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• Regarding sprite design and resolution for tablets and phones

  - by Dimitris P.

  I am about to start working on a game for android devices, in my spare time, to get familiar with android development. I'm more interested in using the best practices possible than getting a quick result, and that is why I need some guidance regarding graphics. I think the game is going to be fully sprite based. Everything is going to be in .bmp form, or something similar, and my question is: Should I design the sprites in a small resolution (ie for phone screens) and scale them up to fit into larger screens (tablet screens), should I do it vice-versa or should I consider a completely different approach? Would designing a different set of sprites for each of the most used resolution settings be worth it or are there simpler solutions to the problem with fewer drawbacks than the ones I mentioned above? (If I follow the first approach, for example, the larger the screen the worse the graphics will get, since every pixel of the original drawing will cover several pixels on the screen). Is there a standard approach for dealing with this kind of problems? If you need me to be more detailed or more clear about something I mentioned (or forgot to) please don't hesitate to ask. Also, excuse me for any inaccurate use of the English language. Thank you in advance for your input.

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• 2D XNA C#: Texture2D Wrapping Issue

  - by Kieran

  Working in C#/XNA for a Windows game: I'm using Texture2D to draw sprites. All of my sprites are 16 x 32. The sprites move around the screen as you would expect, by changing the top X/Y position of them when they're being drawn by the spritebatch. Most of the time when I run the game, the sprites appear like this: and when moved, they move as I expect, as one element. Infrequently they appear like this: and when moved it's like there are two sprites with a gap in between them - it's hard to describe. It only seems to happen sometimes - is there something I'm missing? I'd really like to know why this is happening. [Edit:] Adding Draw code as requested: This is the main draw routine - it first draws the sprite to a RenderTarget then blows it up by a scale of 4: protected override void Draw(GameTime gameTime) { // Draw to render target GraphicsDevice.SetRenderTarget(renderTarget); GraphicsDevice.Clear(Color.CornflowerBlue); Texture2D imSprite = null; spriteBatch.Begin(SpriteSortMode.FrontToBack, null, SamplerState.PointWrap, null, null); ManSprite.Draw(spriteBatch); base.Draw(gameTime); spriteBatch.End(); // Draw render target to screen GraphicsDevice.SetRenderTarget(null); imageFrame = (Texture2D)renderTarget; GraphicsDevice.Clear(ClearOptions.Target | ClearOptions.DepthBuffer, Color.DarkSlateBlue, 1.0f, 0); spriteBatch.Begin(SpriteSortMode.FrontToBack, null, SamplerState.PointClamp, null, null); spriteBatch.Draw(imageFrame, new Vector2(0, 0), null, Color.White, 0, new Vector2(0, 0), IM_SCALE, SpriteEffects.None, 0); spriteBatch.End(); } This is the draw routine for the Sprite class: public virtual void Draw(SpriteBatch spriteBatch) { spriteBatch.Draw(Texture, new Vector2(PositionX, PositionY), null, Color.White, 0.0f, Vector2.Zero, Scale, SpriteEffects.None, 0.3f); }

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• Check Out Eye Tracking, Mobile, and Fusion Apps at Apps UX Demo Pods

  - by Oracle OpenWorld Blog Team

  By Kathy Miedema, Oracle Applications User Experience Among the many cool things to see at the Oracle OpenWorld DEMOgrounds this year will be demo pods featuring some of the cutting-edge tools in Oracle’s arsenal of usability evaluation methods.OK, so we’re bragging a little. But past conference goers agree – these demos consistently hit the Top 10 for number of visits. Why? Because you get to try out our eye-tracking tool, which follows where a user looks on a screen and helps the UX team decipher issues with navigation design. Or you can see our facial gesture analysis tool in action, which helps us read the emotions you might be experiencing as you look at a screen – happy, sad, or dismayed, to name a few. Are you interested in Oracle’s strategy for user experience? Come to the Apps UX pods for a look at enterprise applications on mobile devices including smart phones and the iPad. Stay for a demo of self-service or CRM tasks in the Fusion Applications welcome experience. The DEMOgrounds for Oracle Applications are located on the lower level of Moscone West. Hours for the Exhibition Hall are Monday, October 1: 9:30 a.m. to 6:00 p.m. Tuesday, October 2: 9:45 a.m. to 6:00 p.m. Wednesday, October 3: 9:45 a.m. to 4:00 p.m.  Not yet registered for Oracle OpenWorld? Register now!

