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• How can I disable the beep when I plug in/unplug my laptop's AC adapter?

  - by Dunaril

  My Packard-Bell laptop is emitting a loud, annoying beep when I connect or disconnect it to/from an AC power source. Whether I have headphones plugged in or not does not change anything; the sound goes out of the speakers and wakes everyone up. Do you know of any ways to eliminate this sound? I searched around the Internet and found a solution involving setting a specific volume bar to 0 in the playback settings, but I did not find it on my laptop. I am using Windows 7.

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• Ubuntu 12.04 resolution stuck on 640x480

  - by user212483

  I am new to Ubuntu and I was trying to get my HDMI enabled TV to work with my Ubuntu 12.04 computer and I installed a Nvidia driver using the "additional drivers" program. After that didn't work, I started playing around with the dual booted windows 7 on my computer. Now, I've never used that windows since I installed it so I was stripped down to bare minimum so I tried to adjust the resolution(as it was on lowest resolution) and tried to connect the HDMI, which didn't work. After that I came back to my Ubuntu installation only to find out that it is now stuck on 640x480 resolution. I tried to remove the driver that I installed again using the "additional drivers" program but that didn't help at all. The error that showed up was - Could not apply the stored configuration for monitors none of the selected modes were compatible with the possible modes: Trying modes for CRTC 63 CRTC 63: trying mode 640x480@60Hz with output at 1366x768@60Hz (pass 0) CRTC 63: trying mode 640x480@60Hz with output at 1366x768@60Hz (pass 1) Trying modes for CRTC 64 CRTC 64: trying mode 640x480@60Hz with output at 1366x768@60Hz (pass 0) CRTC 64: trying mode 640x480@60Hz with output at 1366x768@60Hz (pass 1) Any help would be appreciated as this is very annoying. Thanks

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• Amazon EC2 firewall rules & VPN connections

  - by John

  I'm moving from Rackspace to Amazon EC2. One thing I like about our Rackspace setup is that it is extremely secure. The MySQL box can only be accessed via internal IPs, and we have a Cisco VPN firewall that allows us to dial in remotely and access port 3306 as though we were on the internal network. I'd like to figure out how to replicate this setup with EC2. How can I make the MySQL box so that port 3306 can only be accessed on the internal network? What about the VPN piece of things? I know Amazon has the VPC service, but it seems like that's for the purpose of connecting to an existing network. I don't have an existing network. I want to essentially create one inside Amazon and connect to that. What are my options? Any good tutorials on how to get started? Thanks in advance for your help

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• Cannot redirect ip traffic with iptables to new ip on linux centOS

  - by Kiwi

  today I able to migrate some of the game servers to another server and needed some help to redirect the traffic from old ip to the new one. SERVER1 1.1.1.1 ----- (internet ) ----- SERVER 2.2.2.2 I asume to use iptables to perform this, for that used this rule on my centOS box in the server1. /etc/sysctl.conf: net.ipv4.ip_forward = 1 iptables -t nat -A PREROUTING -p udp --dest 1.1.1.1 --dport 27015 -j DNAT --to-destination 2.2.2.2:27015 iptables -t nat -A POSTROUTING -j MASQUERADE iptables -t nat -A POSTROUTING -d 2.2.2.2 -p udp --dport 27015 -j SNAT --to 1.1.1.1 But the client cannot connect to the server from the old ip, the redirection don't started.

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• How to increase Remote Desktop resolution?

  - by BugAlert

  I'm using Windows 7 on a PC and connect to it via Remote Desktop Connection for Mac by MS, using a Mac. On the Mac, I have a 27" Display with 2560 x 1440 px resolution. The PC has a high performance graphics card (one of those that needs an additional power supply). Both machines are connected via network cable to a router. So network should be insanely fast. However, the max resolution I can get is 1400 x 1050. The PC just has a old and bad 21" monitor connected to it. How can I increase the resolution to 2560 x 1440 to work fullscreen with the Apple LED Cinema Display via Remote Desktop? Maybe I shouldn't even ask, because I already experience some lag at the low resolution of 1400 x 1050. But I guess this can be resolved as well?

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• Network with bridge and port forwarding?

  - by rafek

  Hi! Below is my current (and planned) home network configuration. I would like to connect my non-wifi-capable desktop to my home network. The question is: HOW? What device do I need? The primary requiremen is that I need to be able to forward ports to my desktop. How would I achieve this? Is there something like "double port forwarding"? Could anyone please explain this configuration to me? Thank you in advance!

