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• How can I make sound over hdmi in kubuntu work?

  - by user32509

  I have used a hdmi cable to connect my lcd (which is connected with my speakers) with my nvida 275 gtx grafic card. I can not get the sound output to work. The hardware itself is working probably - I tested it under windows. Currently I am running Kubuntu 9.10 64 with Nvidia 190.53. The sound output worked fine before I installed the hdmi connection. (German output - i can change it, if you tell me how :)) aplay -l **** Liste von PLAYBACK Geräten **** Karte 0: Intel [HDA Intel], Gerät 0: ALC889A Analog [ALC889A Analog] Untergeordnete Geräte: 1/1 Untergeordnetes Gerät '0: subdevice #0 Karte 0: Intel [HDA Intel], Gerät 1: ALC889A Digital [ALC889A Digital] Untergeordnete Geräte: 1/1 Untergeordnetes Gerät '0: subdevice #0 aplay -L front:CARD=Intel,DEV=0 HDA Intel, ALC889A Analog Front speakers surround40:CARD=Intel,DEV=0 HDA Intel, ALC889A Analog 4.0 Surround output to Front and Rear speakers surround41:CARD=Intel,DEV=0 HDA Intel, ALC889A Analog 4.1 Surround output to Front, Rear and Subwoofer speakers surround50:CARD=Intel,DEV=0 HDA Intel, ALC889A Analog 5.0 Surround output to Front, Center and Rear speakers surround51:CARD=Intel,DEV=0 HDA Intel, ALC889A Analog 5.1 Surround output to Front, Center, Rear and Subwoofer speakers surround71:CARD=Intel,DEV=0 HDA Intel, ALC889A Analog 7.1 Surround output to Front, Center, Side, Rear and Woofer speakers iec958:CARD=Intel,DEV=0 HDA Intel, ALC889A Digital IEC958 (S/PDIF) Digital Audio Output null Discard all samples (playback) or generate zero samples (capture) pulse Playback/recording through the PulseAudio sound server And i disabled mute in kmix an all channels :)

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• Mac OS X will only upload zero-byte files through FTP

  - by tabacitu

  I'm using Mac OS X Lion and i've been having this problem with FTP (any FTP client, mind you. I tried Transmit, FileZilla, Cyberduck and the Terminal, all with the same result) I can browse files in my FTP Client, but when I upload files, the client hangs for a few seconds, then thinks it uploaded the files successfully, but it only creates a new file with one blank line in it. Sometimes, it manages to upload 4-5 lines. It then returns: 226 - Error during read from data connection 226 Transfer aborted But 2xx is a success message. It is not a server issue, since any Windows machine will upload just fine using the same network. Can anybody figure out what the problem is? It renders my mac useless for web development. The problem persists with SFTP and FTP with SSL/TLS. Later edit: Solved! Ok, turns out the problem goes away when I take out my router and connect directly through PPPoE. So the problem is with the router, I thought. But no, the problem is with the mac that connects through a router that connects through a PPPoE and tries to upload using FTP. Pretty specific, I know. The problem is with the MTU (maximum transmission unit). Apparently, mac os x breaks the file into chunks that are too large for the router to send, because the router's MTU was set lower than Mac OS X's. My router's was 1492, which is ok, but my Mac's MTU was 1500, which is unacceptable. I don't even understand why it works directly with PPPoE. Anyway, if you encounter the same problem, this is how you diagnose and fix it: In terminal, run: ifconfig | grep mtu to see what the MTU is for en0 (or en1, mine was en0) If it's 1500, run sudo ifconfig en0 mtu 1300 This should solve it. If so, it may only be until the next restart. You can also change the MTU in System Preferences \ Network \ Ethernet - Advanced \ Hardware

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• Are there any tools to migrate your files, applications, and settings to a new Windows computer?

