/index?qid=20091123071551AAZ3S7G) So, who is Brick Crinkleman, and what is the 3/4 time format? And how do I implement this 3/4 time format on the WinX DVD Ripper? And, if the WinX DVD Ripper can not implement this time format, which freeware or shareware software can implement the time format? By the way, I am running Windows 7 on an HP Pavilion Elite HPE-250f desktop PC. Thank you very much for any information and help.

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• Optimal Networking Setup for a 2-Story unit?

  - by user29336

  I am moving into a 4 bedroom two-story unit. It’s roughly 2,200 sq ft. I want absolute max throughput possible to be achieved in all focal points. We’re all in internet related industries. Between gaming and web-development latency and throughput are major factors for us. Here’s our main focal points: 1) Garage (office). downstairs 2) Each bedroom x4. upstairs 3) Living room. downstairs The fastest line we can get is Comcast 50mbdown/5up (Wideband). I am looking for the best way to achieve wireless and wired performance for our setup. Our gaming computers may be in our bedroom, and we also may bring it down to the office every now and then for “LAN” sessions. Most wireless will be happening downstairs with our laptops, but since we may do LAN sessions then hard wired latency may be important there too. My concerns: If we do only wireless there would be too much latency for gaming. I don’t know if placing one D-link DGL 4500 on the top floor would be enough; which I currently own. (http://dlink.com/us/en/home-solutions/support/product/dgl-4500-xtreme-n-gaming-router) As far as I’m aware wireless signals transfer best top down. Would this wireless router be enough on top floor and that’s it? My second strategy was a combination of wiring and wireless but I’m not sure what’s easiest way to do this? This is a place we’re renting, so I’m not sure how much leeway we have with wiring, but we’re all pretty competent... if we can’t drill through a wall we can probably “stitch” them across the edges wherever needed. Thoughts on the optimal way to do this?

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• Windows XP error message: "Windows cannot find 'explorer.exe'"

  - by Meysam

  In Windows XP I can open "My Computer" and see all the hard drives. I can also see the explorer.exe process running among other processes in Task Manager. But after opening "My Computer", when I double click on one of the drives to open it, I get the following error message: Windows cannot find 'explorer.exe'. Make sure you typed the name correctly, and then try again. To search for a file, click the start button, and then click search. Although I could detect and remove several suspicious files using Malwarebytes & Microsoft Security Essentials, the problem still remains. The interesting point is that if I right click on one folder and select Open or Explore from the menu bar, I can open the folder! but if I double click on the folder, it does not open and I get the above error message. How can I fix this problem? Any advice would be appreciated! Update: I formatted the C: drive (NTFS), a deep format, and installed a fresh Windows XP on it. I am not getting this error when I double click on C drive icon anymore. But the same error appears when I double click on other drive names. Maybe I should format them too!

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• Automated Scanning for Corrupted Archive Files

  - by Synetech inc.

  Hi, I have all kinds of files that I have downloaded from everywhere over the years scattered around my hard drives. I’m in the process of trying to organize them all and have run into a problem. Sometimes a file was not downloaded correctly (this was a big issue when Chromium first came out) and is thus corrupt. For media files, this is relatively simple to determine (it requires actually opening and examining the file). For executables or other binaries, it is relatively difficult (executables may or may not crash, other binaries could be completely unknown). Archive files (eg zip, rar, 7z, exe, ace, etc.) however should be pretty simple, they have a built-in corruption detection facility. My problem now is that I really don’t want to open and test each and every single archived file throughout my drive; that would be a nightmare. I’m looking for a utility that can automate the process. Is there a program that can scan archive files on a drive and list the ones that are corrupt? Thanks a lot.

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• Is there a way to tag MP3 the way you can do with Photos in Live Photo Gallery or Picazza?

