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• Ubuntu Nvidia Xorg Twinview doesnt like my monitors

  - by Andrew Bolster

  Basically, using the latest available ubuntu drivers (195.36.15) I cannot for the life of me get my two monitors to operate at suitable resolutions. When not using the drivers atall and going single-screen, both monitors support 1680x1050, but this option is only shown for one monitor in nvidia-settings, and when i manually add a metamode into the xorg.conf, it just gives up initialising the second screen. (**) Mar 25 15:49:47 NVIDIA(0): TwinView enabled (II) Mar 25 15:49:47 NVIDIA(0): Assigned Display Devices: CRT-0, CRT-1 (II) Mar 25 15:49:47 NVIDIA(0): Validated modes: (II) Mar 25 15:49:47 NVIDIA(0): "1680x1050,1680x1050" (II) Mar 25 15:49:47 NVIDIA(0): Virtual screen size determined to be 1680 x 1050 Any ideas?

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• Ubuntu Nvidia Xorg Twinview doesnt like my monitors

  - by Andrew Bolster

  Basically, using the latest available ubuntu drivers (195.36.15) I cannot for the life of me get my two monitors to operate at suitable resolutions. When not using the drivers atall and going single-screen, both monitors support 1680x1050, but this option is only shown for one monitor in nvidia-settings, and when i manually add a metamode into the xorg.conf, it just gives up initialising the second screen. (**) Mar 25 15:49:47 NVIDIA(0): TwinView enabled (II) Mar 25 15:49:47 NVIDIA(0): Assigned Display Devices: CRT-0, CRT-1 (II) Mar 25 15:49:47 NVIDIA(0): Validated modes: (II) Mar 25 15:49:47 NVIDIA(0): "1680x1050,1680x1050" (II) Mar 25 15:49:47 NVIDIA(0): Virtual screen size determined to be 1680 x 1050 Any ideas?

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• Strange mesh import problem with Assimp and OpenGL

  - by Morgan

  Using the assimp library for importing 3D data into an OpenGL application. I get some strange problems regarding indexing of the vertices: If I use the following code for importing vertex indices: for (unsigned int t = 0; t < mesh->mNumFaces; ++t) { const struct aiFace * face = &mesh->mFaces[t]; if (face->mNumIndices == 3) { indices->push_back(face->mIndices[0]); indices->push_back(face->mIndices[1]); indices->push_back(face->mIndices[2]); } } I get the following result: Instead, if I use the following code: for(int k = 0; k < 2 ; k++) { for (unsigned int t = 0; t < mesh->mNumFaces; ++t) { const struct aiFace * face = &mesh->mFaces[t]; if (face->mNumIndices == 3) { indices->push_back(face->mIndices[0]); indices->push_back(face->mIndices[1]); indices->push_back(face->mIndices[2]); } } } I get the correct result: Hence adding the indices twice, renders the correct result? The OpenGL buffer is populated, like so: glBufferData(GL_ELEMENT_ARRAY_BUFFER, indices->size() * sizeof(unsigned int), indices->data(), GL_STATIC_DRAW); And rendered as follows: glDrawElements(GL_TRIANGLES, vertexCount*3, GL_UNSIGNED_INT, indices->data());

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• Image with FadeIn effect blinks when added to scene

  - by Ef Es

  I am trying to add an image to the scene, but it should just be added to the scene invisible, FadeIn and then be deleted when the effect finishes. My problem is that the images blink once when they are added to the scene, then they do the intended effect. My best guess is that when they are added they show on the scene for a split second before starting the animation. I though of making them invisible for a split second before activating them, but I am not sure how to code it. const bool Sunbeams::add() { const CCSize kSceenSize = CCDirector::sharedDirector()->getWinSize(); const int nRayType = random( m_kRays.size()); const CCPoint kPosition( random( static_cast < int >( kSceenSize.width)), 0.0f); const float fDuration = random( m_fDurationVariance) + m_fDurationMin; CCSprite* pkLightBeam = CCSprite::spriteWithTexture( m_kRays[nRayType]); if ( !pkLightBeam) { msg::debug( "Sunbeams::add", "Failed to create sprite from ray '%d'!\n", m_kRays[nRayType]); return false; } pkLightBeam->setAnchorPoint( CCPointZero); pkLightBeam->setPosition( kPosition); m_kActiveBeams.push_back( pkLightBeam); CCDirector::sharedDirector()->getRunningScene()->addChild( pkLightBeam); CCActionInterval* pkAction = CCFadeIn::actionWithDuration( fDuration); CCActionInterval* pkActionBack = pkAction->reverse(); pkLightBeam->runAction( CCSequence::actions( pkAction, pkActionBack, 0)); return true; }