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• How do you prevent the dock from switching monitors in OSX Mavericks?

  - by Brad Dwyer

  In Mavericks, Apple introduced a "feature" where if you hover at the bottom of any screen the dock pops up on that screen. This is disrupting my workflow as I am constantly having the dock pop up when I don't want it to and then I have to go to another window and hover at the bottom for several seconds to get it to go away so I can click on what I was trying to in the first place. I don't want the dock to move; I want it to stay on the bottom of my right-most monitor like it always has. How can I adjust this in OSX Mavericks?

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• Redirect input from one terminal to another

  - by Niki Yoshiuchi

  I have sshed into a linux box and I'm using dvtm and bash (although I have also tried this with Gnu screen and bash). I have two terminals, current /dev/pts/29 and /dev/pts/130. I want to redirect the input from one to the other. From what I understand, in /dev/pts/130 I can type: cat </dev/pts/29 And then when I type in /dev/pts/29 the characters I type should show up in /dev/pts/130. However what ends up happening is that every other character I type gets redirected. For example, if I type "hello" I get this: /dev/pts/29 | /dev/pts/130 $ | $ cat </dev/pts/29 $ el | hlo This is really frustrating as I need to do this in order to redirect the io of a process running in gdb (I've tried both run /dev/pts/# and set inferior-tty /dev/pts/# and both resulted in the aforementioned behavior). Am I doing something wrong, or is this a bug in bash/screen/dvtm?

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• Remote Desktop not following display settings

  - by John

  I have my RDP client set up to use highest settings for connecting to another PC on my LAN, which has display settings 1280x1024x32bit. RDP is specifically set to use 32bit depth, but when I connect it drops to 16bit. The PC I connect to is (amongst other things) used to do some 3D graphics. I don't expect great performance, just to check it works... but it doesn't over RDP, the 3D app doesn't think the hardware is the same. Does RDP's integration with Windows mean it is providing some virtualised rendering system? Should I use something less 'clever' like VNC, to literally screen-grab the contents of the screen without altering the settings?

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• How to move an UIView along a curved CGPath according to user dragging the view

  - by Felipe Cypriano

  I'm trying to build a interface that the user can move his finger around the screen an a list of images moves along a path. The idea is that the images center nevers leaves de path. Most of the things I found was about how to animate using CGPath and not about actually using the path as the track to a user movement. I need to objects to be tracked on the path even if the user isn't moving his fingers over the path. For example (image bellow), if the object is at the beginning of the path and the user touches anywhere on the screen and moves his fingers from left to right I need that the object moves from left to right but following the path, that is, going up as it goes to the right towards the path's end. This is the path I've draw, imagine that I'll have a view (any image) that the user can touch and drag it along the path, there's no need to move the finger exactly over the path. If the user move from left to right the image should move from left to right but going up if need following the path. This is how I'm creating the path: CGPoint endPointUp = CGPointMake(315, 124); CGPoint endPointDown = CGPointMake(0, 403); CGPoint controlPoint1 = CGPointMake(133, 187); CGPoint controlPoint2 = CGPointMake(174, 318); CGMutablePathRef path = CGPathCreateMutable(); CGPathMoveToPoint(path, NULL, endPointUp.x, endPointUp.y); CGPathAddCurveToPoint(path, NULL, controlPoint1.x, controlPoint1.y, controlPoint2.x, controlPoint2.y, endPointDown.x, endPointDown.y); Any idead how can I achieve this?