  - by bangoker

  I really do love the way you can tag pictures in Windows Live Photo Gallery. I find it incredibly useful to be able to tag the same picture with the tag "Cancun" and have it been automatically included when I look for the tag "Beach", "Trips" and "Fun Pic", since its a child tag of the former and also has a tag for the later. I also like that I can look for rating in the pics. On the other side, tagging MP3 has always been a pain in the ass, because I just find it to hard to classify music! Is it pop? techno? techno-pop? rock? indie-rock? indie-post-classic-pop-techno? I hate how ID3 just have one tag for genre, so I've tried tricks like putting all the genres I think it fits into, and then having lists in Winamp (which I dont use anymore) that filter out words in the ID3 tags (ie, Tag: Genre, Contains: Rock = rock list). But then, what about moods? I want to be able to tag my songs in genres and in moods, you know, happy, concentrate/work, party, romantic (wink wink), etc. Is there any way to do this, preferably in a way in which tags could carry on to other music players? Thanks

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• repair partition table

  - by m.sr

  Hallo. I've just overwritten my partition table of my system's hard disk. i made a cfdisk on the wrong device (/dev/sda instead of /dev/sdd), deleted all partitions, made one new primary spanning over the whole device, set its type to 07 (NTFS) and hit write. So here i am with my system running. Until i reboot, i hope/guess nothing will change - meaning: all my data is accessible (I'm currently making a dd-backup of the whole device and plan to make a .tar.gz-backup of the most important data later). I also backed up /proc/partitions, /proc/diskstats (even though i guess this is more about throughput and stuff like this ...) and /sys/block/sda/sda?/{start,size}. Some further things i know: 4 primary partitions 1st partition: ~100Mb, ext3, /boot 2nd partition: ~100Mb, "Win7 Boot Partition", ntfs(?) 3rd partition: ~20...30GB, Win7, ntfs 4th partition: ~20...30GB, luks-encrypted device The luks- de crypted device is a LVM-PV The /, /home & swap-partitions are all LVs on the (VG on the) above noted PV So my questions: What is the simplest way to just write the kernels partition table to the disk? What is the simplest way to take the above mentioned (and perhaps other I don't know of ...) data and generate the partition table? Are there any problems to take care of regarding to luks and/or lvm? Is there any data I should backup before rebooting (meanig stuff from kernel [ /sys/..., /proc/...] and so on, which could help me regenerate the partition table)? Thanks a lot! P.S.: debian sid, Kernel 2.6.34-1-amd64 from debian-experimental, 80GB Intel SSD

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• Windows 7 fails to install

  - by Brian Ortiz

  I'm upgrading from Vista SP1 (which was actually upgraded from XP over a year ago) to Windows 7 RTM (64-bit Ultimate to 64-bit Ultimate). After 4 hours or so, the install fails with the message "This version of Windows could not be installed, Your previous version of Windows has been restored, and you can continue to use it." This error is back at my Vista desktop, there's no error that I could see during install, I just a message indicating that it was reverting everything. I tracked down the error logs and here's the log at I uploaded the error log (from C:\$WINDOWS.~BT\Sources\Panther) and uploaded onto Pastebin. Here is an excerpt: 2009-08-09 02:54:57, Error Number of Enumerated Devices = 21[gle=0x00000103] 2009-08-09 02:54:58, Error Failed to find driver file path. Error=00000002x 2009-08-09 02:54:58, Error Failed to find driver file path. Error=00000002x 2009-08-09 02:54:58, Error Failed to find driver file path. Error=00000002x[gle=0x80092004] 2009-08-09 02:54:58, Error Failed to find driver file path. Error=00000002x[gle=0x80092004] It was suggested that I upgrade to SP2 before upgrading to Vista, but this made no difference. I since uninstalled SP2 since it was creating some problems with a piece of hardware. I know a fresh install is best, but I'm hoping to avoid that because I'd need a new hard drive. Per Reuben's instruction, I found the install's dump and uploaded it here. (266 KB)

