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External display resolution issue

- by Steven

I'm new to Ubuntu. I've 'dabbled' in the past but Windows was annoying me too much so I finally made the change. One thing I use my laptop for is outputting the screen onto an external monitor. In Windows this usually works fine (but when there is an issue, it's a pain to resolve and has crashed my computer on many occasions). In Ubuntu it's a very simple case of "plug and play" because it displays the content immediately with no major problems. However, I can only alter the resolution of the external display to 4:3 formats, whereas the external monitor is 16:9, so the picture is stretched. In Windows there's loads of resolutions to choose from. If I disable the laptop's screen, it still doesn't allow me to display the correct resolution externally (on VGA). Further to that, if I close the laptop it keeps the external screen as it is, but when I reopen the laptop, the laptop screen doesn't turn back on until I restart. If it's a video I am watching, I can use VLC to alter the aspect ratio so the video looks fine, but it's quite an annoying work around. I used terminal to find my graphics controller, which is "Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller [8086:2a42] (rev 07)" (not great, I know... the laptop was a free gift with my mobile!) Any idea of how I can get the resolution on the external monitor to be correct?

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Help me choose an Open-Source license

- by Spartan-117A

So I've done lots of open-source work. I have released many projects, most of which have fallen under GPL, LGPL, or BSD licensing. Now I have a new project (an implementation library), and I can't find a license that meets my needs (although I believe one may exist, hence this question). This is the list of things I'm looking for in the license. Appropriate credit given for ALL usage or derivative works. No warranty expressed or implied. The library may be freely used in ANY other open-source/free-software product (regardless of license, GPL, BSD, EPL, etc). The library may be used in closed-source/commercial products ONLY WITH WRITTEN PERMISSION. GPL - Useless to me, obviously, as it completely precludes any and all closed-source use, violating requirement (4). BSD/LGPL/MIT - Won't work, because they wouldn't require closed-source developers to get my permission, violating requirement (4). If it wasn't for that, BSD (FreeBSD in particular) would look like a good choice here. EPL/MPL - Won't work either, as the code couldn't be combined with GPL-code, therefore violating requirement (3). Also I'm pretty sure they allow commercial works without asking permission, so they don't meet (4) either. Dual-licensing is an option, but in that case, what combination would hold to all four requirements? Basically, I want BSD minus the commercial use, plus an option to use in commercial/closed-source as long as the developer has my written permission. EDIT: At the moment, thinking something like multiple-licensing under GPL/LGPL plus something else for commercial?

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Is a 302 redirect to a random URL from the homepage an SEO problem?

- by CookieMonster

I originally posted this on Stackoverflow, but I believe here is a better place to ask. My web application is very similar to notepad.cc which redirects to a randomly generated URL upon access, e.g. http://myapp.com/roTr94h4Gd. (Please note that notepad.cc is not my site.) Probably because of this redirect feature, when I do "fetch as Google" or "fetch as Bingbot", I get a 302 and no html content. Not even a <html></html> tag. HTTP/1.1 302 Moved Temporarily Server: nginx/1.4.1 Date: Tue, 01 Oct 2013 04:37:37 GMT Content-Type: text/html Transfer-Encoding: chunked Connection: keep-alive X-Powered-By: PHP/5.4.17-1~dotdeb.1 Set-Cookie: PHPSESSID=vp99q5e5t5810e3bnnnvi6sfo2; expires=Thu, 03-Oct-2013 04:37:37 GMT; path=/ Expires: Thu, 19 Nov 1981 08:52:00 GMT Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0 Pragma: no-cache Location: /roTr94h4Gd How should I avoid 302 in this case? I suppose I could modify my site to prevent the redirect, but it is a necessary feature of my web app to generate a random URL on each access. I added <meta name="fragment" content="!"> tag into my index page and set it to return a static snapshot of my page when the flag is set. But this still returns a 302. I also added a header to return 200 before redirecting, but this had no effect, either. Could someone tell me a good suggestion to solve this problem?