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• Packard Bell EasyNote MZ35 freezes when AC unplugged and wireless on

  - by Sense Hofstede

  I would like to ask for some help debugging an irritating problem I'm having with my Packard Bell EasyNote MZ35 and Ubuntu 10.10. Always when the laptop is connected to a wireless network and the AC power lead is unplugged—so it's running on battery power—the system freezes. The screen turns black and shows the error GLib-WARNING **: getpwuid_r(): failed due to unknown user id (0), although this error is completely unrelated to the actual problem. Previous searches on the internet indicate that this error is unrelated to the bug I'm experiencing. It is suggested that Ubuntu tries to hibernate or suspend and that you're seeing the black screen running 'behind' the X server. That would explain the fact that curiously you still see—but cannot move—the mouse cursor. I've already set all the values of the GConf keys in /apps/gnome-power-manager/actions/ to 'nothing', disabled all power management actions I could find, but it didn't solve the problem. It is important to note that the freeze doesn't happen immediately after you unplug the AC power lead. The icon in the notification area may have changed already, but the freeze only occurs when the Notify OSD bubble appears that tells you how many time is left with your battery. Does anyone here have a clue about this problem? A workaround or the cause? If anyone could help me with disabling possible suspend/hibernate behaviour that might be related to this issue, that would be appreciated too. This issue has been reported as bug #666852.

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• Use TV (hdmi) with non-square pixels

  - by labsin

  I am having a problem when I connect my LG plasma tv (with a native resolution of 1024x768 pixels) to my 12.04 laptop. The pixels (actual pixels, not the signal) of my TV are stretched so it gets his 16:9 ratio. The pixels are rectangular (1.3333x1). Everything I display from my laptop oviously get stretched (4:3 stretched to 16:9). There is a different dpi in X and Y needed for it to display properly (some kind of anamorphic mode). Default Ubuntu uses a dpi of 96x96. I can change it using xrandr, but only square eg 100x100 or 70x70. Already looked here, but it seems Ubuntu totally ignore the displaySize in xorg.conf When I use the code below to see the dpi and nothing I do changes it. The displaySize also stays the same (calculated using 96 dpi and the resolution) xdpyinfo | grep -B2 resolution I use the propretary ATI drivers for my ATI Mobility Radeon HD 50xx but it is the same with the Radeon drivers. My temporary solution is to use: xrandr --output DFP1 --mode 1024x768 --scale 1.333333333333x1 --output LVDS --off But with this the right side of the screen is nog accesable. This is a known problem with xrandr --scale and ubuntu. This is because of a patch for the mouse/windows not going outside the screen. I search a way to change the DisplaySize or the dpi(to something not square like 128x96) when I connect the display.

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• Remove LCD Stand for Wall Mounting - FSM-270YG

  - by Benjamin Chambers

  Based on Jeff Atwood's post on Coding Horror, I ordered one of these monitors, and I've been absolutely loving it. However, I recently (i.e. today) took the next step in monitor-y goodness and fastened the sucker to an articulated wall mount. Unfortunately, I can't figure out how to remove the stand. The flat portion comes off with a single screw, but the leg it fastens to has no apparent method of removing it. Has anyone figured out a trick for removing these, so they don't just stick out below the screen? Should I remove the screws from the backside of the screen, and look for an internal connection to remove? Or just give up and live with it? (After all, it's a great display, it's floating in the air in front of me, and the stand leg is only a minor annoyance).

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• Xna Equivalent of Viewport.Unproject in a draw call as a matrix transformation