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• Firefox cannot recognize certificates for well knows sites

  - by RCola

  When trying to connect to well known sites, for instance hotmail.com Firefox shows that This Connection in Untrusted. In the OptionsAdvancedCertificates it's configured to select one matching certificate automatically. Why Firefox does not trust current connection? Can it be Man-in-the-middle attack or it's something like broken certificate storage on my computer? UPDATE UPDATE2 Solved: the problem is Antivirus Web Access protection. It interferes with HTTPS connection. Similar to Man-in-the-middle? Why ESET cannot do it correctly?

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• MongoDB REST interface not listening after update

  - by Ones and Zeroes

  I replaced the mongodb-10gen install with the Ubuntu package (mongodb-server, mongodb-client and dev). apt-get install mongodb Thereafter, I am now unable to connect to the REST interface, where it worked before. Doing a wget to http://127.0.0.1:27018, I receive the following response: Connecting to 127.0.0.1:27018... failed: Connection refused. My previous /etc/mongodb.conf file had the following in: #enable REST rest = true Adding it to the packaged conf file does not resolve the issue, not even after restarting. I also tried changing the following with no effect: # Disable the HTTP interface (Defaults to localhost:27018). # nohttpinterface = true to # Disable the HTTP interface (Defaults to localhost:27018). nohttpinterface = false I have searched for days, and there doesn't seem to be anything on the Mongo site about a similar anomaly. If you have encountered a similar issue on Ubuntu Oneiric, please add your comments, even if you haven't found a solution to this issue.

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• FreePBX: Asterisk in the Cloud (EC2) Audio Problems

  - by neezer

  Please pardon the newbie question, but I can't seem to figure this out. I followed the Voxilla's tut to the tee: http://voxilla.com/2009/10/15/voxill...p-by-step-1457 But in making calls, my softphones connect, yet no audio (in either direction). I know from poking around the forums that this is generally caused by two factors: NAT and audio codecs. I (being new to the arena), however, don't know which. I believe I have Asterisk and the clients restricted to just ulaw, and I also believe I have the correct ports open, and my externip set correctly (I think the Voxilla AMI does this automatically, since it's in the cloud). I'm a bit lost. I'd be happy to post whatever configuration files that might help, provided you tell me where they are on the filesystem. But like I said before, this is effectively a vanilla install of Voxilla's own FreePBX AMI. I'd appreciate any help or guidance here. Thanks!

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• FreePBX: Asterisk in the Cloud (EC2) Audio Problems

  - by neezer

  Please pardon the newbie question, but I can't seem to figure this out. I followed the Voxilla's tut to the tee: http://voxilla.com/2009/10/15/voxill...p-by-step-1457 But in making calls, my softphones connect, yet no audio (in either direction). I know from poking around the forums that this is generally caused by two factors: NAT and audio codecs. I (being new to the arena), however, don't know which. I believe I have Asterisk and the clients restricted to just ulaw, and I also believe I have the correct ports open, and my externip set correctly (I think the Voxilla AMI does this automatically, since it's in the cloud). I'm a bit lost. I'd be happy to post whatever configuration files that might help, provided you tell me where they are on the filesystem. But like I said before, this is effectively a vanilla install of Voxilla's own FreePBX AMI. I'd appreciate any help or guidance here. Thanks!

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• Dell M4600 with nVidia Quadro 2000M hangs on boot when external monitor is connected

  - by vladeta

  I have a problem with my fresh installed Ubuntu 12.04 LTS on my Dell M4600: nVidia quadro 2000M i7-2860 16GB ram 128GB SSD Dell/Samsung 750GB HDD IPS RGB laptop display When it is connected via DP++ to the external Dell U2311H monitor, it hangs on boot or when wakening from suspend. If I detach the DP cable it boots normally. I have tried all combinations that I have found, as adding to grub: "no splash", "boot=pci", "acpi=off", etc... I have also changed in nVidia X settings that external monitor is the primary one and also tried to delete monitor.xml file. There is no change it hangs each time after grub. It starts to load daemons then both screens are blank and then completely hangs with beep sound. What I discovered is if I detach the cable and wait for about 2 sec after grub starts booting and then physically connect DP cable while the Ubuntu is still booting everything works normally and I have a picture on my external screen while the laptop screen is off, just as I wanted. Do you maybe know how to solve this issue? Thank You.

