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  • bumblebee does not work with metacity and KWin, but works with compiz

    - by cpu2
    If I try to launch something with optirun under compiz, it works. If I try to launch something with optirun under KDE or metacity, it gives me: [ 247.384077] [ERROR]Cannot access secondary GPU - error: [XORG] (EE) [ 247.384117] [ERROR]Aborting because fallback start is disabled. If it matters, I'm trying to launch Portal 2 with wine I have: Nvidia GeForce GT540M with optimus Acer Aspire Timeline X Intel core i5 and 3000 Integrated Graphics

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  • Live CD has black screen HP DV6

    - by Shaun Killingbeck
    Attempting to install/try ubuntu (11.10, 12.04) on my new laptop, using a liveCD (and tried USB). I get the purple screen (with the man/keyboard at the bottom) and after that the screen flashes bright white before going black. Ubuntu continues to load in the background, with login sound etc but the screen is off. I have tried as many different solutions as I could find including: using nomodestep, xforcevesa, i915.modeset=0, and also now i915.modeset=1 in boot options (seperately): varying consequences, but either I end up at a blinking cursor with no prompt, a command line (startx fails: no screen found), or the original blank screen again Tried booting from VirtualBox - it crashes at the same place the screen would go blank when using a CD/USB tried 11.04: I don't have this problem BUT when trying to install, I get a ubi-partman error 141 (possibly down to the three partitions that came on my laptop... not sure why HP needed there own separate partition for HP Tools...) Model: HP Pavillion DV6 6B08SA Processor: AMD Quad-Core A6-3410MX APU with Radeon HD 6545G2 Dual Graphics (1.6 GHZ 4 MB L2 cache ) Chipset: AMD RS880M Any help would be greatly appreciated. I just want to be able to partition the drive and install Ubuntu. I'm assuming the issue is graphics card related, although I have no confirmation of that. Update: Tried the ?orkarounds on https://wiki.ubuntu.com/X/Troubleshooting/BlankScreen - set gfxpayload=text changed nothing, removing splash did nothing and setting vesafb.nonsense=1 did nothing either. I'd like to be able to collect some log information somehow, but I can't get to a command line from the liveCD. tried using the latest 12.04 beta, same issue tried nomodeset without splash or quiet. get the following (tail of) output before it freezes on that screen: * Starting configure network device security [OK] * Starting configure network device [OK] [ 25.720899] ieee80211 phy0: w1_ops_config: change monitor mode: false (implement) [ 25.720923] ieee80211 phy0: w1_ops_config: change power-save mode: false (implement) * Starting restore sound card(s') mixer state(s) [fail] [ 25.721849] ieee80211 phy0: w1_ops_bss_info_changed: qos enabled: false (implement) * Stopping save kernel messages [OK] * Starting bluetooth [OK] * PulseAudio configured for per-user sessions saned disabled; edit /etc/default/saned [ 25.988016] hci_cmd_timer: hci0 command tx timeout [ 26.207225] bad LUN (0:1) [ 26.223735] bad target number (1:0) [ 26.252111] bad target number (2:0) [ 26.272170] bad target number (3:0) [ 26.300154] bad target number (4:0) [ 26.328162] bad target number (5:0) [ 26.344180] bad target number (6:0) [ 26.368142] bad target number (7:0) * Checking battery state... [OK] * Stopping System V runlevel capability [OK] Does this give any indication of the problem? the false (implement) messages also reappear when I press the power button to ask it to shutdown, followed by a [fail] status for killing remaining processes.

