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• Ubuntu 12.04 keeps rebooting after changing video settings

  - by ScottJShea

  In a pinch I had to install Ubuntu 12.04 on an HP Pavilion g6. I was not fond of the 1024 x 7678 resolution so after investigating and finding I had the intel chipset I set the below in the grub file: GRUB_GFXMODE=1366x768x32 GRUB_GFXPAYLOAD_LINUX=1366x768x32 This did not work. The system just keeps rebooting as nauseum. I powered down, inserted my Ubuntu Install USB, powered up, edited the Grub file on the disk (made sure it was the disk and not the Grub for the USB stick). Powered off and tried booting up again. Same thing. So: As a noob am I missing something in the boot to allow me into a recovery mode? (I cannot seem to get to the Grub menu) If not is there a way I can recover from this? UPDATE: Holding down the shift key after BIOS gets "GRUB Loading..." and then a reboot

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• How to correctly set permisions for all subfolders and files

  - by Saeid87

  I am following the guide to install TinyOS on Ubuntu 12.04 I have done up to step 3, But I am not sure if I have done the step 3 correctly. Because by doing the step 4 I get the permission error : saeid@saeid-Satellite-C660:~$ tos-install-jni /usr/bin/tos-install-jni: 13: [: =: unexpected operator Installing 32-bit Java JNI code in /usr/lib/jvm/java-6-openjdk-i386/jre/lib/i386 ... install: cannot create regular file `/usr/lib/jvm/java-6-openjdk-i386/jre/lib/i386/libgetenv.so': Permission denied Can you please tell me what would be the actual commands for step 3? What I have to replace with following lines?: /opt/tinyos-2.x files: chown -R /opt/tinyos-2.x Change the permissions on any serial (/dev/ttyS), usb (/dev/tts/usb, /dev/ttyUSB), or parallel (/dev/parport) devices you are going to use: chmod 666 /dev/ I mean how would you do those steps in your ubuntu?

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• Ubuntu 12.10 WiFi Problems

  - by Sean Webber

  I have a 32 bit machine running Ubuntu 12.10 with WiFi on it. I have a WPA2 network at home, but if I leave the USB Adapter plugged in while it boots, it infinitely keeps asking for the network password but never connects. If I plug it in after boot, it will connect but then I can't access ANYTHING on the LAN or Internet because "the DNS servers are unreachable". Now, if I leave the computer on a while, I get lucky sometimes and it MAGICALLY decides to connect for a little bit, lock the machine though and the Internet's gone again. The weirdest thing, is when I am connected but can't get to the internet, I do a netstat or ifconfig wlan0, I do have an IP address and everything. It says I'm connected but its not. I have a Realtek RTL8188CU USB adapter.

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• Rebooting yes, Shutdown no

  - by Chiotis Leonidas

  Hello everyone and thanks in advance. I am new in Ubuntu and have the 12.04 version dual boot with Windows XP. I have the following problem. The laptop can reboot using the reboot option from the menu but it cannot shut down. It starts shutting down, the dots appear but then it freezes and does not turn off. Sometimes it shuts down normally (usually just after an update) but then it loses that capability again. Some strange things, I noticed that when the dots freeze, the USB mouse loses power, BUT the usb-powered cooling pad continues to work The only Fn shortcuts that work all the time are the Volume up, down and mute, BUT sometimes when the other Fn combinations (screen-off etc) work the computer shuts down normally I searched a lot on my own, please help.

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• Can I automatically make my Nvidia card's fan quieter?

  - by Salim Fadhley

  I have a machine with an Nvidia graphics card. Unfortunately the GPU fan is very loud. It's very annoying at times. We never use this machine for intense 3d work - that GPU is probably not working very hard at all. I'm pretty sure I can run it at a much lower fan-speed without causing any problems. The nvclock utility can be used to manually adjust the fan-speed of my Nvidia graphics card. I'd like to call this utility automatically when the machine boots up. Is there some kind of system service which I can use to automatically apply this kind of system-wide configuration? Even better, is there a system monitoring service which can poll the GPU temperature and adjust the various system fan-speeds accordingly? Thanks!

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• How do I install on an Acer Aspire M3970?

