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• Change Linux console screen blanking behavior

  - by quack quixote

  How do I change the screen blanking behavior on Linux virtual terminals? For example, if I switch to a VT from X, login, and leave the system alone for 5 minutes or so, the screen will blank like a screensaver. It comes back with any keypress, like a screensaver. Mostly I just want to change the timeout, but I'm also interested in other settings. If it helps, one of my systems is running Ubuntu 10.04 with the stock graphics drivers. fbset shows the console using the radeondrmfb framebuffer device.

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• Build and migrated to software raid (mdadm) on GPT disk, now can't assemble array

  - by John H

  mdadm, gpt issues, unrecognized partitions. Simplified question: How do I get mdadm to recognize GPT partitions? I have been attempting to convert/copy my Ubuntu 11.10 OS from a single drive to software raid 1. I have done similar in the past, but in this case, I was adding in a drive that has been configured for GPT and I tried to work with that without fully looking into the implications. Currently, I have a non-booting mdadm RAID 1 array of /dev/md127 (the OS assigned that and it keeps picking up). I am booting off of live USB keys, currently System Rescue CD from sysresccd. While gdisk and parted can see all the partitions, most of the OS utilities do not, including mdadm. My main goal is just to make the raid array accessible so I can get pull the data and start fresh (without using GPT). /dev/md127 /dev/sda /dev/sda1 <- GPT type partition /dev/sda1 <- exists within the GPT part, member of md127 /dev/sda2 <- exists within the GPT part, empty /dev/sdb /dev/sdb1 <- GPT type partition /dev/sdb1 <- exists within the GPT part, member of md127 History: POINT A: The original OS was install on sda (actually /dev/sda6). I used a the Ubuntu live usb to add sdb. I got warning from fdisk about GPT so I used gdisk to create a raid partition (sdb1) and mdadm to create a raid1 mirror with a missing drive. I had many issues getting this working (including being unable to get grub to install) but I eventually got it to boot using grub on sda and /dev/md127 off of sdb. So at point A, I had copied my OS from sda6 to md127 on sdb. I then booted into a rescue mode and attempted to get a bootloader onto sdb, which failed. I then discovered my mistake: I had installed the raid onto sdb instead of sdb1, essentially overwriting the sdb1 partition. POINT B: I now had two copies of my data- one on md127/sdb, and one on sda. I destroyed data on sda and created a new GPT table on sda. I then created sda1 for the raid array, and sda2 for a scratch partition. I added sda1 into the raid array and let it rebuild. md127 now covered /dev/sdb and /dev/sda1 as fully active and synced. POINT C: I rebooted onto linux rescue again and was still able to access the raid array. I then removed /dev/sdb from the array and created /dev/sdb1 for the raid. I added sdb1 to the array and let it sync. I was able to mount and access /dev/md127 without issues. Once it completed, both /dev/sda1 and /dev/sdb1 were GPT partitions and actively syncing. POINT D (current): I rebooted again to test if the array would boot and grub failed to load. I booted off of my live thumb drive and found that I can no longer assemble the raid array. mdadm doesn't see the required partitions. -- root@freshdesk /root % uname -a Linux freshdesk 3.0.24-std251-amd64 #2 SMP Sat Mar 17 12:08:55 UTC 2012 x86_64 AMD Athlon(tm) II X4 645 Processor AuthenticAMD GNU/Linux === /proc/partitions and parted look good: root@freshdesk /root % cat /proc/partitions major minor #blocks name 7 0 301788 loop0 8 0 976762584 sda 8 1 732579840 sda1 8 2 244181703 sda2 8 16 732574584 sdb 8 17 732573543 sdb1 8 32 7876607 sdc 8 33 7873349 sdc1 (parted) print all Model: ATA ST31000528AS (scsi) Disk /dev/sda: 1000GB Sector size (logical/physical): 512B/512B Partition Table: gpt Number Start End Size File system Name Flags 1 1049kB 750GB 750GB ext4 2 750GB 1000GB 250GB Linux/Windows data Model: ATA SAMSUNG HD753LJ (scsi) Disk /dev/sdb: 750GB Sector size (logical/physical): 512B/512B Partition Table: gpt Number Start End Size File system Name Flags 1 1049kB 750GB 750GB ext4 Linux RAID raid Model: SanDisk SanDisk Cruzer (scsi) Disk /dev/sdc: 8066MB Sector size (logical/physical): 512B/512B Partition Table: msdos Number Start End Size Type File system Flags 1 31.7kB 8062MB 8062MB primary fat32 boot, lba === # no sda2, and I double the sdb1 is the one shown in parted root@freshdesk /root % blkid /dev/loop0: TYPE="squashfs" /dev/sda1: UUID="75dd6c2d-f0a8-4302-9da4-792cc7d72355" TYPE="ext4" /dev/sdc1: LABEL="PENDRIVE" UUID="1102-3720" TYPE="vfat" /dev/sdb1: UUID="2dd89f15-65bb-ff88-e368-bf24bd0fce41" TYPE="linux_raid_member" root@freshdesk /root % mdadm -E /dev/sda1 mdadm: No md superblock detected on /dev/sda1. # this is probably a result of me attempting to force the array up, putting superblocks on the GPT partition root@freshdesk /root % mdadm -E /dev/sdb1 /dev/sdb1: Magic : a92b4efc Version : 0.90.00 UUID : 2dd89f15:65bbff88:e368bf24:bd0fce41 Creation Time : Fri Mar 30 19:25:30 2012 Raid Level : raid1 Used Dev Size : 732568320 (698.63 GiB 750.15 GB) Array Size : 732568320 (698.63 GiB 750.15 GB) Raid Devices : 2 Total Devices : 2 Preferred Minor : 127 Update Time : Sat Mar 31 12:39:38 2012 State : clean Active Devices : 1 Working Devices : 2 Failed Devices : 1 Spare Devices : 1 Checksum : a7d038b3 - correct Events : 20195 Number Major Minor RaidDevice State this 2 8 17 2 spare /dev/sdb1 0 0 8 1 0 active sync /dev/sda1 1 1 0 0 1 faulty removed 2 2 8 17 2 spare /dev/sdb1 === root@freshdesk /root % mdadm -A /dev/md127 /dev/sda1 /dev/sdb1 mdadm: no recogniseable superblock on /dev/sda1 mdadm: /dev/sda1 has no superblock - assembly aborted root@freshdesk /root % mdadm -A /dev/md127 /dev/sdb1 mdadm: cannot open device /dev/sdb1: Device or resource busy mdadm: /dev/sdb1 has no superblock - assembly aborted