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  • Lubuntu wireless issue with Broadcom chipset

    - by Variant Web Solutions
    I'm a web dev that just started a new venture in buying wiped laptops in bulk and selling them at a low cost to lower income families that want a laptop that will simply preform and not become virus ridden and require constant maintenance, so naturally I opted for a linux distro and after some research, lubuntu was my top pick. I'm not a stranger to linux as all of my servers for my web dev business are linux, but I am however new to L/Ubuntu and I'm having some issues with both wifi (broadcom chipsets) on the 20 or so dells that I have right now, D800's, D810's and E5400's. Not sure if you can point me in a solid direction, I've scoured (and implemented) the suggestions on ask ubuntu and still coming up short. On one of the e5400's ( though they all seem to suffer the same errors) I got the following: [code]dell-latitude-e5400@dell-Latitude-E5400:~$ iwconfig lo no wireless extensions. eth0 no wireless extensions. dell-latitude-e5400@dell-Latitude-E5400:~$ lspci 00:00.0 Host bridge: Intel Corporation Mobile 4 Series Chipset Memory Controller Hub (rev 07) 00:02.0 VGA compatible controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07) 00:02.1 Display controller: Intel Corporation Mobile 4 Series Chipset Integrated Graphics Controller (rev 07) 00:1a.0 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #4 (rev 02) 00:1a.1 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #5 (rev 02) 00:1a.2 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #6 (rev 02) 00:1a.7 USB controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #2 (rev 02) 00:1b.0 Audio device: Intel Corporation 82801I (ICH9 Family) HD Audio Controller (rev 02) 00:1c.0 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 1 (rev 02) 00:1c.1 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 2 (rev 02) 00:1c.4 PCI bridge: Intel Corporation 82801I (ICH9 Family) PCI Express Port 5 (rev 02) 00:1d.0 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #1 (rev 02) 00:1d.1 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #2 (rev 02) 00:1d.2 USB controller: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #3 (rev 02) 00:1d.7 USB controller: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #1 (rev 02) 00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev 92) 00:1f.0 ISA bridge: Intel Corporation ICH9M LPC Interface Controller (rev 02) 00:1f.2 IDE interface: Intel Corporation 82801IBM/IEM (ICH9M/ICH9M-E) 2 port SATA Controller [IDE mode] (rev 02) 00:1f.3 SMBus: Intel Corporation 82801I (ICH9 Family) SMBus Controller (rev 02) 00:1f.5 IDE interface: Intel Corporation 82801IBM/IEM (ICH9M/ICH9M-E) 2 port SATA Controller [IDE mode] (rev 02) 02:01.0 CardBus bridge: Ricoh Co Ltd RL5c476 II (rev ba) 02:01.1 FireWire (IEEE 1394): Ricoh Co Ltd R5C832 IEEE 1394 Controller (rev 04) 02:01.2 SD Host controller: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host Adapter (rev 21) 09:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5761e Gigabit Ethernet PCIe (rev 10) dell-latitude-e5400@dell-Latitude-E5400:~$ rfkill Usage: rfkill [options] command Options: --version show version (0.5-1ubuntu1 (Ubuntu)) Commands: help event list [IDENTIFIER] block IDENTIFIER unblock IDENTIFIER where IDENTIFIER is the index no. of an rfkill switch or one of: all wifi wlan bluetooth uwb ultrawideband wimax wwan gps fm nfc dell-latitude-e5400@dell-Latitude-E5400:~$ [/code]

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  • Bejeweled Twist clone for Gnu/linux

    - by Andrew
    What is The best Bejeweled Twist clone for Gnu/linux. I know about like Kdiamond and Geweled, but those games are don't have sound or good graphics. I know One good Bejeweled Clone for Gnu/Linux Hotei Jewels Relax but that wasn't a Bejeweled Twist clone. F.I.Y I only run thing natively in Gnu/Linux And I don't use Compatibility layers or emulations over they are buggy and they don't use the Gnu/linux file hierarchy. Thank you.

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  • Debugging HLSL for Windows 8 application [migrated]

    - by Shervanator
    i'm currently in the process of creating a Windows 8 applicaiton using SharpDX (the managed c# directx wrapper). However I have ran into problems with one of my shaders and I want to know if its possible to debug such applications. PIX doesn't seem to work of directX apps as the executable does not like opening directly, and the new visual studio graphics debugging toolkit in VS2012 always states "unable to start the experiment" when I try to capture any information about my session. Thanks!