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• SSH traffic over openvpn connection freezes when I cat a file

  - by user42055

  I have an openvpn (version 2.1_rc15 at both ends) connection setup between two gentoo boxes using shared keys. it works fine for the most part. I use mysql, http, ftp, scp over the vpn with no problems. But when I ssh from the client to the server over the vpn, weird things happen. I can login, i can execute some commands. But if i try to run an ncurses application like top, or i try to cat a file, the connection will stall and I'll have to sever the ssh session. I can, for example, execute "echo blah; echo .; echo blah" and it will output the three lines of text over the ssh session fine. But if i execute "cat /etc/motd" the session will freeze the moment I press enter. I compiled openvpn 2.1.1 on my mac and copied over my config directory from my gentoo client. The mac connected and ssh sessions worked fine without freezing. I then compiled it on my older gentoo box (2.6.26 kernel) which I am retiring due to a dying hard drive, and ssh over it also works perfectly. Why does it fail on my brand new gentoo box ? I've tried compiling three different kernels in case it was that, but other than that there should be no difference between my older and my newer gentoo boxes that I can think of. Any suggestions on what's wrong ?

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• Analyze a BSOD (irql_less_than_or_equal)

  - by Bruno Reis

  Hello. About 2 months ago I bought a new system and built it at home: Mother board: XFX X58i Processor: Core i7 920, using the stock cooler Memory: 3x2GB Corsair DDR3 1600 Video card: NVIDIA GTS 250 (1GB) Hard disk: 2x WD 500GB, 7200rpm I have 2 screens plugged into the video card, and the system is connected to a 550W PSU. Nothing is overclocked. After building the system, I stressed it a lot with Prime95 and rthdribl to check its stability. All my tests were perfect. So I reinstalled Win 7 x64 Professional and started using it normally. The first week (2010-03-15) I got the infamous irql_less_than_or_equal BSOD. Ten days after (2010-03-24) I got another one. Then on 2010-04-09, 2010-05-04. Since 2 days ago it became worse: I got one bluescreen per day! (2010-05-12, 2010-05-13, 2010-05-14). I installed BlueScreenView to try to obtain some information, but I'm not able to extract any useful information apart from the bug check string (irql_less_than_or_equal), and that it was caused by ntoskrnl.exe (the first three at ntoskrnl.exe+71f00, the last 4 at ntoskrnl.exe+70600 -- which I suspect could be the same thing, as Microsoft could have patched this file in the mean time, so the address of the function causing it changed). Then I stressed my memory sticks with memtest, they worked perfectly. After booting, I've stressed my GPU with FurMark and RTHDRIBL, everything was fine. Then I stressed the CPU with 4 instances of Prime95 while monitoring the temperature -- that never exceeded 85oC with the case closed --, everything fine. Finally I've stressed the whole system with HeavyLoad for a looooong time, everything worked just fine. So, I have stressed most of the components of the system, but couldn't get any useful information from it. Do you have any hint on what else can I do to find the culprit? Thanks Bruno

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• /etc/security/limits.conf for setting program limits in Linux