  - by KillingJoke

  I cannot install Ubuntu 11.04 or 11.10 32 or 64 bit from CD or USB Drive on my machine. I tried to unplug all devices connected to USB, no changes the same thing: [ 15.383691] sd 7:0:0:3: [sdg] Attached SCSI removeable disk. And then the installation or Live image booting does nothing more... Its quite annoying that Ubuntu run on every of my Machines but not on my new PC :( What can I do to get that running? Edit: Fascinating thing I found out, is that the 10.04 LTS seems to work in every way. Why does 11.04 or 11.10 does not... Maybe theres a Bug in the installer ?

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• How can I motivate the community to use boinc?

  - by user49523

  boinc is a really nice application to use on background of a computer that can help science projects and humanity as a all. I would like somehow to encourage people use boinc with their preferences on boinc like projects choice, cpu from 10 to 100 ,.. with their computer that will help science to move more quickly and help humanity There are 20 million users of ubuntu if most of use boinc , this will increase the speed of science projets .. and if other people from other operating systems use as also like mac,windows,.. and other open source like debian,.. this would even speed more science and now anyone can win also a prize , joining a project management like http://boincstats.com/ and there is more 2 How can i get ubuntu users and ubuntu community to know and use boinc application?

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• Installed Ubuntu on 12.04 on my MacBook Air now I want to expand the partition

  - by Josh

  I recently installed Ubuntu 12.04 on a 40GB partition on my Mac Book Air (5,2). I'm having so much fun with it, I'm ready to make the switch permanently and replace it as the primary OS on my machine. I realize I can wipe the machine and start from scratch, but I'm looking for alternatives since I like my current setup. Options are... Create a backup and restore the back up to a larger partition (Assuming I should keep the default OS X install for firmware updates) Create a backup and restore to the entire drive (create a restore usb stick for OSX - not sure if that's possible?) re-size my current partition and wipe the OS X partition and either, A. re-install OS X (similar to option 1) or B. create the USB key (similar to option 2). Thoughts? Any other suggestions? Would also like thoughts on the "optimal" or "best practice" for partitioning Ubuntu. Thanks!

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• PHP Fingerprinting CMS Versions by their meta tags [migrated]

  - by Mud

  Hey guys I'm having some issues with the speed of my script. I'm a novice I know so getting past that - what suggestions would you have to speed up my script? I was originally just reading in the index.php and then searching the <head> of the page for an array of strings. Then I read about the get_meta_tags and went that way. Then I had issues with some sites having 300 redirects in place so I used curl to check the URL existed and to speed up things but it's still taking 5 minutes or so to execute. <?php function url_exist($url){ $c=curl_init(); curl_setopt($c,CURLOPT_URL,$url); curl_setopt($c,CURLOPT_HEADER,1); curl_setopt($c,CURLOPT_NOBODY,1); curl_setopt($c,CURLOPT_RETURNTRANSFER,1); curl_setopt($c,CURLOPT_FRESH_CONNECT,1); if(!curl_exec($c)){ return false; }else{ return true; } curl_close($c); } function checkVersion($url){ $tags = get_meta_tags($url); if (is_array($tags) && array_key_exists('generator', $tags)) { $v = "<span style='background-color:#7BF55D;color:#A3A0A0'>".$tags['generator']."</span"; }else{ $v="<span style='background-color:#F55D67;color:#A3A0A0'>Metatag not found!</span>"; } return $v; } $row = 1; echo "<table>"; if (($handle = fopen("url.csv", "r")) !== FALSE) { while (($data = fgetcsv($handle, 1000, ",")) !== FALSE) { $num = count($data); $row++; for ($c=0; $c < $num; $c++) { if(url_exist($data[$c])){ echo "<tr><td>".$data[$c]."</td><td>".checkVersion($data[$c])."</td></tr>"; sleep(2); }else{ echo "<tr><td>".$data[$c]."</td><td><td><span style='background-color:#F55D5D;color:#A3A0A0'>URL not valid!<span></td></tr>"; } } } fclose($handle); } echo "</table>"; ?>

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• Making video from 3D gaphics in OpenGL

  - by MVTC

  What are some of the preferred methods or libraries for creating video from an OpenGL graphics simulation? For example, I want to create a visualization(video) of an N-Body gravity simulation by rendering non-real-time OpenGL frames. The simulation is already coded, I just don't know how to convert it to video. EDIT: I am also interested in providing the described functionality: The user can adjust parameters including the time step between captured frames and then initiate the simulation. The user waits for the simulation to complete, and then can watch the results. The user is able to increase or decrease the playback speed of the simulation whereas in slow motion, more frames are used i.e., you see higher resolution time steps, and when the speed is increased, you see lower resolution time steps at a higher rate, but the frames per second flashing on the screen is constant.