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Is it possible to have multiple subdomains point to the same Blogger blog?

- by cclark

For our application we want to have a status page which is hosted outside of the rest of our infrastructure so in case there are issues in our data center we can post updates for our users and our users will be able to access them. We registered a blog on Blogger and set it up with xyzstatus.blogspot.com and status.xyz.com. Everything seems to work fine. We need to perform some maintenance at our datacenter which will sever all connectivity so we're unable to have a redirect using nginx or apache. We'd like to do this with a short TTL CNAME DNS entry. Ideally www.xyz.com and app.xyz.com could be CNAMEd to status.xyz.com. When I setup the CNAME and go to that URL I get a Google broken robot 404 page. I figure I must need to let Google know it should associate traffic to www.xyz.com and app.xyz.com to the blog served up by status.xyz.com. But I can't see anywhere to do this in Blogger. Does anyone know if this is possible?

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tail -f updates slowly

- by Cliff

I'm not sure why, but on my Macbook Pro running lion I get slow updates when I issue "tail -f" on a log file that is being written to. I used to use this command all the time at my last company but that was typically on Linux machines. The only thing I can think of that would possibly slow the updates are buffering of output and/or maybe a different update interval on a Mac vs. Linux. I've tried with several commands all which write to stout relatively quickly but give slow updates to the tail command. Any ideas? Update I am merely running a python script with a bunch of prints in it and redirecting to a file vi " my output.log". I expect to see updates near real time but that doesn't seem to be the case.

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Why does my root filesystem keep becoming read-only?

- by Scott Severance

I've lately been having an issue with my root filesystem becoming readonly. It happens some amount of time after boot. I don't know exactly when it happens, as I don't usually notice it until something such as suspending the computer or printing fails. It seems to be fairly random. Since most of my system is on that partition, I can't re-mount it without rebooting. After this happens, the system runs a fsck. Sometimes it prompts to fix problems; other times it apparently finds none. To troubleshoot, I've searched through the logs but found nothing relevant. This might be due in part to not knowing when the actual errors took place. The filesystem is apparently good to begin with, as when fsck runs its fixes it doesn't report any errors. I've scanned the disk with SpinRite. A while ago, SpinRite found and recovered from some bad sectors on the hard drive. I ran a level 4 scan (a thorough scan) after this probem appeared, but SpinRite found nothing. The SMART data reports that the disk is OK with 63 bad sectors. The number of bad sectors hasn't changed recently. I realize that the disk isn't in the best of conditions, and I have complete backups in case of catastrophic failure. Yet the lack of errors in the logs, combined with SpinRite's test results and the unchanged SMART data makes me think that this problem has some cause other than disk failure. Other than disk failure, what could cause my symptoms?

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World Location issues with camera and particle

- by Joe Weeks

I have a bit of a strange question, I am adapting the existing code base including the tile engine as per the book: XNA 4.0 Game Development by example by Kurt Jaegers, particularly the aspect that I am working on is the part about the 2D platformer in the last couple of chapters. I am creating a platformer which has a scrolling screen (similar to an old school screen chase), I originally did not have any problems with this aspect as it is simply a case of updating the camera position on the X axis with game time, however I have since added a particle system to allow the players to fire weapons. This particle shot is updated via the world position, I have translated everything correctly in terms of the world position when the collisions are checked. The crux of the problem is that the collisions only work once the screen is static, whilst the camera is moving to follow the player, the collisions are offset and are hitting blocks that are no longer there. My collision for particles is as follows (There are two vertical and horizontal): protected override Vector2 horizontalCollisionTest(Vector2 moveAmount) { if (moveAmount.X == 0) return moveAmount; Rectangle afterMoveRect = CollisionRectangle; afterMoveRect.Offset((int)moveAmount.X, 0); Vector2 corner1, corner2; // new particle world alignment code. afterMoveRect = Camera.ScreenToWorld(afterMoveRect); // end. if (moveAmount.X < 0) { corner1 = new Vector2(afterMoveRect.Left, afterMoveRect.Top + 1); corner2 = new Vector2(afterMoveRect.Left, afterMoveRect.Bottom - 1); } else { corner1 = new Vector2(afterMoveRect.Right, afterMoveRect.Top + 1); corner2 = new Vector2(afterMoveRect.Right, afterMoveRect.Bottom - 1); } Vector2 mapCell1 = TileMap.GetCellByPixel(corner1); Vector2 mapCell2 = TileMap.GetCellByPixel(corner2); if (!TileMap.CellIsPassable(mapCell1) || !TileMap.CellIsPassable(mapCell2)) { moveAmount.X = 0; velocity.X = 0; } return moveAmount; } And the camera is pretty much the same as the one in the book... with this added (as an early test). public static void Update(GameTime gameTime) { position.X += 1; }