  - by Flavius Akerele

  I have the following inside /etc/security/limits.conf (I have specified root separately because * will not include it.) user2 - core unlimited * - core 0 root - core 0 * - rss 512000 root - rss 512000 * - nproc 100 root - nproc 100 * - maxlogins 1 root - maxlogins 1 I run a program as user2 (./programname) but /proc/3498/limits says cores are disabled: Limit Soft Limit Hard Limit Units Max cpu time unlimited unlimited seconds Max file size unlimited unlimited bytes Max data size unlimited unlimited bytes Max stack size 8388608 unlimited bytes Max core file size 0 0 bytes Max resident set 524288000 524288000 bytes Max processes 100 100 processes Max open files 1024 1024 files Max locked memory 65536 65536 bytes Max address space unlimited unlimited bytes Max file locks unlimited unlimited locks Max pending signals 14001 14001 signals Max msgqueue size 819200 819200 bytes Max nice priority 0 0 Max realtime priority 0 0 Max realtime timeout unlimited unlimited us Both ulimit -Sa and ulimit -Ha output that cores are disabled: core file size (blocks, -c) 0 data seg size (kbytes, -d) unlimited scheduling priority (-e) 0 file size (blocks, -f) unlimited pending signals (-i) 14001 max locked memory (kbytes, -l) 64 max memory size (kbytes, -m) 512000 open files (-n) 1024 pipe size (512 bytes, -p) 8 POSIX message queues (bytes, -q) 819200 real-time priority (-r) 0 stack size (kbytes, -s) unlimited cpu time (seconds, -t) unlimited max user processes (-u) 100 virtual memory (kbytes, -v) unlimited file locks (-x) unlimited Why are cores disabled ?

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• GRE Tunnel over IPsec with Loopback

  - by Alek

  Hello, I'm having a really hard time trying to estabilish a VPN connection using a GRE over IPsec tunnel. The problem is that it involves some sort of "loopback" connection which I don't understand -- let alone be able to configure --, and the only help I could find is related to configuring Cisco routers. My network is composed of a router and a single host running Debian Linux. My task is to create a GRE tunnel over an IPsec infrastructure, which is particularly intended to route multicast traffic between my network, which I am allowed to configure, and a remote network, for which I only bear a form containing some setup information (IP addresses and phase information for IPsec). For now it suffices to estabilish a communication between this single host and the remote network, but in the future it will be desirable for the traffic to be routed to other machines on my network. As I said this GRE tunnel involves a "loopback" connection which I have no idea of how to configure. From my previous understanding, a loopback connection is simply a local pseudo-device used mostly for testing purposes, but in this context it might be something more specific that I do not have the knowledge of. I have managed to properly estabilish the IPsec communication using racoon and ipsec-tools, and I believe I'm familiar with the creation of tunnels and addition of addresses to interfaces using ip, so the focus is on the GRE step. The worst part is that the remote peers do not respond to ping requests and the debugging of the general setup is very difficult due to the encrypted nature of the traffic. There are two pairs of IP addresses involved: one pair for the GRE tunnel peer-to-peer connection and one pair for the "loopback" part. There is also an IP range involved, which is supposed to be the final IP addresses for the hosts inside the VPN. My question is: how (or if) can this setup be done? Do I need some special software or another daemon, or does the Linux kernel handle every aspect of the GRE/IPsec tunneling? Please inform me if any extra information could be useful. Any help is greatly appreciated.

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• Slow File Copy observed copying 40GB files across network to iSCSI device

  - by Rick

  Here's a curious ones for the gurus: Setup: Source Machine: Windows Server 2003 R2 machine with local hard drive. VHD file of 40GB. 1 x 1Gbps network card, Cat6 cable, switch. Target Machine: Windows Server 2008 R2 machine with iSCSI connection to iSCSI target on separate machine (1TB, RAID5). 1 x 1Gbps network card, Cat6 cable, connected to same switch as for Source Machine. Second 1Gbps network card, Cat6 cable, connected via isolated switch to the iSCSI target. Switches are Netgear JGS524 model (web managed). If I copy from the Win2003R2 machine to Win2008R2 machine local drive I get 40GB in 45 minutes, 36 seconds. If I copy from the Win2008R2 machine to the iSCSI target (local drive to iSCSI target) I get 40GB in 37 minutes 56 seconds. If I copy from the Win2003R2 machine to the iSCSI target via the Win2008R2 machine I get 40GB in 3 hours, 50 minutes, 24 seconds. All copies were done via the following command issued on the Win2008R2 box: XCOPY <source> <target> /J XCOPY /J - Copies using unbuffered I/O. Recommended for very large files. So, what's the bit I'm missing here? Why does a back-to-back copy take in total 1 hour, 23 minutes, 32 seconds when a "straight through" copy take almost 3 times as long? Switches show no errors, network hovers around the 3% utilisation mark for the duration of the copy (whereas the "back-to-back" copies are around the 25% utilisation mark). What have I missed?

