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• Installing Ubuntu 12.10 on new computer with Windows 8

  - by rft183

  I recently purchased a new HP computer (P6-2330) with Windows 8. I have tried unsuccessfully to install Ubuntu 12.10 64bit alongside Windows 8. The computer is UEFI with Secure Boot enabled. I've tried following the instruction at https://help.ubuntu.com/community/UEFI. I am able to get the GRUB menu to show up. However, as soon as I press Enter on either Try Ubuntu or Install Ubuntu, the screen goes blank. Nothing works at all, not even the Num Lock or Caps Lock keys on the keyboard. I have to use the power button to restart the computer. Does anyone have any suggestions on how to get Ubuntu installed? To clarify, I have actually tried installing using both a USB stick and a DVD. The USB stick gave a blank screen, while the DVD gave the error message "Empty Security Header" after pressing Enter at the GRUB screen.

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• run .profile function as cron job

  - by Don

  In the .profile file of the root user I have defined a function, e.g. function printDate() { date } I want to run this function every minute and append the output to cron.log. I tried adding the following crontab entry: * * * * * printDate > $HOME/cron.log 2>&1 But it doesn't work. The cron.log file gets created, but it's empty. I guess this is because the .profile isn't read by cron, so any functions/aliases defined therein are unavailable to it. So I tried changing the crontab entry to: * * * * * source $HOME/.profile;printDate >> $HOME/cron.log 2>&1 But this doesn't work either. It seems cron still doesn't have access to the printDate function because I see the following in cron.log /bin/sh: printDate: not found

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• Friday Fun: Sugar, Sugar 2

  - by Asian Angel

  In this week’s game you indulge in sugary-sweet fun as you control the direction sugar flows while working to fill all the empty cups waiting for you. Whether it is a downward flow, redirected off-screen and back, reverse gravity, or teleportation you will certainly find your ingenuity tested as you try to win before the flow of sugar runs out! HTG Explains: What Is Windows RT and What Does It Mean To Me? HTG Explains: How Windows 8′s Secure Boot Feature Works & What It Means for Linux Hack Your Kindle for Easy Font Customization

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• mounting linux partition after installing windows

  - by varsketiz

  I installed windows 7 and my grub is gone. I'm trying to follow: https://help.ubuntu.com/community/RecoveringUbuntuAfterInstallingWindows but I can't mount my ubuntu partion. sudo fdisk -l Device Boot Start End Blocks Id System /dev/sda1 * 1 13 102400 7 HPFS/NTFS Partition 1 does not end on cylinder boundary. /dev/sda2 13 4863 38958080 7 HPFS/NTFS /dev/sda3 4864 14594 78157825 5 Extended /dev/sda5 14220 14594 2999296 82 Linux swap / Solaris Gparted shows my Extended partition as empty/unallocated space (???). How can I mount it? sudo mount -t ext3 /dev/sda3 /media/ubuntu mount: wrong fs type, bad option, bad superblock on /dev/sda3, missing codepage or helper program, or other error In some cases useful info is found in syslog - try dmesg | tail or so

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• Doesn't suspend when closing lid on a Dell Inspiron N5110

  - by AWE

  This is what advanced settings tell me: Shell Laptop lid close action on battery suspend Shell Laptop lid close action when on AC suspend I couldn't post a screenshot because "new users aren't allowed to post images. Earn more than 10 reputation to post images" The screen is on when I open the lid after closing for a few seconds. But not when I suspend from the session menu. Still the battery on my Dell inspiron N5110 is always empty when I get back to it after closing the lid. 'Why' is my question.

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• How to detect a touch on transparent area of an image in a (libgdx) stage?

  - by Usman

  Can some one please help to detect a touch on an image which I am using as an actor in a stage. The image is actually a long diagnol brush which has plenty of transparent area. The problem is when I touche the transparent area of the brush image it is also triggering the clicklistener of the image. I need the click listener should only be called when the finger actually touched the visible image not the area which is empty. I am using libgdx-0.9.4 libraries. Here is my simple piece of code. import com.badlogic.gdx.scenes.scene2d.ui.Image; import com.badlogic.gdx.scenes.scene2d.ui.ClickListener; Image brushImg = new Image(ImageCache.getTexture("brush")); brushImg.width = mStage.width()*0.75f; brushImg.height = mStage.height()*0.75f; brushImg.setClickListener(new ClickListener() { @Override public void click(Actor actor, float x, float y) { SoundFactory.play("brush"); }

