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• Cisco WLAN Controller not pushing out DHCP addresses, what else could it be?

  - by Name

  On our Cisco WLAN Controller web interfaces, in Controller Interfaces, I have made a new interface with these settings: VLAN Identifier 202 IP Address 172.16.202.1 Netmask 255.255.255.0 Gateway 172.16.202.254 Primary DHCP Server 172.16.100.3 Secondary DHCP Server 172.16.100.2 Port: LAG I've also made a new WLAN and assigned it to the above interface. I have saved changes. But our wireless devices, although they seem to authenticate with the WLAN fine, they always get stuck on "obtaining DHCP address", so it seems the WLAN Controller isn't pushing out DHCP addresses to our devices. We do have a DHCP scope for the above in Windows Server 2008 R2 and everything there seems fine. If I connect a device with a static address (e.g. 172.16.202.10), it will connect. Stuck on what to do :(

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• How do I listen to my microphone through my speakers in Windows 7?

  - by Gray Adams

  I've looked about and before you say it: I've used the "Listen to this device" feature built into Windows. The issue is that it is a USB microphone and there is a second delay before when it plays on the speakers, literally making me go quiet because my brain doesn't work too well hearing myself a second after I say something. I use Realtek Audio, so it works differently from the monopolistic Creative sound cards. There is no "What U Hear" or "Line In" levels. It's just "Speakers" and "Microphone". Is there a software I can use that will not have delay? I want to wear nice headphones and still hear myself

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• Hard drive partition size wrong. How do I resize without loss of data?

  - by BreezyChick89

  $ fsck fsck from util-linux 2.20.1 e2fsck 1.42 (29-Nov-2011) The filesystem size (according to the superblock) is 610471680 blocks The physical size of the device is 536870911 blocks Either the superblock or the partition table is likely to be corrupt! It should be 1 partition but it now shows 2.2tb partitioned and .3tb unpartitioned How do I make the first partition correctly be 2.5tb without destroying whatever is in either partition? I did not raid or anything. My devices have been getting repeatedly corrupt by thunderstorms. Looks like people recommend doing something like in other places. sudo resize2fs /dev/sdc1 610471680

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• Require file for mount and also update the file after mount?

  - by Andy Shinn

  I am trying to make sure a directory exists for a mount and then also update the permissions of that directory after the mount happens. I am receiving the following error: err: Failed to apply catalog: Cannot alias File[pre_eos_mount] to ["/var/tmp/eos"] at /etc/puppet/modules/mymodule/manifests/eos.pp:29; resource ["File", "/var/tmp/eos"] already declared at /etc/puppet/modules/mymodule/manifests/eos.pp:47 I would like to do something like this: file { $eos_mount : ensure = 'directory', mode = '1777', owner = 'root', group = 'root', } mount { $eos_mount : ensure = 'mounted', device = $lv_device, fstype = $fstype, options = 'defaults,noatime,nodiratime', require = File[$eos_mount], notify = File['post_eos'], } file { 'post_eos' : path = $eos_mount, ensure = 'directory', mode = '1777', owner = 'root', group = 'root', } What is a way to ensure permissions of a folder after it has been mounted?

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• Is it safe to use an American power adapter in India and Australia?

  - by Stan

  I'm going to India and Australia on a business trip in a couple of days and plan to carry only a tablet instead of my trustworthy laptop (which got dunked in the tub by my oldest - don't ask). The adapter states the following: 100-240V~0.65A, 50/60Hz Output 12V===2A Will it be safe to use the adapter in these countries to charge my device, or do I have to buy new ones there? If the latter, what kind? What else should I take along with me? A surge protector?

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• Video streaming over multi display units

  - by ramdaz

  We have to share video across around 4/8 terminals at a public facility where we need to display live video from within the facility, as well as display messages(advertisements), and also play videos(not live) which need to be controlled centrally from another location. We can do central location handling over Internet, over ssh. What we want to do is connect cameras to a computer, and use the computer to display over multiple display units. We need to do live titling if possible. Once the live local telecast which usually takes about an hour or two a day, we would like to play other videos locally off the PC server. Preferably everything should run off Linux, since budgets are very constrained.... Addendum -- Its not over WAN, it's over a local area. I prefer not using LAN, we would rather use co-axial cable if possible. The reason is if it's LAN, I need some kind of an Networking device, at least a thin client

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• Do not get 'Safely remove' option in Tray for USB storage devices.