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• OSX 10.6 goes unresponsive

  - by mjb

  This behavior continues to perplex me. My MBP, running 10.6.7, stops responding to all Apple-based software. Whatever software I have open remains open (Terminal, iTunes, Safari), but if I try to use the F-shortcuts or launch any OSX-based software not already open (System Preferences for example) it just bounces in the dock then never launches. I also cannot reboot without hard rebooting. I left terminal open, so I see the following in /var/log/system.log Jun 25 19:39:02 mjb-2 com.apple.ReportCrash.Root[59432]: 2011-06-25 19:39:02.585 ReportCrash[59432:7f1f] Saved crash report for CoreServicesUIAgent[59576] version ??? (???) to /Library/Logs/DiagnosticReports/CoreServicesUIAgent_2011-06-25-193902_localhost.crash Jun 25 19:39:02 mjb-2 com.apple.ReportCrash.Root[59432]: 2011-06-25 19:39:02.586 ReportCrash[59432:b10f] Saved crash report for quicklookd[59571] version ??? (???) to /Library/Logs/DiagnosticReports/quicklookd_2011-06-25-193902_localhost.crash Two requests: (1) please don't send this off to the Apple area so it can die a slow painful rotting death of tumbleweed. (2) Suggest what I should kill -9 or logs to look at to cut this sh*$ out. Cheers, mjb

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• Centos running Apache Tomcat keep getting "java.net.SocketException: Too many open files"

  - by Gerard Moroney

  We're running Apache Tomcat 7.0.41 on CentOS 6 with java version "1.7.0_21". We were getting a lot of too many open files errors so I did some research. The consensus was that it was to to with the number of open files. So I did the following: Increased max files in /etc/security/limits.conf soft nofile 100000 hard nofile 100000 Rebooted the server Checked the limits were valid for the user which was to run the process [app_admin@xxx ~]$ ulimit -Hn 100000 [app_admin@xxx ~]$ ulimit -Sn 100000 Monitored open files on the server using the lsof command What I observed was when the total open files reached circa 13000 and tomcat had around 4500 open files the error reappeared. I am confused. I thought it would have resolved the problem but clearly I don't fully understand the root cause and also how to set the parameter correctly. To (maybe) help I have not modified the server.xml file for Tomcat (although I'm tempted). I don't want to start fiddling with that and make things worse. I'm more than happy to share any more information if someone can give me some hints on where to start looking.

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• HP Pavillion DV6500 recovery disk failure

  - by Scott W

  I recently attempted to re-install Windows Vista on an HP Pavillion DV6500 using the factory recovery DVD's, but encountered a strange problem. When the recovery disk attempted to reformat the hard disk, it failed at 22%. The error message provided was not very informative, just the error code "0x400110020000 1005". A google search turned up some people with a similar problem who asserted that HP has been know to ship corrupted recovery DVDs. The recovery disk did manage to reformat the the recovery partition before failing though, so recovering from the partition is no longer an option. It would be possible to reinstall from an off-the-shelf retail copy of Vista and then pull the drivers from HP's website, but I don't have access to a copy of Vista, and it would really be outrageous to have to purchase a new OS when I have a perfectly valid license already. Thought about biting the bullet and upgrading to Windows 7, but my understanding is that without Vista installed I'd be unable to use the upgrade version, and be forced to purchase the more expensive non-upgrade retail copy (!). Can anyone suggest a possible solution to this Catch-22? I've run out of ideas.

