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  • naming a screen session in linux

    - by Aly
    Hi, I am running multiple screens from one ssh connection, when I list all of the screens via screen -ls the names are not very descriptive and when I have multiple screens it becomes hard to remember what is running on each. Does anyone know how to name these sessions (preferably when creating the screen). Thanks

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  • How to surpress screen savers on Linux?

    - by Die in Sente
    I need to prevent the screen saver from running while my application is running. I know how to do this on the Windows versions, with SendInput calls, but I need to do something similar for Linux ports. It looks complicated, because ideally, I'd like something that would work on multiple Linux distros (SuSe, Red Hat, Ubunutu...) and it looks like there are at least 3 different screen-saver frameworks: xscreensaver, gnome-screensaver, and something else in KDE.

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  • Detection screen disconnection in linux

    - by Dark Templer
    Hey Guys We have a nasty little problem. In short we can detect if a screen is connect when x11 boots (we do this by looking at the log - Xorg.0.log), but we are having trouble detect when are screen is disconnected while the machine is running (ie post x11 boot) Any one have any ideas? Cheers

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  • I am trying to use gnu screen on mac

    - by dorelal
    I have ~/.bash_profile which I would like to be invoked every single time a new GNU screen is created so that all my aliases work in GNU screen as they work in terminal. At this time this is what my ~/.screenrc looks like. hardstatus on hardstatus alwayslastline hardstatus string "%{.bW}%-w%{.rW}%n %t%{-}%+w %=%{..G} %H %{..Y} %m/%d %C%a "

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  • Ubuntu 12.10 boots to purple or black screen but intermittently boots fine

    - by Nic
    I have a fresh install of Ubuntu 12.10 64bit dual booting with Win7 64bit. Windows boots fine every time. When I choose Ubuntu from Grub2 menu it will sometimes boot just fine. Most of the times though it gets stuck at a purple screen with nothing happening and no keys or key combinations working. Other times instead of the purple screen I get a black screen with a flashing cursor at the top. Nothing happens. I need to hold down the power button to restart and after a couple times of trying it will eventually boot into Ubuntu. Once that happens everything runs without any problems. I have tried different approaches to fix the problem but to no avail. I tried removing "quiet splash", used no splash, and nomodeset What I got from this was seeing all the text of the boot process but more often than not the process gets stuck right after recognizing all the USB ports and devices. If it gets stuck nothing happens (except when i plug in a usb device: it still recognizes it with a new line of text) In the case when the boot process works, after it lists the usb devices it tells me something like: recovery of read-only filesystem necessary. (its the filesystem that ubuntu runs on) then it does the recovery and i get: recovery complete. after that Ubuntu will boot properly and I get to see the login screen. I have no idea what to do to fix that problem. I have to reboot 3 to 5 times everytime I want to get into Ubuntu and I feel like I'm breaking my new Laptop. (its a lenovo ideapad z580 btw. i5 processor and nvidia gtx640 graphics card) I hope someone can help me. Thanks. Edit: i just got a "failed to enable AA error" message when waking it up from suspend. I don't know if that helps or has anything to do with the boot probs.

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  • LWJGL Determining whether or not a polygon is on-screen.

    - by Brandon oubiub
    Not sure whether this is an LWJGL or math question. I want to check whether a shape is on-screen, so that I don't have to render it if it isn't. First of all, is there any simple way to do this that I am overlooking? Like some method or something that I haven't found? I'm going to assume there isn't. I tried using my trigonometry skills, but it is hard to do this because of how glRotate also distorts the image a little for perspective and realism. Or, is there any way to easily determine if a ray starting from the camera, and going outward in a straight line intersects a shape? (I can probably do it with my math skillz, but is there an easier way?) By the way, I can easily determine the angle at which the camera is facing around the x and y axis. EDIT: Or, possibly, I could get the angles of a vector from the camera to the object, and compare those angles to my camera angles. But I have a feeling that the distorts from glRotate and glTranslate would be an issue. I'll try it though.