  - by calbar

  I've decided to upgrade my laptop on a regular basis and one of my main concerns is recreating my entire Windows 7 environment every time I do this. I'm talking toolbar positions, login settings, start menu items, applications and all their customizations... everything but my drivers. It literally takes weeks to fully recreate my working environment, not to mention the risk of user error or just simply forgetting "how I liked it." I'm assuming I won't find something as painless as Apple's Migration Assistant for Windows, but maybe there's something out there that can at least package up your apps and their settings? Bonus points if you can point it to your personal files, too - whatever's the quickest way to get from one machine to the next. I intend to install Windows fresh to remove bloatware on every machine that I buy, then selectively install the drivers I need. Something that accommodates loading my old apps into this newly prepared environment would be ideal. One random point of concern is in regard to application settings that refer to old hardware. I'm not sure if there's anything that can be done about this. If you have any thoughts, feel free to share. Thanks for your help!

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• Faster, secure, protocol/code required for long-distance transfer.

  - by Chopper3

  I've ran into a problem and I'm looking for a new secure protocol/client/server that's faster over a 1Gb/s fibre link - let me tell you the story... I have a pair of redundant, diversely-routed, 1Gb/s links over a distance of around 250 miles or so (not dark fibre but a dedicated point to point link, not a mesh). At the 'client' end I have a HP DL380 G5 (2 x dual-core 2.66Ghz Xeon's, 4GB, Windows 2003EE 32-bit), at the 'server' end I have a HP BL460c G6 (2 x quad-core 2.53Ghz Xeons, 48GB, Oracle Linux 5.3 64-bit). I need to transfer around 500 x 2GB files per week from the client to the server machines per week - but the transfer NEEDS to be secure. Using both iPerf or regular FTP I can get ~80MB/s of transfer pretty consistently, which is great. Using WinSCP or Windows SFTP I can't seem to get more that ~3-4MB/s, at this point the server's CPU is 3% busy while CPU0 of the client goes to ~30% utilised. We've tried editing various TCP window sizes with little success. Both ends are connected to quite low-usage Cisco Cat6509's with Sup720's. I can replace the client machine with a newer machine and/or move it to Linux - but this will take time. Clearly these single-threaded secure Windows clients are introducing too much latency doing their encryption. So a few questions/thoughts; Are there any higher performing secure protocols or client software for Windows that I could try? I'm pretty protocol-gnostic so long as it'll work between Windows and Linux. Should I be using hardware to do the encryption, either in the client or the network parts? If so what would you recommend? I'm not convinced that just swapping the server would be that much faster, the CPU was only at 30% but then again that's higher than I'd have expected given the load - moving to Linux at the client end may be a better idea but would be quite disruptive. Am I missing a trick? Thanks in advance.

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• using i7 "gamer" cpu in a HPC cluster

  - by user1219721

  I'm running WRF weather model. That's a ram intensive, highly parallel application. I need to build a HPC cluster for that. I use 10GB infiniband interconnect. WRF doesn't depends of core count, but on memory bandwidth. That's why a core i7 3820 or 3930K performs better than high-grade xeons E5-2600 or E7 Seems like universities uses xeon E5-2670 for WRF. It costs about $1500. Spec2006 fp_rates WRF bench shows $580 i7 3930K performs the same with 1600MHz RAM. What's interesting is that i7 can handle up to 2400MHz ram, doing a great performance increase for WRF. Then it really outperforms the xeon. Power comsumption is a bit higher, but still less than 20€ a year. Even including additional part I'll need (PSU, infiniband, case), the i7 way is still 700 €/cpu cheaper than Xeon. So, is it ok to use "gamer" hardware in a HPC cluster ? or should I do it pro with xeon ? (This is not a critical application. I can handle downtime. I think I don't need ECC?)