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• ntop to analyse bandwidth usage on multiple ASA 5505

  - by dunxd

  I have set up a netflow server at our data centre, which is connected via VPN to ~40 remote offices using Cisco ASA 5505. The aim is to analyse usage data and find out exactly how the remote connections are being used. I followed through http://techowto.files.wordpress.com/2008/09/ntop-guide.pdf to set up ntop and https://supportforums.cisco.com/docs/DOC-6114 to set up the ASAs. I can see from the Plugin Netflow Statistics page that netflow packets from my ASAs are being received - the counter is increasing. However, I am not seeing any breakdown on the Global Traffic Statistic page after switching to the Netflow interface. I'm just seeing a pie chart showing 100% traffic for eth0. The interfaces and documentation are a little hard to follow so I am not sure I have got things configured correctly. When setting up my NetFlow-device.2 I can specify Virtual NetFlow Interface Network Address - the web UI says This value is in the form of a network address and mask on the network where the actual NetFlow probe is located. is this a Network address (e.g. 192.168.0.0/24) or an actual host IP address (192.167.0.1/24)? If that should be a network address, is this the network in which one of my ASAs is or the network in which my ntop server is? If a host IP address, is this the IP address used by eth0 on my ntop server, the IP address of an ASA, or something else? Do I need a separate virtual interface for each ASA I am collecting netflow data from? Any guidance would be greatly welcome.

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• Vanishing Windows Desktop Shortcut Keys

  - by Henry Keiter

  The Situation Like you, I have many applications that I like to open. I've set up keyboard shortcuts for the most common, by placing a link on the desktop and setting its Shortcut Key property: This is all fine and dandy, most of the time. When I want to bring up the GIMP, I press Ctrl+Alt+G and the GIMP launches. Lovely. The Problem Sometimes--perhaps once a month per desktop shortcut--the shortcut key assignment simply vanishes. I press Ctrl+Alt+G and nothing happens, so I go check the shortcut and see that lo and behold: nothing is there. This happens regularly to all my shortcuts (not all at once). It doesn't matter what keys I assign, and there doesn't seem to be any correlation with particular applications being open or anything of that sort. This has happened on every Windows XP machine I've ever used with any regularity. Obviously what makes this issue particularly obnoxious is that it's not easily reproducible. I have searched long and hard for a solution for (or at least acknowledgement of) this problem, to no avail, so hopefully you guys know something that I don't. I did find this question, where the answers are all basically "use a third-party app", but as far as I could tell that was a slightly different issue, related to Explorer being busy. If the solution for this turns out to be the same, fine, but I'd prefer a native fix if at all possible. Note: I've tagged this with Windows in general because I seem to remember it happening on Windows 7 as well as XP, but I rarely notice it because I use the start-menu search in preference to desktop shortcuts.

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• Two parts: linux startup script to connect to bluetooth and cron to keep it connected

  - by D.R.

  I have a mini bluetooth keyboard and a Raspberry Pi running a Debian-based distro. I know the MAC address of the keyboard but for this question, let's just use AA:BB:CC:DD:EE:FF. Right now I have to have a wired keyboard connected as well as my bluetooth dongle for the mini-keyboard and on the wired keyboard, I have to run the following when the device boots up: sudo hidd --connect AA:BB:CC:DD:EE:FF If the device goes idle for too long, then the bluetooth disconnects and I have to pull out my wired keyboard and retype that same command. What I'm looking for it a way to have that command run at startup and a way to sense if it gets disconnected so that it will auto reconnect. The annoying thing is that they keyboard has to be in pairing mode (even though it has already been paired) when I run that command, otherwise it tells me the host is down. So perhaps the script needs to prevent it from disconnecting due to inactivity, otherwise I'll have to put it back in pairing mode to reconnect. So to recap: - A script to connect at startup (I can make sure to put the keyboard into pairing mode before turning it on) - A script to prevent it from disconnecting (maybe some sort of signal to send to it every 60 seconds or something?) Any help with this is greatly appreciated! StackOverflow is always the best place to find answers to weird questions! I've been searching long and hard for an answer, but finally had to resort to coming here! Thanks!

