Search Results

Search found 409 results on 17 pages for 'brightness'.

facebook twitter digg google delicious technorati stumbleupon myspace wordpress linkedin gmail igoogle windows live tumblr viadeo yahoo buzz yahoo mail yahoo bookmarks favorites email print

Page 7/17 | < Previous Page | 3 4 5 6 7 8 9 10 11 12 13 14  | Next Page >

  • Where do I find display brightness controls in Lubuntu?

    - by dlanod
    I'm looking for a control to be able to change my standard display brightness in Lubuntu. I've tried How do I set default display brightness? but my system settings does not include a Screen option. I've also tried Power Manager, Monitor Settings and Screensaver under Preferences and couldn't spot anything to control this option. The function key mappings (this is a laptop) work to change the brightness, but I'm looking for a UI option as the laptop is physically set up to be mouse-based (keyboard is hard to access with how we've got it set up).

    Read the article

  • Screen gets stuck in a dim setting after waking up

    - by Mason Wheeler
    I've got a laptop that I recently upgraded from Vista to Windows 7. It works a lot better now for a lot of things, but there's one problem I've had happen a few times that never happened under Vista. When I put the system to sleep, then occasionally when I wake it up again, for no apparent reason, the screen's dim. Sometimes it's as if half the backlighting was turned off, and sometimes it's as if all the backlighting was turned off, all except for the mouse pointer, which remains as bright white as ever. Trying to change the screen's brightness does nothing, but rebooting fixes this. Has anyone else seen this? Any ideas on what's causing it or how to make it stop happening?

    Read the article

  • Screen gets stuck in a dim setting after waking up

    - by Mason Wheeler
    I've got a laptop that I recently upgraded from Vista to Windows 7. It works a lot better now for a lot of things, but there's one problem I've had happen a few times that never happened under Vista. When I put the system to sleep, then occasionally when I wake it up again, for no apparent reason, the screen's dim. Sometimes it's as if half the backlighting was turned off, and sometimes it's as if all the backlighting was turned off, all except for the mouse pointer, which remains as bright white as ever. Trying to change the screen's brightness does nothing, but rebooting fixes this. Has anyone else seen this? Any ideas on what's causing it or how to make it stop happening?

    Read the article

  • Set brightness, contrass on selected image

    - by Viral
    hi, I want to set brightness and contrast on the image that is selected from the photo library of iphone, is there any way to do the same using/not using open GLES. I've got some code from the developer.apple.com but that is for a single image and i can't use images from photo library, do any one know please let me know how to this. regards viral.

    Read the article

  • compact framework windows CE using ExtEscape to control the brightness

    - by mack369
    I need to be able to control brightness of my Windows CE 5.0 device. I've found that there is an API function ExtEscape to do that ( http://msdn.microsoft.com/en-us/library/aa453063 ) but it needs a structure ContrastCmdInputParm (http://msdn.microsoft.com/en-us/library/Aa447689 ) as a parameter. Since ExtEscape is unmanaged, I cannot pass a .net structure. What is the simplest way to call this function?

    Read the article

  • Eee PC brighness contol with 12.04 release

    - by Terry
    is there a solution to the low screen brightness issue with the Eee PC and release 12.04? When I use the brightness control, the screen goes through three adjustment cycles of dark to semi bright, but never gets to bright. As you index the control up, brightness increases, then suddenly cuts back to dark. use the brightness button to further increase the brightness and the same cycle happens. As though there are three distinct brightness events, each one setting back to low level. Under no circumstances other than initial boot up can you get to a bright screen. I just finished installing 12.04 on two Acer (Gateway netbooks) with no brightness issue. Just on the Eee PC

    Read the article

  • After my laptop wakes up from sleeping/hibernating, the LCD/brightness is very low. How can I set it to default?

    - by meder
    In Power Management Preferences, On AC Power tab, I have brightness to 100%. "Dim display when idle" is not checked. I know for sure my LCD brightness is capable of going higher, because if I hit Fn and F7 then it resets the monitor brightness and settings for a few seconds, but the resolution breaks and then the brightness goes back. PS: OS is Debian Lenny ( I set the tags but for clarification ) and laptop is a Thinkpad.

