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• Ubuntu 12.04 froze during update, won't boot

  - by Cichol

  I've recently installed Ubuntu 12.04 on my laptop, and every time i tried to update it, it would freeze for a few seconds, and tell me that the updates could not be downloaded. After many, many tries I managed to get them downloaded, but then in the middle of installing them, it froze. Completely. No mouse movement, no blinking lights, no nothing. After a few hours of letting it sit there, I finally hit the power button to do a hard reset, and now when I select Ubuntu on the boot screen (Dual-boot with Windows 7), I get a blank purple screen, and then nothing. Another freeze. I've tried getting into the console, but no command I input has any visible effect. I have a ton of music stored on the partition it's in, so I'd really rather not have to reinstall. My specs, to the best of my knowledge: Clevo Corp model B7130 (Sager custom) CPU: Intel Core i5 @ 2.53gHz (4 CPUs) Graphics Card: Nvidia GeForce 425m 4096 MB RAM Drivers: Whatever comes with the download of 12.04. As a side-note, I installed Ubuntu via the Windows Installer program (wubi). Does that make a difference?

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• Datacenter IP Addressing and DNS Management

  - by user65248

  Hello everyone Basically we are setting up a small Datacenter, about 300 amps power and max 50 racks, Im saying these coz I wanna u imagine the size and requirements, I have studied networking mostly Microsoft and Windows based systems , but I cant get how the IP addressing and DNS management and configuration works in a Datacenter , and unfortunately I have to setup everything by myself but defe we will have some staff to do some job. Now my questions Datacenter IP Addressing Suppose we have got a block of 200 IP addresses from our ISP, How can I manage these block of IP addresses, is there any software out there to simplify this I heard that using DHCP server in a datacenter is not recommended, otherwise what would u say about MS DHCL server ofc considering we need to have backup serversin case of failur How can I assign a block of IPs to a specific rack, I know with different software and management its different but Im asking how it is done normally IP addresses are exposed to the whole network, what if a customer try to use an IP address and is not assigned to their server or rack , how can I prevent this or how can I track the IP usage DNS Management Im goin to setup at least two servers for our DNS servers, I know nothing about Datacenter DNS system, but I have configured DNS server in normal networks and also for webservers, Now I wanna know What exactly needs to be done for a DNS in a datacenter that is not done for normal networks. How can I configure PTR records why cant I configure PTR records on my webserver side DNS server and it should be done on datacenter DNS server , I mean what is the difference in DC DNS servers that allow us to to so , I know the question is very silly and simple but Im confused Is there any software outthere to allow doing the whole thing, I mean automatically add records to the DNS and also managin IP addresses !? Thanks in advance

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• Audio card with built-in ground isolator?

  - by Dave Jarvis

  What audio cards would you recommend that eliminate hum, and hard-drive & mouse movement signal interference? Hardware components: Motherboard. Asus P5Q SE Audio. Realtek ALC 1200, 8-Channel High-Definition Audio CODEC (on board) Harddrive. WD Caviar 320 GB Mouse. Logitech Marbleman USB Mixer. Mackie d.4 Pro Amplifier. Sonance Sonamp 260 All components are plugged into the same Monster Power HDP 910 powerbar (does not help eliminate noise). I have no other components plugged in. The computer uses a Monster iCable 1000 to go from mini (on board audio) to RCA (mixer). I have moved the cable as far from other cables as possible. A ground loop isolator between the mixer and on board audio eliminates all noise. I would rather not use a ground loop isolator; an internal audio card that is Linux-compatible (Kubuntu) would be ideal. Suggestions?

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• SYS-5016T-MTFB will not POST without manual assistance (Motherboard: X8STi-F)

  - by Dan

  I have a Supermicro 5016T-MTFB 1U server which I am in the process of setting up, but it has a really strange problem. When the system is powered on it will not POST until I press the reset button a few times, followed by pressing the delete key on the keyboard to "wake it up". If I power it on and do nothing, the fans spin up but nothing else happens at all. After pressing the reset button once, the red "overheat" light comes on and blinks which is supposed to indicate a fan failure - but all the fans are working. Pressing reset again usually stops the blinking, and the system starts the normal POST routine but it will not actually get to the bios screen unless I press delete. If I don't press delete, it just continues to hang. After pressing delete it will take me into the bios setup screen, if I exit without saving changes I can boot the system normally. I was able to successfully install Linux with no trouble...but upon rebooting the same problem happened again. This board has integrated IPMI which I thought was the problem, so I disabled it via the jumper on the board. Did not help. Each time this system powers on, it goes on for a second, then turns off again for another second, then turns back on again. I don't know why it does that. Here is what I put in the system: 1 x Xeon E5630 (Nehalem) 80W TDP (it's not overheating, CPU temps stay under 40 degrees C) 2 x Kingston 2GB x 3 DDR3-1066 Memory ECC, unbuffered, unregistered (kvr1066d3e7sk3/6g) 1 x Intel X25-M 160 GB 2 x Western Digital RE3 1TB