  - by Nick Crowther

  I am making a 2D sidescroller and I would like to draw my sprite to world space instead of client space so I do not have to lock it to the center of the screen and when the camera stops the sprite will walk off screen instead of being stuck at the center. In order to do this I wanted to make a transformation matrix that goes in my draw call. I have seen something like this: http://stackoverflow.com/questions/3570192/xna-viewport-projection-and-spritebatch I have seen Matrix.CreateOrthographic() used to go from Worldspace to client space but, how would I go about using it to go from clientspace to worldspace? I was going to try putting my returns from the viewport.unproject method I have into a scale matrix such as: blah = Matrix.CreateScale(unproject.X,unproject.Y,0); however, that doesn't seem to work correctly. Here is what I'm calling in my draw method(where X is the coordinate my camera should follow): Vector3 test = screentoworld(X, graphics); var clienttoworld = Matrix.CreateScale(test.X,test.Y, 0); animationPlayer.Draw(theSpriteBatch, new Vector2(X.X,X.Y),false,false,0,Color.White,new Vector2(1,1),clienttoworld); Here is my code in my unproject method: Vector3 screentoworld(Vector2 some, GraphicsDevice graphics): Vector2 Position =(some.X,some.Y); var project = Matrix.CreateOrthographic(5*graphicsdevice.Viewport.Width, graphicsdevice.Viewport.Height, 0, 1); var viewMatrix = Matrix.CreateLookAt( new Vector3(0, 0, -4.3f), new Vector3(X.X,X.Y,0), Vector3.Up); //I have also tried substituting (cam.Position.X,cam.Position.Y,0) in for the (0,0,-4.3f) Vector3 nearSource = new Vector3(Position, 0f); Vector3 nearPoint = graphicsdevice.Viewport.Unproject(nearSource, project, viewMatrix, Matrix.Identity); return nearPoint;

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• Upgrade from 11.04 to 12.04 failed - unable to login

  - by Tobias M.

  Yesterday i updgraded from 10.04 to 12.04 via the update-manager. At the end it said "Failed to upgrade due to too many errors". Before that i got a lot of error messages that said packages could ne configured - they were all related to mono. Then it force me to restart. When booting now, I see the pink screen (without logo). After that it turns black and the cursor appears. Then its falshing around between beeing bright and dark and showing the cursor and not showing it. But no way i see the login-screen. At the moment i am not able to boot frm usb since my usb device is too large to be formated to FAT-32 (8GB). This all is happening on this machine: AMD E-350 Processor (2x1,65Ghz) 4GB DDR3 RAM 320GB SATA II Hard drive AMD® Radeon™ HD 6320 Thanks in advance to everyone who trys helping me ;) I have to continue working with data from this machine so i´d be pleased to get my data accessible. Greets ;)

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• How can I set external monitor as default?

  - by iJeeves

  I have connected an external monitor to my laptop through HDMI. Currently either my Desktop is getting extended to the external monitor (with native resolution) or low resolution on both when I choose "Same Image in both". How can I ensure that the external monitor is used by default and the laptop monitor just blanks. I generated the xorg.conf file by doing: X -configure The following is the content of xorg.conf.new file generated in my user folder. Should I copy this anywhere? Should I edit the contents? Section "ServerLayout" Identifier "X.org Configured" Screen 0 "Screen0" 0 0 InputDevice "Mouse0" "CorePointer" InputDevice "Keyboard0" "CoreKeyboard" EndSection Section "Files" ModulePath "/usr/lib/xorg/modules" FontPath "/usr/share/fonts/X11/misc" FontPath "/usr/share/fonts/X11/cyrillic" FontPath "/usr/share/fonts/X11/100dpi/:unscaled" FontPath "/usr/share/fonts/X11/75dpi/:unscaled" FontPath "/usr/share/fonts/X11/Type1" FontPath "/usr/share/fonts/X11/100dpi" FontPath "/usr/share/fonts/X11/75dpi" FontPath "/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType" FontPath "built-ins" EndSection Section "Module" Load "glx" Load "dri2" Load "record" Load "extmod" Load "dbe" Load "dri" EndSection Section "InputDevice" Identifier "Keyboard0" Driver "kbd" EndSection Section "InputDevice" Identifier "Mouse0" Driver "mouse" Option "Protocol" "auto" Option "Device" "/dev/input/mice" Option "ZAxisMapping" "4 5 6 7" EndSection Section "Monitor" Identifier "Monitor0" VendorName "Monitor Vendor" ModelName "Monitor Model" EndSection Section "Device" ### Available Driver options are:- ### Values: : integer, : float, : "True"/"False", ### : "String", : " Hz/kHz/MHz", ### : "%" ### [arg]: arg optional #Option "NoAccel" # [] #Option "SWcursor" # [] #Option "ColorKey" # #Option "CacheLines" # #Option "Dac6Bit" # [] #Option "DRI" # [] #Option "NoDDC" # [] #Option "ShowCache" # [] #Option "XvMCSurfaces" # #Option "PageFlip" # [] Identifier "Card0" Driver "intel" BusID "PCI:0:2:0" EndSection Section "Screen" Identifier "Screen0" Device "Card0" Monitor "Monitor0" SubSection "Display" Viewport 0 0 Depth 1 EndSubSection SubSection "Display" Viewport 0 0 Depth 4 EndSubSection SubSection "Display" Viewport 0 0 Depth 8 EndSubSection SubSection "Display" Viewport 0 0 Depth 15 EndSubSection SubSection "Display" Viewport 0 0 Depth 16 EndSubSection SubSection "Display" Viewport 0 0 Depth 24 EndSubSection EndSection