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  • How do I set my main monitor to a higher resolution?

    - by Sean
    My laptop monitor's native resolution is 1280x800 and it just isnt big enough for me. I tried to set the resolution higher, but my graphics card only showed options upto 1280x800, and I figured that was the max res my card would allow. I found a monitor out on the street a few days ago and its native resolution is 1024x768. I have been playing around with it a bit. I was looking under the resolutions for it, and I can set it upto 1400x1050, so apparently my card allows for more than 1280x800, so why can't I set my laptop monitor to higher?

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  • Blank screen during boot after clean Ubuntu 11.10 install (Intel N10 graphics)

    - by Coen
    After a clean install of Ubuntu 11.10 on my Asus eee PC 1005p, Ubuntu seems to boot correctly, except for initialization of the LCD screen. What I observe: I choose Ubuntu 11.10 in the GRUB 2 menu A blank screen with a blinking cursor in the top left of the screen, for 15-20 seconds. The ubuntu logo with 5 red dots in the center of the screen, for 1 second. The LCD screen is entirely blank The startup sound plays (Ubuntu is configured to auto-login) Still, the LCD screen is entirely blank. When I press Fn-F8 (the switch between LCD screen and external VGA), the LCD screen shows my desktop correctly and everything seems to work fine. Except for the adjust contrast buttons (Fn-F5 and Fn-F6), these seem to cycle through random brightness modes. Something like: 0% - 50% - 20% - 0% - 20% - 0% Any ideas what's causing this or how to solve this? coen@elpicu:~$ lspci -v 00:02.0 VGA compatible controller: Intel Corporation N10 Family Integrated Graphics Controller (prog-if 00 [VGA controller]) Subsystem: ASUSTeK Computer Inc. Device 83ac Flags: bus master, fast devsel, latency 0, IRQ 44 Memory at f7e00000 (32-bit, non-prefetchable) [size=512K] I/O ports at dc00 [size=8] Memory at d0000000 (32-bit, prefetchable) [size=256M] Memory at f7d00000 (32-bit, non-prefetchable) [size=1M] Expansion ROM at <unassigned> [disabled] Capabilities: <access denied> Kernel driver in use: i915 Kernel modules: i915 00:02.1 Display controller: Intel Corporation N10 Family Integrated Graphics Controller Subsystem: ASUSTeK Computer Inc. Device 83ac Flags: bus master, fast devsel, latency 0 Memory at f7e80000 (32-bit, non-prefetchable) [size=512K] Capabilities: <access denied>

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  • Is there a way to get a 10000x10000 virtual resolution desktop?

    - by pingo
    I have a java applet map viewer and I'd like to plot out the map it displays. To do that I need to open it in a high enough resolution to avoid too much stitching. Is there any possible way I could get a desktop with such high resolution? So far I've been able to use panning 2560x1920 by booting windows 7 in VmWare Player. Would it be possible to get it higher? Maybe this would be doable on Linux? The whole thing can be laggy as hell as long as it will render my screenshot...

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  • Android: Determine when an app is being finalized vs destroyed for screen orientation change

    - by Matt
    Hi all, I am relatively new to the Android world and am having some difficultly understanding how the whole screen orientation cycle works. I understand that when the orientation changes from portrait to landscape or vice versa the activity is destroyed and then re-created. Thus all the code in the onCreate function will run again. So here's my situation: I have an app that I am working on where it logs into a website, retrieves data, and displays it to the user. While this is all done in background threads, the code that starts these threads is in the onCreate function. Now, the problem lies in that whenever the user changes the screen orientation, the app will log in, retrieve the data, and display it to the user again. What I would like to do is set a boolean that tells the app if it is logged in or not so it knows whether or not it must log in when the onCreate function is called. So long as the app is in memory the HttpClient will exist and contain the cookies from logging the user in but when the app is killed by the system those will go away. So I would assume that I need to do something like setting the logged in boolean to false when the app is killed but since onDestroy is called when the screen is rotated how is this possible? I also looked into the finalize function and isFinishing() but those seem to not be working. Shorter version: How can I distinguish between when an app is being killed from memory from when an activity is being rotated and different code for each event? Any help or a point in the right direction is greatly appreciated. Thank you!