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• How to move unseen windows => Cannot access my application after switching monitors

  - by Stephane Rolland

  I switch monitors really often: At work I have a very poor computer, and gpu too, which is bad at keeping its configuration, resolution and monitor position between each reboot. Both monitor are different size and resolution. When doing that I often have applications that were on one of the monitors that remember their last position opened... so now they are unseen, at screen coordinates I cannot access. I know there is a shortcut that can access the move functionnality of a window. Could you remind it to me. Do you have other trick to center all opened windows into the visible screens ?

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• What happens to a PDF file when you save it as a static PDF file?

  - by JimDel

  Does anyone know what happens to a PDF file when you save it as a static PDF file? I have a 17K PDF file that doesn’t work will with my software. But when I save it as a Static PDF using Adobe Live Cycle, the file works just fine. But it’s significantly larger (327K). Because these file will be download over the web, I really want to keep the size down. I have hundreds of files like this. If I knew what happens to the file when it’s converted I might be in better shape. Thanks

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• Data Recovery needed with a Sector Zero problem on a HDD

  - by Jay Robins

  Left my computer (running XP) copying files to an external drive. Came back a few hours later, and the laptop was pretty hot and had frozen (Ironic aint it). Forced a reboot, and the laptop HDD hasnt worked since. Set it up in an external enclosure, but XP cant mount the HDD to a drive letter, but is able to recognize the manufacturer and drive size (Hitachi-320GB). No noise or rattling when the drive is spinning, but I cant get anything off of it, since i cant mount it, or see much of anything. Computer repair shop ran some software tests and says it came back with a "Zero Sector bad" message, and need to send it to a professional data recovery service. Any other options or ideas, before I have to spend thousands of dollars to recover my data? Any help would be GREATLY appreciated!!! I'm desperate and a poor student! Thanks in Advance, -Jay

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• '"Windows Backend object has no attribute 'iso-path' - see log for details.' error when trying to install

  - by Raja

  I am trying to install Ubuntu 11.10 in windows XP, Everything went as before until the countdown clock reached zero, then I got "Windows Backend object has no attribute 'iso-path' - see log for details. It's done it three times now. (Formatting in between) The end of the log says ====== 11-01 17:20 DEBUG TaskList: New task check_iso 11-01 17:20 DEBUG TaskList: ### Running check_iso... 11-01 17:20 DEBUG CommonBackend: Checking Y:\ubuntu\install\installation.iso 11-01 17:20 DEBUG Distro: checking Ubuntu ISO Y:\ubuntu\install\installation.iso 11-01 17:20 DEBUG Distro: wrong size: 8094031872 > 900000000 11-01 17:20 DEBUG TaskList: ### Finished check_iso 11-01 17:20 ERROR TaskList: 'WindowsBackend' object has no attribute 'iso_path' Traceback (most recent call last): File "\lib\wubi\backends\common\tasklist.py", line 197, in __call__ File "\lib\wubi\backends\common\backend.py", line 579, in get_iso File "\lib\wubi\backends\common\backend.py", line 565, in use_iso AttributeError: 'WindowsBackend' object has no attribute 'iso_path' 11-01 17:20 DEBUG TaskList: # Cancelling tasklist 11-01 17:20 DEBUG TaskList: # Finished tasklist 11-01 17:20 ERROR root: 'WindowsBackend' object has no attribute 'iso_path' Traceback (most recent call last): File "\lib\wubi\application.py", line 58, in run File "\lib\wubi\application.py", line 130, in select_task File "\lib\wubi\application.py", line 205, in run_cd_menu File "\lib\wubi\application.py", line 120, in select_task File "\lib\wubi\application.py", line 158, in run_installer File "\lib\wubi\backends\common\tasklist.py", line 197, in __call__ File "\lib\wubi\backends\common\backend.py", line 579, in get_iso File "\lib\wubi\backends\common\backend.py", line 565, in use_iso AttributeError: 'WindowsBackend' object has no attribute 'iso_path'