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• How to setup port forwarding from my Webserver (apache) to my Database server (mysql)

  - by karman888

  Hello again guys, and thank you for your help so far. Here is my problem: I have two remote dedicated servers, one webserver that runs apache, and one db server that runs mysql. The apache server is visible on the internet of course, but the second server is only visible to the apache server because they are connected with LAN. I need to connect to the remote mysql server through internet from my home-pc , but only apache server is visible to my home-pc. How can i setup port-forwarding from my apache server to the mysql server so i will be able to "see" the mysql server from my home-pc? This question is a follow-up from my first question Connect to remote mysql server from my application. Problem is that Mysql server is on LAN in which you answered me and helped me a lot by telling me to do "port-forwarding". I looked over the internet, and i cant find a good how-to to do port-forwarding. I'm an experienced programmer, but have little experience on hardware and networks. I can understand though what must be done, so i just need a litle help to sort things out :) I hope you can help me guys, Thank you in advance p.s. machine that Apache is running is on CentOS, mysql server also CentOS. p.s2 webserver runs WebHostManager i dont know if that makes any difference or it can be made easily through this, i just mention it :)

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• RAID degraded on Ubuntu server

  - by reano

  We're having a very weird issue at work. Our Ubuntu server has 6 drives, set up with RAID1 as follows: /dev/md0, consisting of: /dev/sda1 /dev/sdb1 /dev/md1, consisting of: /dev/sda2 /dev/sdb2 /dev/md2, consisting of: /dev/sda3 /dev/sdb3 /dev/md3, consisting of: /dev/sdc1 /dev/sdd1 /dev/md4, consisting of: /dev/sde1 /dev/sdf1 As you can see, md0, md1 and md2 all use the same 2 drives (split into 3 partitions). I also have to note that this is done via ubuntu software raid, not hardware raid. Today, the /md0 RAID1 array shows as degraded - it is missing the /dev/sdb1 drive. But since /dev/sdb1 is only a partition (and /dev/sdb2 and /dev/sdb3 are working fine), it's obviously not the drive that's gone AWOL, it seems the partition itself is missing. How is that even possible? And what could we do to fix it? My output of cat /proc/mdstat: Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10] md1 : active raid1 sda2[0] sdb2[1] 24006528 blocks super 1.2 [2/2] [UU] md2 : active raid1 sda3[0] sdb3[1] 1441268544 blocks super 1.2 [2/2] [UU] md0 : active raid1 sda1[0] 1464710976 blocks super 1.2 [2/1] [U_] md3 : active raid1 sdd1[1] sdc1[0] 2930133824 blocks super 1.2 [2/2] [UU] md4 : active raid1 sdf2[1] sde2[0] 2929939264 blocks super 1.2 [2/2] [UU] unused devices: <none> FYI: I tried the following: mdadm /dev/md0 --add /dev/sdb1 But got this error: mdadm: add new device failed for /dev/sdb1 as 2: Invalid argument Output of mdadm --detail /dev/md0 is: /dev/md0: Version : 1.2 Creation Time : Sat Dec 29 17:09:45 2012 Raid Level : raid1 Array Size : 1464710976 (1396.86 GiB 1499.86 GB) Used Dev Size : 1464710976 (1396.86 GiB 1499.86 GB) Raid Devices : 2 Total Devices : 1 Persistence : Superblock is persistent Update Time : Thu Nov 7 15:55:07 2013 State : clean, degraded Active Devices : 1 Working Devices : 1 Failed Devices : 0 Spare Devices : 0 Name : lia:0 (local to host lia) UUID : eb302d19:ff70c7bf:401d63af:ed042d59 Events : 26216 Number Major Minor RaidDevice State 0 8 1 0 active sync /dev/sda1 1 0 0 1 removed

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• glusterfs mounts get unmounted when 1 of the 2 bricks goes offline

