Search Results

Search found 23653 results on 947 pages for 'disk problems'.

Page 550/947 | < Previous Page | 546 547 548 549 550 551 552 553 554 555 556 557  | Next Page >

• Recommendations for managing DNS issues when hosting customer sites.

  - by Thomas

  I'm working at a company which primarily provides SaaS products but also will host some of our customers corporate websites. My question relates to recommendations for managing DNS for client's domain names. My objectives: Not restrict my ability to change the server's IP address such as might happen when I move my servers to a new host. Not have to contact the customer to change their domain's DNS if I need to change the server's IP address. Often times, customers lose this information or have to track down the one person with any knowledge of the domain settings. Map both .clientdomain.com and www.clientdomain.com to the proper IIS site. However, I'm running into a couple of common problems: Sometimes, the DNS console provided by the client's hosting company does not allow for CNAME records. Sometimes, the DNS console provided by the client's hosting company will not let me create a CNAME entry for .spiffydomain.com because the given hosting company has created a SOA record for that entry or simply requires that .spiffydomain.com be an A record. I believe one solution to #2 is to use a wildcard for a CNAME entry (i.e. *.spiffydomain.com). Is that correct? How do other folks that are hosting many customer's site manage change of DNS entries on their servers?

  Read the article

• Inconsistent movement / line-of-sight around obstacles on a hexagonal grid

  - by Darq

  In a roguelike game I've been working on, one of my core design goals has been to allow the player to "Play the game, not the grid." In essence, I want the player's positioning to be tactical because of elements in the game world, not simply because some grid tiles are more advantageous than others, in relation to enemies. I am fine with world geometry not being realistic, but it needs to be consistent. In this process I have ran into most of the common problems (Square tiles? Diagonal movement, LOS, corner cases, etc.) and have moved to a hexagonal tile grid. For the most part this has been great, and I've not had too many inconsistencies. Recently however I have been stumped by the following: Points A and B are both distance 4 from the player (red lines). Line-of-sight to both are blocked by walls (black tiles). However, due to the hexagonal grid, A can be reached in 4 moves, whereas B requires 5 moves (blue lines). On a hex grid, "shortest path" seems divorced from "direct path", there may be multiple shortest paths to any point, but there is only one direct path (or two in some situations). This is fine, geometry need not be realistic. However this also seems inconsistent, similar obstacles are more effective in some positions than in others. A player running away from an enemy should be able to run in any direction, increasing the distance between the two actors. However when placing obstacles or traps between themselves and enemies, the player is best served by running in one of the six directions that don't have multiple shortest paths. Is there a way to rationalise this? Am I missing something that makes this behaviour consistent? Or is there a way to make this behaviour consistent? I am most certainly over-thinking this, but as it is one of my goals, I should do it due diligence.

  Read the article

• xinet vs iptables for port forwarding performance

  - by jamie.mccrindle

  I have a requirement to run a Java based web server on port 80. The options are: Web proxy (apache, nginx etc.) xinet iptables setuid The baseline would be running the app using setuid but I'd prefer not to for security reasons. Apache is too slow and nginx doesn't support keep-alives so new connections are made for every proxied request. xinet is easy to set up but creates a new process for every request which I've seen cause problems in a high performance environment. The last option is port forwarding with iptables but I have no experience of how fast it is. Of course, the ideal solution would be to do this on a dedicated hardware firewall / load balancer but that's not an option at present.

  Read the article

• Performance due to entity update

  - by Rizzo

  I always think about 2 ways to code the global Step() function, both with pros and cons. Please note that AIStep is just to provide another more step for whoever who wants it. // Approach 1 step foreach( entity in entities ) { entity.DeltaStep( delta_time ); if( time_for_fixed_step ) entity.FixedStep(); if( time_for_AI_step ) entity.AIStep(); ... // all kind of updates you want } PRO: you just have to iterate once over all entities. CON: fidelity could be lower at some scenarios, since the entity.FixedStep() isn't going all at a time. // Approach 2 step foreach( entity in entities ) entity.DeltaStep( delta_time ); if( time_for_fixed_step ) foreach( entity in entities ) entity.FixedStep(); if( time_for_AI_step ) foreach( entity in entities ) entity.FixedStep(); // all kind of updates you want SEPARATED PRO: fidelity on FixedStep is higher, shouldn't be much time between all entities update, rather than Approach 1 where you may have to wait other updates until FixedStep() comes. CON: you iterate once for each kind of update. Also, a third approach could be a hybrid between both of them, something in the way of foreach( entity in entities ) { entity.DeltaStep( delta_time ); if( time_for_AI_step ) entity.AIStep(); // all kind of updates you want BUT FixedStep() } if( time_for_fixed_step ) { foreach( entity in entities ) { entity.FixedStep(); } } Just two loops, don't caring about time fidelity in nothing other than at FixedStep(). Any thoughts on this matter? Should it really matters to make all steps at once or am I thinking on problems that don't exist?