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• How do I boot Ubuntu Cloud images in vmware?

  - by Graham

  I want to run an Ubuntu cloud image on on VMWare. I've gotten pretty far but want to know how to set the OVF properties in a way that VMWare understands in order to pass parameters to cloud-init. This is what I've done: Install VMWare Player 4.0.4, using the vmware workstation 8.0.2 / player 4.0.2 fix for linux 3.2+ patch to get around the compilation failure for virtual ethernet module. Download precise-server-cloudimg-amd64.ovf, and also the QCOW2 .img file (220MB) Run qemu-img convert -O vmdk precise-server-cloudimg-amd64-disk1.img precise-server-cloudimg-amd64-disk1.vmdk to convert the image from QCOW2 to VMDK Edit the OVF to change the extension and ovf:size on the <File> element and set ovf:format="http://www.vmware.com/interfaces/specifications/vmdk.html#sparse" on the <Disk> element. Edit the OVF to remove all the <Property> elements because vmplayer was complaining about unrecognised elements. Run the OVF in vmplayer. Alternatively, run ovftool to convert to vmx and run the vmx. Unfortunately I can't log in as "ubuntu" at the prompt because the OVF properties haven't been provided to cloud-init. How should I do this?

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• What WYSIWYG software can I use to create a web page?

  - by Roman

  I always made web pages by writing HTML code but now I would like to try to use some WYSIWYG approach. Can anybody recommend me a program which I can use for that? I mean a program in which you can move buttons, tables, pictures by mouse. You can change size and shape by mouse. You can use nice templates for "block of text", buttons, background and so on. I am using Windows 7. May be I already have something pre-installed?

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• Developing a mobile application, how to show help if it contains too much data?

  - by MobileDev123

  I am developing a mobile application which has many functionality, and I am pretty sure that the design will confuse the user about how to use some functionality so we decided to include some help as we can see them regularly in desktop applications, but later we found that the help text is too long. We don't think that one screen is enough to describe what a user can do. Moreover the project itself is subjected to evolve based on beta stage and user reports. After a lot of thinking and meetings we have decided three options to show the users what they can do. Create the website or blog, so we can let the users know what they can do with this application, the advantage is that it can provide us a good source of marketing, but for that they have to access the site while most part of the application can be used while being offline in earlier versions. Create a section in the application called demos to show the same thing locally, but we are afraid that it will increase the size, that we think can be avoided (and we are planning to avoid if there is any option) Show popups, but we discarded this thinking that pop ups annoys user no matter what the platform is. I want to know from community that which option will you choose, we are also open to accept other ideas if you have.

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• firefox raided?

  - by dschinn1001

  ubuntu 12.10 with firefox 17.0 firefox is now suddenly not starting any more ? (since I tried something with virtualbox and win7 firefox seems to be raided somehow ? - then after next boot virtualbox with win7 did not work any more and had message like here: Premature end of data in tag VirtualBox line 8. Location: '/home/$user/VirtualBox VMs/V12/V12.vbox', line 86 (8), column 2. /home/vbox/vbox-4.2.4/src/VBox/Main/src-server/MachineImpl.cpp[724] (nsresult Machine::registeredInit()). Fehlercode: NS_ERROR_FAILURE (0x80004005) Komponente: Machine Interface: IMachine {22781af3-1c96-4126-9edf-67a020e0e858} ) this happened all - after win7 made an update and virtual hard-disk with size of normally 25 Gibi exceeded to 26.8 Gibi I plugged (when I created virtualbox with win7) usb-hard-disk with 500 Gibi, but somehow win7 was not installed on disk with 500 Gibi - instead only virtual-harddisk with default 25 Gibi was created - and smaller harddisk with maximum of 120 Gibi was restless stuffed out. This created then the problem with "raided" firefox and firefox cannot start any more. After I delelted virtualbox with win7 - there are 12 Gibi free space back on the smaller harddisk - but firefox remains after reboot out-of-function and does not start.