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Trying to install Proprietory Nvidia Graphics Drivers

- by Peter Snow

After reading and trying many different suggestions for some hours, I returned to this how-to: https://help.ubuntu.com/community/BinaryDriverHowto/Nvidia The first problem I encounter is how to identify which of the listed drivers support my Nvidia GEForce 630M graphics card. Following the links doesn't really help, since it is not stated there either (except where support for a new driver was added later which is explicitly stated, but the original devices covered are not). However, even if I knew, if it doesn't appear in the 'Additional Drivers' dialogue (see below), how will I install it? Second Issue: The article goes on to say that available drivers for my hardware are usually listed in 'Additional Drivers'. In my case, they aren't. Unfortunately, it doesn't tell me how to correct that or work around it? I've checked the bios and there is no way offered there to disable the integrated graphics, only the Nvidia graphics. I've also tried each available option in this: $ sudo update-alternatives --config i386-linux-gnu_gl_conf My system is an Acer Aspire 4752G bought May 2012. I'm running Ubuntu 12.04LTS. uname -a : 3.2.0-38-generic-pae #61-Ubuntu SMP Tue Feb 19 12:39:51 UTC 2013 i686 i686 i386 GNU/Linux It's 64bit hardware but I installed 32bit OS for greater software compatibility. Running $ sudo tail -fn 500 /var/log/Xorg.0.log | grep '(EE)' returns" (WW) warning, (EE) error, (NI) not implemented, (??) unknown. [ 28.886] (EE) Failed to initialize GLX extension (Compatible NVIDIA X driver not found) The reason for wanting the proprietor y drivers is because my laptop comes with 3D accelerated graphics adaptor and so rather than confining myself to struggling with the on-board graphics, I would rather use it. I also want to experiment with using it for bitmining (which uses the GPU's for computing power).

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Removing (Presumably) Extraneous Network Adapters from Device Manager (eg WAN Miniport)

- by Synetech inc.

Can anyone shed some light on the default items in the Network Adapters branch of the Windows Device Manager? In addition to the network card, there are always a bunch of other things that I cannot find any useful information on such as RAS Asynch Adapter and all the WAN Miniports (IKEv2, IP(v6), L2TP, Network Monitor, PPPOE, PPTP, SSTP). I would like to trim it down and uninstall whatever possible but cannot find out exactly what these items are responsible for (and therefore whether or not they are needed on my system). Most of the pages found with Google are either people trying to fix an error with such an item or someone asking what it is and being given an unhelpful, pat response like “just leave them alone” or “they’re necessary”. I highly doubt that is the case and I’m certain that at least some items can be removed because even if they become necessary in the future they can be added again (for example installing Network Monitor or Protowall reinstalls the miniport drivers anyway).