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  • wrap from last screen to first screen in android Launcher2

    - by poboy975
    hi, I'm learning java and android. and I've been looking at trying to wrap the last screen to the first screen in the android Launcher2. I've tried googleing, and searching here, but there really isnt much information about the launcher2 source...I've been modifying the workspace.java file, but there has been minimal effect. no wrap around so far...I have not been able to find a .xml file that also might control the hard stop when you reach the end of the screens. I'll give a small example of the code that i have been modifying. original code: public void scrollRight() { clearVacantCache(); if (mNextScreen == INVALID_SCREEN && mCurrentScreen < getChildCount() -1 && mScroller.isFinished()) { snapToScreen(mCurrentScreen + 1); } modified code: public void scrollRight() { clearVacantCache(); if (mNextScreen == INVALID_SCREEN && mCurrentScreen < getChildCount() -1 && mScroller.isFinished()) { snapToScreen(mCurrentScreen + 1); }if (mCurrentScreen == getChildCount() -1 && mScroller.isFinished()) { snapToScreen(0); I would appreciate any tips or pointers if anyone has an idea where i'm going wrong, or someplace i can search to get the answers. the code looks to me like it should work, but I'm probably missing something obvious.

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  • Disabling assistive technologies during login

    - by Ivan
    I have a laptop with Ubuntu 10.04. My daughter was playing with the keyboard on the login screen, and it seems she activated some assistive technologies because now the screen is split vertically and the right side shows a magnified version of the left side. Plus, there's a screen keyboard. The way the screen is split makes it impossible for me to disable the assistive stuff from the toolbar at the bottom, since I can only see part of it. I don't know if it's a bug or what, because I'd guess I could see the entire bar on the right (magnified) side just by moving the mouse there, but I can't. I can't even type on the login screen, nor use the on-screen keyboard... Good thing I have auto-login activated, so I can still use the computer, but I can't switch users. So, does anyone know how to get the normal login screen back?

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  • Black screen after installing ubuntu 11.10 on new pc

    - by wouter205
    Could anyone troubleshoot me please; After installing ubuntu on my fresh desktop, the ubuntu loading screen shortly appears and then I get a black screen and cannot access the login screen. When booting in failsafe modus, i get a message that ubuntu failed to load failsafe video drivers. I have a radeon 6850 video card and am able to start ubuntu live session. So I guess it loads the wrong drivers upon booting from hd. I remember a file in which you could change which drivers it should load, but forgot the exact location. Could this solve my problem (or another solution)

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  • Xubuntu 14.04 black screen after monitor off/on

    - by Sampo Smolander
    I have a HP desktop machine with Ubuntu 14.04, with also Xubuntu and Gnome desktops installed. I mostly use the Xubuntu session. When using the Xubuntu session, when I power off my monitor, and power it back on, the screen stays black and I cannot do any work. With ctrl-alt-f6 I can open another virtual terminal, and then the screen works again, but if I to go back to the desktop session with ctrl-alt-f7, all I have is a black screen. But, if I login to Unity (the Ubuntu default session), or to Gnome, and turn the monitor off and back on, everything works ok. Also, if I log out, and while in the lightdm greeter, turn the monitor off and back on, everything works ok. What could be the cause for this, and how to fix this?

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  • Black screen after upgrading from 13.04 to 13.10

    - by Harri
    Just upgraded from 13.04 to 13.10 and all I got was a black screen. The hardware I'm running is Asus Zenbook UX31A (Intel GPU). I do hear that the login screen drums do play, so the system does boot to login screen. When I try to boot using kernel 3.11.0-12 recovery mode, it tells me "initctl: event failed". Then if I go on an press ctrl+alt+f2, log in and command startx, it dies because "Fatal server error: no screens found". Here are some logs from /var/log/Xorg.0.log http://pastebin.com/ZQasUKJx Kernel 3.8.0-31 work ok, as did things before the upgrade.