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  • Another question about handling game states

    - by Eva
    I'm making a game designed with the entity-component paradigm that uses systems to communicate between components as explained here. I've reached the point in my development that I need to add game states (such as paused, playing, level start, round start, game over, etc.), but I'm not sure how to do it with my framework. I've looked at this code example on game states which everyone seems to reference, but I don't think it fits with my framework. It seems to have each state handling its own drawing and updating. My framework has a SystemManager that handles all the updating using systems. For example, here's my RenderingSystem class: public class RenderingSystem extends GameSystem { private GameView gameView_; /** * Constructor * Creates a new RenderingSystem. * @param gameManager The game manager. Used to get the game components. */ public RenderingSystem(GameManager gameManager) { super(gameManager); } /** * Method: registerGameView * Registers gameView into the RenderingSystem. * @param gameView The game view registered. */ public void registerGameView(GameView gameView) { gameView_ = gameView; } /** * Method: triggerRender * Adds a repaint call to the event queue for the dirty rectangle. */ public void triggerRender() { Rectangle dirtyRect = new Rectangle(); for (GameObject object : getRenderableObjects()) { GraphicsComponent graphicsComponent = object.getComponent(GraphicsComponent.class); dirtyRect.add(graphicsComponent.getDirtyRect()); } gameView_.repaint(dirtyRect); } /** * Method: renderGameView * Renders the game objects onto the game view. * @param g The graphics object that draws the game objects. */ public void renderGameView(Graphics g) { for (GameObject object : getRenderableObjects()) { GraphicsComponent graphicsComponent = object.getComponent(GraphicsComponent.class); if (!graphicsComponent.isVisible()) continue; GraphicsComponent.Shape shape = graphicsComponent.getShape(); BoundsComponent boundsComponent = object.getComponent(BoundsComponent.class); Rectangle bounds = boundsComponent.getBounds(); g.setColor(graphicsComponent.getColor()); if (shape == GraphicsComponent.Shape.RECTANGULAR) { g.fill3DRect(bounds.x, bounds.y, bounds.width, bounds.height, true); } else if (shape == GraphicsComponent.Shape.CIRCULAR) { g.fillOval(bounds.x, bounds.y, bounds.width, bounds.height); } } } /** * Method: getRenderableObjects * @return The renderable game objects. */ private HashSet<GameObject> getRenderableObjects() { return gameManager.getGameObjectManager().getRelevantObjects( getClass()); } } Also all the updating in my game is event-driven. I don't have a loop like theirs that simply updates everything at the same time. I like my framework because it makes it easy to add new GameObjects, but doesn't have the problems some component-based designs encounter when communicating between components. I would hate to chuck it just to get pause to work. Is there a way I can add game states to my game without removing the entity-component design? Does the game state example actually fit my framework, and I'm just missing something?

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  • The Alienware M11xR3 has arrived

    - by Enrique Lima
    A week or so ago, I mentioned my gear was evolving.  The newest member of my gear arrived yesterday, an Alienware M11xR3. Here are the specs: Intel Core i7-2617M 1.5GHz (2.6GHz Turbo Mode, 4MB Cache) NVIDIA GeForce GT540 graphics with 2.0GB Video Memory and Optimus 16GB Dual Channel DDR3 at 1333MHz 11.6in High Def (720p/1366x768) with WLED backlight 750GB 7200RPM SATA 3Gb/s Soundblaster X-Fi Hi Def Audio - Software Enabled Intel Advanced-N WiFi Link 6250 a/g/n 2x2 MIMO Technology with WiMax Gobi Mobile Broadband with GPS - supports ATT with contract Internal Bluetooth 3.0   Some pics from the unboxing event:

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  • Good GUI for OpenGL

    - by Cristina
    I am starting to learn OpenGL with FreeGLUT using the Superbible and the knowledge i have from my elementary graphics to brush up on my skills. To get more from this experience i want to integrate a GUI to overwrite the one FreeGLUT uses, now my question is this: is this thing possible and what library should i use? Some characteristics for the library: Open source Multi-platform (Linux and Windows) C/C++ If you have any other recommendations please feel free to post them along with your answers for my problem.