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• I'm trying to install postgresql on 12.04, and it's just not working

  - by Pointy

  I've got a new installation and I'm trying to get Postgresql working. The database was installed and I started a restoration from a dump on another machine, but that ran into problems because I had forgotten to install the "contrib" package. I used "pg_dropcluster" to drop the old cluster so I could start from scratch, and that's when things went weird. The first manifestation of this was that /etc/postgresql was just empty. I uninstalled the postgresql package and reinstalled, several times, to no avail. Is there something I can do to figure out why apt is confused here? I've done this many times on many systems and never seen anything like this happen.

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• How to generate Visa checkout token? [on hold]

  - by Muhammad Junaid

  I am on process of creating a Visa checkout plugin but stuck in generating token Here are the token requirment: Format: Alphanumeric; maximum 100 characters in the form of token: x:UNIX_UTC_Timestamp:SHA256_hash, where UNIX_UTC_Timestamp is a UNIX Epoch timestamp SHA256_hash is an SHA256 hash of the following unseparated items: Your shared secret Timestamp from the transaction; exactly the same as UNIX_UTC_Timestamp Resource path (API name). This HTTPS request's query string Note: The query string includes one or more parameters in name-value pair format, whose names are separated from values by equal signs (=); an empty value may be omitted but the name and equal sign must be present. The initial question mark (?) is not included. Note: All parameters must be present. The parameters must be in lexicographic sort order (UTF-8, uppercase hex characters) with parameters separated from each other by an ampersand (&). Note: The query string must be URL encoded (excepting the following characters, per RFC 3986: hyp You can find on Google "visa checkout developer updating 1 px image"

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• How can I improve Eclipse's user Interface to get rid of the excessive padding and spacing?

  - by csilk

  Eclipse Juno (historical versions too) has too much padding applied to the tabs and borders. This makes it hard to work with multiple project folders, especially ones containing multiple packages and nested directories, due to an overall lack of space. This only appears to be an issue on Linux. Windows and OSX both have less padding which vastly improves the user experience. This issue affects my 15.4 inch laptop with a resolution of 1366 x 768. I'm not sure if this issue affects larger resolutions. Is there a way to change the padding and make the whole application look a little more compact / smaller? I've attached a screenshot of an empty Eclipse project in Eclipse. I'll add an OSX screenshot tomorrow for comparison.

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• replacing Zorin OS 8 with ubuntu 14.04

  - by Paul John

  I was trying to replace Zorin OS 8 with ubuntu 14.04 (32 bits). What I have tried: I took an empty pen drive and downloaded Ubuntu 14.04 iso file on to this pen drive. I then restarted my laptop (Lenovo N 3000) and pressed F12 I then selected the USB drive in the boot options. After sometime I got the Zorin flash screen again. I know I am "fundamentally" wrong in the manner how I am executing this installation process. If you could please provide me a stepwise instruction.

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• Presenting Beginning PowerShell at SQL Saturday 149 MN

  - by merrillaldrich

  I am happy to be presenting a session on beginning PowerShell for DBAs at my new home town’s SQL Saturday! (I moved from Seattle to Saint Paul, MN a short time ago.) I will be sharpening this presentation up to make sure anyone who comes will not go away empty handed. BTW, WOW, the schedule is up and I must admit I did not expect nine tracks of awesome. This looks amazing. My session is geared toward helping those DBAs who have not seen PowerShell, or perhaps may find PowerShell syntax opaque or...(read more)

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• Efficient way to render tile-based map in Java