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• SQL 2008 Memory Usage

  - by Danilo Brambilla

  I have a SQL Server 2008 (ver 10.0.1600) running on a Windows Server 2008 R2 Enterprise server with 8 GB of physical ram. If I open Task Manager I can see on 'Physical Memory' section of 'Performance' tab that only 340 MB are Available of 8191 Total, but I can't see any process using such amount of memory. Please note SQL Server is memory limited to 6GB (Maximum Server Memory = 6000). If I open Sysinternals Process Explorer, I can see sqlsrvr.exe process has: Private Bytes: 227.000 K Working Set: 140.000 K Virtual Size: 8.762.000 K What does this means? Is there any way to free up this memory for other process? Why Virtual Size figure as allocated memory? I thought that Virtual Size was 'reserved memory' only.

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• Internet access using Edimax BR-6204WG as NIC

  - by Mat Richardson

  My internet access at home is provided by Virgin Media via their superhub. I have a laptop with no NIC - however I do have a spare wireless router, the Edimax BR-6204WG, which I have been led to believe can be used to bridge wireless connections. Only problem is, I'm not sure how to go about doing this. The manual for the device is here:- http://www.edimax.co.uk/images/Image/manual/Wireless/BR-6204Wg/BR-6204Wg_Manual.pdf Basically, I want to be able to connect the Edimax wireless router to my laptop using ethernet cable and to use it to pick up the wireless connection from my Virgin superhub. I've managed to get so far in some ways, but then I'm stuck.

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• Tools to monitor guest OS performance in vSphere

  - by Quick Joe Smith

  I am looking for some tool or way to retrieve performance data from guest VMs running under vSphere 4.1. I am currently interested in the 4 basic metrics: CPU(%), Memory(%), Disk availability(%) & Network utilisation(Kb/s). The issue I have is that all of vSphere's performance data is from a ESXi host perspective (active, shared, consumed, overhead, swapped etc.) which is far removed from the data from the VM's own perspective. For instance, I have a Windows server VM idling, using around 410MB (~25% of its allocated 2GB) as reported by Task Manager, and this is the value I'm after. vSphere's metrics seem unable to arrive at this figure by any reliable and repeatable means. Is anyone aware of tools that can obtain this kind of data? The simpler, the better.