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• Network Explorer Intermittently Fails to Display all Computers in Work Group

  - by graf_ignotiev

  I run a small computer lab of 10 computers and occasionally, when using the network explorer (a.k.a Network Browser) some or all of the remote computers will fail to appear. If I try to access a remote computer by its name I get an unspecified error (code 0x80004005), but I am still able to access it with the computer's IP address. The strangest part is that the problem will inexplicably go away after waiting awhile. Each computer is running Windows 7 x64 Enterprise and has identical hardware, software and configuration. They are all on the same subnet and in the same workgroup. I've spent days researching the problem and have tried the following solutions: Updated the BIOS, chipset and network adapter drivers Changed Power Settings in Network Adapter Properties so that the computer will not turn it off Disabled the Computer Browser service Changed the DHCP node type to broadcast Reviewed the Event Viewer logs Steps 3 and 4 have seemed to help the problem a little bit, but not completely. I'm beginning to suspect that the problem might lie with our router which is a ZyXEL ZyWALL 2WG, as the packets sent by Network Discovery may not be returning in time, but I wanted to get some perspective in the issue before I went any further.

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• Virtual (ESXi4) Win 2k8 R2 server hangs when adding role(s)

  - by Holocryptic

  I'm trying to provision a 2k8r2 Enterprise server in ESXi4. The OS installation goes fine, VMware tools, adding to domain, updates. All the basic stuff before you start adding Roles and Features. I've had this happen on two attempts already, and I'm not sure where the problem might be. I don't think it's hardware, because I have another 2k8r2 Standard server that's running fine. The only real difference is the install media. The server that's working was installed using a trial ISO and license. The one I'm having problems with is a full MAK installation. When I go to add a Role (the last case was Application Server) it gets all the way to "collecting installation results" before it hangs. CPU utilization in the vSphere client shows little spikes of activity with flatlines inbetween, but the whole console is locked up. The only way to release it is to power off and bring it back up. When you go to look at the added roles after bringing it back up, it shows that it is installed, but I don't trust that something didn't get wedged in all of that. The first install I did was with Thin Disk provisioning. The second attempt was with regular disk provisioning. In both cases 4GB of RAM, 2 vCPUs. VMware host is a HP Proliant DL380 G6, RAID-1 OS, RAID-5 data volume. 12 GB RAM. Has anyone else had this problem, or know where I should start poking around?

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• Why does just splitting an Ethernet cable not work?

  - by Sin Jeong-hun

  I thought the Ethernet is logically a one-line communication bus (for argument's sake, I am excluding hubs). All machines attached on the bus hears the same signals and the machines themselves try to avoid collisions by randomly backing off. http://computer.howstuffworks.com/ethernet6.htm If so, why would splitting one Ethernet line from my home router into two and connecting two computers not work? Why do I have to add a switch to it? *What the Internet said would not work. [4 port home router] ------[one Ethernet cable]-----[simple splitter]======[two computers] *What the Internet said I should do [4 port home router] ------[one Ethernet cable]-----[switch]======[two computers] Is this because of the signal degradation (reduced electric current)? Thank you for all the answers! The reason why I did not just use the two ports of my home router is... The 4-port gigabit router is in my room, and I had put a computer in another room (also my room, though). Since a wired network is far more reliable and secure, I had bought a long Ethernet cable and and connected the computer to the router. Now I was thinking about adding another computer to that room. I could buy another long Ethernet cable, but then there will be two cables between the rooms. The one line already is a minor annoyance, so I thought if I could share the one line between the two computers in that room. A switch would work, but it requires power and is a little bit pricey. That is why I wondered why it would not work to simply split the physical Ethernet cable. Apparently I do not completely understand how Ethernet and a switch work. I just have some bit of knowledge I heard in my college class.

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• Windows 7 hangs while loading desktop

  - by Joshua

  I am facing a weird problem. My computer hangs while loading the desktop, and only the background shows up; no icons or bars load. If I power the system on and off about 4-6 times, I may be able to use it normally. The desktop loads normally after rebooting or in safe mode; this only occurs when I start the system normally. I've tried several things to fix it, such as removing all start-up items, but it still doesn't solve the problem. What should I do? I found three major errors in Event Viewer: Source: Microsoft-Windows-DistributedCOM Level: Error DCOM got error "1084" attempting to start the service WSearch with arguments "" in order to run the server: {7D096C5F-AC08-4F1F-BEB7-5C22C517CE39} Source: Microsoft-Windows-DistributedCOM Level: Error DCOM got error "1084" attempting to start the service WSearch with arguments "" in order to run the server: {7D096C5F-AC08-4F1F-BEB7-5C22C517CE39} Source: Service Control Manager Level: Error The Network List Service service depends on the Network Location Awareness service which failed to start because of the following error: The dependency service or group failed to start.