  - by Lucius

  Some time ago I posted here because I was having some memory issues with a game I'm working on. That has been pretty much solved thanks to some suggestions here, so I decided to come back with another problem I'm having. Basically, I feel that too much of the CPU is being used when rendering the map. I have a Core i5-2500 processor and when running the game, the CPU usage is about 35% - and I can't accept that that's just how it has to be. This is how I'm going about rendering the map: I have the X and Y coordinates of the player, so I'm not drawing the whole map, just the visible portion of it; The number of visible tiles on screen varies according to the resolution chosen by the player (the CPU usage is 35% here when playing at a resolution of 1440x900); If the tile is "empty", I just skip drawing it (this didn't visibly lower the CPU usage, but reduced the drawing time in about 20ms); The map is composed of 5 layers - for more details; The tiles are 32x32 pixels; And just to be on the safe side, I'll post the code for drawing the game here, although it's as messy and unreadable as it can be T_T (I'll try to make it a little readable) private void drawGame(Graphics2D g2d){ //Width and Height of the visible portion of the map (not of the screen) int visionWidht = visibleCols * TILE_SIZE; int visionHeight = visibleRows * TILE_SIZE; //Since the map can be smaller than the screen, I center it just to be sure int xAdjust = (getWidth() - visionWidht) / 2; int yAdjust = (getHeight() - visionHeight) / 2; //This "deducedX" thing is to move the map a few pixels horizontally, since the player moves by pixels and not full tiles int playerDrawX = listOfCharacters.get(0).getX(); int deducedX = 0; if (listOfCharacters.get(0).currentCol() - visibleCols / 2 >= 0) { playerDrawX = visibleCols / 2 * TILE_SIZE; map_draw_col = listOfCharacters.get(0).currentCol() - visibleCols / 2; deducedX = listOfCharacters.get(0).getXCol(); } //"deducedY" is the same deal as "deducedX", but vertically int playerDrawY = listOfCharacters.get(0).getY(); int deducedY = 0; if (listOfCharacters.get(0).currentRow() - visibleRows / 2 >= 0) { playerDrawY = visibleRows / 2 * TILE_SIZE; map_draw_row = listOfCharacters.get(0).currentRow() - visibleRows / 2; deducedY = listOfCharacters.get(0).getYRow(); } int max_cols = visibleCols + map_draw_col; if (max_cols >= map.getCols()) { max_cols = map.getCols() - 1; deducedX = 0; map_draw_col = max_cols - visibleCols + 1; playerDrawX = listOfCharacters.get(0).getX() - map_draw_col * TILE_SIZE; } int max_rows = visibleRows + map_draw_row; if (max_rows >= map.getRows()) { max_rows = map.getRows() - 1; deducedY = 0; map_draw_row = max_rows - visibleRows + 1; playerDrawY = listOfCharacters.get(0).getY() - map_draw_row * TILE_SIZE; } //map_draw_row and map_draw_col representes the coordinate of the upper left tile on the screen //iterate through all the tiles on screen and draw them - this is what consumes most of the CPU for (int col = map_draw_col; col <= max_cols; col++) { for (int row = map_draw_row; row <= max_rows; row++) { Tile[] tiles = map.getTiles(col, row); for(int layer = 0; layer < tiles.length; layer++){ Tile currentTile = tiles[layer]; boolean shouldDraw = true; //I only draw the tile if it exists and is not empty (id=-1) if(currentTile != null && currentTile.getId() >= 0){ //The layers above 1 can be draw behing or infront of the player according to where it's standing if(layer > 1 && currentTile.getId() >= 0){ if(playerBehind(col, row, layer, listOfCharacters.get(0))){ behinds.get(0).add(new int[]{col, row}); //the tiles that are infront of the player wont be draw right now shouldDraw = false; } } if(shouldDraw){ g2d.drawImage( tiles[layer].getImage(), (col-map_draw_col)*TILE_SIZE - deducedX + xAdjust, (row-map_draw_row)*TILE_SIZE - deducedY + yAdjust, null); } } } } } } There's some more code in this method but nothing relevant to this question. Basically, the biggest problem is that I iterate over around 5000 tiles (in this specific resolution) 60 times each second. I thought about rendering the visible portion of the map once and storing it into a BufferedImage and when the player moved move the whole image the same amount but to the opposite side and then drawn the tiles that appeared on the screen, but if I do it like that, I wont be able to have animated tiles (at least I think). That being said, any suggestions?

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• What does Visual studio debugger do, when condition should give error

  - by zacharmarz

  I'm debugging some code and I need to break everytime, when character in string (const char *) is equal to something. So I put there breakpoint and attach condition like: s[0] == 'e'. But code I'm debugging is in CRT and there is possibility, that s == 0 is true. So "addressing empty pointer" should give some kind of error. Yes - I could give there condition s != 0, but it would not be such fun :) And I'm curious, what will debugger do when trying to evaluate this condition? How it will behave internally? Obviously it's not giving any error nor stopping on this breakpoint when s == 0 Thanks for your answer.