  - by Shiquemano

  I have an odd case where 1 of the 2 replicated glusterfs bricks will go offline and take all of the client mounts down with it. As I understand it, this should not be happening. It should fail over to the brick that is still online, but this hasn't been the case. I suspect that this is due to configuration issue. Here is a description of the system: 2 gluster servers on dedicated hardware (gfs0, gfs1) 8 client servers on vms (client1, client2, client3, ... , client8) Half of the client servers are mounted with gfs0 as the primary, and the other half are pointed at gfs1. Each of the clients are mounted with the following entry in /etc/fstab: /etc/glusterfs/datavol.vol /data glusterfs defaults 0 0 Here is the content of /etc/glusterfs/datavol.vol: volume datavol-client-0 type protocol/client option transport-type tcp option remote-subvolume /data/datavol option remote-host gfs0 end-volume volume datavol-client-1 type protocol/client option transport-type tcp option remote-subvolume /data/datavol option remote-host gfs1 end-volume volume datavol-replicate-0 type cluster/replicate subvolumes datavol-client-0 datavol-client-1 end-volume volume datavol-dht type cluster/distribute subvolumes datavol-replicate-0 end-volume volume datavol-write-behind type performance/write-behind subvolumes datavol-dht end-volume volume datavol-read-ahead type performance/read-ahead subvolumes datavol-write-behind end-volume volume datavol-io-cache type performance/io-cache subvolumes datavol-read-ahead end-volume volume datavol-quick-read type performance/quick-read subvolumes datavol-io-cache end-volume volume datavol-md-cache type performance/md-cache subvolumes datavol-quick-read end-volume volume datavol type debug/io-stats option count-fop-hits on option latency-measurement on subvolumes datavol-md-cache end-volume The config above is the latest attempt at making this behave properly. I have also tried the following entry in /etc/fstab: gfs0:/datavol /data glusterfs defaults,backupvolfile-server=gfs1 0 0 This was the entry for half of the clients, while the other half had: gfs1:/datavol /data glusterfs defaults,backupvolfile-server=gfs0 0 0 The results were exactly the same as the above configuration. Both configs connect everything just fine, they just don't fail over. Any help would be appreciated.

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• Building My First Computer And Suprise It Isn't Working

  - by BobbShots

  I've had many years of experience working on and around computers, but this was my first foray into building one completely from scratch. So far that foray has been a disaster. My rig is completely assembled, and on its maiden power-up plus many power cycles I noticed three things: There were a few beeps from the BIOS POST upon powering up the first time, but I wasn't paying attention completely to the sequence. However, every time after that there are 0 POST beeps, even after taking off all hardware except the CPU and MB. There was no video being sent to the monitor. I run a HDMI cable from my video card to the monitor. The video card was LOUD. My card is a Sapphire Radeon HD 5870 which is known for not only being a powerhouse, but being pretty quiet. A few times during my power cycles it ran a lot quieter, but most of the time it was just super loud. Can anyone provide help for any of these issues? My MB, CPU, and Video Card are: MB: ASUS P6X58D Premium LGA 1366 Intel X58 SATA 6Gb/s USB 3.0 ATX Intel Motherboard CPU: i7 920 Video Card: Sapphire Radeon HD 5870

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• Windows 8 using as a webserver

  - by Jason

  I have a few hobby websites that I currently host on CentOS 6. Apache, mail serving, PHP, MySQL nothing special. In the past I used Windows XP to do this same task, for years, and I was OK. I switched to Linux and for the last few years it has been such a pain. updates break, certain apps only support certain distros without compiling from source. It prevents me from working on my hobby sites more because I am always fixing something. With Windows I locked it down, I run a hardware firewall and packet analyser, kept up on updates and A/V and never had a problem. I dont allow RDC from outside the local LAN, no FTP open, run OpenSSH on an obscure port.. I am considering switching to Windows 8 (since it is a cheaper license now that Windows 7) and running apache, HMailServer, PHP, MySQL, just like my CentOS install. My questions: I am not familiar with Windows 8, can the above be done like XP? No new security restrictions or the OS preventing this from happening? The machine is a Athlon 64-bit X2 with 32GB of RAM. Will Windows 8 see all of the RAM? Technically the machine came with Windows 7, and there is a serial number on it but I am sure I wiped away the Windows 7 recovery partition when I switched to Linux....