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• Homegroup doesn't show other computers, but "Network" does

  - by McPherrinM

  I have a desktop and a laptop (both running windows 7) in my Windows 7 homegroup. The desktop created the homegroup, and the laptop joined it. Both share a few folders. On the laptop, I have no problem accessing the Desktop's shared folders via the "Homegroup" sidebar button in Windows Explorer. However, on the Desktop, I get the message No other homegroup computers are currently available in the homegroup screen. However, if I go to the Network page, I can see the other computer and browse its shared media. These shares were made by right clicking and choosing "Share with Homegroup". I can access the media, so this isn't a big problem, but I'm just confused as to why the Homegroup screen denies the existence of the other computer. Has anybody else encountered and resolved this?

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• How do I setup a systemd service to be started by a non root user as a user daemon?

  - by Hans

  I just finished the install and setup process of systemd on my arch-linux system (2012.09.07). I uninstalled initscripts (and removed the configuration files). What I want to do is create a service that can be started and stopped by a non-root user. The service is to start a detached screen session running rtorrent. However I want every user on the system who has set this service to start (enabled) to have a particular instance started for them specifically. How would one go about doing this? I remember reading that systemd supports user instances of services, however I have been unable to find any information on how to set this up, or whether it relates to what I am looking for. Service file that I have used for system: [Unit] Description=rTorrent [Service] Type=forking ExecStart=/usr/bin/screen -d -m -S rtorrent /usr/bin/rtorrent ExecStop=/usr/bin/killall -w -s 2 /usr/bin/rtorrent

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• A Virtual Dilemma

  - by antony.reynolds

  Solving a Gotcha with VirtualBox Guest Additions I was just building a new virtual machine based off an existing image that didn’t have the Virtual Box Guest Additions enabled.  The guest additions allow tight integration between the guest OS and the host environment, providing seemless mouse transfer and the ability to take advantage of full video screen size.  The guest additions need to be linked with the kernel which requires the kernel-devel package to be installed.  After installing this package and then trying to add the guest additions it failed, suggesting that I might not have the kernel-devel package that I had installed.  After a little though I finally realized what had happened.  When I grabbed the kernel-devel package I hadn’t checked the version of my kernel.  The kernel-devel I downloaded didn’t match the revision of the kernel I was running!  Hence my problems.  I upgraded the kernel to the same revision as my kernel-devel package and rebooted.  I had installed dkms so I was pleased to see that my VBox Additions successfully built and the mouse and screen now worked as expected. So now you know my embarrassing story for the day :-)

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• PowerBroker (Likewise-Open) + Ubuntu 13.04 -> 13.10 Upgrade