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Looking for Mini itx capable of running Photoshop + Illustrator (cs4 or higher)

- by drozzy

Ok, so I want to build a small pc for my gf that she can take with her instead of the crappy laptop that she has. Overall I think the complete system should not weight more than 10 lbs. The requirements are to run at least 4 applications simultaneously, and be able to switch between them with no problems: Photoshop Illustrator Word editor Browser Should be able to handle 1920x1200 resolution. I am currently looking at LGA775 socket as I can just transfer my desktop cpu Q6600 to it. Currently deciding between DQ45EK and DG41TX, but any other suggestions are welcome. So I am thinking something along the lines of: MINI-BOX M350 Case with 90 watt psu Q6600 cpu (my desktop cpu) 2x2GB kingston ram (or similar) Video? Need external or built-in G45 on DQ45EK will do? My primary concern is whether the 90WATT is sufficient of the Q6600? Thanks

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How do ulimit -n and /proc/sys/fs/file-max differ?

- by bantic

I notice that on a new CentOS image that I just booted up off of EC2 that the ulimit default is 1024 open files, but /proc/sys/fs/file-max is set at 761,408 and I'm wondering how these two limits work together. I'm guessing that ulimit -n is a per-user limit of number of file descriptors while /proc/sys/fs/file-max is system-wide? If that's the case, say I've logged in twice as the same user -- does each logged-in user have a 1024 limit on number of open files, or is it a limit of 1024 combined open files between each of those logged-in users? And is there much performance impact to setting your max file descriptors to a very high number, if your system isn't ever opening very many files?

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Difference between tc qdisc and netdev_max_backlog

- by Mediocre Gopher

I'm wondering what the difference between these two things on linux is. According to the docs tc qdisc can be used to set the queue size for egress and ingress packets coming in and out of the NIC (or that's how I understood it). But from what I understand netdev_max_backlog can also be used to set this. If I were to set both of them which would be used? Or are there actually two queues that are being manipulated in this case? If there are two queues, which queue is above the other (if the application is at the top and the hardware at the bottom)?

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What went wrong with my curl install?

- by Danjah

I'm fresher than the prince to Linux, I've been following the instructions here: http://chrisfulstow.com/running-node-js-on-windows-with-virtualbox-and-ubuntu (the link tells what I am generally trying to do). I'm all up and running in VBox, and am at the curl install part, I may have done the curl part a week ago I forget. So I ran this command anyway: danjah@danjah-VirtualBox:~$ sudo apt-get install curl Result: [sudo] password for danjah: Reading package lists... Done Building dependency tree Reading state information... Done curl is already the newest version. 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. Then: $ curl http://npmjs.org/install.sh | sudo npm_install=rc sh Result: fetching: { gzip: stdin: unexpected end of file /bin/tar: Child returned status 1 /bin/tar: Error is not recoverable: exiting now It failed Should I be concerned? How can I test curl? How can I avoid these situations? Perhaps there's a generic way of checking to see if I've already installed packages/etc? Case specific answers and general advice most appreciated. cheers, d

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How to setup a tunneled connection to a NAS?

- by Jan

Hi there, While looking into alternatives for Dropbox I explored the idea of a NAS. It would be easy to hook up the NAS to a broadband connection and have the users access the files. However, - The data needs to be encrypted on the NAS itself (in case it gets stolen). - The connection to the NAS needs to be secure (VPN?). - The drive needs to appear as a drive under windows (so no https). Any ideas? Thanks in advance, I can't seem to find the final solution! Jan

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Quake 3 won't install on Windows 7

- by Ernest Friedman-Hill

Today I tried to install Quake 3 from my original 1999 CD on a Windows 7 laptop. Windows 7 resolutely refused to run the installer, helpfully explaining that I might need a 32- or 64-bit version, depending on what my OS is (you have to love those Windows error messages: absolutely correct, but as unhelpful as humanly possible). In any case, of course the 1999 software is 32-bit, and the laptop is 64-bit. But I was pretty sure that 64-bit Windows versions could handle running 32-bit software. What gives?