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  • Facebook video is too choppy to watch.

    - by Greg Pauline
    Using firefox and chrome on an Acer Aspire 5100 with an AMD Turion 64 MK36 processor with 2GB of RAM and an ATI Radeon Xpress 110 Graphics card. I had a problem viewing Vimeo and youtube that has now been resolved with the help of this website. But now I find that trying to watch Facebook videos from family and friends is impossible due to the terrible choppy frame rate and near freezing of the browser window. Any idea what is going on and how to fix it?

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  • Why does my int, booleans, doubles does not work?

    - by SystemNetworks
    As you see, my code does not work. When armor1 is true, it would add my life. goldA is another class. public void goldenArmor(GameContainer gc, StateBasedGame sbg, Graphics g) { if(armor1==true) { goldA.life = life; goldA.intelligence = intelligence; goldA.power = power; goldA.lifeLeft = lifeLeft; goldA.head(); goldA.body(); goldA.legs(); } } My other class: package javagame; import org.newdawn.slick.GameContainer; import org.newdawn.slick.Graphics; import org.newdawn.slick.Image; import org.newdawn.slick.Input; import org.newdawn.slick.SlickException; /* Note: Copyright(C)2012 System Networks | Square NET | Julius Bryan Gambe. You cannot copy the style, story of the game and gameplay! To programmers: The int,doubles,strings,booleans are properly sorted out. Please don't mess it up. */ /* NOTE: We have loops but not for programming. The loop is: 1.show the world to user 2.Obtain input from the user 3.Shows the update, repeat step 1 */ import org.newdawn.slick.*; import org.newdawn.slick.state.*; import org.lwjgl.input.Mouse; //contents: // public class GoldenArmor{ //get it from play public int life; public double intelligence; public int lifeLeft; public double power; public GoldenArmor() { // TODO Auto-generated constructor stub } //start here public void head() { life += 10; intelligence +=0.5; } public void body() { lifeLeft += 100; } public void legs() { power += 100; } } /* SYSTEM NETWORKS(C) 2012 NET FRONT */ The life, intelligence, power, lifeLeft are nothing but to use it as just reference to prevent stack overflow. And at my main class, it becomes my real booleans, int, doubles. How do I fix this? It does not add it to my normal int.

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  • Unity won't load with proprietary drivers

    - by Nobita
    First time running Ubuntu 11.04 and getting used to Unity, I decided to install proprietary drivers for my Nvidia graphic card. The output of lspci | grep VGA is: 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) 01:00.0 VGA compatible controller: nVidia Corporation Device 0df5 (rev a1) If I activate the driver that is "recommended", next time I try to login in a Unity session it just changes to the classic. How can that be happening? I attach the screenshoot of my proprietary driver screen:

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  • Problem with RecordMyDesktop program

    - by Saeid87
    I am trying to record some tutorials using RecordMyDesktop application. The problem is the video becomes jagged and unusable as you can see from the screenshot I have taken while playing a saved video. I don't know what can be the problem, but I guess it has something to do with my graphics driver. My laptop is using Intel HD 3000 series and I couldn't find any update for it. If you know what might be the problem and how to solve it I will really appreciate it!