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• Easy Remote Access with PogoPlug

  You won't find a faster, easier way to remotely access and share the files you have stored on USB storage devices.

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• Easy Remote Access with PogoPlug

  You won't find a faster, easier way to remotely access and share the files you have stored on USB storage devices.

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• Problem with Arcam rpac and Ubuntu 12.04

  - by user108393

  I have recently (?mistakenly) purchased an Arcam rpac USB DAC for my Ubuntu (12.04) PC. I have torn out all but 3 of my hairs trying to get this to work and have had absolutely no luck so far. I can see the Arcam USB audio device when i run aplay -l, however I cannot see it listed under the Sound settings. I can see the soundcard device when running alsamixer also, but if I try and select it, alsamixer crashes, stating "cannot load mixer controls: Invalid argument". Any ideas how to get this working (if it's even possible)? Does anyone else out there have the rpac with ubuntu? Thank you! Aman

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• How can I install Ubuntu alongside Fedora?

  - by user285248

  I am currently running Fedora and would like to duel boot with Ubuntu. I do not want to replace Fedora, I would like to keep it as my main OS. However, when using the Ubuntu installer I only get the option to either: "Replace Fedora release 20 (Heisenbug) with Ubuntu" or "Something else" Is there I way I can install ubuntu alongside Fedora without deleting it? If so, as I would like fedora to be my main OS, is there also a way to make it the top grub option? I have tried partitioning with gparted however I can't split the fedora partition, it says it is all used however I have only used about 100/500GB. I am trying to install ubuntu 13.10 off a live USB stick, I will upgrade to 14.04 when I install it but don't want to make a new live USB.

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• Flash Mouse.hide() cmd+tab(alt+tab) bring the mouse back

  - by DickieBoy

  Having a bit of trouble with Mouse.show() and losing focus of the swf This isn't my demo: but its showing the same bug http://www.foundation-flash.com/tutorials/as3customcursors/ What i do to recreate it is: mouse over the swf, hit cmd+tab to highlight another window, result is that the mouse is not brought back and is still invisible, (to get it back go to the window bar at the top of the screen and click something). I have an area in which movement is detected and an image Things I have tried package { import flash.display.Sprite; import flash.display.MovieClip; import com.greensock.*; import flash.events.*; import flash.utils.Timer; import flash.events.TimerEvent; import flash.utils.*; import flash.ui.Mouse; public class mousey_movey extends MovieClip { public var middle_of_the_flash; //pixels per second public var speeds = [0,1,3,5,10]; public var speed; public var percentage_the_mouse_is_across_the_screen; public var mouse_over_scrollable_area:Boolean; public var image_move_interval; public function mousey_movey() { middle_of_the_flash = stage.stageWidth/2; hot_area_for_movement.addEventListener(MouseEvent.MOUSE_OVER, mouseEnter); hot_area_for_movement.addEventListener(MouseEvent.MOUSE_OUT, mouseLeave); hot_area_for_movement.addEventListener(MouseEvent.MOUSE_MOVE, mouseMove); stage.addEventListener(Event.MOUSE_LEAVE, show_mouse); stage.addEventListener(MouseEvent.MOUSE_OUT, show_mouse); stage.addEventListener(Event.DEACTIVATE,show_mouse); hot_area_for_movement.alpha=0; hot_area_for_movement.x=0; hot_area_for_movement.y=34; } public function show_mouse(e) { trace(e.type) trace('show_mouse') Mouse.show(); } public function onActivate(e) { trace('activate'); Mouse.show(); } public function onDeactivate(e) { trace('deactivate'); } public function get_speed(percantage_from_middle):int { if(percantage_from_middle > 80) { return speeds[4] } else { if(percantage_from_middle > 60) { return speeds[3] } else { if(percantage_from_middle > 40) { return speeds[2] } else { if(percantage_from_middle > 20) { return speeds[1] } else { return 0; } } } } } public function mouseLeave(e:Event):void{ Mouse.show(); clearInterval(image_move_interval); } public function mouseEnter(e:Event):void{ Mouse.hide(); image_move_interval = setInterval(moveImage,1); } public function mouseMove(e:Event):void { percentage_the_mouse_is_across_the_screen = Math.round(((middle_of_the_flash-stage.mouseX)/middle_of_the_flash)*100); speed = get_speed(Math.abs(percentage_the_mouse_is_across_the_screen)); airplane_icon.x = stage.mouseX; airplane_icon.y = stage.mouseY; } public function stageMouseMove(e:Event):void{ Mouse.show(); } public function moveImage():void { if(percentage_the_mouse_is_across_the_screen > 0) { moving_image.x+=speed; airplane_icon.scaleX = -1; } else { moving_image.x-=speed; airplane_icon.scaleX = 1; } } } } Nothing too fancy, im just scrolling an image left of right at a speed which is generated by how far you are from the middle of the stage, and making an airplane moveclip follow the mouse. The events: stage.addEventListener(Event.MOUSE_LEAVE, show_mouse); stage.addEventListener(MouseEvent.MOUSE_OUT, show_mouse); stage.addEventListener(Event.DEACTIVATE,show_mouse); All fire and work correctly when in the browser, seem a little buggy when running a test through flash, was expecting this as ive experienced it before. The deactivate call even runs when testing and cmd+tabbing but shows no mouse. Any help on the matter is appreciated Thanks, Dickie