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• How to add a new entry to fstab?

  - by Roei

  I mount a device mount /dev/xvdf /mnt/mongo and verify the mount using df-h: Filesystem Size Used Avail Use% Mounted on /dev/xvda1 7.9G 955M 6.9G 12% / tmpfs 299M 44K 299M 1% /dev/shm /dev/xvdf 20G 589M 19G 4% /mnt/mongo But now I'm trying to figure out how to make it auto mount on boot. I understand I need to add a new entry to /etc/fstab, so I perform: $ sed -i '$ a\/dev/xvdf /mnt/mongo xfs defaults 1 1' /etc/fstab But, after reboot, it seems that the auto mount didn't work. The device didn't appear in the df -h list. Should I not use the sed to add the entry? Is the entry I entered incorrect?

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• Why does the Java VM process eat up more RAM then specified in -Xmx parameter?

  - by evilpenguin

  I have multiple servers running CentOS 5.4 and only one application running on Java VM. I've configured the Java VM with the following arguments: java -Xmx4500M -server -XX:+UseConcMarkSweepGC -XX:+CMSIncrementalMode -XX:NewSize=1024m -Djava.net.preferIPv4Stack=true -Dcom.sun.management.jmxremote=true The machines I'm running the VM on has 6 GB RAM and no other applications running. After a while, the java process starts to hit the swap space really hard, I get this info out of the top command: 7658 root 25 0 11.7g 3.9g 4796 S 39.4 67.3 543:54.17 java On the other hand, if I connect via JConsole, it reports the Java VM has 2.6 GB used, 4.6 GB commited and 4.6 Gb max. java -version returns: java version "1.6.0_17" Java(TM) SE Runtime Environment (build 1.6.0_17-b04) Java HotSpot(TM) 64-Bit Server VM (build 14.3-b01, mixed mode) Why is the Java VM expanding so much past it's allocated heap size? And where does that memory go, if it's not reported in JConsole?

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• Cloud computing - database loading question

  - by workwise

  Following is the situation, I want to know whether what I want is possible in cloud computing and is it the best way for me: 1) My main site has a Database with tables with millions of rows, and entries are added almost every second. 2) I will setup a mysql mirror, so there will be a backup database always in sync with the main one. 3) There are few tens of thousands of images- growing. So say total size of images few tens of gigabytes. I will be keeping the image data also in sync on the backup server. 4) There can be short periods where traffic can go 100X the average traffic. 5) I will be using memcache heavily - most database and even frequently used disk files/images will be in RAM. I want that the main site runs on a dedicated server. The backup server is say an Amazon EC2 instance. Now note that since it is live backup, I need to run a small instance continuously. I want that when I anticipate high traffic, I should be able to run a large instance on the cloud and transfer the traffic there. The main point is - I do not want to spend time in "loading" the database on the large instance, as it typically can take few minutes or even hours (experience). So is it possible to just scale the memory/CPU on demand, and not having to load the database or sync up the filesystem? I want to setup my backup scripts etc just ONCE. Thanks JP

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• isometric drawing order with larger than single tile images - drawing order algorithm?

  - by Roger Smith

  I have an isometric map over which I place various images. Most images will fit over a single tile, but some images are slightly larger. For example, I have a bed of size 2x3 tiles. This creates a problem when drawing my objects to the screen as I get some tiles erroneously overlapping other tiles. The two solutions that I know of are either splitting the image into 1x1 tile segments or implementing my own draw order algorithm, for example by assigning each image a number. The image with number 1 is drawn first, then 2, 3 etc. Does anyone have advice on what I should do? It seems to me like splitting an isometric image is very non obvious. How do you decide which parts of the image are 'in' a particular tile? I can't afford to split up all of my images manually either. The draw order algorithm seems like a nicer choice but I am not sure if it's going to be easy to implement. I can't solve, in my head, how to deal with situations whereby you change the index of one image, which causes a knock on effect to many other images. If anyone has an resources/tutorials on this I would be most grateful.