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• linux mint VIA sound issue

  - by user2699451

  So I installed linux Mint 15 "Olivia" 64 bit on my Mecer W550EU laptop I have HD Audio with a VIA chipset charles-W55xEU charles # lsmod | grep snd snd_hda_codec_hdmi 36913 1 snd_hda_codec_via 51018 1 snd_hda_intel 39619 5 snd_hda_codec 136453 3 snd_hda_codec_hdmi,snd_hda_codec_via,snd_hda_intel snd_hwdep 13602 1 snd_hda_codec snd_pcm 97451 4 snd_hda_codec_hdmi,snd_hda_codec,snd_hda_intel snd_page_alloc 18710 2 snd_pcm,snd_hda_intel snd_seq_midi 13324 0 snd_seq_midi_event 14899 1 snd_seq_midi snd_rawmidi 30180 1 snd_seq_midi snd_seq 61554 2 snd_seq_midi_event,snd_seq_midi snd_seq_device 14497 3 snd_seq,snd_rawmidi,snd_seq_midi snd_timer 29425 2 snd_pcm,snd_seq snd 68876 19 snd_hwdep,snd_timer,snd_hda_codec_hdmi,snd_hda_codec_via,snd_pcm,snd_seq,snd_rawmidi,snd_hda_codec,snd_hda_intel,snd_seq_device soundcore 12680 1 snd And my sound card charles-W55xEU charles # aplay -l **** List of PLAYBACK Hardware Devices **** card 0: PCH [HDA Intel PCH], device 0: VT1802 Analog [VT1802 Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: PCH [HDA Intel PCH], device 2: VT1802 HP [VT1802 HP] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: PCH [HDA Intel PCH], device 3: HDMI 0 [HDMI 0] Subdevices: 1/1 Subdevice #0: subdevice #0 and my audio device charles-W55xEU charles # lspci -v | grep -A7 -i "audio" 00:1b.0 Audio device: Intel Corporation 7 Series/C210 Series Chipset Family High `Definition Audio Controller (rev 04)` Subsystem: CLEVO/KAPOK Computer Device 0550 Flags: bus master, fast devsel, latency 0, IRQ 47 Memory at f7c10000 (64-bit, non-prefetchable) [size=16K] Capabilities: [50] Power Management version 2 Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit+ Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00 Capabilities: [100] Virtual Channel Sometimes when I boot up, soundworks, other times it doenst, it is completely random, so far, no-one on xchat linux help or linux mint forums was able to help me, I have always had issues with sound on VIA chipsets I have: sudo apt-get upgrade && apt-get install mint-meta-cinnamon it seemed to help but after 2-3 reboots, the problem came back, btw, everytime I checked, pulse audio is selected to Duplex Audio Input & Output and alsa mixer is always unmuted!

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• [Ubuntu 10.04] mdadm - Can't get RAID5 Array To Start

  - by Matthew Hodgkins

  Hello, after a power failure my RAID array refuses to start. When I boot I have to sudo mdadm --assemble --force /dev/md0 /dev/sdb1 /dev/sdc1 /dev/sdd1 /dev/sde1 /dev/sdf1 /dev/sdg1 to get mdadm to notice the array. Here are the details (after I force assemble). sudo mdadm --misc --detail /dev/md0: /dev/md0: Version : 00.90 Creation Time : Sun Apr 25 01:39:25 2010 Raid Level : raid5 Used Dev Size : 1465135872 (1397.26 GiB 1500.30 GB) Raid Devices : 6 Total Devices : 6 Preferred Minor : 0 Persistence : Superblock is persistent Update Time : Thu Jun 17 23:02:38 2010 State : active, Not Started Active Devices : 6 Working Devices : 6 Failed Devices : 0 Spare Devices : 0 Layout : left-symmetric Chunk Size : 128K UUID : 44a8f730:b9bea6ea:3a28392c:12b22235 (local to host hodge-fs) Events : 0.1249691 Number Major Minor RaidDevice State 0 8 65 0 active sync /dev/sde1 1 8 81 1 active sync /dev/sdf1 2 8 97 2 active sync /dev/sdg1 3 8 49 3 active sync /dev/sdd1 4 8 33 4 active sync /dev/sdc1 5 8 17 5 active sync /dev/sdb1 mdadm.conf: # by default, scan all partitions (/proc/partitions) for MD superblocks. # alternatively, specify devices to scan, using wildcards if desired. DEVICE partitions /dev/sdb1 /dev/sdb1 # auto-create devices with Debian standard permissions CREATE owner=root group=disk mode=0660 auto=yes # automatically tag new arrays as belonging to the local system HOMEHOST <system> # definitions of existing MD arrays ARRAY /dev/md0 level=raid5 num-devices=6 UUID=44a8f730:b9bea6ea:3a28392c:12b22235 Any help would be appreciated.