  Read the article

• TightVNC grey screen?

  - by gary

  I'm trying to help my mom remotely with some PC problems. She's not too computer savvy, so to keep the firewall stuff on my side of things, I tried to use a reverse VNC connection: On my machine, I set up TightVNC client in listening mode. I also opened TCP port 5500 on my router and firewall, and checked it using http://canyouseeme.org/. On her machine, I (instructed her to) set up TightVNC server, and connect to my machine's IP ('Add New Client...'). Both machines run Windows XP & TightVNC 1.3.10. The problem: When she tries to connect, a TightVNC window with grey background pops up on my machine, but I never get to see the remote desktop. It just remains grey. However, it seems that I control the mouse on the remote side (she says it's moving). I tried to reverse-connect from another machine on my LAN and it works without a problem. Any idea what the problem could be?

  Read the article

• Automate proftpd-basic install on ubuntu using apt-get

  - by Bryan

  I'm trying to build a shell script to automate the installation of several packages onto an Ubuntu 10.04 server, and I'm having problems with proftpd-basic. I'm using the command line apt-get -qy install proftpd-basic >/tmp/install.log For most packages, this approach would work fine, however proftpd-basic appears to require some interaction (it asks whether to perform an inetd or standalone installation). Is it possible for me to pre-select this option on the command line somehow, as I don't want the user to be bothered by this question? - For info, if it matters, I want to choose the 'standalone' option.

  Read the article

• Monitoring IIS with SNMP

  - by Shtong

  Hello, I'm trying to monitor IIS using the Windows integrated SNMP service (for versions 2000, 2003 ans 2008 of Windows Server, but i'm doing my experiments on a 2008 R2 box). So far I was able to install the SNMP service, and query mib-2 values without problems. Now, I'm having trouble to monitor IIS informations, as the SNMP service does not seem to know about the .iso.org.dod.internet.private.enterprises.microsoft.software.internetServer OIDs. Walking the entire SNMP tree only gets the mib-2 stuff as well as the names of some services, but that's it. I did't find anything interesting in the service configuration panel. So how do I configure this service to get IIS information, or other WMI data for that matter (I installed the SNMP WMI Provider) ? I can't find any documentation about that !

  Read the article

• In Scrum, should you split up the backlog in a functional backlog and a technical backlog or not?

  - by Patrick

  In our Scrum teams we use a backlog, which mostly contains functional topics, but also sometimes contains technical topics. The advantage of having 1 backlog is that it becomes easy to choose the topics for the next sprint, but I have some questions: First, to me it seems more logical to have a separate technical backlog, where developers themselves can add pure technical items, like: we could improve performance in this method, this class lacks some technical documentation, ... By having one backlog, all developers always have to pass via the product owner to have their topics added to the backlog, which seems additional, unnecessary work for the product owner. Second, if you have a product owner that only focuses on the pure-functional items, the pure-technical items (like missing technical documentation, code that erodes and should be refactored, classes that always give problems during debugging because they don't have a stable foundation and should be refactored, ...) always end up at the end of the list because "they don't serve the customer directly". By having a separate technical backlog, and time reserved in every sprint for these pure technical items, we can improve the applications functionally, but also keep them healthy inside. What is the best approach? One backlog or two?