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• JPEG images not loading on PlayBook (Marmalade + iwgame)

  - by Vexille

  I'm using iwgame on a test project and I was trying to render different resolutions of JPG and PNG images. Everything works fine on the Marmalade Simulator, however once I deploy the game to our PlayBook and run it, only the PNG images are shown. I have declared the images in the MKB file and on a XML file iwgame's using to load the images. I've checked the deployments folder and all images are present in the intermediatefiles/native folder. We're currently using a BlackBerry only license, so we can only test this on the PlayBook, but we do intend to get a Community license and deploy to iOS and Android devices eventually (I'm not sure if this is a problem exclusive to the PlayBook). I really don't know if this is a Marmalade or a iwgame issue. I have a different test project without iwgame and it simply won't run with jpg images (I get the error: 'Could not find handler for extension "jpg"'). While searching for a sollution, I've seen people talking about using libjpg, but I've also found that Marmalade supposedly has integrated native jpeg support (and because of that iwgame has abandoned their jpeg loading support since v0.340), so I don't know what to think. I'm currently using the most recent versions of both Marmalade and iwgame, I believe: Marmalade 6.1.2 and iwgame 0.400. Also, please let me know if there's an easier or better way to do this, such as linking libjpg or something (I'm not exactly sure how to do this). I really would appreciate some help with this, there's a huge difference in size for the images we're planning to use, from a ~500kb jpg file to a ~3.5mb png file. Thanks, guys.

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• excel rows,find if include,low and high

  - by Malin Pedersen

  Link to full-size image For what is marked in orange: As mentioned in the example in the picture it says "headphones". I would like it to search through all the lines in column A, to find something that has that name in it, then it should count the number of people, and come out with the number (in how many) the "middle price" I want it to take the price of B (depending on where it found it called headphones) and take the average price of it. In secured, as I would like it to count how many of them (from the number, or from the beginning) that have "secured" as "no" and "yes." I would like to use this on several things. For what is marked in pink: Where would I find the average price of all the goods, and what the name of the particular item is? Same with the highest and lowest price. How can I do this?

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• Strange Inode/Ram cache drops happening in CentOS

  - by FunkyChicken

  I run a CentOS 5.7 machine (64bit) with 24GB ram and 4x SAS drives in RAID10 setup. This machine runs nginx/1.0.10, php-fpm & xcache. About a month back the RAM usage of this machine has changed. About every few hours the 'CACHE' is flushed from the RAM, this happens exactly when the 'Inode table usage' drops. I'm pretty sure these drops are related. (see the 2 attached images). This server hosts quite a lot of small files (20M all a few KB big). Not many files are deleted (maybe 100 per hour (total size a few MB max)), not enough to account for the huge Inode table drops. I also have no crons running which could cause these drops. Sar -r output: http://pastebin.com/C4D0B79i My question: Why are these huge RAM/Inode usage drops happening? How can I get Nginx/PHP to use all of my servers RAM?

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• Can't access USB drive anymore

  - by marie

  I have a 32 GB Lacie Cookey USB flash disk that doesn't show in the Computer window but it's visible as a device. cmd > diskpart DISKPART> list disk Disk ### Status Size -------- ------------- ------ Disk 0 Online 149 G Disk 1 No Media 0 DISKPART> select disk 1 Disk 1 is now the selected disk. DISKPART> clean Virtual Disk Service error: There is no media in the device. It also appears in the Disk Management tool, but the box is empty. Is there anything I can do or is it dead? ............................................................ output from ChipGenius: Description: [F:]USB Mass Storage Device(LaCie CooKey) Device Type: Mass Storage Device Protocal Version: USB 2.00 Current Speed: High Speed Max Current: 200mA USB Device ID: VID = 059F PID = 103B Serial Number: 070535924B170C18 Device Vendor: LaCie Device Name: CooKey Device Revision: 0100 Manufacturer: LaCie Product Model: CooKey Product Revision: PMAP Controller Vendor: Phison Controller Part-Number: PS2251-67(PS2267) - F/W 06.08.53 [2012-09-26] Flash ID code: 983AA892 - Toshiba [TLC] Tools on web: http://dl.mydigit.net/special/up/phison.html