    Read the article

  • Bitmap brightness issue in c++

    - by Suriyan Suresh
    I have used the following code to adjust the image brightness, i am testing this application in Samsung BADA Platform and its SDK, While i am running this application in bada simulator it never ends runs infinity. Please point out the mistake in the code int BitmapWidth = 0, BitmapHeight = 0; result r = E_SUCCESS; BufferInfo myBuffer; Osp::Media::Image *pImage = null; Osp::Graphics::Canvas *pCanvas = null; Osp::Graphics::Rectangle *pRect = null; String path("/Media/Images/tom1.jpg"); pImage = new Osp::Media::Image(); r = pImage->Construct(); pBitmap2 = pImage->DecodeN(path, BITMAP_PIXEL_FORMAT_ARGB8888,LCD_WIDTH, LCD_HEIGHT); BitmapWidth = pBitmap2->GetWidth(); BitmapHeight = pBitmap2->GetHeight(); pBitmap2->Lock( myBuffer); int nVal = 0; int stride = myBuffer.pitch; byte *p= (byte *)(void *)myBuffer.pPixels; int nWidth = BitmapWidth *3; int nOffset = stride - BitmapWidth*4; for (int y = 0; y < BitmapHeight; ++y) { for (int x = 0; x < nWidth; ++x) { nVal = (int) (p[0] + nBrightness); if (nVal < 0) nVal = 0; if (nVal > 255) nVal = 255; p[0] = (byte) nVal; ++p; } p+= nOffset; } pBitmap2->Unlock(); pCanvas = GetCanvasN(); // Step 3: Create Rectangle pRect = new Osp::Graphics::Rectangle(0, 0, LCD_WIDTH, LCD_HEIGHT); r = pCanvas->DrawBitmap(*pRect, *pBitmap2); pCanvas->Show(); RequestRedraw(true); delete pBitmap2; delete pCanvas; delete pRect;

    Read the article

  • How do you adjust screen brightness on Acer laptop?

    - by Noobatlife
    I have an Acer Aspire one 5742 laptop. I installed Linux Ubuntu 12.10 on it. I have one problem with it. no matter how I press the Fn+ up or Fn + down keys I cannot adjust the Screen Brightness. It is at its maximum brightness and this drains the laptop battery. I did some googling and found out that you needed to change some settings in the grub file but I don't know exactly what to do. Can anyone help me?

    Read the article

  • Combine Two Shader Program

    - by Siddharth
    For my android application, I want to apply brightness and contrast shader on same image. At present I am using gpuimage plugin. In that I found two separate program for brightness and contrast as per the following. Contrast shader: varying highp vec2 textureCoordinate; uniform sampler2D inputImageTexture; uniform lowp float contrast; void main() { lowp vec4 textureColor = texture2D(inputImageTexture, textureCoordinate); gl_FragColor = vec4(((textureColor.rgb - vec3(0.5)) * contrast + vec3(0.5)), textureColor.w); } Brightness shader: varying highp vec2 textureCoordinate; uniform sampler2D inputImageTexture; uniform lowp float brightness; void main() { lowp vec4 textureColor = texture2D(inputImageTexture, textureCoordinate); gl_FragColor = vec4((textureColor.rgb + vec3(brightness)), textureColor.w); } Now applying both of the effects I write following code varying highp vec2 textureCoordinate; uniform sampler2D inputImageTexture; varying highp vec2 textureCoordinate2; uniform sampler2D inputImageTexture2; uniform lowp float contrast; uniform lowp float brightness; void main() { lowp vec4 textureColorForContrast = texture2D(inputImageTexture, textureCoordinate); lowp vec4 contastVec4 = vec4(((textureColorForContrast.rgb - vec3(0.5)) * contrast + vec3(0.5)), textureColorForContrast.w); lowp vec4 textureColorForBrightness = texture2D(inputImageTexture2, textureCoordinate2); lowp vec4 brightnessVec4 = vec4((textureColorForBrightness.rgb + vec3(brightness)), textureColorForBrightness.w); gl_FragColor = contastVec4 + brightnessVec4; } Doesn't able to get desire result. I can't able to figure out what I have to do next? So please friends help me in this. What program I have to write?