  Read the article

• Limiting game loop to exactly 60 tics per second (Android / Java)

  - by user22241

  So I'm having terrible problems with stuttering sprites. My rendering and logic takes less than a game tic (16.6667ms) However, although my game loop runs most of the time at 60 ticks per second, it sometimes goes up to 61 - when this happens, the sprites stutter. Currently, my variables used are: //Game updates per second final int ticksPerSecond = 60; //Amount of time each update should take final int skipTicks = (1000 / ticksPerSecond); This is my current game loop @Override public void onDrawFrame(GL10 gl) { // TODO Auto-generated method stub //This method will run continuously //You should call both 'render' and 'update' methods from here //Set curTime initial value if '0' //Set/Re-set loop back to 0 to start counting again loops=0; while(System.currentTimeMillis() > nextGameTick && loops < maxFrameskip){ SceneManager.getInstance().getCurrentScene().updateLogic(); //Time correction to compensate for the missing .6667ms when using int values nextGameTick+=skipTicks; timeCorrection += (1000d/ticksPerSecond) % 1; nextGameTick+=timeCorrection; timeCorrection %=1; //Increase loops loops++; } render(); } I realise that my skipTicks is an int and therefore will come out as 16 rather that 16.6667 However, I tried changing it (and ticksPerSecond) to Longs but got the same problem). I also tried to change the timer used to Nanotime and skiptics to 1000000000/ticksPerSecond, but everything just ran at about 300 ticks per seconds. All I'm attempting to do is to limit my game loop to 60 - what is the best way to guarantee that my game updates never happen at more than 60 times a second? Please note, I do realise that very very old devices might not be able to handle 60 although I really don't expect this to happen - I've tested it on the lowest device I have and it easily achieves 60 tics. So I'm not worried about a device not being able to handle the 60 ticks per second, but rather need to limit it - any help would be appreciated.

  Read the article

• Help with IPTables - Masquerading + Forwarding, 1-to-1?

  - by Artiom Chilaru

  I've got a clean Ubuntu Server 10.10 with OpenSSH, OpenVPN and vsFTPd installed. The server is running as a VM on the Hyper-V server (hypervisor), has two network interfaces mapped to physical adapters (eth0 and eth1), and a virtual interface with a direct connection to the hypervisor (eth2). The VPN will create a tun0 interface when a client connects. What I want is the remote user, connecting over VPN to be able to connect to the hypervisor (all ports, ping etc). The initial idea was to make the VPN create a tap0 interface, and bridge eth2 to tap0, but this didn't work, unfortunately, as it seems that the adapters don't want to go into promiscuous mode (partially confirmed by MS) At the same time, both the hypervisor and the remove client over VPN can successfully ping/connect to the ubuntu server with no problems. So my plan right now is to try doing some 1-1 masquerading, if possible. Basically, I want every request sent from the VPN client to the ubuntu server to be redurected to the hypervisor instead (with IP translation ofc), and every request from the hypervisor to the ubuntu machine sent to the VPN client (IP translated too). Only 1 client will be connected at a time to the VPN, so I can force limit it to a single IP at all times, if necessary. Is this the right way to go, and if true, how can this be achieved? It's almost like a special case of port-forwarding, except every single port on tun0 is forwarded to a machine in eth2, and every port on the eth2 side forwards to an ip on tun0 I guess it could be done with iptables, but I'm rather new in linux, so I can't do it myself... help? :(

  Read the article

• Want an iPad? How-To Geek is Giving One Away!

  - by The Geek

  That’s right. All you have to do to enter is become a fan of our Facebook page, and we’ll pick a random fan to win the prize. Once we’ve got 10,000 fans, we’ll change the prize from an iPod Touch to an iPad 16GB (typo in the image above). Everybody who is already a fan is already automatically entered in the contest!  (there’s no country restriction). So to make sure we upgrade the prize, make sure to share the How-To Geek Facebook Fan page with your friends that might be interested (don’t mindlessly spam everybody, of course). We’ve already got the iPad sitting here. Win an iPad on the How-To Geek Facebook Fan Page Similar Articles Productive Geek Tips Why Wait? Amazing New Add-on Turns Your iPhone into an iPad! [Comic]Win a Free iPod Touch in the How-To Geek Facebook Giveaway!Geek Software: Use DeliCount to Get Site-wide del.icio.us Bookmark CountsFix for Problems with How-To Geek Sidebar GadgetSet Gmail as Default Mail Client in Ubuntu TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips DVDFab 6 Revo Uninstaller Pro Registry Mechanic 9 for Windows PC Tools Internet Security Suite 2010 Will it Blend? iPad Edition Penolo Lets You Share Sketches On Twitter Visit Woolyss.com for Old School Games, Music and Videos Add a Custom Title in IE using Spybot or Spyware Blaster When You Need to Hail a Taxi in NYC Live Map of Marine Traffic