  - by JoBu1324

  I just upgraded Ubuntu from 13.04 to 13.10, and now I can't log into Active Directory; my system is integrated using PowerBroker Identity Services (PBIS), which used to be called Likewise-Open. So far I have identified the following symptoms: I am able to log in with my credentials via ssh. The screen goes black when attempting log into my account via the login screen. I've tried leaving the domain, purging PBIS, and re-installing the latest version of PBIS. I've been trying the troubleshooting section I found here, but I haven't had any success. The relevant portion of the auth.log Oct 22 09:30:26 mypc lightdm: pam_succeed_if(lightdm:auth): requirement "user ingroup nopasswdlogin" not met by user "myusername" Oct 22 09:30:29 mypc lightdm: pam_unix(lightdm-greeter:session): session closed for user lightdm Oct 22 09:30:29 mypc lightdm: pam_unix(lightdm:session): session opened for user myusername by (uid=0) Oct 22 09:30:29 mypc lightdm: pam_unix(lightdm:session): session closed for user myusername Oct 22 09:30:30 mypc lightdm: pam_unix(lightdm-greeter:session): session opened for user lightdm by (uid=0) Oct 22 09:30:30 mypc systemd-logind[718]: New session c5 of user lightdm. Oct 22 09:30:30 mypc lightdm: pam_ck_connector(lightdm-greeter:session): nox11 mode, ignoring PAM_TTY :1 Oct 22 09:30:31 mypc dbus[535]: [system] Rejected send message, 2 matched rules; type="method_call", sender=":1.129" (uid=110 pid=5139 comm="/usr/lib/x86_64-linux-gnu/indicator-keyboard-servi") interface="org.freedesktop.DBus.Properties" member="GetAll" error name="(unset)" requested_reply="0" destination=":1.39" (uid=0 pid=2024 comm="/usr/sbin/console-kit-daemon --no-daemon ") My .xsession-errors log Script for ibus started at run_im. Script for auto started at run_im. Script for default started at run_im. /usr/sbin/lightdm-session: 5: exec: init: not found

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• Libre Office/Writer PDF export: white borders appear between lines even after setting borders to none

  - by Yttric

  My document prints ok (exactly as it appears on the screen in Libre Office), but when I export to PDF and view the PDF on screen there are white borders around each text or picture object. Here's a sample snapshot from PDF/Preview: http://imgur.com/TWip5 I've tried selecting a paragraph and changing the border property to None as described in Libre Office help (http://help.libreoffice.org/Common/Borders), setting the "Line arrangement Default" to "Set no borders". But borders set by the Format dialog don't correspond to the borders I see in PDF/Preview. In PDF/Preview the border appears on line boundaries. Borders set in Format appear around each picture, for example. What am I doing wrong?

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• Process ANSI escape codes before piping

  - by Tiddo

  I'm trying to pipe the output of a script (Mocha) to another script. However there is one problem: Mocha generates quite a few ansi escape characters to update the screen on the fly. These characters are also send through the pipe. Is there a way to process the ansi sequence such that the output is the same as the final output to the screen? I do want to keep color escape sequences, but not the curser movement escapes. Edit: I have a partial solution now (for Mocha only): so far it seems that Mocha with the spec output (the one I use) only generates color ecape characters and the CSI 0G escape sequence. The CSI 0G escape character means that the cursor should move back to the beginning of the line. Mocha uses this to overwrite a line completely. Therefore you could simply create a sed regexp which will delete everything up to that escape sequence on a line: sed 's/^.*\x1b\[0G//g'. I am still looking for the complete solution though.

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• Corporate IM with video that actually works, suggestions?

  - by Erik P. Skaalerud

  Hi. Does anyone here have a suggestion for a cross-platform IM solution wich will work with voip/video on both Windows (XP and 7) and Mac OS X from 10.4 and upwards? Right now were in a kind of mixed enviroment, with some Mac users using iChat server since they need video support (conference across several offices over VPN), but it wont't work on windows clients. The rest of us are happily using Openfire+Spark, but there's no VoIP or video avaible from what i've found, unless you want to add in several 3rd party software (like red5 and asterisk). Requirements: As said before; must work on both Windows and Mac Internal server (no Skype etc) File transfer between platforms SSO (Single Sign-On) via Active Directory authentication Some sort of screen sharing would be a plus, like switching over to a screen capture (powerpoint, software training etc) We can afford to buy software if that's needed to get this working without any hiccups across platforms. Pre-thanks to anyone who gives suggestions.

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• disable subtitles in mkv in quicktime

  - by Halst

  I want to watch movies without subtitles. And I also like QuickTime for the feature that it could extend the frame to fit the screen (even though it hides some area from the sides). I have Perian installed and I want to watch mkv files, but they are all with subtitles. In QuickTime in View-Subtitles the only option is Off, but still I can see the subtitles. VLC plays same movies without subtitles, but it doesn't have this nice feature of extending the movie frame so that it fits the screen.