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  • ATI RS690m X1200 proprietary driver installation

    - by fan-dz
    I've installed Ubuntu 11.10 on my emachine e625 AMD64 (TF-20) with an ATI RS690m X1200 graphics card but I didn't have 3D acceleration. The open-source driver works, except for any video effects or acceleration… I've downloaded the driver from ATI and followed the installation instructions and here is the result: Error: ./default_policy.sh does not support version default:v2:x86_64:lib32::none:3.0.0-17-generic; make sure that the version is being correctly set by --iscurrentdistro What did I do wrong?

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  • Ivy bridge i3 recognized as Xeon e3-1200

    - by user287072
    The situation: I've got a Ivy bridge i3 3225 which is being recognized as a Xeon e3-1200 series cpu by Ubuntu 14.04 64bit. The problem: cpu fan makes more noise than necessary (under dual-boot Win8 the fans are off), cannot install the intel graphics drivers from 01.org. Goals: - find a fix for the load fans could be they are not CPU related, I've tried some fan controller packages, but they made no difference. - get the intel graphics to install (this now fails as xeon cpu's are not supported, I got the package working on a i5 laptop) - get to know some more about how hardware recognition works Tried so far: - a reinstall of Ubuntu, but it was recognized again as a Xeon cpu. - different fan control packages, but they either do not recognized the fans, or just keep fan speed to high. Any pointers as how to get Ubuntu recognized it are more than welcome. lspci -nnQ 00:00.0 Host bridge [0600]: Intel Corporation Xeon E3-1200 v2/3rd Gen Core processor DRAM Controller [8086:0150] (rev 09) 00:01.0 PCI bridge [0604]: Intel Corporation Xeon E3-1200 v2/3rd Gen Core processor PCI Express Root Port [8086:0151] (rev 09) 00:14.0 USB controller [0c03]: Intel Corporation 7 Series/C210 Series Chipset Family USB xHCI Host Controller [8086:1e31] (rev 04) 00:16.0 Communication controller [0780]: Intel Corporation 7 Series/C210 Series Chipset Family MEI Controller #1 [8086:1e3a] (rev 04) 00:1a.0 USB controller [0c03]: Intel Corporation 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #2 [8086:1e2d] (rev 04) 00:1b.0 Audio device [0403]: Intel Corporation 7 Series/C210 Series Chipset Family High Definition Audio Controller [8086:1e20] (rev 04) 00:1c.0 PCI bridge [0604]: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 1 [8086:1e10] (rev c4) 00:1c.5 PCI bridge [0604]: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 6 [8086:1e1a] (rev c4) 00:1c.6 PCI bridge [0604]: Intel Corporation 82801 PCI Bridge [8086:244e] (rev c4) 00:1d.0 USB controller [0c03]: Intel Corporation 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #1 [8086:1e26] (rev 04) 00:1f.0 ISA bridge [0601]: Intel Corporation Z77 Express Chipset LPC Controller [8086:1e44] (rev 04) 00:1f.2 SATA controller [0106]: Intel Corporation 7 Series/C210 Series Chipset Family 6-port SATA Controller [AHCI mode] [8086:1e02] (rev 04) 00:1f.3 SMBus [0c05]: Intel Corporation 7 Series/C210 Series Chipset Family SMBus Controller [8086:1e22] (rev 04) 01:00.0 VGA compatible controller [0300]: NVIDIA Corporation GK106 [GeForce GTX 660] [10de:11c0] (rev a1) 01:00.1 Audio device [0403]: NVIDIA Corporation GK106 HDMI Audio Controller [10de:0e0b] (rev a1) 03:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 09) 04:00.0 PCI bridge [0604]: ASMedia Technology Inc. ASM1083/1085 PCIe to PCI Bridge [1b21:1080] (rev 03)

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  • Screen will not load in 11.04 alpha 3

    - by Saad Inam
    After updating from 10.10, there were no problems everything updated fine. I restarted the computer and selected Ubuntu from the boot menu but nothing came. it only shows a a black screen and it allows me to type. I have a feeling that this might be to do with the graphics driver, but how would i get a driver if nothing shows? I have ati radeon 5450 which runs with Catalyst Control Center on Windows. How can fix this?