  - by blitzkriegz

  I had done some tweaks in service settings (Disabled some as I thought it is not needed). Now, I am not getting the option to safely remove mass storage device when I click the icon on the system tray. I tried enabling some of the services, but it didn't help. Moreover I'm not very sure if this anomaly is because of my changes in services. Any idea how to make those 'safely remove' options appear when I click the USB icon on the tray. Right now nothing is happening when I click.

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• Accessing a broken mdadm raid

  - by CarstenCarsten

  Hi! I used a western digital mybookworld (SOHO NAS storage using Linux) as backup for my Linux box. Suddenly, the mybookworld does not boot up any more. So I opened the box, removed the hard disk and put the hard disk into an external USB HDD case, and connected it to my Linux box. [ 530.640301] usb 2-1: new high speed USB device using ehci_hcd and address 3 [ 530.797630] scsi7 : usb-storage 2-1:1.0 [ 531.794844] scsi 7:0:0:0: Direct-Access WDC WD75 00AAKS-00RBA0 PQ: 0 ANSI: 2 [ 531.796490] sd 7:0:0:0: Attached scsi generic sg3 type 0 [ 531.797966] sd 7:0:0:0: [sdc] 1465149168 512-byte logical blocks: (750 GB/698 GiB) [ 531.800317] sd 7:0:0:0: [sdc] Write Protect is off [ 531.800327] sd 7:0:0:0: [sdc] Mode Sense: 38 00 00 00 [ 531.800333] sd 7:0:0:0: [sdc] Assuming drive cache: write through [ 531.803821] sd 7:0:0:0: [sdc] Assuming drive cache: write through [ 531.803836] sdc: sdc1 sdc2 sdc3 sdc4 [ 531.815831] sd 7:0:0:0: [sdc] Assuming drive cache: write through [ 531.815842] sd 7:0:0:0: [sdc] Attached SCSI disk The dmesg output looks normal, but I was wondering why the hardisk was not mounted at all. And why there are 4 different partitions on it. fdisk showed the following: root@ubuntu:/home/ubuntu# fdisk /dev/sdc WARNING: DOS-compatible mode is deprecated. It's strongly recommended to switch off the mode (command 'c') and change display units to sectors (command 'u'). Command (m for help): p Disk /dev/sdc: 750.2 GB, 750156374016 bytes 255 heads, 63 sectors/track, 91201 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00007c00 Device Boot Start End Blocks Id System /dev/sdc1 4 369 2939895 fd Linux raid autodetect /dev/sdc2 370 382 104422+ fd Linux raid autodetect /dev/sdc3 383 505 987997+ fd Linux raid autodetect /dev/sdc4 506 91201 728515620 fd Linux raid autodetect Oh no! Everything seems to be created as a mdadm software raid. Calling mdadm --examine with the different partitions seems to affirm that. I think the only partition I am interested in, is /dev/sdc4 (because it is the largest). But nevertheless I called mdadm --examine with every partition. root@ubuntu:/home/ubuntu# mdadm --examine /dev/sdc1 /dev/sdc1: Magic : a92b4efc Version : 00.90.00 UUID : 5626a2d8:070ad992:ef1c8d24:cd8e13e4 Creation Time : Wed Feb 20 00:57:49 2002 Raid Level : raid1 Used Dev Size : 2939776 (2.80 GiB 3.01 GB) Array Size : 2939776 (2.80 GiB 3.01 GB) Raid Devices : 2 Total Devices : 1 Preferred Minor : 1 Update Time : Sun Nov 21 11:05:27 2010 State : clean Active Devices : 1 Working Devices : 1 Failed Devices : 1 Spare Devices : 0 Checksum : 4c90bc55 - correct Events : 16682 Number Major Minor RaidDevice State this 0 8 1 0 active sync /dev/sda1 0 0 8 1 0 active sync /dev/sda1 1 1 0 0 1 faulty removed root@ubuntu:/home/ubuntu# mdadm --examine /dev/sdc2 /dev/sdc2: Magic : a92b4efc Version : 00.90.00 UUID : 9734b3ee:2d5af206:05fe3413:585f7f26 Creation Time : Wed Feb 20 00:57:54 2002 Raid Level : raid1 Used Dev Size : 104320 (101.89 MiB 106.82 MB) Array Size : 104320 (101.89 MiB 106.82 MB) Raid Devices : 2 Total Devices : 1 Preferred Minor : 2 Update Time : Wed Oct 27 20:19:08 2010 State : clean Active Devices : 1 Working Devices : 1 Failed Devices : 1 Spare Devices : 0 Checksum : 55560b40 - correct Events : 9884 Number Major Minor RaidDevice State this 0 8 2 0 active sync /dev/sda2 0 0 8 2 0 active sync /dev/sda2 1 1 0 0 1 faulty removed root@ubuntu:/home/ubuntu# mdadm --examine /dev/sdc3 /dev/sdc3: Magic : a92b4efc Version : 00.90.00 UUID : 08f30b4f:91cca15d:2332bfef:48e67824 Creation Time : Wed Feb 20 00:57:54 2002 Raid Level : raid1 Used Dev Size : 987904 (964.91 MiB 1011.61 MB) Array Size : 987904 (964.91 MiB 1011.61 MB) Raid Devices : 2 Total Devices : 1 Preferred Minor : 3 Update Time : Sun Nov 21 11:05:27 2010 State : clean Active Devices : 1 Working Devices : 1 Failed Devices : 1 Spare Devices : 0 Checksum : 39717874 - correct Events : 73678 Number Major Minor RaidDevice State this 0 8 3 0 active sync 0 0 8 3 0 active sync 1 1 0 0 1 faulty removed root@ubuntu:/home/ubuntu# mdadm --examine /dev/sdc4 /dev/sdc4: Magic : a92b4efc Version : 00.90.00 UUID : febb75ca:e9d1ce18:f14cc006:f759419a Creation Time : Wed Feb 20 00:57:55 2002 Raid Level : raid1 Used Dev Size : 728515520 (694.77 GiB 746.00 GB) Array Size : 728515520 (694.77 GiB 746.00 GB) Raid Devices : 2 Total Devices : 1 Preferred Minor : 4 Update Time : Sun Nov 21 11:05:27 2010 State : clean Active Devices : 1 Working Devices : 1 Failed Devices : 1 Spare Devices : 0 Checksum : 2f36a392 - correct Events : 519320 Number Major Minor RaidDevice State this 0 8 4 0 active sync 0 0 8 4 0 active sync 1 1 0 0 1 faulty removed If I read the output correctly everything was removed, because it was faulty. Is there ANY way to see the contents of the largest partition? Or seeing somehow which files are broken? I see that everything is raid1 which is only mirroring, so this should be a normal partition. I am anxious to do anything with mdadm, in fear that I destroy the data on the hard disk. I would be very thankful for any help.