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• Samsung series 9 np900x4c-a03us Dual boot windows 7

  - by rowntreerob

  how do i get USB install of 12.04 installed? how do i change the BIOS? how do i partition the disk for dual boot? Web instructions for USB ISO bootable image were confusing. Series 9 has new, UEFI compatible BIOS - there is a gotcha involving "fast BIOS Mode" The native windows install included 2 partitions that were hard to get rid of: 21GB NTFS for "Samsung-rec" ... recovery 8GB for Hibernation both of the above were hard to get rid of in windows.

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• install 64 bit as dual boot with 32 bit

  - by profgeorgefhart

  I downloaded Ubuntu 12.10 - bit .iso onto a bootable USB and want to put it on to my 32 bit 12.10 system as a dual boot, using a totally separate 1 Tb disk [which already has data on it]. However, when I go to restart and hit F8 fir BIOS set-up, I can change all the settings except the boot search order. Is there some other way to force the startup to read the USB first? Is the fact that I cannot change the search order to do with the fact that the 32 bit OS was 'Installed in legacy mode' not 'EFI? How can I rectify this? (This might be related -- might I need to update my BIOS for my Intel DX38BT motherboard? I think their last upgrade was 2009.)

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• huwai 1731 ( mobile broadband ) not working with dell inspiron 3521

  - by N.Ramkumar

  Please help, one of my friend shared this note ( enclosed below), I used these codes and my laptop is able open the data card but I am not getting any signals. I am able to work with wired connection, but wi-fi and mobile broad band are not working. Please help. sudo apt-get purge usb-modeswitch sudo apt-get update sudo spt-get install usb-modeswitch sudo apt-get update gksudo gedit /lib/udev/rules.d/40-usb_modeswitch.rules Once you enter these above commands 40-usb_modeswitch.rules text file will open. Then, copy below mentioned lines into 40-usb_modeswitch.rules text file. #Huawei E1731 ATTRS{idVendor}=="12d1", ATTRS{idProduct}=="1446", RUN+="usb_modeswitch '%b/%k'" Save the file Then type : sudo apt-get update Then restart the machine.

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• Time display and Cursor bug in Ubuntu 14.04 LTS

  - by user291774

  Just installed Ubuntu 14.04. Noticed the time in seconds speeds up then slows down to normal speed. The cursor for the keyboard has a strange rhythm; it stays normal, then slowly speeds up faster and faster till it looks like it's not blinking anymore, then goes back to normal and starts the process again. It almost seems like my whole operating system speeds up then slows down again. Even the hour circle that spins when it's loading starts slowly then it picks up speed till it spins so fast it looks like it's not even spinning. It interferes with video and the whole system. I have a Dell Vostro 3750 dual video cards and dual boot with Windows 7. Windows is running fine.

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• Fast language for problem solving? [closed]

  - by Friend of Kim

  I learned PHP to make websites. After some years I've started using programming for solving what is difficult tasks for my level. Now I want to make a program that solves equations. (I want to write it myself, not use an API. Because I'm doing this for the sake of the challenge, not for the result..) Because of this, I'm going to learn a new and faster/better language. It's going to be C++, Java, Python or C#. What are the benefits of each language, and which language is best for speed compared to speed of writing and readability? Using C would be lightning fast, but the lack of OO is making for more complex code and reduces the readability, for example..