    Read the article

  • Expiry time in notify-send notifications

    - by gsingh2011
    On my HP computer running Ubuntu 12.04, the brightness and volume increments were much higher than I wanted. On top of that, the notification for the volume was just plain wrong (0% sound did not correspond to 0 on the progress bar). So I decided to override these options with my own commands. I used CompizConfig Settings Manager to add custom commands to the brightness and volume keys (this couldn't be done in the regular settings because these keys were handled by the BIOS, unlike normal function keys). I used xbacklight to control the brightness and amixer to control the volume. The problem is that the nice notify-send notifications don't show up when I manually set the brightness/volume, so now I have to do that myself too. However, there are two problems with notify-send: The expire time option doesn't work You have to wait until a notification is finished before the next one comes up Before I overrided the brightness/volume keys, the system was able to send notifications without these two restrictions. Notifications disappeared within 3 seconds (instead of the default 10), and if I double tapped the volume or brightness button, the progress bar would immediately change to the new brightness (instead of showing the old progress bar for 10 seconds and then showing the new one). Since the system was able to do it, I was wondering how I can achieve the same type of notifications?

    Read the article

  • Can turning off drm_kms_helper polling affect screen brightness control?

    - by dodecaphonic
    I have a Samsung R430 notebook that has been running Ubuntu for close to a year, now. Since I've upgrated to Maverick, I've been dealing with little, but increasingly annoying issues, that put my faith to question. The first one, a CPU-intensive set of drm_kms_helper, made me compile my own kernel and set polling to off just so I could move my mouse without frequent stuttering. That led me to dealing with a screen that gets dimmer and dimmer after each sleep/wake-up cycle, which eventually leads me to reboot. Since I have seen some KMS and brightness related bugs around, I was wondering if it is a definite cause for my problem. If so, has there been any advance on the excessive polling issue for those of us plagued by it?

    Read the article

  • Why Does My iMac Keep Setting the Screen Brightness to 'Full'?

    - by TomB
    I have a 2 week old 24" iMac running Mac OS X 10.6. It is the primary monitor with the menu bar on the top of display. I have an external monitor as well, a 19" Viewsonic LCD. The LCD is set to the left side of the iMac, rotated 90 degrees CCW and has the Dock along the far left edge. When I restart the screen brightness on the iMac reverts to Full brightness. The Viewsonic LCD retains the setting I have for it. I am using a Mini DVI to DVI cable for the external display. I even tried setting my Huey Pro to do automatic screen adjustment based on ambient lighting but the iMac still goes to stun with a reboot. I am sure it is something dumb I have overlooked.

    Read the article

  • Change the contrast of Image like Adobe Photoshop in ASP.net C#

    - by Hoque
    While I was trying to change the brightness and contrast of Image using C#, but I could not get success in changing the contrast of the Image. May I expect any support from here. I am using ColorMatrix to do that. Here are the code that I am using for brightness(works fine) and contrast(does not work properly). public static ColorMatrix CreateBrightnessMatrix(float Brightness) { if (Brightness < -1 || Brightness > 1) throw new ArgumentOutOfRangeException("Brightness value is out of range"); ColorMatrix cm = new ColorMatrix(new float[][]{ new float[] { 1f, 0, 0, 0, 0}, new float[] { 0, 1f, 0, 0, 0}, new float[] { 0, 0, 1f, 0, 0}, new float[] { 0, 0, 0, 1f, 0}, new float[] {Brightness, Brightness, Brightness, 1f, 1f}}); return cm; } public static ColorMatrix CreateContrastMatrix(float Contrast) { if (Contrast < 0 || Contrast > 3) throw new ArgumentOutOfRangeException("Contrast value is out of range"); float Trans = (1f - Contrast) / 2f; ColorMatrix cm = new ColorMatrix(new float[][]{ new float[] {Contrast, 0f, 0f, 0f, 0f}, new float[] { 0f, Contrast, 0f, 0f, 0f}, new float[] { 0f, 0f, Contrast, 0f, 0f}, new float[] { 0f, 0f, 0f, 1f, 0f}, new float[] { Trans, Trans, Trans, 0f, 1f}}); return cm; } Thanks.