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• Possible to get OpenDNS to dereference Host on VPN?

  - by Scott P

  I recently changed ISPs for my home internet. I am now having some trouble getting back into the corporate network from home over the VPN. I have figured out the OpenDNS is resolving the Hosts on the VPN incorrectly when I am using TCP/IP. When I browse to one of the hosts on corporate network, i.e. \host1, from the file manager this succeeds. However, when I ping the host, i.e. ping host1, the IP address is resolving to the OpenDNS name server instead of the actual Host IP address. Does anyone know how to make this work? On a hunch, I turned off type correction. But, this did not help.

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• Monitor Bonded Interface for Disconnection

  - by bradlis7

  I am trying to monitor for network failures on a machine, and one portion of that is to monitor interfaces that are intended to be active also be "RUNNING". An Ethernet port, such as eth0, will say "RUNNING" if it is physically connected to another device. The problem lies in the bonded interfaces, such as bond0. If all of the ethernet devices are disconnected, it still says that it is running, and it is still pingable. Is this by design, or is my system setup incorrectly? Does the miimon option have something to do with this?

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• Proper upstart script for hamachi?

  - by ALQ

  I've been looking for a script to supervise hamachi and mostly got it to work except for the part that daemonizes hamachid. The following script works but is not perfect. I'm not familiar with upstart internals to debug this further. description "Hamachi VPN" author "Alexis Le-Quoc <[email protected]>" start on (net-device-up and local-filesystems and runlevel [2345]) stop on runlevel [016] respawn oom never env DAEMON=/opt/logmein-hamachi/bin/hamachid pre-start script [ -x "$DAEMON" ] end script # should really be: # expect daemon # exec $DAEMON exec $DAEMON debug > /dev/null

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• Extract MP3 URL from a SWF file

  - by Charles

  I have a SWF file that basically shows a streamer, and it plays a song (I'm guessing it's MP3) that it links to, somewhere. I know the audio isn't embedded in the file since the SWF's file size is ~370KB. With most flash FLV and MP3 players, Internet Download Manager catches the URL as soon as the video/audio starts to load, and I can easily download it using IDM. In this case, IDM doesn't seem to sense anything - so I thought maybe I could extract the MP3 location myself. I tried decompiling the SWF file, as I'd heard before that with some files, decompiling can help in breaking down a file and getting just the info you need - but I honestly don't know what to look for in this particular file. Suggestions?

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• Can I increase the link speed of the RAS Server on our MS Win2k3 box?

  - by Ducain

  We are running a Win2K3 Server box, and I'm a remote employee that connects via VPN. I've been frustrated for some time by the connection speed over the VPN (the office HQ has a decent speed and I have a biz class connection here), and decided to do some checking today. This morning, I was dialed in and looked at the networking tab of the task manager, and I see that the adapter for the RAS Server (the box has 4 Gigabit adapters) has a speed that seems far too low. The speed for the RAS Server link hovers between 300 - 600 Kbps. The local connection (and others) all say 1 Gbps. Can I set this to a higher speed? Is this information accurate? Thanks for the input.

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• Is it possible to save the product key of Windows 8?

  - by Dibya Ranjan

  I have Windows 8 activated in my system. I don't have the product key of windows right now. Now I want to format my system again. Is there any way so that I can reuse the key? Is there any way I can get the key from an activated windows machine? Edit: I am not able to find the product key because I have used a MAK as my product key. Now I want the same to use it after formatting my disk. I found a software Volume Activation Manager tool on the windows website. I am not sure how to use it. Please tell me how can I reuse my key?

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• ubuntu qcow2 image for local usage

  - by aisbaa

  I'm using kvm and I would like to run ubuntu server on it. My goal is to run db2 database instance for development. Is there ready to use ubuntu qcow2 images online for such purpose? Or should I install it from live cd? I've found this instruction UEC/Images, but at launch I get: $ kvm -fda ${floppy} -drive if=virtio,file=./disk.img -boot a ... Nothing to boot: No such file or directory (http://ipxe.org/...) No more network devices No bootable device. Solution: I havent found pre-installed ubuntu virtual machine image online, so solution is to install it by your self.