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  • Compiz with Intel video card not working after upgrade to 11.04

    - by fazi
    After upgrade to ubuntu 11.04 from 10.10 My compiz stop working I have no cube effects and preview files and other compiz stuff. I have intel x4500 (00:02.1 Display controller: Intel Corporation 4 Series Chipset Integrated Graphics Controller (rev 03) ) glxinfo name of display: :0 display: :0 screen: 0 direct rendering: Yes server glx vendor string: Brian Paul server glx version string: 1.4 Mesa 7.11-devel I have removed compiz, gnome (witch --purge) and install again, nothing works :( Im using default ubuntu desktop (no unity) any idea how can I fix this?:

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  • Make OpenGL game perform better

    - by Csabi
    I have programmed an OpenGL game which just contains one F1 car and a track. It is very simple and only uses around of 10'000 - 20'000 triangles. It should run on any PC but it won't, it needs a really good graphics-card to run at a decent framerate. Can you write some methods or links to sites which would help me make my scene/game more efective? my game can be downloaded from here or directly from here

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  • System Settings -> Additional Drivers is empty. How then do I install proprietary drivers?

    - by learner
    I use Ubuntu 12.04. My graphics card is Geforce GT540M. I opened Synaptic Package manager and installed the following: nvidia-common nvidia-settings-update nvidia-common nvidia-current nvidia-current-updates The following were installed before(when unity launcher looked normal): jockey-common psensor nvidia-settings jockey-gtk xserver-xorg-video-nouveau My intention was to use the right Nvidia drivers. But apparently it didn't rightly install the drivers and now I have Unity 2D running!

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  • Windows Server 2008 in KVM

    - by Joseph
    I've been working on getting a Windows Server 2008 KVM in my linux box running Ubuntu Server 12.04. I've got virt-install and virt-manager installed, got the install up and running via virt-install --connect qemu:///system -n winsvr2008 -r 1024 --vcpus=1 --disk path=/home/pwnd/vm/2008.img,size=30 -c /home/pwnd/en_windows_server_2008_with_sp2_x86_dvd_342333.iso --graphics vnc,listen=192.168.1.127 --noautoconsole --os-type=windows --os-variant=win2k8 --network=bridge:virbr0 --hvm -v and virsh vncdisplay winsvr2008 I can connect and view, but upon starting, I get hung up on please wait right after clicking Install. Any ideas?

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  • Increasing Website Attraction with Graphic Designs

    As we all are aware graphic designing can be found in many areas of our life which is the combination of graphical images and texts. Usage of graphics is seen in many fields like posters, newsletters... [Author: Alan Smith - Web Design and Development - June 15, 2010]

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  • Best way to implement a simple bullet trajectory

    - by AirieFenix
    I searched and searched and although it's a fair simple question, I don't find the proper answer but general ideas (which I already have). I have a top-down game and I want to implement a gun which shoots bullets that follow a simple path (no physics nor change of trajectory, just go from A to B thing). a: vector of the position of the gun/player. b: vector of the mouse position (cross-hair). w: the vector of the bullet's trajectory. So, w=b-a. And the position of the bullet = [x=x0+speed*time*normalized w.x , y=y0+speed*time * normalized w.y]. I have the constructor: public Shot(int shipX, int shipY, int mouseX, int mouseY) { //I get mouse with Gdx.input.getX()/getY() ... this.shotTime = TimeUtils.millis(); this.posX = shipX; this.posY = shipY; //I used aVector = aVector.nor() here before but for some reason didn't work float tmp = (float) (Math.pow(mouseX-shipX, 2) + Math.pow(mouseY-shipY, 2)); tmp = (float) Math.sqrt(Math.abs(tmp)); this.vecX = (mouseX-shipX)/tmp; this.vecY = (mouseY-shipY)/tmp; } And here I update the position and draw the shot: public void drawShot(SpriteBatch batch) { this.lifeTime = TimeUtils.millis() - this.shotTime; //position = positionBefore + v*t this.posX = this.posX + this.vecX*this.lifeTime*speed*Gdx.graphics.getDeltaTime(); this.posY = this.posY + this.vecY*this.lifeTime*speed*Gdx.graphics.getDeltaTime(); ... } Now, the behavior of the bullet seems very awkward, not going exactly where my mouse is (it's like the mouse is 30px off) and with a random speed. I know I probably need to open the old algebra book from college but I'd like somebody says if I'm in the right direction (or points me to it); if it's a calculation problem, a code problem or both. Also, is it possible that Gdx.input.getX() gives me non-precise position? Because when I draw the cross-hair it also draws off the cursor position. Sorry for the long post and sorry if it's a very basic question. Thanks!