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• What are good systems for managing PHP/MySQL infrastructure?

  - by sbrattla

  I work in a company which is about to migrate most applications from in-house custom built Java/Tomcat applications to Drupal. Due to company policies, applications and websites need to run on in-house servers. This means that we need infrastructure for Drupal (PHP/MySQL) applications. This must have been solved a million times already. I believe this is what web-hosting companies does every day. Even though we work on a much smaller scale than web-hosting companies, i assume it would make sense to look at the task as if we're going to have an internal small-scale web-hosting company. This means that the guys in IT operations could be "responsible" for "offering" web-hosting, while developers could use these "services". We have three environments; dev(elopment), test and prod(uction). It would make sense that developers could log in to a system and create/edit/delete dev and test sites as they'd like. Production sites should be available through the same system, but only available to IT ops. We need to work with clusters of web servers, meaning that an administration system should be capable of creating/editing/deleting sites across multiple servers. I know there's no "this is it" answer to my question; but what would be a good place to start to get going with this? Apart from the actual hardware, what would be a good administration system for this?

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• Can't install Hyper-V in Windows 8 Pro. Causes boot loop, pain & suffering

  - by Nick

  Hardware: Intel i7 2600K (not overclocked, SLAT compatible, virt. features enabled in bios) Asus Maximus IV Extreme-Z (Z68) 16Gb RAM 256Gb SSD Other non-trivial working parts Adding Hyper-V is causing a boot loop resulting in an attempt at automatic repair by Windows 8 after the second or third loop: I'm trying to get the Windows Phone 8 SDK installed and I've narrowed down my troubles to the Hyper-V feature in Win8. This is required to run the WP8 emulator and there are no install options to omit this feature. My first attempt completely borked the OS as I did not have a recent restore point or system image, so I did a completely clean install and made plenty of backups/restore points. I skipped the SDK install and went straight for the windows feature add-on for Hyper-V. This confirmed that Hyper-V is the issue as the same behavior resulted. I cannot find any hint in the Event Logs. Cancelling automatic recovery causes the same behavior to repeat. I don't have any other VM products installed. My only recourse is to use a restore point, try something else, install it again, and see what happens. No luck so far. I'm on my 10th attempt here. Any help would be much appreciated.

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• SQL Server Subscriber Migration

  - by SuperCoolMoss

  We're currently have one way transaction replication from a SQL Server 2005 OLTP publisher/distrbituor to two subscribers (one SQL 2005 and the other SQL2008 R2). Replication security is via the SQL Agents' domain service account (the same account is used on all boxes). The SQL2008R2 subscriber is used for BI purposes and hosts a database that has a subset of the Production publisher database tables, with different security and indexes. We need to migrate this BI subscriber to a newer box with more performant hardware. The plan is as follows: Stop replicating to the BI box (continue replicating to the other subscriber). Backup all databases on the BI box (including system databases). Restore all databases (including master in single user mode) to the new BI box (this has SQL Server 2008R2 already installed). Take the old BI box off the network and shut it down. Rename and Re-IP the new BI box to be the same as the old box. Switch replication back on. Are there any flaws in this approach?

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• Linux kernel - can't access sda16 & sda17

  - by osgx

  I can't access sda16 sda17 and higher partitions from my linux. This linux is rather debian (very old); kernel 2.6.23. So, I know that so old linux kernel can't access 16 partitions on single sata disk. What version of kernel should I use to be able access sda16, sda17 etc? I want to update only a kernel, not a whole Linux distribution. PS. There is an WindowsNT kernel which can access and format 16, 17 or higher partition, but my intention is to use sda16 and sda17 from linux (I want Linux Kernel). PPS: dmesg: sd 2:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA sda: sda1 sda2 sda3 sda4 < sda5 sda6 sda7 sda8 sda9 sda10 sda11 sda12 sda13 sda14 sda15 > sd 2:0:0:0: [sda] Attached SCSI disk sd 4:0:0:0: [sdb] xxx 512-byte hardware sectors ... So, there is no mapping of sda16, sda17, ... to sdb. Sdb is the second physical hard drive.