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• Cooling for a small server room

  - by John Zwinck

  I have a server room about 12 feet square with an unfinished ceiling (exposed ducts and wiring). It houses a few servers (about ten, 1U and 2U) and some networking gear (four 1U switches, three routers, three modems, two cable boxes). With the door closed, it runs around 80 degrees Fahrenheit with half the servers turned on. When I turned on all the servers it reached 86 before I chickened out and propped the door open. The room is adjacent to air-conditioned office space, but does not itself have dedicated air conditioning. The ventilation for this room seems to be limited to one duct coming in at ceiling level, with a powered fan to draw air in, and one duct at ceiling level to allow air to flow out (it seems like it may just go into the drop ceiling cavity in the adjacent room). The adjacent office space stays fairly cool, but I'd prefer not to leave the door propped open all the time. There is both 110v and 208v service in the room, and plenty of power available. But there are no windows, and no floor drains (in a pinch we might be able to run a condensation hose through a small hole we'd drill in the wall to a nearby sink area, but only if absolutely necessary). I've considered portable A/C units, but I'm not sure on sizing and a lot less sure how we would run the exhaust hose(s). I suppose we could point one at the existing room exhaust duct (air return), but substantially modifying the duct is probably a no-no. I've also considered installing a fan box in the door of the room, but I'm concerned that this will only drop the temperature a little. Even right now, with all the equipment on, the room is at 83 degrees with the door open. And the main building A/C turns off daily at 6 PM to conserve energy, so the adjacent room temperature rises at night. How would you cool this room? Let's say the goal is to bring the temperature with everything running from a steady state of around 90 degrees down to 75 (equivalently, to offset the heat produced by ten 1U servers).

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• Debian software raid 1: boot from both disk

  - by bsreekanth

  I newly installed debian squeeze with software raid.The way I did was, as also given in this thread. I have 2 HDD with 500 GB each. For each of them, I created 3 partitions (/boot, / and swap) I selected the hard drive and created a new partition table I created a new partition that was 1GB. I then specified to use the partition as a Physical Volume for RAID. and used for /boot and enabled bootable. Created another partition, which is of 480 GB, and then specified to use the partition as a Physical Volume for RAID. and used for /. Created another partion and used for swap Then RAID configuration: Through Configure RAID menu - create MD device - (2 for the number of drives, 0 for spare devices) Next select the partitions you want to be members of /dev/MD0. I selected /dev/sda1 and /dev/sdb1 (for /boot) Next select the partitions you want to be members of /dev/MD1. I selected /dev/sda6 and /dev/sdb6 (for /) And no RAID for swap partitions 'Finish Partitioning and write changes to disk' -- Finish the rest of the install like normal Everything is ok now, except I am not sure how to test my raid config. When I pull the power of the HDD, it only boots from one disk. I read in some forum that I may have to install GRUB manually on the other. In Debian Squeeze, there is no grub command. Not sure how to make my software raid bootable from both disk. Also, please comment on my steps above. Anything unusual. I configured /boot partitions of both disks to be boot=yes. Not sure whether that is ok. Thanks, Bsr

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• How do I know what hardware to buy to meet my needs?

  - by Darth Android

  While Stack Exchange does not permit shopping recommendations, it doesn't provide any general advice to consider when buying hardware. So, instead of just telling those that ask what to buy that it's not allowed, let's tell them how to figure out what they need. When looking forward to build a computer, how do I know what to buy? How do I find out if a given CPU will be enough for a certain game or application that I want to run? How do I find out if a given graphics card will be enough for a certain game or application? What is important when looking at motherboards? How much memory do I need? How do I know how much wattage I need for a power supply? What size case do I need? What relevant standards do I need to read up on and be aware of? PCI, PCIe, SATA, USB 2.0, USB 3.0, etc... What "gotchas" do I need to be on the lookout for? Please keep responses generation-agnostic to ensure they will be helpful to our future users. :)

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• ASUS M51SE freezes for no apparent reason