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  • Suspend and resume not working on an HP dv7

    - by Emiel
    this one is driving me nuts. My HP dv7 laptop isn't resuming from suspend and hybernate. On suspend - resume it leaves me with a black screen. On hibernate it succesfully loads the images and then it hangs.... I searched through internet and tried serveral things, but nothing seems to work for this HP dv7 on Ubuntu 12.04. With 11.10 it didn't work either. Intel® Core™ i5 CPU M 450 @ 2.40GHz × 4 VESA: Intel®Ironlake Mobile Graphics 64-bit

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  • Can a 10-bit monitor connection preserve all tones in 8-bit sRGB gradients on a wide-gamut monitor?

    - by hjb981
    This question is about color management and the use of a higher color depth, 10 bits per channel (30 bits in total, resulting in 1.07 billion colors, or 1024 shades of gray, sometimes referred to as "deep color") compared to the standard of 8 bits per channel (24 bits in total, 16.7 million colors, 256 shades of gray, sometimes referred to as "true color"). Do not confuse with "32 bit color", which usually refers to standard 8 bit color with an extra channel ("alpha channel") for transparency (used to achieve effects like semi-transparent windows etc). The following can be assumed to be in place: 1: A wide-gamut monitor that supports 10-bit input. Further, it can be assumed that the monitor has been calibrated to its native gamut and that an ICC color profile has been created. 2: A graphics card that supports 10-bit output (and is connected to the monitor via DisplayPort). 3: Drivers for the graphics card that support 10-bit output. If applications that support 10-bit output and color profiles would be used, I would expect them to display images that were saved using different color spaces correctly. For example, both an sRGB and an adobeRGB image should be displayed correctly. If an sRGB image was saved using 8 bits per channel (almost always the case), then the 10-bit signal path would ensure that no tonal gradients were lost in the conversion from the sRGB of the image to the native color space of the monitor. For example: If the image contains a pixel that is pure red in 8 bits (255,0,0), the corresponding value in 10 bits would be (1023,0,0). However, since the monitor has a larger color space than sRGB, sending the signal (1023,0,0) to the monitor would result in a red that was too saturated. Therefore, according to the ICC color profile, the signal would be transformed into a different value with less red saturation, for example (987,0,0). Since there are still plenty of levels left between 0 and 987, all 256 values (0-255) for red in the sRGB color space of the file could be uniquely mapped to color-corrected 10-bit values in the monitor's native color space. However, if the conversion was done in 8 bits, (255,0,0) would be translated to (246,0,0), and there would now only be 247 available levels for the red channel instead of 256, degrading the displayed image quality. My question is: how does this work on Ubuntu? Let's say that I use Firefox (which is color-aware and uses ICC color profiles). Would I get 10-bit processing, thus preserving all levels of an 8-bit picture? What is the situation like for other applications, especially photo applications like Shotwell, Rawtherapee, Darktable, RawStudio, Photivo etc? Does Ubuntu differ from other operating systems (Linux and others) on this point?

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