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• ubuntu 14.04 slow

  - by TURN A

  so i upgraded to ubuntu 14.04 from 12.04 with a usb but i have internet ,my computer is really slow at 1024x768 definition ,everything works super slow ,windows closing and opening and streaming videos ,everything ive used so far.but it works fine at 800x600 definition ,i want it to be fine at the higher definition ,how do i make it run well at 1024x768 ? in additional drivers nothing shows ,and my computer mirrors by default for some reason ,i tried stopping it from mirroring but most buttons dont want to work and weird glitches happen ,the system doesnt work well when not mirroring , i dont care if it mirrors or not i just want good performance .thank you in advance for any answers !! here are the computer specs Processor 1.8 GHz 8032 RAM 2 GB DDR3 Memory Speed 1066 MHz Hard Drive 32 GB Graphics Coprocessor Graphics Media Accelerator HD Wireless Type 802.11B, 802.11G, 802.11n Number of USB 2.0 Ports 4 Expand Other Technical Details Brand Name Asus Item model number EB1030-B003L Hardware Platform Linux Operating System Ubuntu Item Weight 1.5 pounds Item Dimensions L x W x H 1.14 x 6.70 x 8.60 inches Color Black Processor Brand Intel Processor Count 1 Computer Memory Type DDR3 SDRAM Flash Memory Size 32 Hard Drive Interface Solid State Optical Drive Type No

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• The system is running in low graphics mode error before ubuntu gets installed

  - by hellodear

  I am using Bootable USB for installing Ubuntu with Windows 8.1. I have put pendrive and then booting my USB. When it shows me to try Ubuntu or install Ubuntu. Then I press Try ubuntu and then it says" "The system is running in low graphics mode". Then I press Ok. Then it shows 4 options. Then again I click Ok. Then it shows a black screen and nothing happens. I have tried all possible answers provided in AU. What should I do? Please help. I am using Windows 8.1 with dedicated graphic card (Video card - AMD Radeon HD 8670M). Installing 12.04 LTS with pre-installe Windows 8.1 in a Dell Laptop 3537 inspiron.

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• Particle system lifetimes in OpenGL ES 2

  - by user16547

  I don't know how to work with my particle's lifetimes. My design is simple: each particle has a position, a speed and a lifetime. At each frame, each particle should update its position like this: position.y = position.y + INCREMENT * speed.y However, I'm having difficulties in choosing my INCREMENT. If I set it to some sort of FRAME_COUNT, it looks fine until FRAME_COUNT has to be set back to 0. The effect will be that all particles start over at the same time, which I don't want to happen. I want my particles sort of live "independent" of each other. That's the reason I need a lifetime, but I don't know how to make use of it. I added a lifetime for each particle in the particle buffer, but I also need an individual increment that's updated on each frame, so that when PARTICLE_INCREMENT = PARTICLE_LIFETIME, each increment goes back to 0. How can I achieve something like that?

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• Attempting to install Ubuntu 11.10 along side Windows 7 Professional 64bit. Installer doesn't recognize an operating system present

  - by KichigaiDave

  System Details: Asus Sabertooth 990FX motherboard AMD FX-8120 CPU 16 GB DDR3 1600 Corsair Vengance RAM (4x4) EVGA Nvidia GTX-560Ti video card 2x Dvd/cd rw dirves 1 Bluray RW drive 1 Orico USB 3.0 & eSata panel 1 Sabrent floppy bay card reader w/USB 2.0 port 760W pc power & cooling PS OCZ agility 120GB SSD (Windows 7 Professional 64bit installed in an approx 80gb partition, NTFS. There is also a "System Reserved" partition shown in disk management at 100mb in size, also NTFS) That leaves about 32GB usable free, un-partitioned space in which I hoped to install Ubuntu. However when I run the Ubuntu 11.10 AMD64 installer, it doesn't show there is even an operating system installed. It just shows the entire drive as free-unpartitioned space. Just not sure what to do here. I was thinking about using the Wubi installer, but i don't know about that. Is the performance reduction pretty drastic? Thanks,

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• accessing webpages from terminal

  - by August

  Using Ubuntu 12.04 . I know two methods to access the web-pages through terminal . They are lynx & elinkswhen i have tried to use them to access web-pages from terminal i didn't felt any kind of speed improvements . I am not sure whether its a usual thing or my speed (because its slow one ). so which way is the best to access the web-page terminal browsers or GUI browsers? and what else more i can get/lost from text terminals ?

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