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• CentOS Installation on a Cisco MCS 7800

  - by William

  Hello, I'm having some problems installing CentOS 5.5 Final (i386) Onto my server, a Cisco MCS 7800. The problem comes very early into the installation. When the welcome screen comes up ans gives you the option on how to boot into the DVD, Ill press enter to go into the graphical installer. The Screen will then have a blinking cursor in the top left of the screen and will never go away (I thought that it just might need time but I let it sit for over 5 hours.) I then booted into it again and tried using Linux Text thinking it was a problem with graphical installer. That didn't work, same problem. Then I tried a DVD of RHEL 5 and got the same problem, both graphical and Linux text. At this point i think its a hardware problem. The Server has 2GB of ECC RAM, 1 Pentium 4 CPU @ 3.06GHZ and 2 WD Hard Drives (80GB) Configured for RAID 0. ( Also there is a option in the BIOS for what OS type and that is set to Linux.) If anyone has any idea what is going on, it would be helpful. ================Edit================== ooshro, typing "text" doesn't change a thing. still stuck at the blinking cursor. I looked it up and its really the same thing as typing "linux text", which as stated in the first part of my question, i've already done.

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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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• Creating a Jenkins build farm in a hands-off manner?

  - by user183394

  My colleague and I have set up and run Jenkins on a KVM guest running Ubuntu 12.04 with good results for a while now. We are thinking about deploying a cluster of Jenkins CI hosts in master/slave configuration, with the libvirt slave plugin to keep our hardware count low. Our environment is strictly Linux (CentOS, Scientific Linux, Fedora, and Ubuntu). Both of us are competent in setting up large clusters. We typically use tools like cobbler + a configuration management tool (Puppet, Chef, and alike) to set up a large number of machines (physical and/or virtual) hands off (hundreds of nodes in less than an hour typical). We would like to do the same for nodes running Jenkins. But the step by step guide doesn't give us any clues in this regard. I did see a Multi-slave config plugin. But, being used to dealing with hundreds or more machines completely hands-off, clicking the UI for many machines just doesn't feel right. Can someone point to us a reference that talks about how to set up large cluster of Jenkins CI hosts more in the hands-off way?

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• Offloading backups to secondary network

  - by user1467163

  I'm trying to solve a problem- Currently, we are constantly backing up and have no budget for additional servers. Our production network is still a 10/100 and handles voip, SQL plus our backup traffic, and I'd like to offload the backup traffic onto a secondary network- all of our servers have secondary NIC's that are not in use, and all support gigabit (Our switching hardware does not- a topic for another day). I'd like to move my backups off the production network, but I am having a hard time getting the computers to communicate. I am using a Netgear GS724T switch for the backup network- Chosen for cost and because I have used them extensively on networks saturated with ghosting traffic, so I know it's up to the task. I have defined a VLAN, with ports that are not members of any other VLAN. All traffic is untagged on the VLAN. I have set the servers with 192.168.1.10 and 192.168.1.11 addresses, 255.255.255.0 netmask and I have tried a blank GW, using the local IP of the server 192.168.1.whatever address, and I have tried using the switch's production-side IP as the GW. The machines cannot find each other. DNS addresses are blank because I am going purely by IP for now... Any ideas how to get these machines to talk? they are Windows machines, running Server 2008R2 and 2003R2. Thanks!