  Read the article

• "Failed to create swap space" error during installation

  - by Welsh Heron

  I've been trying to install Ubuntu for the past two days or so, but I've been running into a problem: every time I run the installation program on the LiveCD, I always get the same (or a very similar) error: "Failed to create Swap space The creation of swap space in partition #3 of SCSI5 (0,0,0)(sda) failed." So far, I've run DBAN (Darik's Boot and Nuke) on my HDD once, to make absolutely sure that everything on it had been erased. Then, I simply put in the LiveCD, and let it run the automated install. I get the above error directly after I tell it to automatically partition the HDD (it will work for a second or so, then this will pop up), forcing me back to the screen that lets me choose whether I want to automatically or manually partition the HDD. Well, after failing to install the software manually, I did a little research and learned enough about partitioning Linux to use the 'Manual partitioning' option. I partitioned the HDD as follows (it's a 1TB drive): /home - (the rest)- ext2, / - 20GB - ext2, /boot - 100MB - ext2, /swap - 8GB /EFIboot - 40MB The only difference when I tried this method was that I got THIS message: "Failed to create Swap space The creation of swap space in partition #2 of SCSI5 (0,0,0)(sda) failed." Basically, the only difference was that there was now a '2' instead of a '3'. If I may ask, what exactly am I doing wrong? I've tried looking around the internet (that's basically all I've done for the last two days), but no one seems to have the same problem that I have, and I've tried most of the solutions for similar problems (DBAN, formatting partitions in ext2 format, etc). The only thing I haven't tried is using the terminal to manually partition the HDD...and I actually DID try to do this, but I wasn't able to get past 'su' 's password demand, so I wasn't able to use the terminal. Thank you for your help in advance. ~Welsh

  Read the article

• App pool gets stuck on reset and takes .net pages out

  - by delenda

  Several times after our app pool has been told to reset, it gets stuck, the .net pages go down and the following error appears in the application event log: Failed to execute request because the App-Domain could not be created. Error: 0x80070057 The parameter is incorrect. Our app pool is scheduled to automatically reset at 4am, so the errors stay up until we manually restart the app pool. Has anyone else encountered the error or know of any solutions? Research has suggested it's a permissions issue, but the permissions don't change and the error happens infrequently. The site has no other permission based problems and the app pool identity has permission where needed.

  Read the article

• What are the risks of installing a "bad quality" package?

  - by ændrük

  When I try to install sonic-visualiser_1.9cc-1_amd64.deb via the Software Center the following warning message is displayed: The package is of bad quality The installation of a package which violates the quality standards isn't allowed. This could cause serious problems on your computer. Please contact the person or organisation who provided this package file and include the details beneath. Lintian check results for /home/ak/Downloads/sonic-visualiser_1.9cc-1_amd64.deb: Use of uninitialized value $ENV{"HOME"} in concatenation (.) or string at /usr/bin/lintian line 108. E: sonic-visualiser: wrong-file-owner-uid-or-gid usr/ 1000/1000 E: sonic-visualiser: wrong-file-owner-uid-or-gid usr/bin/ 1000/1000 E: sonic-visualiser: wrong-file-owner-uid-or-gid usr/bin/sonic-visualiser 1000/1000 E: sonic-visualiser: wrong-file-owner-uid-or-gid usr/share/ 1000/1000 E: sonic-visualiser: wrong-file-owner-uid-or-gid usr/share/applications/ 1000/1000 E: sonic-visualiser: wrong-file-owner-uid-or-gid usr/share/applications/sonic-visualiser.desktop 1000/1000 E: sonic-visualiser: wrong-file-owner-uid-or-gid usr/share/doc/ 1000/1000 E: sonic-visualiser: wrong-file-owner-uid-or-gid usr/share/doc/sonic-visualiser/ 1000/1000 E: sonic-visualiser: wrong-file-owner-uid-or-gid usr/share/doc/sonic-visualiser/CHANGELOG 1000/1000 E: sonic-visualiser: wrong-file-owner-uid-or-gid usr/share/doc/sonic-visualiser/COPYING 1000/1000 E: sonic-visualiser: wrong-file-owner-uid-or-gid usr/share/doc/sonic-visualiser/README 1000/1000 E: sonic-visualiser: wrong-file-owner-uid-or-gid usr/share/mimelnk/ 1000/1000 E: sonic-visualiser: wrong-file-owner-uid-or-gid usr/share/mimelnk/application/ 1000/1000 E: sonic-visualiser: wrong-file-owner-uid-or-gid usr/share/mimelnk/application/x-sonicvisualiser-layer.desktop 1000/1000 E: sonic-visualiser: wrong-file-owner-uid-or-gid usr/share/mimelnk/application/x-sonicvisualiser.desktop 1000/1000 E: sonic-visualiser: wrong-file-owner-uid-or-gid usr/share/pixmaps/ 1000/1000 E: sonic-visualiser: wrong-file-owner-uid-or-gid usr/share/pixmaps/sv-icon-light.svg 1000/1000 E: sonic-visualiser: wrong-file-owner-uid-or-gid usr/share/pixmaps/sv-icon.svg 1000/1000 I understand that this means the package doesn't meet Debian policy and I know how to override the warning and install the package anyway. What are the risks of doing so?