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• Distorted Sound

  - by BCable

  I have my laptop hooked up to my receiver for sound output. I hear a hissing/crackling background sound that is really loud and hard to just ignore (but possible). When my 360 is connected, the sound comes out perfect, so it's just with this laptop. Previously, I thought it was just my laptop and just submissively just let it slide. I just bought a brand new laptop though and it's doing the same thing. I have found out more information now that I know it's not my laptop. I have used this laptop in similar environments where it worked just fine (different speakers). I have bought a new cable to connect to my receiver and it did nothing (headphone jack to RCA). I tried different ports on the receiver (Video 1-3) and it always happens. I have discovered that the sound goes away if I unplug my laptop (so it's running on battery). Because of the last one, I tried plugging my laptop into a different outlet across the room and it's STILL doing it. Doesn't matter if I boot to Linux or Windows, yet my phone (Android G1) doesn't cause this sound using the exact same cable. Any ideas? I'm out of them! Thanks!

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• Slow boot for OS and external devices

  - by Derek Van Cuyk

  I have been having this problem intermittently but as of yesterday, it has become more consistent. It originally started when I rebooted my PC at home and the OS (Windows 8) sat in a loop appearing to do nothing while loading. I figured since this was a new installation, that something may have just become corrupted and I decided to reinstall. So I tried to boot off of the thumb drive which had the installation iso and encountered pretty much the same issue. Same with the DVD drive. So, I rebooted once again and left it to load the entire night just to see if it ever would and sure enough this morning, Windows had finally loaded. Authentication had the same roblem albeit not quite as long (took about 5 minutes to authenticate). However, once I was in, everything appeared to be working fine and as quick as normal with the exception of when I tried to scan the C drive for any errors, which ran unbearably slow (45 minutes and before I left for work and was not finished scanning a 64GB SSD drive). I mention that I have had this issue but never when loading the OS. Before it occurred when trying to install windows 7 from a different DVD drive than the one I have now. It took me about 3 hours to do it since I had to wait sometimes 30+ min for each step to finish processing. Does anyone have an idea as to what can cause this? I am assuming it is the motherboard since it is responsible for communication with all the devices I'm having issues with but I cannot find anyone else who has had a problem like this and don't want to drop more money on a MB if it isn't the problem. Hardware: Motherboard: Asus M4A78T-E Socket AM3/ AMD 790GX/ Hybrid CrossFireX Hard Drive: Kingston SSDNow V+180 64GB Micro SATA II 3GB/S 1.8 Inch Solid State Drive SVP180S2/64G Optical Drive: Samsung Blu-Ray Combo Internal 12XReadable and DVD-Writable Drive with Lightscribe SH-B123L/BSBP Thanks, Derek

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• The USB mouse sticks in Windows 7 after automatic attempt to fix the boot

  - by chelder

  Avast Antivirus asked me to delete a probable virus and to restart to perform a checking. I had to stop the checking at the middle of the procedure as I needed the computer. It was imposible to turn off the computer pushing the power button (as it entered in suspension mode, no matter how long I kept pushed the power button). I removed the battery as the only way to restart the computer. Windows 7 said that there is a problem to iniziate Windows. Windows 7 tried to fix the problem without success. Windows 7 started after that though. Everything is OK but the USB mouse. The USB mouse sticks and freezes each couple of seconds more or less. The tactile mouse (PS2) works well. I googled for solutions but the posible solutions didn't work for me. What happened? How could I fix it without formatting and reinstalling everything? UPDATE: this is what I did: Change the mouse from one usb port to another Test another mouse Set the number of cores of the CPU manually with msconfig Power management: not disable usb ports Check hard disk errors

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• NVIDIA GeForce GT750M drivers for Ubuntu 13.10 on iMac