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• High-performance Academic Server [closed]

  - by PHPsmith

  Suppose I want to build a server for the university's academic interests. The server is dedicated only to a site, where users (students and lecturers) just view and fill the academic data. But at a time (e.g. once a semester), about 12,000 students will access the site simultaneously. Due to limitation of resources, I have to build the server using free software (except for the operating system Windows 7, the university has been prepared). The hardware is also limited to the usual 4-core computers (eg, Ivy Bridge Intel Core i7-3770) with approximately 16GB of memory (DDR3 1600 MHz), equipped with an RJ-45 port (Intel 82 579 Gigabit Ethernet). With all these limitations, I have to choose the software (web server, database, etc) are appropriate for this purpose is achieved. I decided to create a site in PHP. Please help me by answering the following questions based on your expertise. (my prime candidate software to consider after googling) Web server which is faster & stable & secure, when implemented and optimized for PHP? And why? (nginx) PHP accelerator which is faster & stable & compatible with the selected web server? And why? (APC with Zend Optimizer+) Database which is faster & stable & secure, when implemented and optimized for selected web server and selected PHP accelerator? (MySQL) Are there any errors that have been or will be happening from my condition is? If there is, please enlighten me? Is there anything else I need to know in order to achieve this goal? If there is, please enlighten me? I understand that the performance also depends on the implementation of source-code program, so I assume it will create a site with the best efficiency (e.g. using AJAX).

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• HTC Diamond Touch sync problem

  - by Anders

  I have a HTC Diamond Touch with all my contacts etc. on it. Did however not use it for 6mo while being abroad. When I start the phone now I realize that the touch screen has stopped working. I have tried restarting, soft resetting, shutting it off etc but the touch just wont follow commands. However, I can manage the phone by buttons so it's not frozen. Hence I can get into the phone and watch contacts but not use it to call etc. The problem is, how do I get my 300 contacts out of the thing!? When I'm plugging in the phone, it lets me choose between "Sync with Outlook" and "Use as storage device". It automatically selects "Use as storage device". Now, I cannot choose to sync it with the buttons. I can not change this option afterwards either. In short, I have a phone with all of my contact data and am completely unable to get that out of it. Any tips/help/suggestions? If possible, preferably one that does not including sending the phone to a hardware workshop for three weeks in order to get it fixed:)

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• Why does my computer sometimes not identify my wireless network, or others, that it always connects to?

  - by Emile Erasmus

  I have a vista operating system. Sometimes my computer will not connect to the wireless network (internet) when I start up my laptop. This happens at different places on occasion, and it is very random. It tries to connect, but can not identify the network (it does recognize the wifi name). So at the end it connects, but with limited connectivity. It can not be the hardware because all other computers connect to it fine at the same time. And it happens at different places, mostly home, but sometimes at coffee shops, etc. And then in a day or two when I start up my laptop it is all of a sudden working again. (restart does not solve the problem). I have tried all the trouble shooting options windows offers, restarting the notebook, switch modem on and off, switch laptop wifi on and of, deleted the wifi memory from the laptop and reconnected with the password as if it was the first time, everything. If it does not work at one place it does not mean it won't work at another. Example it won't work at home, then I go to coffee shop and it works, then get back home and it don't. Anyone encountered this before?

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• Recommended Smartphone for Reading PDFs [closed]

  - by mika

  This is as much a software than a hardware question. I use a lot of public transport and perhaps the best way to spend your time there is to read while listening to music. Currently I use Nokia E90 and Adobe Reader LE 2.5 (full version). I was wondering if there are any better alternatives? Requirements: at least 640px wide screen, preferably 800px physical size of the LCD display matters, it should be large, but the phone itself should be as small as possible. This favors touchscreen models PDF reader should be of high quality. It should render most PDFs correctly. Other important features include: full screen mode, keyboard controls for Page Down and page change, multiple zoom levels to adjust to the screen, opening recent documents at the last page read Downsides of E90 + Adobe Reader LE Phone is large compared to the display It is hard to read the display at sunlight Adobe Reader crashes the phone regularly, zoom could have more levels, doesn't remember last page EDIT: Switched to iPhone and GoodReader. Smaller physical screen width compared to E90 is a disimprovement, but other than that I'm happy. GoodReader is the highest quality smartphone PDF reader I've seen so far.

