Is there a Linux command to blank the screen, making it all black, whether the screen is in text mode or in graphical mode? For instance, if the command turns off the video output from the video card, then it wouldn't matter what mode the screen is in: the result should be a black physical screen.
View 2 RepliesJust installed CentOS 5.5 in text mode because the GUI mode keeps hanging midway installation. The text mode installation worked sucessfully but when the installation finished and rebooted the system i got the localhost login thing which i typed root and provided my password,logged in successfully but then the cursor was just blinking waiting for the next command, i then typed startx but immidiatelythe screen goes blank and hangs. I guess the problem has to do with vga but i'm newbie and don't knw what next to do.
View 1 Replies View RelatedI am having the same problem, as soon as X tries to load my screen just goes blank. I have an ATI Radeon 9550. At first I tried switching between VGA and DVI as well but upon ruling that out, I switch to my on-board video card and that is working thus far, but I'm trying very hard to figure out a way to be able to switch back. Anyways I'll check back in later on if I have any new information I will post.
View 3 Replies View RelatedI'm have much computer experience but am new to Ubuntu. I typed in sudo apt-get install ubuntu-desktop and it tells me it's already installed. Good. So it should work. I type sudo/etc/init.d/gdm start and the screen goes blank for 8 seconds three times in a row and then back to the command line. I have also tried gdm start without the path before and it says GDM already running. Aborting!
View 5 Replies View RelatedWhen i use my computer (whether it's going online, typing, playing a flash game, or coding) I get these "Black Flashes" that are becoming longer and more frequent. A "Black Flash" is when my computer screen turns blank (but you can still see the backlight) and i have to press the NUMpad ENTER button, shake my mouse furiously, or click my mouse, which sometimes causes undesired actions, but gets me my screen back. sometimes the Black Flashes last a milisecond or 5 seconds or i have to hold the power button and restart because it won't come back on.
Specs:
Toshiba P205-S6337 Laptop
Ubuntu Karmic Koala
2.39 GB of RAM
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I use a program which makes a large image which I have to scroll to view. The program has no way to save the image, and I have no access to the source to modify it. The only way I have to get the image from the program is by screenshot. My goal is to save the full size image without having to piece together individual screenshots. I'm using this script to try taking a screenshot:
#!/bin/bash
window=$(wmctrl -l | grep "Program$" | awk '{print $1}')
wmctrl -v -i -r $window -e '0,0,0,6030,5828'
wmctrl -i -a $window
import -window $window ~/Desktop/screenshot.png
This uses wmctrl to get the window id ($window) for a window named "Program". It then tries to resize the window to the desired dimensions. It uses imagemagick (import) to save a screenshot.png on the user's Desktop. All of this works except the resize step. I can resize the window using wmctrl -r -e, but sizes greater than the screen size don't work. I'm using Ubuntu 10.04 and the Gnome Desktop. I run two monitors, but I've tried this with one of them disabled. Is there a way to resize the window larger than my screen to get a huge screenshot?
Part II: I tried using xrandr to set up screen panning, so as to have a bigger desktop than my monitor. xrandr --output LVDS --panning 2600x2500 This command makes the laptop screen pan over a 2600x2500 size desktop, even though it can only show 1440x900 at one time. To turn off the panning, I can use a similar command to set total size and with zeroes for the panning section. This gives me back my original laptop display behavior. xrandr --fb 1440x900 --output LVDS --panning 0x0 This is all done with xrandr, and does not require any Xorg.conf changes (my Ubuntu system doesn't even have an Xorg.conf).
My video card seems to only allow about 6.5 million pixels, even though the maximum dimensions are 8192x8192. That maximum seems to be the maximum for either dimension, but there is a limit to how many pixels can be drawn, which is the width multiplied by the height. Once I did the screen resize, I tried my script again and got a screenshot. The screenshot however is totally scrambled. I'm not sure if it's unable to take a screenshot of an off-screen window or if it is unable to handle the large dimensions of the window. With the panning display, the window should think it is visible, and the window manager should think it is on-screen. So there is a pixel buffer somewhere with those pixels in it, so there should be a way to get a screenshot.