  Read the article

• Programmer + Drugs =? [closed]

  - by sytycs

  I just read this quote from Steve Jobs: "Doing LSD was one of the two or three most important things I have done in my life." Now I'm wondering: Has there ever been a study where programmers have been given drugs to see if they could produce "better" code? Is there a programming concept, which originated from people who where drug-users? Do you know of a piece of code, which was written by someone under the influence? EDIT So I did a little more research and it turns out Dennis R. Wier actually documented how he took LSD to wrap his head around a coding project: "At one point in the project I could not get an overall viewpoint for the operation of the entire system. It really was too much for my brain to keep all the subtle aspects and processing nuances clear so I could get a processing and design overview. After struggling with this problem for a few weeks, I decided to use a little acid to see if it would enable a breakthrough, because otherwise, I would not be able to complete the project and be certain of a consistent overall design"[1] There is also an interesting article on wired about Kevin Herbet, who used LSD to solve tough technical problems and chemist Kary Mullis even said "...that LSD had helped him develop the polymerase chain reaction that helps amplify specific DNA sequences." [2]

  Read the article

• Who is code wanderer?

  - by DigiMortal

  In every area of life there are people with some bad habits or misbehaviors that affect the work process. Software development is also not free of this kind of people. Today I will introduce you code wanderer. Who is code wanderer? Code wandering is more like bad habit than serious diagnose. Code wanderers tend to review and “fix” source code in files written by others. When code wanderer has some free moments he starts to open the code files he or she has never seen before and starts making little fixes to these files. Why is code wanderer dangerous? These fixes seem correct and are usually first choice to do when considering nice code. But as changes are made by coder who has no idea about the code he or she “fixes” then “fixing” usually ends up with messing up working code written by others. Often these “fixes” are not found immediately because they doesn’t introduce errors detected by compilers. So these “fixes” find easily way to production environments because there is also very good chance that “fixed” code goes through all tests without any problems. How to stop code wanderer? The first thing is to talk with person and explain him or her why those changes are dangerous. It is also good to establish rules that state clearly why, when and how can somebody change the code written by other people. If this does not work it is possible to isolate this person so he or she can post his or her changes to code repository as patches and somebody reviews those changes before applying them.

  Read the article

• Qualcomm Gobi WWAN modem no longer appears in Network Manager

  - by Andy E

  Not sure what happened here. I installed Cinnamon on my Ubuntu 12.10 environment yesterday, rebooted when finished and everything was working fine. I even used my WWAN modem after my fixed line broadband went down. However, after starting my machine this morning and seeing that my fixed line is still having problems (intermittently), I clicked the network applet and my WWAN device wasn't listed. It's not in the main network manager window either. It is still present on the system, however: $ lsusb Bus 001 Device 003: ID 05ca:18b0 Ricoh Co., Ltd Sony Vaio Integrated Webcam Bus 001 Device 004: ID 05c6:9221 Qualcomm, Inc. Gobi Wireless Modem (QDL mode) Bus 002 Device 005: ID 04e8:6865 Samsung Electronics Co., Ltd Bus 002 Device 002: ID 0409:005a NEC Corp. HighSpeed Hub Bus 003 Device 002: ID 147e:1000 Upek Biometric Touchchip/Touchstrip Fingerprint Sensor Bus 008 Device 002: ID 044e:3017 Alps Electric Co., Ltd BCM2046 Bluetooth Device Debug output from modem-manager, refers to a device that is blacklisted: modem-manager[10186]: [1355478137.024491] [mm-manager.c:866] device_added(): (tty/ttyUSB0): port's parent device is blacklisted modem-manager[10186]: [1355478137.024607] [mm-manager.c:875] device_added(): (tty/ttyS0): port's parent platform driver is not whitelisted modem-manager[10186]: [1355478137.024700] [mm-manager.c:875] device_added(): (tty/ttyS1): port's parent platform driver is not whitelisted ... I couldn't see anything relevant in the debug output for network-manager, but I've created a paste for it just in case. In /lib/udev/rules.d/77-mm-qdl-device-blacklist.rules, I found the following line that matches the device IDs from the lsusb output: # Generic Gobi QDL device ATTRS{idVendor}=="05c6", ATTRS{idProduct}=="9221", ENV{ID_MM_DEVICE_IGNORE}="1" I tried commenting out the second line and restarting network-manager/modem-manager but it didn't help. I've no idea where to go from here, does anyone else have any ideas?