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• Delta files not deleted

  - by DanieleF

  Dear al, I found out that my VM is running with a snapshot which is not visible in the snapshot manager. I found out also that the machine is running on a delta file (probably an old snaphot) I see there are procedures to consolidate snapshots but what i want to understand now is : Having a VMDK-flat disk of 50gb =which is actually the vdisk created at the beginning Now i have a DELTA file of 38 gb...and this file it is growing on daily basis. My question is : why the delta file is growing ? is that normal ? Please let me know what is behind.

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• Keep lan connection alive while going to sleep

  - by user18151

  Is it possible to keep lan connection alive when going to sleep? Although I would like a laptop independent(in general) answer, my laptop is Thinkpad T500 and the power manager shows in PCI options, the following three option regarding saving link state power: Off, moderate, maximum. Also instant resume apparently does something different, so that isn't much help either. I'm on Windows-7. Here's why: I'm a student, and currently I keep my laptop on almost all the time, but sometimes I sleep it and then I require to check something, so I turn it on. But then internet starts in at least a minute. So I avoid even putting it to sleep. I want that the internet connection should persist, so that I can put it to sleep to avoid power consumption.

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• SQL 2008 Memory Usage

  - by Danilo Brambilla

  I have a SQL Server 2008 (ver 10.0.1600) running on a Windows Server 2008 R2 Enterprise server with 8 GB of physical ram. If I open Task Manager I can see on 'Physical Memory' section of 'Performance' tab that only 340 MB are Available of 8191 Total, but I can't see any process using such amount of memory. Please note SQL Server is memory limited to 6GB (Maximum Server Memory = 6000). If I open Sysinternals Process Explorer, I can see sqlsrvr.exe process has: Private Bytes: 227.000 K Working Set: 140.000 K Virtual Size: 8.762.000 K What does this means? Is there any way to free up this memory for other process? Why Virtual Size figure as allocated memory? I thought that Virtual Size was 'reserved memory' only.

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• Mounting root failed. Dropping into basic maintenance shell

  - by vmsystem

  Hi, I have purchased AMD Phenom X4 955 3.2GHZ processor with supporting gigabyte GA-MA785GM-US2H mother board / 6GB DDR2 RAM / 500GB SATA drive for learning Vmware ESX 3.5 product. In the above configuration, I have installed windows xp 64 bit operating systems and continue to installed vmware workstation 6.5. From the VM workstation, I can able to install ESX3.5 update2, but I unable to start properly, please refer the below mention error. “Mounting root failed. Dropping into basic maintenance shell. To collect logs for VMware, connect a USB storage device and run 'bin/vm-support '. Machine will be rebooted when you exit from this shell.” The same was tested in the windows 2003 Enterprise Edition server / windows 7 32bit / windows 7 64bit also, Please help me to resolve the issue.

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• Change Linux console screen blanking behavior

  - by quack quixote

  How do I change the screen blanking behavior on Linux virtual terminals? For example, if I switch to a VT from X, login, and leave the system alone for 5 minutes or so, the screen will blank like a screensaver. It comes back with any keypress, like a screensaver. Mostly I just want to change the timeout, but I'm also interested in other settings. If it helps, one of my systems is running Ubuntu 10.04 with the stock graphics drivers. fbset shows the console using the radeondrmfb framebuffer device.

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• Can't find generic USB audio driver for a Samson COU1 USB microphone

  - by user10321

  I am unable to use a Samson USB CO1U microphone on a PC running XP, SP3. When I plug it into the USB port, Windows generates the sound indicating that it has found new hardware, and the green LED on the mic lights. But, it does not work, and the device manager reports that it cannot find a driver after searching. The same mic works on a Vista machine. Samson has no driver on their Web site, and insists that the generic audio driver in Windows should work. (http://www.samsontech.com/PRODUCTS/productpage.cfm?prodID=1810). I cannot find a generic USB audio driver at Microsoft.com. Can anyone help? Larry

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• OpenVPN Setup - Service Won't Start

  - by Lenwood

  I'm in the process of setting up OpenVPN on a VPS running Debian 6. I've walked step-by-step through this guide twice now, and I can't get the service to start. When I start the service, the error reported in the log file is: Cannot ioctl TUNSETIFF tun: Inappropriate ioctl for device (errno=25) I've searched the web a few times and I'm not finding anything helpful. I've tried: Changing file permissions: no change Deleting the file: get an error stating no file found (errno=2) Making a folder named "tun": get an error stating no file found (errno=2) I've wiped my installation and completed the steps verbatim twice now. I get no errors along the way, just the error above within my log file. The contents of my server.conf file are listed below, minus all the comments for brevity. Can anyone help? port 1194 proto udp dev tun ca ca.crt cert myserver.crt key myserver.key dh dh1024.pem server 10.8.0.0 255.255.255.0 ifconfig-pool-persist ipp.txt keepalive 10 120 comp-lzo persist-key persist-tun status openvpn-status.log log openvpn.log verb 3