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• At what point does Active Directory and Domain Services become necessary? [closed]

  - by user970638

  I see time and time again such services running in a business environment with only 10 users. Everyone in the office authenticates with the DC and interacts with a shared drive where files and documents are stored. I can't help but think...reeeeealy? But I don't know, that's why I'm asking. To me it seems like you need to reach a certain threshold of size and needs before you throw a DC into the mix. ie: a 20+ user business (and growing) with permission requirements that separate the sales team from accounting. Thoughts?

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• Back up of Streaming server

  - by Maxwell

  I want to take a new streaming server for my website which generally holds videos and audio files. But how do we maintain backup of the streaming server if storage size is increasing day by day. Generally on Database servers, like Sql Server, backups can be easily taken and restored very easily as they do not occupy much space for medium range applications. On the other hand how can we take backup of streaming server? If the server fails, the there should be an alternative server / solution that should decrease downtime of the server. How is the back-end architecture of YouTube built to handle this?

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• thttpd: Daemon exiting, I don't know why

  - by Tobe

  I run thttpd to serve some perl files. But for some reason the daemon is exiting every second or third day. Strangely it's always at 6.25 am. Here are some lines from syslog: Nov 10 06:25:40 b1 thttpd[6370]: up 86404 seconds, stats for 86404 seconds: Nov 10 06:25:40 b1 thttpd[6370]: thttpd - 25 connections (0.000289338/sec), 1 max simultaneous, 625000 bytes (7.23346/sec), 2 httpd_conns allocated Nov 10 06:25:40 b1 thttpd[6370]: libhttpd - 30 strings allocated, 8200 bytes (273.333 bytes/str) Nov 10 06:25:40 b1 thttpd[6370]: map cache - 0 allocated, 0 active (0 bytes), 0 free; hash size: 0; expire age: 1800 Nov 10 06:25:40 b1 thttpd[6370]: fdwatch - 20902 selects (0.24191/sec) Nov 10 06:25:40 b1 thttpd[6370]: timers - 2 allocated, 2 active, 0 free Nov 10 06:25:40 b1 thttpd[6370]: exiting Any ideas?

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• resize image without image quality reduction

  - by ali

  In web design , it's usually needed to design an image for example in Photoshop and then use multiple sizes of it. but I don't understand something here : When I resize the image (PNG or JPG) and reduce the dimensions of that in Photoshop , the image quality extremely gets reduced and the edges become messy while resizing the image in a simple software like Microsoft Paint gives a really better output! So what's the reason ? Is there a trick in Photoshop for image resizing which I've missed? Thanks for your help. UPDATE: I resize in this way : image image size , then enter new dimensions , all of checkboxes are checked , and have tried all of resample modes including Bicubic sharper

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• How to rebuild a Li Ion laptop battery?

  - by spoulson

  I have an aging Gateway NX560XL laptop. The battery is toast and a new one, even aftermarket, starts at $130. So, to experiment, I began tearing apart the old battery to see what can be done. I found it used 8 standard size 18650 Li Ion cells arranged two cells parallel then in series (like: ====). Some online shopping revealed ~$7-13/ea replacements depending on mAh output. My plan is to load test to determine the bad cells and replace only those, as I read that typically only 1 or 2 may be bad. I'm proficient with soldering, however these cells are attached with welded tabs. Some of them broke during disassembly and I'm not sure how to reattach them. What I found online are cells like these that have solder tabs pre-welded to the ends so I can solder wires onto. Is there any guide available that provides the instructions and parts to do this kind of rebuild?

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