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SOCKS Proxy and HTTP Proxy considerations with push notifications

- by J.Ashworth

I'm working with push notifications in a mobile application, and I've been informed that a lot of our clients may be using SOCKS or HTTP proxies for outbound and inbound traffic. Is there anything in particular I need to program or document with regards to deploying our mobile app in this sort of environment? If you were setting up and installing the application server, what guarantees would you want from the person that had programmed it? Specifically regarding push notification services for all four major OSes (APNS, GCM, BPS and MPNS). I've got absolutely no experience with proxies or server deployment, in case you couldn't tell :)

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windows hosted networok on windows 8

- by tanmaysingh

my sister is using Acer laptop, that has an intel WLAN card and supports windows hosted network(checked in command prompt).Am using the basic way using netsh wlan command also, then am using netsh start wlan command.The hosted network gets created and it could b seen in "Network and Sharing Center" as the . I also went to Device manager, selected WLan card, made sure"allow this device to wake computer from sleep" is selected. Now I went to the newly created , clicked properties, and under sharing enabled allow this to be shared(but I am not able to select The name of the wifi my sis wants to share (in this case her college wifi name, LEts say QP4,Ethernet and Local Area connection are the only two option that are coming). Also the SSID name is not being shown in her mobile nor when I click the tower icon at the tray area,Any suggestions on what might be going wrong?She is using windows 8. Should I look for updated drivers? Her laptop is only 6 months old, i don't think the drivers are outdated. Any advice shall be appreciated.

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error 0x80070522. not able to create a file in c:\ directory

- by Abbas

Hello Everybody... "error 0x80070522. not able to create a file in c:\ directory" One of our customers has just found a problem when trying to create a file on the root of the C:\ Drive, on a Windows 7 Professional PC. I know they shouln't be keeping files here, but there is a valid reason in this case, so I've relaxed the security on the root of C:\ by giving the group 'users' modify permission. Before I relaxed the security, the user was receiving 'access denied', but now they are receiving the message: An unexpected error is keeping you from creating the file. If you continue to recieve this error, you can use the error code to search for help with this problem. Error 0x80070522: A required priviledge is not held by the client. Googling for this suggests that it is caused by UAC, but how can I get round this when the user doesn't have admin rights on their PC? So did you find a solution for this issue ?? Please its urgent to my accountant software..

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ATI Radeon HD 5770 Cooling

- by Murtez

I have a Radeon HD 5770 manufactured by ATI. In the course of using compressed air to clean it the fan shattered. I put a case fan on the card to cool it, but it's not doing a great job; the temperature goes to nearly 100 sometimes. The card is not overclocked or anything, the PC itself is clean. I looked around for a third party cooling system but the only one I found was the Accelero L2 Pro. It's low on stock and I don't know how great it will be, some review say it may not fit on all 5770 cards. Does anyone know of another one that will work? Help is much appreciated.

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Logon script does not run for all users

- by Herohtar

We have a standalone common-use workstation running Windows XP Pro SP3 and have created a script using Javascript (scriptname.js) that is to be run for each user. The file was added as a user logon script via gpedit.msc and tested using a newly created user account as well as an existing user account. The script ran and functioned as intended on both accounts; however, a few existing users have informed us that the script is not running on their accounts. All user accounts are members of the same groups and have identical permissions. We already have an existing script (but in this case, a batch file) that is applied in the same manner and it runs for all accounts without any problems. Furthermore, on the accounts where the new script does not run during logon, it can still be run manually and works fine. So the question is: what would cause this script to not run during logon on certain accounts? Thanks!

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How should I track approval workflow when users at every security level can create a request?