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• Scripted printer configuration changes

  - by David Steven

  I've got about a dozen Windows XP machines that I need to make a couple specific printer configuration changes to. The printer is "virtual" printer for an electronic delivery service. I'd like to not have to visit each machine individually. I already have the means to execute commands remotely on the machines, I just can't seem to find away to adjust these settings via command line or script. Specifically I need to be able to make the following changes: 1) As an admin user: - Device Settings - Font Substitution Table/Courier New - Change to "Courier" 2) As a specific* user: - Printer Preferences - Paper/Quality - Advanced - Change Graphic/Print Quality to "600 x 600" - Change Document Options/Printer Features/Graphics Mode to "HP-GL/2" *This change is a per user configuration, unless there's some way to make it once. In this situation I only really need it for a specific (different) user on each machine.

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• Mounting both /dev/sda and /dev/sda1 - how can this be?

  - by itsadok

  I work on an Amazon EC2 instance that somebody else set up. We have an EBS volume mounted on /dev/sda, even though the root device is already on /dev/sda1, and we're also using `/dev/sda2' user@server:~$ mount /dev/sda1 on / type ext3 (rw) ... (snip) /dev/sda2 on /mnt type ext3 (rw) /dev/sda on /vol type xfs (rw,noatime) ... This doesn't seem to fit with what I know about the way /dev/ works. How is this possible, and more importantly: will this cause trouble in the future? I'm running ubuntu 9.04 jaunty.

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• Best way to replicate servers

  - by Matthew

  I currently have two servers both with linux software RAID1 configurations. They use heartbeat and DRBD to create a shared DRBD device that hosts a a exported NFS directory. The servers run Ubuntu Server with a LXDE GUI and some IP These servers are going to be placed on fishing vessels to act has redundant storage for IP cameras. My boss wants me to figure out the most efficient way to create these servers. We might be looking at pushing out several systems a week. Each configuration will be almost identical besides IP addressing. What would be the best method to automate the configuration process? We are trying to cut down on labor costs to set these up. Imaging and Proceeding are both on my mind right now

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• Re-configuring mysql-server 5.1

  - by sitonico

  Hi all! Some days ago I had some problems with updates, and this ended up with a problem that I already solved in this question . The problem is that now I want to update again, but it seems that I cannot do it automatically, because when I use the update manager it gets stuck while configuring mysql-server 5.1, in the line : Configuring mysql-server 5.1 (5.1.41-3ubuntu12.10)... I have been looking for some solution but it seems hard because actually I don't know where to start, so any hints are appreciated. Thanks in advance! Alf.

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• Ubuntu 9.04 Cannot Connect to visible open wifi ap (reason 6)

  - by Andrew Bolster

  I'm travelling currently so the last network i connected successfully to was my home wpa-psk network. I hadn't tried anything until i got to my accommodation that is an open network (that I'm on now on the Win7 partition on my laptop). The network (and a similar archetypical 'linksys' open network, aswell as some protected local networks are correctly displayed in network-manager and upon selection, it happily spins around to its hearts content for a while before saying 'no chance boy'. /var/log/syslog spills out the usual combination of wpa_supplicant and kernel messages, the most interesting of are that the kernel deauthentication reason 6 response. 6 apparently means class2FrameFromNonAuthStation...Client attempted to transfer data before it was authenticated. Anyone seen anything like this? I've already tried going closer to the router to no avail. I don't remember seeing this any other time I've connected to a open AP, even if that AP is far away. (Signal strength for this AP is good, kismet says its around -57dBm, well above the threshold of -80dBm, and I've tried all the suggestions from the 'Related Questions'

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• USB Virtual RAM is not working properly

  - by Haseeb Anwar

  This images are help u in solving my question.1I have installed Windows 7 64 bit. I have made a virtual USB RAM but it is not working properly. First I go to the USB PropertiesReady Boost. Use this device as a virtual RAM and then click Apply then Ok. then I go to My Computer PropertiesAdvance system settingsAdvance(tab)SettingsAdvanceChange. When i click on change button the USB is not here. What can I do. Please answer my question.

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