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  • Ubuntu boots to black screen after failed upgrade from 12.04 to 12.10

    - by ywx
    This happened when I tried to upgrade from 12.04 to 12.10. I don't know whether the upgrade process had completed downloading and installing packages or whether it was still in progress, but I got a message The application Compiz has closed unexpectedly. At that point, my mouse stopped working so I switched to tty1 by Ctrl+Alt+F1 and rebooted from there. I then found that I could not boot into Ubuntu any more. My screen stayed first purple then black. I went back to tty1 and it said I was running 12.10. I tried some suggestions in this thread on Ubuntuforums: Wubi blank purple screen than blank black screen and this one: How to set NOMODESET and other kernel boot options in grub2 but nothing seemed to work. I can boot Windows as normal. I am using Wubi on Windows7. My laptop is a Lenovo T410i with NVIDA NVS 3100m

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  • Using glReadBuffer returns black image instead of the actual image only on Intel cards

    - by cloudraven
    I have this piece of code glReadBuffer( GL_FRONT ); glReadPixels( 0, 0, width, height, GL_RGB, GL_UNSIGNED_BYTE, buffer ); Which works just perfectly in all the Nvidia and AMD GPUs I have tried, but it fails in almost every single Intel built-in video that I have tried. It actually works in a very old 945GME, but fails in all the others. Instead of getting a screenshot I am actually getting a black screen. If it helps, I am working with the Doom3 Engine, and that code is derived from the built-in screen capture code. By the way, even with the original game I cannot do screen capture on those intel devices anyway. My guess is that they are not implementing the standard correctly or something. Is there a workaround for this?

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  • Using glReadBuffer/glReadPixels returns black image instead of the actual image only on Intel cards

    - by cloudraven
    I have this piece of code glReadBuffer( GL_FRONT ); glReadPixels( 0, 0, width, height, GL_RGB, GL_UNSIGNED_BYTE, buffer ); Which works just perfectly in all the Nvidia and AMD GPUs I have tried, but it fails in almost every single Intel built-in video that I have tried. It actually works in a very old 945GME, but fails in all the others. Instead of getting a screenshot I am actually getting a black screen. If it helps, I am working with the Doom3 Engine, and that code is derived from the built-in screen capture code. By the way, even with the original game I cannot do screen capture on those intel devices anyway. My guess is that they are not implementing the standard correctly or something. Is there a workaround for this?

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  • Black screen in kernel 3.8 (not 3.5, 3.11, 3.13)

    - by TheDeeno
    I need to use kernel 3.8 to address some docker compatibility issues. However, after installing this kernel when I attempt to boot my machine I get a black screen. The system appears to boot to the login screen (I hear the drum sounds), but the screen remains black. If I boot into recovery mode the video works, but is buggy/slow. In recover mode it looks like it's using the vesa driver. It'd be great if I can force this in normal mode. My machine has an ivy bridge intel processor with integrated graphics What should I do next to troubleshoot this?

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  • How can I start new window in the same screen session automatically?

    - by Mato
    I read How can I start multiple screen sessions automatically?, but I don't understand the first accepted reply: screen -dmS "$SESSION_NAME" "$COMMAND" "$ARGUMENTS" In my case I need to automatically create one screen session for one script, and afterwards I need to create a new window in the same session for another script. Manually, I would: run screen enter command CTRL+A CTRL+C enter command CTRL+A CTRL+D How can I do this automatically in a script? A simple example would help me a lot. Thank you for replies.

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  • Setting the origin to center of the screen instead of the top left screen?(iPhone)

    - by thyrgle
    Hi, I am working on an iPhone app and I am trying to make something that has to do with line-circle collision detection. I am using the slope of the line and checking if the coordinates of a circle suffice the equation y = mx + b. But, with the current origin (0,0) at the top left it is a pain to get the slope. Any way I can convert the coordinates so the origin is in the center of the screen?

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