  Read the article

• How can I configure a NameCheap domain to point to an Apache subfolder? [closed]

  - by Serg

  Possible Duplicate: How to make domain point to another web directory? My boss just bought the domain: sergiotapia.me for me, and agree'd the host my Wordpress blog on company servers. We're using Apache (latest version). The domain is purchased on NameCheap.com and the DNS settings are as follows: And when I visit my URL, it's getting redirected to my VPS server without problems. The thing is, I want my blog to appears at once, not have a user select the folder and then see the blog. My Wordpress blog is located at: /var/www/sergiotapia.me On IIS, you would need to edit the Bindings and map a domain to an application. I'm guessing I have to do something similar on Apache. What am I looking for here? Any tips on getting this working correctly?

  Read the article

• Introducing Programming To a Mathematician

  - by ell

  I currently am a programmer, I'm almost 16 years of age and have pretty much narrowed my careers down to something involving a Computer Science degree or Electrical Engineering degree (I know they are quite different but this question is about my friend) but my friend isn't so sure. He is very interested in maths and is very good at it and I think he would enjoy programming but he isn't willing to try it (edit he is willing to try but has never done before). Can anyone give me an suggestions for a language or tool that he could dabble in programming (at a reasonably basic level I assume) to solve maths problems or involve some kind of maths. As I say he enjoys maths a lot but I think he would enjoy programming, the problem is I don't want him to be put off by the stuff that isn't relevant at introductory levels such as memory allocation et al. I know that is very important but the point is that I want him to learn a bit of programming with maths then hopefully if he is interested enough he can start learning programming as programming. Thanks in advance, ell. Edit: Its not that he's completely uninterested - more that he hasn't actively explored the area before, maybe because he isn't informed about it. I wouldn't want to force him to do something he doesn't want to, I see this as more of a little push so that he can learn about programming. If he doesn't like it - fair enough, I can't control that and don't want to but if he turns out to enjoy it - this push will have been the right thing.

  Read the article

• I can't upgrade to 12.10 Quantal Quetzal

  - by JamesTheAwesomeDude

  After hearing about some of the features in 12.10, I decided to upgrade my Ubuntu from 12.04 LTS to the newer 12.10. However, when I try to upgrade it, I start the update manager, like always, and I start the distro upgrade, just like I do every time there's a new version, but at the end of the "Setting new software channels" stage, it fails, saying: Could not calculate the upgrade An unresolvable problem occurred while calculating the upgrade: E: Unable to correct problems, you have held broken packages. This can be caused by: Upgrading to a pre-release version of Ubuntu Running the current pre-release version of Ubuntu Unofficial software packages not provided by Ubuntu If none of this applies, then please report this bug using the command 'ubuntu-bug ubuntu-release-upgrader-core' in a terminal. What should I do? I understand that I have some sort of "broken" package on my system, but how do I identify and remove the problem? Note: At the start of the "Setting new software channels" stage, I was presented with this: Third party sources disabled Some third party entries in your sources.list were disabled. You can re-enable them after the upgrade with the 'software-properties' tool or your package manager.