- by Eric Belair

I am writing a new application that allows users to enter requests. Once a request is entered, it must follow an approval workflow to be finally approved by a user the highest security level. So, let's say a user at Security Level 1 enters a request. This request must be approved by his superior - a user at Security Level 2. Once the Security Level 2 user approves it, it must be approved by a user at Security Level 3. Once the Security Level 3 user approves it, it is considered fully approved. However, users at any of the three Security Levels can enter requests. So, if a Security Level 3 user enters a request, it is automatically considered "fully approved". And, if a Security Level 2 user enters a request, it must only be approved by a Security Level 3 user. I'm currently storing each approval status in a Database Log Table, like so: STATUS_ID (PK) REQUEST_ID STATUS STATUS_DATE -------------- ------------- ---------------- ----------------------- 1 1 USER_SUBMIT 2012-09-01 00:00:00.000 2 1 APPROVED_LEVEL2 2012-09-01 01:00:00.000 3 1 APPROVED_LEVEL3 2012-09-01 02:00:00.000 4 2 USER_SUBMIT 2012-09-01 02:30:00.000 5 2 APPROVED_LEVEL2 2012-09-01 02:45:00.000 My question is, which is a better design: Record all three statuses for every request ...or... Record only the statuses needed according to the Security Level of the user submitting the request In Case 2, the data might look like this for two requests - one submitted by Security Level 2 User and another submitted by Security Level 3 user: STATUS_ID (PK) REQUEST_ID STATUS STATUS_DATE -------------- ------------- ---------------- ----------------------- 1 3 APPROVED_LEVEL2 2012-09-01 01:00:00.000 2 3 APPROVED_LEVEL3 2012-09-01 02:00:00.000 3 4 APPROVED_LEVEL3 2012-09-01 02:00:00.000

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My 4 GB microSD card only allows me to use 1 GB

- by James Litewski

My phone came with a 4 GB microSD card. On the card it lists that 3 GB goes to Muve Music which is Cricket's music program, and I get 1 GB... Well, I don't pay for Muve Music, so why waste the space? I thought I'd be able to simply buy an adapter and reformat the microSD card to get the full 4 GB; but that wasn't the case... I could only find the 1 GB partition on the card. I even tried reformatting the disk, but I had no luck. How can I get the full 4 GB? BTW, I'm running Mac OS X v10.7 (Lion).

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Recommendations for stable, reliable flash drives

- by Josh Kelley

We're looking to purchase some flash drives for use in some embedded devices. Most of our requirements aren't too different the generic "good, fast" flash drive: reliability is very important, speed is good, and so that the drive will fit, the case shouldn't be too large (so no OCZ Throttles). Consistency is also a major priority; we'd like to be able to buy more or less the same product a year or two from now without having to worry about the manufacturer swapping drive components with less reliable or slower parts. (We've been burned already by our previous manufacturer doing this.) Any recommendations, especially regarding consistency? I can read Ars Technica to get an overview of current models, but what are consistently good models?

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Virtualizing Firewalls/UTM

- by TheD

So Sophos UTM (Astaro Gateway UTM) can be virtualized in Hyper-V, VMWare, vSphere etc. Now I'm new to virtualization, so am wondering how the networking would be configured in this situation. Imagine the following (a very simple setup). A Zyxel router acting as the default gateway, standard ADSL line. This is connected directly via Ethernet to my VHost, Hyper-V in my case. Now I assume I need two virtual network adapters, one which is the "External" interface to the firewall, and the other being the "Internal" interface. But where does my switch go, since I have 5 machines (or X number of machines). Where is the switch connected, to the internal interface on the VHost? What default gateway do my clients use etc? How would the routing work if these two interfaces weren't bridged since they are virtual networks anyway. I'm a little confused! Any advice is much appreciated! Cheers

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Most suited technology for browser games?

- by Tingle

I was thinking about making a 2D MMO which I would in the long run support on various plattforms like desktop, mac, browser, android and ios. The server will be c++/linux based and the first client would go in the browser. So I have done some research and found that webgl and flash 11 support hardware accelerated rendering, I saw some other things like normal HTML5 painting. So my question is, which technology should I use for such a project? My main goal would be that the users have a hassle free experience using what there hardware can give them with hardware acceleration. And the client should work on the most basic out-of-the-box pc's that any casual pc or mac user has. And another criteria would be that it should be developer friendly. I've messed with webgl abit for example and that would require writing a engine from scratch - which is acceptable but not preferred. Also, in case of non-actionscript, which kind language is most prefered in terms of speed and flexability. I'm not to fond of javascript due to the garbage collector but have learned to work around it. Thank you for you time.

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