Is there a known problem with the Lubuntu 10.10 image here? I have downloaded it to two different computers, then burned the images to two different blank CD's (different brands) and neither loads. Both only get as far as the Lubuntu menu, once ENTER is pressed at that point to load the LiveCD, a blank screen eventually appears with a flashing cursor at the upper left of the screen, that's it. They were both burned using the slowest burn speeds available.
View 9 Replies View Relatedi have just put a Geforce 7300 GT graphic card into my machine the problem is the max resolution I can get is 1024x768 at 60 hz the screen is a benq fp71g+. also the screen goes blank when i click on the display icon in system settings. i know that the screen can be run at 1280x1024 so I don?t know where the problem is.
View 3 Replies View RelatedThe day started as usual until I got the very bright idea to install Ubuntu. A new OS along side W7, that sounded great. I checked some guides on the Internet, it was all very straight forward. Install it and Grub will show you the OS:es when you boot up. I installed Ubuntu, rebooted. After the BIOS messages the screen goes blank and my screen on-button begins to blink, as if trying to find a signal, I press enter, it reboots instantly. After BIOS messages I get to a screen that says "GRUB error: uknown filesystem grub rescue>"
I've looked through everything here and nothing works. I've tried to fix the mbr-thingy using Windows Repair and even though it says "one partition was updated with new boot-thingy" when I reboot, I get into that very same grub rescue. I think my setup has something to do with it. I run RAID0 (2x360Gb hard drives), first having C: at 50Gb and then the rest as F: for programs and such. What I did was that I shrunk the F: part and then used that as partition for Ubuntu. Also please have a look at these screenshots, my partitiontables and such seems completely wacky to the raid: Where should the boot-loader go? I'm very, very new at this. I've had Ubuntu Netbook remix on my netbook for a time but still treat me as an utter beginner.
I'm trying to test out using xubuntu 10.04 on my one computer and keep getting a black/blank screen after selecting the 'try' menu option.Is there a way to fix this?I have tried some of settings via F6 with no luck.
FYI -The CD works fine as I have tested it on other machines.The version I am trying is xubuntu x86 (although I have tried ubuntu 10.04 x86 with similar results).I can Alt+Ctrl+F1 fine and get to the cmd prompt
I fixed this issue on 10.04, but just recently (1 hour ago) upgraded to 10.10 and am having the same issue. Machine boots fine, but the screen is blank for most of the boot, and plymouth is up for about a half second before I get to the login screen.I've tried searching the threads, but for the life of me I can't find the solution and can't remember what I did to fix it on Lucid.
View 4 Replies View Relatedlike any other Linux newb, I came to Ubuntu because my Windows crashed one time too many. And I chose Ubuntu because "it just works". But these past few days that hasn't been true. I'm posting this from a netbook with Ubuntu, and am having no problems whatsoever, but normally I use an Acer Aspire 5920G laptop. I'll include the specs as written on the sticker:
* Intel Core 2 Duo processor T5250 (1.5GHz etc)
* Up to 1024 MB Nvidia Geforce 8600M GS Turbocache
* 2 GB DDR2
Let me know if you need more details, and I'll add them later. Now, what happened was I clicked "hibernate" while leaving Firefox open. (I've done this hundreds of times, no problem) And when I went to turn it back on the next day there were weird graphical glitches in the loading screen, and it booted to the "tty1" prompt screen. I did a lot of googling and found quite a few posts about it, but the solutions either didn't work, or I didn't understand them. After trying several different suggestions from this forum and others, I managed to delete the graphics drivers. That enabled me to boot in low graphics mode, and naturally, I tried a whole bunch of things to make it work properly again. That only made it worse. Now it went straight from the loading screen to just blanking out and turning the display off. So, I tried new things. Over and over. The weird thing is even when I disconnected my harddrive and ran from a Live USB, the problem persisted. Could there be an issue with the graphics card itself? Anyway, after reconnecting the harddrive I tried to boot again. And it suddenly worked. Even HDMI to my bigger screen worked.
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I have been running 10.04 quite successfully, when I upgraded to 10.10, I have a problem with the newer kernels. If I let it boot into the latest one 2.6.35-23, I get the Ubuntu 10.10 splash screen for a second then a blank screen, same with 2.6.35-22. I have to run with 32-25 to get it to load the gui.