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• Unable to start GRUB2 on Triple boot Macbook Pro with OS X Lion, Windows 7 and Ubuntu

  - by Shravan

  I installed Windows 7 using Bootcamp. Then I created a partition from the empty space in the Windows partition and another 4GB partition for the linux swap using GParted. I installed Ubuntu 12.04 LTS in the the newly created partition from the Windows partition. Now GRUB2 does not load and I can only see the blinking cursor on the top right when selecting "Windows HD" from the 'option' key at the start up. OS X works fine but nothing else. Could someone please help me fix this? I am attaching the boot-info from the boot-repair tool. http://paste.ubuntu.com/1040169/

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• Gnome 3 Shell extensions not working on Ubuntu 12.4 [closed]

  - by user63960

  Possible Duplicate: Gnome Shell Extension Empty I just upgraded to Ubuntu 12.4 running on a Win 7 box via VBox and switched the user interface to Gnome 3 but have a problem. In Advanced Settings (gnome tweak), the Shell Extensions window has no listings and the Theme window shows a "caution" triangle next to the Shell theme drop box. I have re-installed the default extensions using the Noobs Lab posted instructions: sudo apt-get install shell-extensions3.4 sudo apt-get install gnome-shell-extensions The commands appear to complete without error. Symptoms are: Gnome 2 visual appearance and no window borders or controls. To close a window, I have to click the window indicator in the sys tray and select the close menu item. Any ideas?

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• certain files not syncing

  - by Josh

  I have UbuntuOne set up to sync a one folder with a number of subfolders. For some reason some of the subfolders have stopped syncing. Within one subfolder with 6 subfolders in it, some are showing up empty (they shouldn't be) and some are showing up with only some of the files they should contain. I have synced recently, and newer files are showing up in other subfolders. There's just some problem with these particular folders. They are not especially big nor do they have especially big files in them. Thoughts?

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• Steps to rebuild gspca_kinect driver module?

  - by Bobby Ray

  I recently purchased a Kinect for Windows and quickly discovered that the camera drivers included in linux kernel 3.0+ aren't compatible with the Kinect for Windows hardware revision. After looking at the source code it seems like a tiny modification is all that is required for compatibility, so I've been trying to recompile the driver - to no avail. I've been referring to this article and this one as well, though they are a bit outdated. When I try to compile the module, I get an error because the header file "gspca.h" can't be found in the include path. I located the missing header in my filesystem, but the file itself is empty. I've also tried downloading the kernel source (3.2.0-24-generic), which allowed me to compile the module, but when I load the module I get an error. -1 Unknown symbol in module Is there a standard way to go about this without first building the kernel? Will building the kernel ensure that I can build the module? Thanks

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• Problem typing password when running sudo in terminal

  - by ohm-p

  I have a different problem.When first time I used ubuntu old to new in every version I can easily type password in terminal after sudo command.But now a day I can't because In terminal after sudo command in password i can't able to type any thing like char or number ,but just in password other part in terminal I can type. Now,probelm is there that it don't show password means not that in terminal password is in hide mode.Every time I type in after that it show me" sorry,try again" error message after three time wrong password means empty password it's again come into first position. For solve this problem I used old to new version of ubuntu also format it many time but same problem occured. Please help me because without terminal password I can't install anything.

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• How to connect to the internet via command line or graphical utility given I can't click at the top of the screen?

  - by Ben

  My Ubuntu 12.04 installation has an input problem resulting preventing me from clicking near the top of the screen. That is, there is an unclickable area, circa 60 pixels high and stretching all the way across the screen. I will ask about this in a later question. For now, I would just like to be able to connect to the internet, given this limitation. I am able to access the network connections application by hitting the super key and typing "network connections". There is a LAN and a wireless network available. The network icon in the bar at the top of the screen shows an empty wedge, which I suppose means that wireless is off. I've attached the cable for the Ethernet connection, but it does not seem to have connected automatically. How can I figure out what's going on? (I'll happily edit in the output of any relevant terminal commands.) Thank you.