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• Xnest from Mac OSX to HP UX

  - by Burbas

  Hi, I'm trying to connect to my HP/UX machine from Mac OS X using Xnest. The problem is that I can not get the keyboard to work. I can see the login-prompt, but unable to type in my username. The connection is done by: Xnest :1 -query 192.168.0.193 -geometry 1280x1024 and it gives me some errors: (EE) AIGLX error: dlopen of /usr/X11/lib/dri/swrast_dri.so failed (dlopen(/usr/X11/lib/dri/swrast_dri.so, 5): image not found) (EE) GLX: could not load software renderer (EE) XKB: Couldn't open rules file /usr/X11/share/X11/xkb/rules/base (EE) XKB: No components provided for device Virtual core keyboard Couldn't get keyboard. I hope there is someone here who might have the answer :-).

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• Can I use only a HDMI monitor?

  - by Felix

  I recently found out there are such things as PC monitors with TV capabilities (or TVs that can be PC monitors), and the idea kind of tickles my fancy. I'm thinking of getting one of these gadgets, and if I do, I will connect it to my PC via HDMI (my graphics card has builtin HDMI), so that I also get sound to the TV. The reason for this is because I have a 2.1 sound system which I want to use both on the PC and the TV. Basically, I want the configuration to look like this: Cable --------> TV --> 2.1 Sound System PC --HDMI--> TV --> 2.1 Sound System My question is: can I use a setup like this? Can I not have a classic VGA monitor? Will I be able to see non-graphical interfaces (such as the BIOS, GRUB, a Linux terminal, ...) through HDMI on the TV? I use Windows 7 and Ubuntu.

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• Wireless keeps disabling or stays disconnected (Realtek RTL8191SEvB)

  - by jindrichm

  I have Realtek RTL8191SEvB wireless card on Ubuntu 10.10: $ lspci -v | grep Network 03:00.0 Network controller: Realtek Semiconductor Co., Ltd. RTL8191SEvB Wireless LAN Controller (rev 10) When I load its driver, according to the Network Manager it sometimes blinks with a list of available networks but it keeps disabling itself or it stays disconnected. So, I can't connect to any wi-fi network (which results in frustration). The driver is loaded: $ lsmod Module Size Used by r8192se_pci 509932 0 Looks normal: $ sudo lshw -C network *-network description: Wireless interface product: RTL8191SEvB Wireless LAN Controller vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: pci@0000:03:00.0 logical name: wlan0 version: 10 serial: 1c:65:9d:60:c7:7a width: 32 bits clock: 33MHz capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless configuration: broadcast=yes driver=rtl819xSE driverversion=0019.1207.2010 firmware=63 latency=0 link=no multicast=yes wireless=802.11bgn resources: irq:17 ioport:2000(size=256) memory:f0500000-f0503fff Configured: $ sudo iwconfig wlan0 wlan0 802.11bgn Nickname:"rtl8191SEVA2" Mode:Managed Frequency=2.412 GHz Access Point: Not-Associated Bit Rate:130 Mb/s Retry:on RTS thr:off Fragment thr:off Encryption key:off Power Management:off Link Quality=10/100 Signal level=0 dBm Noise level=-100 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:0 Invalid misc:0 Missed beacon:0 Is not blocked: $ rfkill list all 0: tpacpi_bluetooth_sw: Bluetooth Soft blocked: no Hard blocked: yes However something's happening with it: $ dmesg [ 6485.948668] InitializeAdapter8190(): ==++==> Turn off RF for RfOffReason(1073741824) ---------- [ 6486.062666] rtl8192_SetWirelessMode(), wireless_mode:10, bEnableHT = 1 [ 6486.062671] InitializeAdapter8192SE(): Set MRC settings on as default!! [ 6486.062675] HW_VAR_MRC: Turn on 1T1R MRC! [ 6486.064091] ADDRCONF(NETDEV_UP): wlan0: link is not ready [ 6486.248761] rtl8192_SetWirelessMode(), wireless_mode:10, bEnableHT = 1 [ 6486.248771] InitializeAdapter8192SE(): Set MRC settings on as default!! [ 6486.248776] HW_VAR_MRC: Turn on 1T1R MRC! [ 6486.580083] GPIOChangeRF - HW Radio OFF [ 6486.610085] ============>sync_scan_hurryup out [ 6486.623814] ================>r8192_wx_set_scan(): hwradio off [ 6486.830484] =========>r8192_wx_set_essid():hw radio off,or Rf state is eRfOff, return So, does anyone know where the problem might be?