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• Shrink NTFS Partition Windows 2003

  - by Coops

  We have an iSCSI target provided by a CentOS server attached to a Windows Server 2003 Standard box, formatted in NTFS. My question is this - I know we can resize the backend block device fine (LVM et al.), however how do you tell Windows the NTFS filesystem has shrunk afterwards? [note we want to shrink]. I'm imagining a world of pain if it's not done correctly! This is a production box, so ideally we'd like the process to keep the drive mounted and online during the process, but downtime can be scheduled if need be. 90% of what I've found on the subject so far basically involves using the 'ntfsresize' command in Linux to do the job -- but surely Windows can do this itself? Cheers!

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• Keyboard/Mouse not working when windows vista has reached login screen

  - by Jonas

  I currently have a problem with a system (vista home premium, 64bit). USB kbd/mouse will not work when windows has booted/loaded their drivers and Im stuck at the login screen with no working input devices. None of the available boot options after F8 will boot to working kbd/mouse. They work in the bios setup and they seem powered all the way until a few seconds before the login screen. Legacy USB devices is also enabled in the bios. They also work with the recovery dvd, but I am unable to start the device manager to check or uninstall the mouse/kbd drivers. Cant get devmgmt.msc nor devmgr.dll (with rundll32) to work. System repair does not detect the problem and there are no available restore points (it was disabled). Any ideas?

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• Excluding four IP's from a /32 static route

  - by Justin

  I have a Cisco ASA routing a /32 of public addresses (non RFC-1812) through a private link. When the device sees the destination address it selects the private route instead of going out over the public network. This works great but I am now trying to exclude 4 IP's from the private route. Traffic to these addresses should go over the public internet instead of being routed over the private network. Can I just add anothe route for these four IP's or do I have to modify the existing route for the /32?

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• What protocols will/are ISPs use for IPv6 deployment?