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• smbmount returns "operation not permitted"

  - by Petriborg

  I use the smbfs tools package to mount my SMB shares. I wrote a quick script to mount the share: #!/bin/sh /usr/bin/smbmount "\\\\somehost.local\\hostshare" /media/hostshare -o user=smbuser,dom=WORKGROUP,uid=localuser,gid=localgroup This script used to work in 9.10 when called by the "localuser" account, but in my fresh-installed 10.04 it fails giving me the error: mount error(1): Operation not permitted Refer to the mount.cifs(8) manual page (e.g. man mount.cifs) The /media/hostshare directory is empty and has these perms: drwxrwxr-x 2 localuser localgroup 4096 2010-12-12 12:04 hostshare/ The "localuser" is in these groups: localgroup adm dialout cdrom plugdev lpadmin admin sambashare Any idea what is going on here? Google seems to suggest that the "sticky" bit needs to be set on /sbin/mount.cifs /sbin/mount.smbfs and /sbin/umount.cifs Is this a bug?

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• Name attribute is obsolete, what is the correct behavior when dealing with anchors?

  - by Tchalvak

  Putting some code through the html5 validator, I get this: Warning: The name attribute on the a element is obsolete. Consider putting an id attribute on the nearest container instead. I find that unclear. Is the "nearest container" for an anchor link the a itself, so that the correct code would be <a id='blah'> instead of <a name='blah'>? Or are empty placeholder <a> tags as a whole deprecated, and anchors can simply point to any element with an id instead?

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• Ubuntu One not syncing fully

  - by wurlyfan

  I have uploaded several folders of data to Ubuntu One from my desktop computer, over the last few weeks, and I can see that all the contents are there when I look at my account on the web. When I look at my laptop (connected to the same account), one of the first folders I uploaded hasn't downloaded completely. New folders added from either device seem to sync correctly, but this one older folder remains almost empty, even though the control panel says file syncing is up-to-date. I have plenty of space available. Stopping and restarting the sync daemon and rebooting the laptop are both ineffective. What can I do to make this folder sync fully? I don't want to risk losing the data (which now exists only in Ubuntu One), and I don't have a lot of broadband data to play with. I've seen several bugs relating to this sort of issue but they're all quite old and apparently fixed, while this is happening on new 13.04 installations on both desktop and laptop.

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• Brightness fn key adjustment problems

  - by npCoder

  My brightness function key controls work after setting grub boot parameter to "acpi_osi=" but using them I cannot adjust the brightness higher than around 70% (there is empty bar left over and I can't adjust higher) unless I go to Brightness & Lock settings manually than I can use the slider to adjust it higher... I primarily use intel_backlight to adjust my backlight and I am running Linux kernel 3.14.1 on Ubuntu 14.04 LTS on an ASUS X550LA Laptop when I try: cd /sys/class/backlight/intel_backlight cat max_brightness 937 cat brightness 811 It seems that I can only adjust to a maximum of 811 using the fn brightness controls If I instead do cd /sys/class/backlight/acpi_video0 cat max_brightness 10 cat brightness 4 cat actual_brightness 10 With the FN keys actual_brightness is not equal to the value returned from brightness on acip_video0 (which is always 4) but on intel_backlight actual_brightness = brightness The adjustment problem seemingly arises because both intel_backlight and acpi_video0 are trying to adjust brightness

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• How do I use Brasero to burn a movie in DVD format?

  - by Ants

  I have to present an assessment for my Uni course in the form of a DVD movie (so it can be played on a DVD player) but so far, Brasero doesn't seem to be doing it. For example, I left it for over an hour today (as it said it was burning) and the DVD came out empty. Other times, it flat out says it cannot burn the DVD. I am running Ubuntu 10.10, I have ubuntu restricted extras installed and the Medibuntu packages that allow me to watch DVDs. Any ideas?

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• XNA GameTime TotalGameTime slower than real time

  - by robasaurus

  I have set-up an empty test project consisting of a System.Diagnostics.Stopwatch and this in the draw method: spriteBatch.DrawString(font, gameTime.TotalGameTime.TotalSeconds.ToString(), new Vector2(100, 100), Color.White); spriteBatch.DrawString(font, stopwatch.Elapsed.TotalSeconds.ToString(), new Vector2(100, 200), Color.White); The GameTime.TotalGameTime displayed is slower than the stop watch (by about 5 seconds per minute) even though GameTime.IsRunningSlowly is always false, why is this? The reason this is an issue is because I have a server which uses stopwatch and it is faster than my client game. For instance my client notifies the server it has dropped a mine which explodes in one minute. Because the stopwatch is faster the server state explodes the mine before the client and they are out of sync. I don't want to have to notify the client when the server explodes it as this would use unnecessary bandwidth.

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