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• USB MFP print server that works with Windows x64?

  - by hangy

  Right now, we are using the Longshine LCS-MFP101-2 to connect to our MFP device (printer/scanner combo) over LAN. However, the required driver (RMVUSB, Remote Virtual USB) cannot be installed on 64 bit Windows operating systems such as Windows XP x64 or Windows 7 x64. Since the distributor lists the product as "phased out", I do not expect any updated 64 bit drivers any time soon. :/ Because of that, I am searching for a relatively cheap SOHO MFP print server (1 USB port should be enough) which can be used with 32 bit and 64 bit versions of Windows. Do you have any ideas or recommendations? Thanks!

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• Remote desktop fails with user denied until client reboot

  - by Andrew J. Brehm

  Sometimes (but often enough to anoy) Remote Desktop Connection cannot connect to a server (2008 R2 but maybe also 2003) and claims that "The connection was denied because the user account is not authorized for remote login." The user is always authorized for remote login and the connection works from other clients. (Although this is the very same message that appears when a user really isn't autorized for remote login.) The problem always goes away after a client restart. The client is always Windows 7 but I have no (other) reason to assume that it only affects Windows 7 clients. Any idea what causes this?

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• Do I need a Gigabit router with a 24MB/s down and 7MB/s upload speed cable modem?

  - by djangofan

  Do I need a Gigabit port capable wireless router with a 24MB/s down and 7MB/s upload speed cable modem? Does anyone know how to calculate this? FYI, I wont be using the wireless connection from my main computer system. My computer will connect via a hard wire into the router (of the wireless variety), which in turn is connected to the cable modem. My research suggests that the 100 MB/s port can easily handle it. Is that true?

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• How to keep TightVNC client on Windows XP alive when connected to OS X?

  - by Craig

  I'm using TightVNC on my Windows XP workstations to connect to a remote OS X box (10.5.x) using OS X's VNC support. I've noticed that the TightVNC will become unresponsive after a period of inactivity. Is this a common issue? Restarting TightVNC solves the problem, but can be a bit annoying. Is there a solution to this? I don't suppose copy & paste between the two systems can be made to work?

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• Automating the Backup of a SQL Server 2008 Express Database

  - by JaydPage

  Steps Involved: 1) Create a Database Backup Script. 2) Create a Scheduled Task To Run the Backup Script. 1 Create a Database Backup Script. a) Download and install SQL Server Management Studio. This is a free tool available on the Microsoft website. b) Once Management Studio is installed launch it and connect to the SQL server instance that contains the database that you want to back up. c) Right click on the database and then in the menu choose Tasks -> Back up... d) This will open up a window where you can choose your backup options, once you are happy with the options click on the "Script" button near the top and select the "Script Action to File" option. e) Save the File. 2 Create a Schedule Task to Run the Backup Script a) Open up Windows Task Scheduler. b) Create a new Task using the wizard, when asked to select a program browse to C:\Program Files\Microsoft SQL Server\100\Tools\binn\SQLCMD.exe c) There are 2 arguments that need to be set: -S \SERVER_INSTANCE_NAME  -i "PATH_OF_SQLBACKUP_SCRIPT" where SERVER_INSTANCE_NAME  is the name of the instance of SQL server that contains your database e.g. (local) and PATH_OF_SQLBACKUP_SCRIPT is the path of your backup script e.g. "C:\Program Files\Microsoft SQL Server\DatastoreBackup.sql" d) Adjust the task to run at the desired times and you are done.

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• How to host an AP or a hotspot?

  - by user1048138

  I'm running Ubuntu 12.04 as a virtual machine on my Mac. Since I am unable to get the virtual machine to have full access to my WiFi card, I bought another USB WiFi card to use. This is my WiFi card. If you are unfamiliar with Virtual machine, as far as I know, since the Ubuntu has its own card now, it shouldn't matter. I have followed these guides with no luck: https://help.ubuntu.com/community/WifiDocs/WirelessAccessPoint http://www.danbishop.org/2011/12/11/using-hostapd-to-add-wireless-access-point-capabilities-to-an-ubuntu-server/ The problem is that the WiFi connection appears on all of the machines that I have in my house: 2 iPhones, Dell machine running Ubuntu and two Macbooks. However the connection times out on all of these machines. Questions: Could this be a driver issue if that same WiFi card can connect to other WiFi points and use its internet Could this be DHCP related? I would think not. It should at least get a 169.X.X.X address? No? Any solutions for me?