  - by Piotr Justyna

  First of all, it's my first question on superuser so please excuse me if it doesn't belong here, a similar one has already been posted here or if I missed some details. My ASUS M51 freezes up. It all started a couple of months ago and I basically forgot about it since I bought a new laptop around that time. This is, however, bugging me since then and I can't explain why it's happening. Let me quickly describe what's wrong. When switched on and running (win 7) it freezes after a couple of minutes of normal usage (or even if I don't actually do anything). By 'freezes', I mean it's like a static image of my desktop was being displayed on the screen. Nothing happens, alt+ctrl+del doesn't help, I basically have to switch it off using a power button. I tried to remove the hard drive and to start the laptop without it. The same here - it freezes on the the initial black loading screen (a couple of minutes after the computer says it can't find the hdd) I tried to remove RAM - the same thing. All fans are spinning as they should. I cleaned the fans using a small paintbrush but it doesn't change anything. The laptop is generally clean and in pretty good physical shape. Well, almost, obviously :). One possible clue I can think of is that the laptop is heating excessively even when it doesn't actually do anything (hdd removed). Do you have any ideas what is the cause of this or what else can I try? Thanks, Piotr

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• can't properly shutdown ubuntu and sound problem on HP mini 311 netbook

  - by Viele

  hi, I recently bought a HP mini 311 netbook. I replaced its harddrive and installed ubuntu 10.04. Since then, I have encountered some very strange problem with its sound and shutdown/reboot. At times, when I start the computer, it will have no sound, on the GUI the sound is at max, but no sound is available. This sometimes also happen after after upgrades, hibernate, and toggling the wireless radio button. Strangely, when the sound is out the device will also refuse to be shutdown. If I shutdown the computer using the GUI, it will simply go back to the log in screen without actually shutting down. If I use "sudo shutdown 0", the computer will hang on the loading screen of the shut down process. I had to force the pc to shutdown by holding the power button down. usually (probably always) after I force a turn-off then start off again. the sound and shutdown become normal. I wonder if anyone have clues regarding to the cause of this problem. This the info about the computer: 1) installed ubuntu 10.04LTS RC, later upgraded to formal released version. 2) cat /proc/asound/version == "Advanced Linux Sound Architecture Driver Version 1.0.21." however, when doing 'alsaconf' the version displayed is 1.0.23 any help is appreciated. Thanks

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• Web hosting for multiple web sites providing system isolation

  - by Justin

  We have a small number of projects where we expect the client will not be maintaining the installed versions of applications we install to power the site (such as Drupal). Given that an important part of security is keeping things updated, we don't want to host these projects on our Plesk-powered dedicated servers that currently host lots of our other client's websites. Our goal is to find a host where we can deploy isolated instances (be these slices, virtual servers, grid servers, etc) for each individual (or groups of 2-3) web sites as we need them. These instances would be completely separate, so that if one web site were hacked it would not impact any other site. Typical hosting requirements: Linux Apache PHP 5 MySQL Supports Drupal Ability to setup a cron task (but we don't need SSH access) Daily backups Virtualized/cloud hosting (we want to avoid shared) Pricing per site is around $25/month OS is patched automatically Some options we have considered but won't work: MediaTemple: Two major data center-wide security incidents and recent downtime foster doubt about this host's technical ability. Slicehost: This would require us to manage the entire server, which we don't want to do. Rackspace Cloud Sites (formerly Mosso): No backup options. Do you have any recommended hosting options for given these requirements?

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• Openldap, groups, admin groups, etc

  - by Juan Diego

  We have a samba server as PDC with OpenLDAP. So far everything is working, even windows 7 can log on to the Domain. Here is the tricky part. We have many departments, each department has it's own IT guys, and these IT guy should be able to create users in their department and change any info of the users in their department. My Idea was to create 2 groups for each department, For example: Department1 and Admins Department1. Admins Deparment1 has "write" priviledges for members of group Department dn: ou=People,dc=mydomain,dc=com,dc=ec objectClass: top objectClass: organizationalUnit ou: People dn: cn=Admins,ou=Group,dc=mydomain,dc=com,dc=ec objectClass: groupOfNames objectClass: top cn: Admins dn: cn=Admins Department1,cn=Admins,ou=Group,dc=mydomain,dc=com,dc=ec objectClass: groupOfNames objectClass: top cn: Admins Department1 member: uid=jdc,ou=People,dc=mydomain,dc=com,dc=ec structuralObjectClass: groupOfNames I dont know if you should make Department1 as part of Domain Users dn: cn=Deparment1,cn=Domain Users,ou=Group,dc=mydomain,dc=com,dc=ec objectClass: groupOfNames objectClass: top cn: Deparment1 member: uid=user1,ou=People,dc=mydomain,dc=com,dc=ec Or just create the deparments like this. dn: cn=Deparment1,ou=Group,dc=mydomain,dc=com,dc=ec objectClass: groupOfNames objectClass: top cn: Deparment1 member: uid=user1,ou=People,dc=mydomain,dc=com,dc=ec I seems that when you use smbldap tools bydefault the users are part of Domain Users even if you dont have them as part of Domain Users in the memberUid attribute, when I use finger they showup as part of the Domain Users group. I dont want the Departments Admins to be Domain Admins because they have power over all the users, unless I am mistaken. I also have trouble with the ACLs. I was trying to create an acl for members of this Admins group, I was trying with this search, but didnt work ldapsearch -x "(&(objectClass=organizationalPerson)(member=cn=Admins Department1,ou=Group,dc=mydomain,dc=com,dc=ec))" I am open to suggestions.