    Read the article

  • Can someone explain this color wheel code to me?

    - by user1869438
    I just started doing java and i need some help with understanding this code. I got it from a this website. This is supposed to be code for a color wheel but i don't really understand how it works, especially the final ints STEPS and SLICES. import java.awt.Color; import objectdraw.*; public class ColorWheel extends WindowController { private double brightness; private Text text; private FilledRect swatch; private Location center; private int size; private FilledRect brightnessOverlay; private static final int SLICES = 96; private static final int STEPS = 16; public void begin() { canvas.setBackground(Color.BLACK); brightness = 1.; size = Math.min(canvas.getWidth(), canvas.getHeight() - 20); center = new Location(canvas.getWidth() / 2, size / 2); for(int j = STEPS; j >= 1; j--) { int arcSize = size * j / STEPS; int x = center.getX() - arcSize / 2; int y = center.getY() - arcSize / 2; for(int i = 0; i < SLICES; i++) { Color c = Color.getHSBColor((float)i / SLICES, (float)j / STEPS, (float)brightness); new FilledArc(x, y, arcSize, arcSize, i * 360. / SLICES, 360. / SLICES + .5, c, canvas); } } swatch = new FilledRect(0, canvas.getHeight() - 20, canvas.getWidth(), 20, Color.BLACK, canvas); brightnessOverlay = new FilledRect(0, 0, canvas.getWidth(), canvas.getHeight() - 20, new Color(0, 0, 0, 0), canvas); text = new Text("", canvas.getWidth() / 2, canvas.getHeight() - 18, canvas); text.setAlignment(Text.CENTER, Text.TOP); text.setBold(true); } public void onMouseDrag(Location point) { brightness = (canvas.getHeight() - point.getY()) / (double)(canvas.getHeight()); if(brightness < 0) { brightness = 0; } else if(brightness > 1) { brightness = 1; } if(brightness < .5) { text.setColor(Color.WHITE); } else { text.setColor(Color.BLACK); } brightnessOverlay.setColor(new Color(0f, 0f, 0f, (float)(1 - brightness))); } public void onMouseMove(Location point) { double saturation = 2 * center.distanceTo(point) / size; if(saturation > 1) { text.setText(""); swatch.setColor(Color.BLACK); return; } double hue = -Math.atan2(point.getY() - center.getY(), point.getX() - center.getX()) / (2 * Math.PI); if(hue < 0) { hue += 1; } swatch.setColor(Color.getHSBColor((float)hue, (float)saturation, (float)brightness)); text.setText("Color.getHSBColor(" + Text.formatDecimal(hue, 2) + "f, " + Text.formatDecimal(saturation, 2) + "f, " + Text.formatDecimal(brightness, 2) + "f)"); } }

    Read the article

  • Why do messenger keeps coming up when I adjust screen brightness?

    - by Asaf R
    My Dell Studio XPS 13 has a brightness up & down buttons (Fn + up arrow / down arrow), as do most laptops have. It's running Windows 7 64bit and I've installed Windows Live Messenger (build 14 and something) on it. When I hit Fn + down arrow, to reduce screen brightness, the Messenger window pops up. That's true whether it has been running in background (system tray / minimized) before or not. Note, to make messenger hide itself to the system tray, I've set it to Vista Compatibility mode. I don't think that has anything to do with it though, since if I shut compatibility mode off, the problem persists. There's a thread on the matter here, but with no solution. Thanks, Asaf SOLUTION: Stop Intellitype when using internal keyboard. See detailed howto here. EDIT: Some new findings on the matter - If I exit messenger entirely and restart (or simply stop) the service "Windows Live ID Sign-in Assistant" the problem is solved until I run messenger again. It persists even after entirely closing messenger, until I restart the said service. EDIT2: The above service "Windows Live ID Sign-in Assistant" actual name is wlidsvc. There's no shortcut defined for messenger, nor is there any other hot key in its preferences. EDIT3: I'm not sure if it's relates, but some of the Fn keys are not working - Fn + F1 doesn't put the machine to sleep, Fn + F3 doesn't show battery status. EDIT4: Problem probably relates to conflict with IntelliType Pro. See my answer below. Said conflict also causes Undo command when disabling Wireless (Wireless touch button), and other side effects for various keys.