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• how to debug mysql has gone?

  - by fefe

  I have a virtual machine(Ubuntu 12.04, MySQL 5.5) running under VMware and is dedicated to host a mysql server. I connect to this server on internal IP. I'm trying to find out why I get mysql server has gone error. One my windows machines apache it stops because of this issue. I have been trying to fine tune my mysql my.cnf with the following parameters but did not bring the desired result. # Instead of skip-networking the default is now to listen only on # localhost which is more compatible and is not less secure. bind-address = 0.0.0.0 # # * Fine Tuning # wait_timeout = 180 key_buffer = 384M max_allowed_packet = 64M thread_stack = 192K thread_cache_size = 8 # This replaces the startup script and checks MyISAM tables if needed # the first time they are touched myisam-recover = BACKUP max_connections = 500 table_cache = 64 #thread_concurrency = 10 # # * Query Cache Configuration # query_cache_limit = 1M query_cache_size = 32M how to debug this issue what is missing from configuration to avoid this error?

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• Oracle Partner Days and Oracle Days are coming to an EMEA city near you!

  - by Javier Puerta

  Oracle Partner Days A new round of Oracle Partner Days is coming to a large number of European cities. These events are exclusive for Oracle partners and will deliver to you real Business return on your OPN membership.You will hear the business opportunities coming from the adoption of the entire Oracle stack, the latest products value propositions and related sales strategy and be able to connect directly with Oracle executives and find new business opportunities with other partners in your region.The EMEA Oracle Partner Days are Local/Regional live events targeting the key contacts in sales and consultancy delivering Oracle strategy, engaging around the several perspectives of the Oracle portfolio, executive keynotes and deep dive Business content-related breakout sessions. The first city will be Frankfurt, on Oct. 29. Check the full list to find an Oracle Partner Day in a city near you. Oracle Days Oracle Days will be hosted after Oracle OpenWorld across EMEA, along October and November. By attending an Oracle Day, customers and partners can: Learn about how to leverage the power of the Oracle stack, by hearing customer case studies about successful business transformation, and by following cross-stack solution tracks within the agenda Discuss key issues for business and IT executives in cloud, big data, social, and mobile solutions, and network with peers who are facing the same challenges Meet Oracle experts and watch live demos of new products Get the latest news from Oracle OpenWorld. See full calendar and cities here

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• Has anyone figured out how to use same username with different passwords (Windows)

  - by Coder

  Tried Googling, tried net use, and anything I could, with no results. I have a PC with users, and I have a network server with shared folders. For some users the usernames of the share and local account match, but the passwords are different (a good security practice). Unfortunately, Windows doesn't want to remap the drives on login, and asks for credentials when I try to connect. If I enter the password, the connection succeeds, but it still fails on next login, even if I have checked the "remember" checkbox. On PC: usera@machinea pass1 On NAS: usera@nas pass2 net use z: \\nasip\usera /user:nasip\usera pass2 /persistent:yes Credential store seems to have the user credentials stored... But the mapping fails all the time.

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• AuthInfoRequired cups overwrites

  - by mooscape

  My problem is basically identical to the following: http://bbs.archlinux.org/viewtopic.php?id=61826 Put simply, I have a machine in ubuntu trying to connect to another ubuntu machine via a network in order to use the printer attached. There is no problem printing until I restart the guest machine. Immediately it overwrites the printers.conf file (under /etc/cups/printers.conf). It always adds the same line: AuthInfoRequired username,password I stop cups and change it to *#*AuthInfoRequired username,password to comment out the command. Start cups. Works great 'til the next shutdown. Then it gets overwritten again. Googling indicates it may be GTK problem and not CUPS, but I have found no permanent solution to date. Any suggestions appreciated ....

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• Connecting office to data center via Metro-ethernet

  - by Eric

  I am installing a metro ethernet link from my office to my data center. The office will have a cisco 3750 with several vlans. The data center end will have a more complicated set up. The metro e from the office will connect to a 2960, which will have two other 2960s with a few vlans and a 2811 router connected to it for connectivity to our other environments and the internet. I am looking at implementing this by connecting the office 3750 and the data center 2960 with a dot1q trunk and doing all routing at the 2811. I will configure subinterfaces for gateways for each of the vlans on the 2811. I work for a small company and don't have much of a budget for an ideal architecture. I can post a simple diagram if needed for clarification. Is there anything I am missing here? I feel like I am forgetting something very basic and want to make sure I eliminate any boneheaded mistakes.

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