  - by rbeede

  Currently ISPs deal out addresses via DHCP for IPv4 dynamic (single) addresses. What protocol will/are ISPs going to use for IPv6 when they can hand a customer an entire /64 (or /48 if they are nice) block? DHCPv6, RA? For ISPs that support true end-to-end IPv6 will they provide gateway devices (similar to cable modem or true DSL bridges for example) that receive border information for that specific customer? I'm just trying to get an idea of how your common residential service customer will have to configure things in an IPv6 Internet (whenever that comes). Will it be something customers are expected to statically configure on their home wireless router? Today with IPv4 I do it like this: Modem (bridge) passes public IPv4 obtained via DHCPv4 from ISP to second device (wireless router). It in turn has its own DHCPv4 service it provides on the internal lan.

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• What does the NTFS encryption protect against?

  - by Ray

  I have encrypted a folder from the (PropertiesAdvancedEncrypt contents to secure data). However when I change my user profile to another one which is also an administrator the folder seems to be accessible as if nothing happened. What exactly does this encryption protect against. I'm looking to encrypt folders that no other user, or another OS or even if the HDD were to be removed and plugged to another device will be accessible. My OS is Windows 7 Ultimate. Any suggestions?

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• Windows 8.1 wants to format a USB stick with an unusual but valid GPT partitioning scheme, why?

  - by DonGar

  I have a USB stick formatted with GPT partitions. Some of the partitions are ext2, some are ext4, some are custom and funky. However, there is also a standard EFI partition, and a standard vfat partition. In Windows 7, both the EFI partition and the standard VFAT partition are visible and mount normally. But Windows 8.1 prompts to reformat the drive when it's inserted. I'm not surprised if Win 8 hides the EFI partition, but I didn't expect it to prompt for reformatting. I want to leave existing partitions alone, but have a VFAT partition that Windows 7, 8, and 8.1 will mount and display normally. Exactly how does Win 8 decide if a device needs to be formatted?

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• Why my USB mouse get suspended after 3 seconds of inactivity?

  - by Vi.

  Mouse's bottom LED goes off after 3 seconds after connection and cursor movements and wheel stops. Pressing any button, reconnecting or resetting USB device resumes it for another 3 seconds (when resumed by pressing button, this event does no go to X). This happens when using any of USB ports. This mouse works well with other computer with Linux. It was working well before. Why can it happen? How to fix it? Update: It happens only if laptop is on battery. Answer: this is caused by powersaving done by laptop-mode-tools. To temporary turn off powersaving one can use for i in /sys/bus/usb/devices/*/power/control; do echo on > $i; done

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• Unable to read DVD on laptop

  - by usabilitest

  I have a DVD disk that I created on an HP laptop. I believe it was setup to be accessed as a USB device. I do not have that laptop any longer and I still would like to access the files on that DVD from my current DELL laptop but it can not open the disk. My guess, the session nwas not closed on the disk and for some reason the new laptop can not read it. My question is, is there any way I can access the files using new laptop, of do I need to find similar HP to try to access the files and possibly close the session? Are there any utilities out there that could help me? Thanks.

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• Windows 8 will only recognize the Blu Ray ROM, if the install disk is present at boot time [migrated]

  - by aceinthehole

  If I have the install disk in the blu ray ROM drive at boot time and subsequently remove the disk and replace it with blu ray media everything functions as I'd expect. However, if I have no media present, or another disk in the drive at boot time, then windows 8 does not seem to recognize that the blu ray player is even present in the computer. It is not present in the 'my computer' screen, device manager does not show the player, and scanning for new hardware yields nothing. It seems that the driver is installed and working as expect, what is it about having the windows 8 install disk in the drive or not that would cause this kind of behavior?

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• How to get audio driver for compaq c700 ?

  - by Leena

  Hi, Initially i have audio driver and its works fine.But some times speaker was clear.So one of my friend installed some audio driver,after that totally disabled the volume. For that reason, i also tried to get audio driver and installed many times.Now i don't know many drivers .inf in my laptop.from device manager i have deleted the audio driver's,below i have attached the screen shot yours kind reference. Please help me to get audio drivers.First, i need to remove the unwanted drivers .inf files from laptop then i have to install the new audio driver. Experts,please suggest me to get audio driver without reinstall the OS. Details: Compaq c700 (i don't know model number) windows xp sp2 p/n : KT188PA#ACJ I appreciate your help.