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• why would resetting the Netgear N300 router fix my Win 7 laptop's slow wifi?

  - by rjnagle

  In the past day the wifi download speeds of my Win 7 HP 64 bit laptop have slowed considerably. I am trying to troubleshoot the problem and to figure out whether it's hardware related (i.e., is the Intel(R) Centrino(R) Wireless-N 2230 the problem?) or router related. I have a Netgear N300 router connected to my modem. I'm using Speedtest to measure my speed. First, during my problem state, my ipad can download and upload at normal speeds. It's only my Win 7 laptop which is having problems. Because my ipad downloads at normal speeds, that would tell me that the problem is specific to the laptop (either HW or SW). But when I restarted my Netgear router, the laptop wifi problems disappeared. That just doesn't make sense. If we know that one device can connect properly to the router, why would a laptop have problems? What are some possible reasons why this might happen? Also, during my problem state, I noticed that on my laptop upload speeds were faster than my download speeds. Anybody have a guess about what might cause upload speeds on one device to be faster than another? Is there any actions i could take (or options to enable) so this problem won't occur. (I initially thought my problem might be software related or memory related -- Norton AV or browser plugins. But even after I disabled everything and made sure memory footprint was minimal, the slowdown was still occurring -- and it solved itself altogether when the router was reset).

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• Alfa AWUSO36H 1W dysfunctional driver

  - by BrainStorm

  I recently purchased an Alfa AWUSO36H 1W wireless USB adapter for my notebook, in order to improve signal strength and quality. I'm currently using Linux Mint 11, and the it uses the RTL8187 driver for this adapter, I'm also using a 4dbi antenna, though I have others. The problem is that this adapter does exactly the opposite of what it should, actually my internal Broadcom BCM4313 adapter works way better than the alfa. Browsing is slow, some network applications don't even work, pings against Google.com on the internal adapter runs smooth, while in the alfa it gets like 25% packets lost or more! I'm less them 50 feet from my AP, the internal adapter gets 44/70 link quality, and the alfa gets around 60/70 (iwconfig output). Also the system always sets alfa power to 20dbm(100mw), then I have to do sudo iw set reg B0 to make it 30dbm(1000mw), but apparently no significant change. I've installed wireless-compat drivers, no change either. And worst of all, in Windows 7 it works way more smoothly for browsing, though I couldn't test it properly there. I hope its a driver problem, even if it's a pain to find/compile Linux drivers for a starter, I prefer it to a hardware problem where I would need to buy another adapter, since I have no money left (except for the cantenna pieces).

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• Disk Activity Alert Windows SBS 2003 on Dell PowerEdge 830 with Raid

  - by Ron Whites

  Background: I have a Dell PowerEdge 830 Server running Windows SB Server 2003. It has 4gbs of RAM and a ATA CERC SATA 6CH controller with 3 160gb drives in a Raid 5 configuration. The Problem I am seeing Admin ---"Disk Activity Alert on Server" emails These often occur when disk backups, de-frag or high disk usage is going on. Generally the server isn't over stressed. The Disk Alert emails say in part ... The following disk has low idle time, which may cause slow response time when reading or writing files to the disk. Disk: 0 C: F: D: Review the Disk Transfers/sec and % Idle Time counters for the PhysicalDisk performance object. If the Disk Transfers/sec counter is consistently below 150 while the % Idle Time counter remains very low (close to 0), there may be a problem with the disk driver or hardware. The Questions I have: With what utility can I review the Disk Transfers/sec and Idle Time? It appears there is no utility for that on the server! I think I may need to download a very large (two DVD) Dell "OpenManage" utility to be able to monitor the raid system and see what is a problem is that true?

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