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• How to configure VirtualBox server for performance at home

  - by BluJai

  I currently have two physical Ubuntu Server 10.10 servers at home: one serves as our firewall/router/DHCP/VPN server and the other performs double-duty as a file server and a VirtualBox host for an Ubuntu Desktop 10.10 machine which I use from remote connections (via NoMachine) for many thin-client purposes which are irrelevant to my question. What I'd like to accomplish is to consolidate the two physical machines into one which is a dedicated VirtualBox host (most likely running Ubuntu Server 10.10). Note that I'd like to stick with VirtualBox (if possible) because I'm most comfortable with it and use it on a daily basis at both home and work. Specifically, I plan to have one VM set up as file server, another as the firewall/router/DHCP/VPN (or possibly split those a bit) and a third, which is the only current VM (already VirtualBox), which is the thin-client host. My question comes down to performance and/or recommendations about the file server VM. The file server hosts about 6 terabytes of data across 4 drives. What I'd like to do is use raw disk access from the VM directly to the existing disks. However, I'm curious what performance advantage/disadvantage that would have as compared to using shared folders from the VM host and basically just have the whole drive served as a shared folder to the VM which would then serve it to the other machines on the network. I don't know if virtual disks would even work in this scenario and I certainly wouldn't want a drive to be filled with just a single file which is 1.5 TB (disk image). To add understanding of context, but not to get additional advice, I want to virtualize these machines because I intend to regularly use the snapshot capabilities of VirtualBox for the system disks (which will be virtual drives) of the VMs and I have some physical space/power needs to address (as I mentioned, this is at home).

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• Computer restarts without warning; code bcc116

  - by Robert C.

  Processor: Intel i5 4430 4-Core 4x3Ghz Motherboard: msi h87-g41 Graphics Card: Nvidia GTX760 Power supply: eps-750 cm RAM: 8GB I bought a new assembled gaming PC which worked fine for a few days. Then it started rebooting without warning. After it restarts windows 7 gives me an bbc 116 error code. Apparently it's something to do with my video card, either it overheating or wrong drivers. I've installed the latest driver from Nvidia for my graphics card. Since it's brand new it can't be dust, I'm running it with its lid open to see if the problem persists. I'm also running prime95 now to see if it tells me anything else. Using core temp it tells me that my CPU reaches up to 95° celsius with the blend stress test from prime95. Aaaand it just peaked to 100°. Of course it doesn't reach these temperatures at all while idle/gaming. I'm gonna let prime95 run for a night and to see what happens. Until then does anyone know what I should do next?

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• Backup data rate on Raspberry Pi maxing out at 5 Mb/s. Why?

  - by bastibe

  I set up my Raspberry Pi as a Time Machine, as documented here. At the moment, the Raspberry Pi is connected to my MacBook Pro using a direct Ethernet cable. Also, an external hard drive (laptop drive) is connected to the Raspberry Pi using the USB port. However, backups are pretty slow. Activity Monitor claims that the Network is transferring a very steady 5 Mb/s, where my Time Capsule is transferring up to 8 Mb/s with a lot of fluctuation. The Raspberry Pi self-reports (top) that its CPU is only half-used, with about equal parts afpd, usb-storage and jbd2/sda1-8. Thus, I think that the processing power of the Raspberry Pi does not seem to be the problem here. To me, this looks like there is some kind of bottleneck that maxes out at 5 Mb/s thus potentially having my backups run at less than their potential speed. To the best of my knowledge, this might be the afp-daemon, the usb-bus or the external hard drive. So, my question is, how could I identify the true culprit and what can I do about it?