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• How to get audio driver for compaq c700 ?

  - by Leena

  Hi, Initially i have audio driver and its works fine.But some times speaker was clear.So one of my friend installed some audio driver,after that totally disabled the volume. For that reason, i also tried to get audio driver and installed many times.Now i don't know many drivers .inf in my laptop.from device manager i have deleted the audio driver's,below i have attached the screen shot yours kind reference. Please help me to get audio drivers.First, i need to remove the unwanted drivers .inf files from laptop then i have to install the new audio driver. Experts,please suggest me to get audio driver without reinstall the OS. Details: Compaq c700 (i don't know model number) windows xp sp2 p/n : KT188PA#ACJ I appreciate your help.

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• Windows 7 - all usb devices go to sleep im idle mode

  - by dvdx

  A strange thing happened after a few updates to the system: Intel rapid storage SSD firmware update Intel Ethernet adapter update GPU Intel update When the computer turns off the screen (after 5 min), an unknown time later, all the USB devices stop working. Sound card Mouse Keybord etc. I can't turn them back on, so I can't wake up the screen or do anything except turn the computer off and back on. I checked my power save profile and all is OK there. I changed in the Device Manager, the Allow USB to sleep in all the hubs. How can I fix this??

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• SMTP 25 blocked externally

  - by Jeff

  not sure how to title this question... we run an exchange server with around 80 internal users, all outgoing mail is relayed off a smart host (ISP smtp server) so nothing is actually sent to the world via our server. i wanted to check the server, locally i can telnet to port 25 with no issues and receive the esmtp service ready reply. whenever i do it from an external address (off our local network) i receive unable to connect error 10060. can this cause problems with SPF records, and reverse DNS ? should my exchange server be able to accept smtp requests, requiring authentication before i am able to send from external addresses? if so how... also the exchange server is behind a NAT (asa) device, more than likely thinking that the nat is not configured to route the smtp 25 request to the exchange server.. thanks

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• How to configure linux routing/filtering to send packets out one interface, over a bridge and into another interface on the same box

  - by rj75

  I'm trying to test a ethernet bridging device. I have multiple ethernet ports on a linux box. I would like to send packets out one interface, say eth0 with IP 192.168.1.1, to another interface, say eth1 with IP 192.168.1.2, on the same subnet. I realize that normally you don't configure two interfaces on the same subnet, and if you do the kernel routes directly to each interface, rather than over the wire. How can I override this behavior, so that traffic to 192.168.1.2 goes out the 192.168.1.1 interface, and visa-versa? Thanks in advance!

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• I don't have a free PCI / PCI-e slot, can it be worked around?

  - by Borek

  I need to add a PCI(e) card to a nettop PC that is so small that the card won't fit there (and there is no external alternative like we're used to with external TV tuners). The only ports available are USB and eSATA, is it possible to somehow "dock" the PCI card into some device that would then connect to the PC via USB or eSATA? Or am I out of luck? (I don't mind the solution being visually ugly, I wouldn't even mind opening up the case and soldering some wires in, anything that would work would be great.)

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• Gigabit connection between 2 computers

  - by Alecu

  I am trying to set up a connection between 2 pc's. It's a direct cable connection. The problem that I am having is that the connection isn't gigabit. I know both network cards support gigabit. I checked in the device settings and in one pc I can see in the Speed & Duplex the 1Gbps option but on the other pc I can't see that option despite the fact that the network card is gigabit. I have quite some files to copy from one pc onto another and I really need a good connection between them. I can't really remove the hard drive because it would void the warranty. Could this be a driver issue or a cable issue? On both pc's I have windows 8. The network card on the pc that doesn't have the 1 gbps option is an Atheros ar8161 card.

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• make a computer recognized as a usb flash drive?

  - by user137560

  Is there anyway to make a folder or a partition on a computer (Linux/windows) to act like a flash drive to other computers or devices when connected with a usb cable. For example, I have a windows 7 computer with 2 partitions c and d, then connect that computer to another computer or a smart TV using a USB cable (has to be male to male USB cable) then the other computer or TV recognizes the current computer as a usb device. Is that possible, if not is there any usb switch to connect an external hard drive or flash drive to both the computer and TV without the need to manually switch them (I know about some USB switches but they only support automatic switching with some certain types of printers, not with mass storage) Thanks in advanced! Sam

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