  Read the article

• Troubleshooting Your Network with Oracle Linux

  - by rickramsey

  Are you afraid of network problems? I was. Whenever somebody said "it's probably the network," I went to lunch. And hoped that it was fixed by the time I got back. Turns out it wasn't that hard to do a little basic troubleshooting Tech Article: Troubleshooting Your Network with Oracle Linux by Robert Chase You're no doubt already familiar with ping. Even I knew how to use ping. Turns out there's another command that can show you not just whether a system can respond over the network, but the path the packets to that system take. Our blogging platform won't allow me to write the name down, but I can tell you that if you replace the x in this word with an e, you'll have the right command: tracxroute Once you get used to those, you can venture into the realms of mtr, nmap, and netcap. Robert Chase explains how each one can help you troubleshoot the network, and provides examples for how to use them. Robert is not only a solid writer, he is also a brilliant motorcyclist and rides an MV Augusta F4 750. About the Photograph Photo of flowers in San Simeon, California, taken by Rick Ramsey on a ride home from the Sun Reunion in May 2014. - Rick Follow me on: Personal Blog | Personal Twitter   Follow OTN Garage on: Web | Facebook | Twitter | YouTube

  Read the article

• Simultaneous AI in turn based games

  - by Eduard Strehlau

  I want to hack together a roguelike. Now I thought about entity and world representation and got to a quite big problem. If you want all the AI to act simultaneously you would normally(in cellular automa for examble) just copy the cell buffer and let all action of indiviual cells depend on the copy. Actions which are not valid anymore after some cell before the cell you are currently operating on changed the original enviourment(blocking the path) are just ignored or reapplied with the "current"(between turns) environment. After all cells have acted you copy the current map to the buffer again. Now for an environment with complex AI and big(datawise) entities the copying would take too long. So I thought you could put every action and entity makes into a que(make no changes to the environment) and execute the whole que after everyone took their move. Every interaction on this que are realy interacting entities, so if a entity tries to attack another entity it sends a message to it, the consequences of the attack would be visible next turn, either by just examining the entity or asking the entity for data. This would remove problems like what happens if an entity dies middle in the cue but got actions or is messaged later on(all messages would go to null, and the messages from the entity would either just be sent or deleted(haven't decided yet) But what would happen if a monster spawns a fireball which by itself tracks the player(in the same turn). Should I add the fireball to the enviourment beforehand, so make a change to the environment before executing the action list or just add the ball to the "need updated" list as a special case so it doesn't exist in the environment and still operates on it, spawing after evaluating the action list? Are there any solutions or papers on this subject which I can take a look at? EDIT: I don't need information on writing a roguelike I need information on turn based ai in respective to a complex enviourment.

  Read the article

• Dock with dual external DVI monitors with Intel + Nvidia Optimus?

  - by Ryan

  I have a Dell Latitude E6420 laptop plugged into a docking station, and the dock has 2 monitors (connected with DVI). Also note that I've installed Ubuntu alongside (dual-boot) Windows 7. I can't get the dual monitors to work both on Ubuntu (either 11.10 or 12.04) and Windows 7. When I run lspci | grep VGA, I get: 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) 01:00.0 VGA compatible controller: nVidia Corporation GF108 [Quadro NVS 4200M] (rev a1) If I then reboot and uncheck Optimus setting in the BIOS during reboot, I'm able to get the dual monitors to work in Ubuntu 12.04 (but I need to configure them every boot in Nvidia Settings). When I run lspci | grep VGA, I get: 01:00.0 VGA compatible controller: NVIDIA Corporation GF119 [Quadro NVS 4200M] (rev a1) But then if I reboot into Windows (leaving the Optimus unchecked), Windows can't detect external monitors, and the resolution is unacceptably low. I've seen on many forum posts that this particular graphics card setup causes lots of headaches. I haven't been able to resolve my problem yet. How can I use my external display on my laptop with intel and nvidia video cards? How to use external displays with Intel driver on a NVidia/Intel hybrid system nVidia Optimus , Unity 3D and Dual Monitors "Just use VGA instead of DVI" isn't an option because my dock has only 1 VGA port (and 2 DVI). Switching the BIOS setting on every reboot and then reconfiguring the display settings every time is tedious, time-consuming, and impractical. Do you know how to make this work smoothly? Thanks for your help! P.S. see also: http://superuser.com/questions/434358/dell-latitude-e6420-dual-boot-ubuntu-windows-7-optimus-graphics-problems

  Read the article

• Cross-platform distributed fault-tolerant (disconnected operation/local cache) filesystem