  - by Eugene B

  I have just got a new iMac 14.3 with 21.5' display. It has Intel i7 processor and NVIDIA GeForce GT750M graphics card with GPU (Device ID: 0x00fe9). I have installed Ubuntu 13.10 on it (dual boot with refit). Everything works fine apart from graphics. It is clear that graphics' not accelerated, and there are no drivers suggested in the "Additional drivers" section. I have tried to Install nvidia drivers from the repository. Download nvidia drivers and install them manually. Follow instructions here. Follow instructions here. Follow instructions here. Install bumblebee. Play around with xorg.conf file. Blacklist nouveau. As you may guess, nothing worked. The weirdest thing is, that when I boot from a LiveCD, it picks up screen resolution and all the rest correctly, though when I install the system to my Hard Drive it clearly does not have proper drivers. Does anyone have any suggestion what to do?

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• PDU management interface has low availability - product flaw or isolated issue

  - by DeanB

  Our colocation provider has supplied us with APC AP7932 switched 0U PDUs as part of several cabinets they provide us. We have had a lot of trouble with the network management aspect of these PDUs, which I'll describe below. We are moving to cage space in the same datacenter, and plan to provide our own PDUs, so I'd like to determine which enterprise-grade PDUs have been reliable performers from a remote management perspective. Our colo-provided PDUs are configured to support management via an SSL web UI and via telnet. We updated the firmware on all of them to the current version as of NOV2011. They respond to pings reliably, and we have no reason to suspect a network layer issue. However, we experience frequent hangs, timeouts, disconnects, and general unavailability from the embedded management host in all of the PDUs. We occasionally have to restart the microcontroller on the PDU to recover from what appears to be an occasional hard fault. The outlets stay powered (thankfully), but the management aspect is so unreliable that it has become an ops liability - we can't be confident that we could get into the PDU to power cycle a host if we needed to. We have 3 PDUs that all exhibit identical behavior. There are many manufacturers of enterprise-grade 0U switched PDUs, all with comparable features. If I looked at the datasheet for our current PDUs, they would appear to be a good fit -- only with the benefit of suffering through using them do we know to avoid them. I'd like to avoid picking a PDU that looks fine on paper, but has similar reliability issues. What has been others' experience with switched PDUs? Is this level of flakiness normal?

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• Install PHP mcrypt on Red Hat 4

  - by Chris

  I'm having a very hard time getting mcrypt for PHP installed on a Red Hat 4 server. I've downloaded the rpm but it tells me: error: Failed dependencies: php-common(x86-32) = 5.4.7-2.fc18 is needed by php-mcrypt-5.4.7-2.fc18.i686 rpmlib(FileDigests) <= 4.6.0-1 is needed by php-mcrypt-5.4.7-2.fc18.i686 libc.so.6(GLIBC_2.4) is needed by php-mcrypt-5.4.7-2.fc18.i686 libltdl.so.7 is needed by php-mcrypt-5.4.7-2.fc18.i686 rtld(GNU_HASH) is needed by php-mcrypt-5.4.7-2.fc18.i686 rpmlib(PayloadIsXz) <= 5.2-1 is needed by php-mcrypt-5.4.7-2.fc18.i686 So when I try to install one of those packages, they also require another 8 packages. So I'm diving into dependency hell here. Now if I try to compile mcrypt from source, this is what I get: checking for libmcrypt - version >= 2.5.0... no *** Could not run libmcrypt test program, checking why... *** The test program failed to compile or link. See the file config.log for the *** exact error that occured. This usually means LIBMCRYPT was incorrectly installed *** or that you have moved LIBMCRYPT since it was installed. In the latter case, you *** may want to edit the libmcrypt-config script: no configure: error: *** libmcrypt was not found But I was able to install libmcrypt from an rpm packages successfully. Any suggestions? Also, I cannot use up2date as it requires an active paid account from Red Hat and since the staff has changed rather rapidly in the last year where I work, no one knows if there even was any support accounts.

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