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• Connection reset by peer: mod_fcgid: error reading data from FastCGI server Issues

  - by user145857

  Help is greatly needed for our server. We are experiencing random "Connection reset by peer: mod_fcgid: error reading data from FastCGI server" errors which cause a 500 internal server error. If the page is then reloaded it loads normally as it should. We are running MPM Worker with mod FCGID to handle PHP. We had APC cache enabled but disabled it recently to see if it would fix the problem, but the random mod FCGID errors are still continuing. No other opcode cache is active now. Our settings are below: <IfModule worker.c> MinSpareThreads 25 MaxSpareThreads 150 ThreadsPerChild 25 ThreadLimit 100 ServerLimit 700 MaxClients 700 MaxRequestsPerChild 0 </IfModule> <IfModule mod_fcgid.c> FcgidMaxRequestLen 1073741824 FcgidMaxRequestsPerProcess 2000 FcgidMaxProcessesPerClass 100 FcgidMinProcessesPerClass 0 FcgidConnectTimeout 300 FcgidIOTimeout 900 FcgidFixPathinfo 1 FcgidIdleTimeout 300 FcgidIdleScanInterval 120 FcgidBusyTimeout 300 FcgidBusyScanInterval 120 FcgidErrorScanInterval 12 FcgidZombieScanInterval 12 FcgidProcessLifeTime 3600 </IfModule> The server is a 64 core 2.1 GHZ 94 GB RAM so it has some power. Some of the fcgid timeout settings are higher because we run large reports which take up to 15 minutes. Any help is greatly appreciated! Just to clarify, the random fcgid errors are occurring when a user clicks a page on our site and the 500 error page loads instantly. This is random and occurrs less than 1% of the time but it is still an issue.

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• My Linux desktop sees my HDMI-connected monitor, but my monitor says "No signal"

  - by hrunting

  I have a Gigabyte H55M-UD2H motherboard and an Acer S271HL monitor. When I connect the monitor to the motherboard via VGA, signal works perfectly. When I connect the monitor via HDMI, the system "sees" the connection, but the monitor receives no signal (the monitor shows a blue box which reads "No Signal" and then the monitor goes into power-saving state). Some fun facts about this: if I hook a different monitor to this box via HDMI, the monitor receives the output without issue (same computer/motherboard, same cable, different monitor) if I connect a different computer to the monitor via HDMI, the monitor receives the output without issue (different computer, same cable, same monitor) no signal is received whether in the OS or in the BIOS there are no BIOS options for controlling video output other than for selection of onboard vs. PCI/PCI-E-based video card (the system has no dedicated video card installed) The box is running Linux, so I have the output of xrandr which shows the connection and the monitor modes detected via DDC: ~$ xrandr --prop Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 8192 x 8192 VGA1 disconnected (normal left inverted right x axis y axis) HDMI1 disconnected (normal left inverted right x axis y axis) Broadcast RGB: Full supported: Full Limited 16:2 audio: auto supported: force-dvi off auto on DP1 disconnected (normal left inverted right x axis y axis) Broadcast RGB: Full supported: Full Limited 16:2 audio: auto supported: force-dvi off auto on HDMI2 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 598mm x 336mm EDID: 00ffffffffffff000472ca028d128022 1c160103803c2278ca7b45a4554aa227 0b5054bfef80714f8140818081c08100 9500b300d1c0023a801871382d40582c 450056502100001e000000fd00384c1f 5311000a202020202020000000fc0053 323731484c0a202020202020000000ff 004c55573044303130383531300a01e5 020324f14f0102030405060790111213 1415161f230907078301000067030c00 1000382d023a801871382d40582c4500 56502100001f011d8018711c1620582c 250056502100009f011d007251d01e20 6e28550056502100001e8c0ad08a20e0 2d10103e960056502100001800000000 000000000000000000000000000000de Broadcast RGB: Full supported: Full Limited 16:2 audio: auto supported: force-dvi off auto on 1920x1080 60.0*+ 50.0 25.0 30.0 1680x1050 59.9 1680x945 60.0 1400x1050 74.9 59.9 1600x900 60.0 1280x1024 75.0 60.0 1440x900 75.0 59.9 1280x960 60.0 1366x768 60.0 1360x768 60.0 1280x800 74.9 59.9 1152x864 75.0 1280x768 74.9 60.0 1280x720 50.0 60.0 1440x576 25.0 1024x768 75.1 70.1 60.0 1440x480 30.0 1024x576 60.0 832x624 74.6 800x600 72.2 75.0 60.3 56.2 720x576 50.0 848x480 60.0 720x480 59.9 640x480 72.8 75.0 66.7 60.0 59.9 720x400 70.1 HDMI3 disconnected (normal left inverted right x axis y axis) Broadcast RGB: Full supported: Full Limited 16:2 audio: auto supported: force-dvi off auto on DP2 disconnected (normal left inverted right x axis y axis) Broadcast RGB: Full supported: Full Limited 16:2 audio: auto supported: force-dvi off auto on DP3 disconnected (normal left inverted right x axis y axis) Broadcast RGB: Full supported: Full Limited 16:2 audio: auto supported: force-dvi off auto on How do I get this monitor to recognize the output from this HDMI socket?

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• Deploying workstations - best practices?