  - by Adrian Frühwirth

  We are facing a design "challenge" where we are required to set up a storage solution with the following properties: What we need HA a scalable storage backend offline/disconnected operation on the client to account for network outages cross-platform access client-side access from certainly Windows (probably XP upwards), possibly Linux backend integrates with AD/LDAP (permission management (user/group management, ...)) should work reasonably well over slow WAN-links Another problem is that we don't really know all possible use cases here, if people need to be able to have concurrent access to shared files or if they will only be accessing their own files, so a possible solution needs to account for concurrent access and how conflict management would look in this case from a user's point of view. This two years old blog posts sums up the impression that I have been getting during the last couple of days of research, that there are lots of current übercool projects implementing (non-Windows) clustered petabyte-capable blob-storage solutions but that there is none that supports disconnected operation nicely and natively, but I am hoping that we have missed an obvious solution. What we have tried OpenAFS We figured that we want a distributed network filesystem with a local cache and tested OpenAFS (which, as the only currently "stable" DFS supporting disconnected operation, seemed the way to go) for a week but there are several problems with it: it's a real pain to set up there are no official RHEL/CentOS packages the package of the current stable version 1.6.5.1 from elrepo randomly kernel panics on fresh installs, this is an absolute no-go Windows support (including the required Kerberos packages) is mystical. The current client for the 1.6 branch does not run on Windows 8, the current client for the 1.7 does but it just randomly crashes. After that experience we didn't even bother testing on XP and Windows 7. Suffice to say, we couldn't get it working and the whole setup has been so unstable and complicated to setup that it's just not an option for production. Samba + Unison Since OpenAFS was a complete disaster and no other DFS seems to support disconnected operation we went for a simpler idea that would sync files against a Samba server using Unison. This has the following advantages: Samba integrates with ADs; it's a pain but can be done. Samba solves the problem of remotely accessing the storage from Windows but introduces another SPOF and does not address the actual storage problem. We could probably stick any clustered FS underneath Samba, but that means we need a HA Samba setup on top of that to maintain HA which probably adds a lot of additional complexity. I vaguely remember trying to implement redundancy with Samba before and I could not silently failover between servers. Even when online, you are working with local files which will result in more conflicts than would be necessary if a local cache were only touched when disconnected It's not automatic. We cannot expect users to manually sync their files using the (functional, but not-so-pretty) GTK GUI on a regular basis. I attempted to semi-automate the process using the Windows task scheduler, but you cannot really do it in a satisfactory way. On top of that, the way Unison works makes syncing against Samba a costly operation, so I am afraid that it just doesn't scale very well or even at all. Samba + "Offline Files" After that we became a little desparate and gave Windows "offline files" a chance. We figured that having something that is inbuilt into the OS would reduce administrative efforts, helps blaming someone else when it's not working properly and should just work since people have been using this for years. Right? Wrong. We really wanted it to work, but it just doesn't. 30 minutes of copying files around and unplugging network cables/disabling network interfaces left us with (silent! there is only a tiny notification in Windows explorer in the statusbar, which doesn't even open Sync Center if you click on it!) undeletable files on the server (!) and conflicts that should not even be conflicts. In the end, we had one successful sync of a tiny text file, everything else just exploded horribly. Beyond that, there are other problems: Microsoft admits that "offline files" in Windows XP cannot cope with "large files" and therefore does not cache/sync them at all which would mean those files become unavailable if the connection drop In Windows 7 the feature is only available in the Professional/Ultimate/Enterprise editions. Summary Unless there is another fault-tolerant DFS that supports Windows natively I assume that stacking a HA Samba cluster on top of something like GlusterFS/Lustre/whatnot is the only option, but I hope that I am wrong here. How do other companies allow fault-tolerant network access to redundant storage in a heterogeneous environment with Windows?

  Read the article

• Best CMS to handle short snippets of text?

  - by Federico Poloni

  I have to install a CMS to manage a set of mathematical problems, i.e., our main content will be short (~3 lines) snippets of text. We need the ability to add comments and categories/tags, possibly with a powerful search function combining different constraints on the categories. A crucial ability is the possibility to combine the results of a search in the same page to produce a (printable) problem sheet: not many CMS's seem to be able to do so, and it is difficult for me to test every one for this specific function. Do you guys know of a CMS that is capable to return formatted search result in this fashion? Thanks in advance!

  Read the article

< Previous Page | 546 547 548 549 550 551 552 553 554 555 556 557  | Next Page >