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• Ubuntu impossible to install: "unable to find a medium containing a live filesystem"

  - by Lorenzo

  Yes, I have read questions and answers with similar titles for this issue, which prevented me from installing Ubuntu for several MONTHS now, trying to figure it out. I have a MacBookPro with triple partition (one for Mac Snow Leopard, one for Windows 7, one for Linux) created with reFIT firmware (not BootCamp). I set up the system according to these instructions for reFIT: http://lifehacker.com/5531037/how-to-triple+boot-your-mac-with-windows-and-linux-no-boot-camp-required Now. There is a free partition ready to accept Linux into its arms, but Linux does not want to participate. Most answers to the issue "unable to find a medium containing a live filesystem" point to changing the BIOS booting system (which I don't know how to do, especially using this reFIT booting system), and to changing the socket of the USB (which does not concern me, since I am using a CD, actually I tried with a CD, then with a DVD, since a blank CD is only 700MB while the iso image file of Ubuntu is about 731MB). Anyway. This is what happens: I am in the Mac system (using the Mac partition) I insert the DVD with the burned image of Ubuntu (yes I have tried burning it again and agin on both CD and DVD blank discs). I restart the computer. When reFIT loads, I hold down the ALT key until the CD image appears. I select it, and hit Enter. A small Ubuntu icon appears at the bottom of the screen. Then a Ubuntu sign appears in the middle of the screen with small dots underneath, lighting up progressively over and over to indicate it's loading. Then everything turns black and the following message appears, at the end of a few lines of text: "unable to find medium with live file system". Please provide very practical suggestions on what to do to an unexperienced wannabe Ubuntu very patient user. Please start by saying how do I access the BIOS setup from reFIT bootup, and exactly what and why I need to try and change. (Will this mess up my reFIT bootup?) And anything else I need to do to finally be able to install Ubuntu. Thanks

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• Disable public Tomcat6 stack trace

  - by The NinjaSysadmin

  Can anyone advise me how I can go about disabling Tomcat6 from displaying stacktrace output to the browser? Tomcat: 6.0.29 I have made the following changes to /opt/apache-tomcat-6.0.29/conf/web.xml <error-page> <exception-type>java.lang.Throwable</exception-type> <location>/error.jsp</location> </error-page> I'm told putting this in place will give a white screen if the file doesn't exist, however I'm getting stack traces to the screen.

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• Installing Vista on a BSOD Windows 7 (ASAP)

  - by anonymous

  On a previous question i posted, i asked for help on fixing my windows vista box because it keeps going to blue screen. No one seems to have the answer, so now i want to install Windows 7. I want to know if i can install 7 without having to reformat my hard drive and having to lose all my files. I've already confirmed the hardware is working because i installed Ubuntu 9.10 on my external hard drive and it runs on my system fine. I tested the memory using vista's memory test and Ubuntu's memory test. here's the previous post: http://superuser.com/questions/125897/i-really-need-help-resolving-a-window-vista-bsod-blue-screen-crash-on-my-deskto

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• What's wrong with my custom .desktop xsession?

  - by Noam Gagliardi

  I want to create a custom Xmonad session that loads an .xsession script in my home folder. This is the original file I copied. This one works: [Desktop Entry] Encoding=UTF-8 Name=XMonad Comment=Lightweight tiling window manager Exec=xmonad Icon=xmonad.png Type=XSession This is my modified file, xmonad-custom.desktop. When I logout, then login choosing this "xmonad-custom", the screen just flashes and sends me back to the ubuntu login screen (as if it briefly logs in and out of the session): [Desktop Entry] Encoding=UTF-8 Name=XMonad Custom Comment=Lightweight tiling window manager Exec=/home/{username}/.xsession Icon=xmonad.png Type=XSession X-Ubuntu-Gettext-Domain=gdm I also tried without the last line. This is my ~/.xsession file, in case there's an error with this script: #!/bin/env bash xrdb -merge .Xresources trayer --edge top --align right --SetDockType true --SetPartialStrut \ true --expand true --width 15 --height 12 --transparent true --tint 0x000000 & dropbox start & exec xmonad

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