  - by V. Romanov

  Hi guys I've been researching on the subject of workstation deployment for a while, and found a ton of info and dozens different methods and tools, but no "best practice" method that doesn't lack at least one feature that i consider required for the solution to be perfect. I'm currently interested in windows workstation deployment, but if the tools can be extended to Linux, then it's an added value. I want the deployment tools I use to be able to do the following: hardware independent - I want my image or installation to have a minimum of hardware and driver dependency, so that i can use a single image/package for all workstations easily updatable - I want to be able to update my image as easily as possible without redeploying/rebuilding/reimaging all configurations PXE bootable deployment - I want the tools to be bootable off the network so that I don't need a boot cd/DOK. scriptable for minimum human input - Ideally, the tool should run automatically after being booted and perform a "default" deployment (including partitioning) unless prompted otherwise. i.e - take a pc, hook it up, power on, PXE boot and forget about it until the OS is deployed. I found no single product or environment that does all this. Closest i came to is the windows deployment services/WIM image format. I also checked out numerous imaging and deployment tools including clonezilla, ghost, g4u, wpkg and others, but most of them lack the hardware Independence and updatability features. We currently have a Symantec Ghost server setup that does imaging over the network, but I'm not satisfied with it as it has all the drawbacks i listed above. Do you have suggestions how to optimize the process of workstation deployment? How do you deploy them in your organization? Thanks! Vadim.

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• Getting started with webserver clustering.

  - by Ernie

  I work for a small ISP, and we host about 250 domains and all the stuff that goes along with that: DNS, mail, spam filtering, and backups. Currently, we have separate DNS servers (two of them) and mail servers (outgoing mail is actually on the secondary DNS server, but was previously on its own server). In the past, this was done as an insurance measure. The last thing we need is for some doofus (usually yours truly) to hose a server, taking out DNS and mail right along with it, or for spammers to jam our incoming SMTP server, preventing outgoing mail from being sent too. In the past, this was a problem, and our servers were set up the way they are now to combat it. However, clustering solutions like Sun's Cobalt RAQ (in days of olde) and Virtualmin appear to cater to an all-in-one approach, then deal with failures through redundant servers. I have avoided this thus far, but we've been using Virtualmin on our web server for a while now, and I'd like to expand into using it for a high availability cluster. Our networking partner has recently built a datacenter that has eliminated all of our other bugaboos like network, cooling, and power issues, so now the only thing left to go wrong is me hosing a server, which happened earlier this month. One of the bigger reasons we've avoided going this route is because our hardware requirements aren't particularly high. One server easily handles all the sites we host (most of them are flat sites). Also, load-balancing routers tend to be expensive and complicated. All that I'm really expecting to do is building a two-node cluster for redundancy so that when I hose a server (however rare that might be), we're not out for 8-12 hours while I rebuild it. What I need to know is how to get started, and if I'm really in a position to bother with this kind of thing at all.

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• Windows Bluescreen - atikmpag.sys

  - by Mochan

  Information Name: atikmpag.sys bluescreen (BSOD or BlueScreen of Death) Error code: 0x00000116 Appears when: Playing games, watching videos Can be reproduced: Yes Cause: Graphics Card is the main assumption System Specifications Before we begin - I will inform you of my specifications. OS: Windows 7 x64 Home Edition Model: Dell Inspiron 15R Special Edition (aka Inspiron 7520) (Add 2GB of RAM to the model linked) Hard Drive: 1TB CPU: Intel Quad-Core i7 Sandy Bridge (I think) Processor at 2.10GHz (I think it can be clocked to 3GHz?) RAM: 6GB (I think 1 x 4GB and 1 x 2GB) Display: 15.6" HD (1366x768) Graphics: AMD Radeon HD 7500M 2GB Details So now that you know some basics about my computer, I'll get to the problem. Being an Ubuntu user I hardly use Windows, but occasionally I do. Like to run Skyrim and other games incompatible with Linux and WINE. The new Sims 3 Seasons patch is also now not supported. When playing these two games and other ones, theoretically. I have also heard others saying that while watching HD movies and video series it also happens. While watching the bluescreen as it happens, I see it is the 'atikmpag.sys' error. I have not installed much and nothing significant. I think I have downloaded Skyrim, Firefox and The Sims 3. I haven't done much more... since Ubuntu is definitely the best in comparison! (No hate, just a joke :P). I can reproduce it easily (just by running a game for less than a minute). It is always there each time, but it's never at a specific time or anything. So far I have found that it may be caused by lack of power to the graphics card, or it may be damaged or fried. Since I've had the computer for a mere 4 months (and have had other problems with it also). I have contacted Dell but they are useless beyond belief. Anyone with any information, solutions or details are encouraged to share your knowledge, as it would be immensely appreciated.

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