    Read the article

  • Should business objects be able to create their own DTOs?

    - by Sam
    Suppose I have the following class: class Camera { public Camera( double exposure, double brightness, double contrast, RegionOfInterest regionOfInterest) { this.exposure = exposure; this.brightness = brightness; this.contrast = contrast; this.regionOfInterest = regionOfInterest; } public void ConfigureAcquisitionFifo(IAcquisitionFifo acquisitionFifo) { // do stuff to the acquisition FIFO } readonly double exposure; readonly double brightness; readonly double contrast; readonly RegionOfInterest regionOfInterest; } ... and a DTO to transport the camera info across a service boundary (WCF), say, for viewing in a WinForms/WPF/Web app: using System.Runtime.Serialization; [DataContract] public class CameraData { [DataMember] public double Exposure { get; set; } [DataMember] public double Brightness { get; set; } [DataMember] public double Contrast { get; set; } [DataMember] public RegionOfInterestData RegionOfInterest { get; set; } } Now I can add a method to Camera to expose its data: class Camera { // blah blah public CameraData ToData() { var regionOfInterestData = regionOfInterest.ToData(); return new CameraData() { Exposure = exposure, Brightness = brightness, Contrast = contrast, RegionOfInterestData = regionOfInterestData }; } } or, I can create a method that requires a special IReporter to be passed in for the Camera to expose its data to. This removes the dependency on the Contracts layer (Camera no longer has to know about CameraData): class Camera { // beep beep I'm a jeep public void ExposeToReporter(IReporter reporter) { reporter.GetCameraInfo(exposure, brightness, contrast, regionOfInterest); } } So which should I do? I prefer the second, but it requires the IReporter to have a CameraData field (which gets changed by GetCameraInfo()), which feels weird. Also, if there is any even better solution, please share with me! I'm still an object-oriented newb.

    Read the article

  • How to run python script at login screen?

    - by virpara
    I use a python script to set brightness to zero. #!/usr/bin/python import dbus bus = dbus.SessionBus() proxy = bus.get_object('org.gnome.SettingsDaemon', '/org/gnome/SettingsDaemon/Power') iface = dbus.Interface(proxy,dbus_interface='org.gnome.SettingsDaemon.Power.Screen') iface.SetPercentage(0) I've put it in Startup Applications. It works only when I login. There is full brightness at login screen. Where should I put this so that it sets brightness to zero at login screen?

    Read the article

  • Eyes easily get dry and itchy [closed]

    - by Lo Wai Lun
    I have currently working as a programmer for half a year Very often, I often looking the monitors with natural contrast and brightness. Still when the weather is getting cold, my eyes feel dry and itchy. Sometimes I can see some red 'tree-roots' (capillaries) near iris. At home, i sometimes use my notebook for 13" or Galaxy Nexus Brightness are also natural contrast and brightness , a bit dim How should we take care of our eyes under this scenario?

    Read the article

  • how to set power plan / power profile for battery

    - by user86274
    How can i setup different power profile settings? For example i want to set low screen brightness when i am on battery power and full brightness when i am not. From "power settings" i can setup brightness but it is persistent no matter what power i use. Is there any software that i can use to prolong my battery power when i use ubuntu? I can use my laptop at least 1 more hour when i am using windows....

    Read the article

facebook twitter digg google delicious technorati stumbleupon myspace wordpress linkedin gmail igoogle windows live tumblr viadeo yahoo buzz yahoo mail yahoo bookmarks favorites email print

< Previous Page | 3 4 5 6 7 8 9 10 11 12 13 14  | Next Page >