I have an AMD Sempron 2800, 1.6GHz pc, but I'm not sure if it's running 64bit.
I've been running Ubuntu 10.10 very smoothly for a while now. Decided to upgrade to 11.04 - managed to corrupt the hard disk the first time by letting the laptop hibernate part of the way through but reinstalled from a live CD of 11.04 and it's now working except for this issue.
If I shut the screen on my laptop (or press the screen off button) either the screen won't come back on or it will but frozen (I can move the mouse but not click on anything etc.) In this state music continues to play (from spotify under wine) and if I press my hibernate shortcut (power button) the computer hibernates, only to wake into the same situation. I've got a Dell Latitude D520, upgraded to a bigger hard disk and more ram - the ubuntu partition has 50gb. Windows is working fine.
Edit: I noticed a sticky thread which includes something about a blank screen but I think this is a different issue?
I have installed Ubuntu 11.04 along side windows 7 ultimate. But the problem is as soon as I switch on my computer. There is only a blank screen with my TFT screen displaying a msg "Out of Range"
Then suddenly Ubuntu loads without showing any option to load windows 7.
So the first couple of days using Unity with my dual monitors went fine. Today I plugged in my laptop to the second monitor, and while the top bar and the side menu are being displayed, all the desktop icons, background, and actual program windows are black. Basically I just have the menu bar and the launcher. The windows are still there when I unplug the second monitor.
View 3 Replies View Relatedhow to upgrade my ubuntu 9.10 system. I would like to do a clean install of lucid, but I have way too many files. I have a big hard drive, so space was not a problem, and things got out of hand ^^ One thing you should know is that I have plenty of room for my files even if the drive was half it's size, so my idea is possible space-wise. (And I am prepared if this fails. I have backed up my stuff, but would like if it I didn't have to rely on that)
What I want to do is make a blank partition with gparted and install lucid on it. Then I want to keep it a dual boot just to make sure my hardware is working ok, then move my home folder to the new partition, make the lucid partition take the whole hard drive, and delete karmic. I do not want to upgrade because I messed up my install a lot while learning linux, so I really need to start over.
I am trying to install fedora 12 on my computer. I have burned the live cd ISO and it works just fine until right before it shows the login screen. I suspect that it may have to do with my ati radeon 9800 graphics card. give me some boot options or some such thing so that I could install fedora on my computer. Also some other specs
ASUS A7N8X Mother Board
AMD Athalon XP
1GB ram
My problem is that I can't log in to Ubuntu, as you've already seen in the title. Here's what's happening:
I turn on the computer. I see the GRUB. I press Enter. I see a blinking underscore (_) as if i was in a terminal. The underscore disappears and I can see my cursor, but nothing else. I can move the cursor, but that's all I can do.
I've seen some similar problem here on the forums, but he could log in, he just couldn't see the screen.roblem!
OS: Ubuntu 10.04 LTS, kernel 2.6.32-31-generic. All updates are current.
Configuration -CPU: Intel Core i5-2500K, quad core 3.30GHz
Memory: 16GB RAM (10% used), 20GB swap-space (0% used)
Video: Two ASUS EAH5450 Silent cards, each with ATI Radeon HD-5450 GPU and 512 MB
Monitors: Sceptre 22", 1680x1050; both connected to one video card. The second video card has no monitors connected at this time.
ATI/AMD proprietary FGLRX driverLSPCI output -
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The PC boots up normally into Gnome desktop environment. When I hit ctl-alt-[F1-F6], -The screens blank out. One screen gets no video signal, as evidenced by a blinking power light The other screen is completely blank (not even a blinking cursor) If I hit ctl-alt-F7, I get the Gnome desktop back. I have been able to determine that even if the screen is blank, and appears completely dead, the system processes my keystrokes. For example, if I pretend that I am at the log-in screen and type <username> <enter>, then <password><enter>, then 'xinit -fg white -bg blue -- :1 vt8'<enter>, the PC switches to virtual terminal 8, and shows a shell window. From that point onwards, my keyboard entries show up in white-on-blue characters, and the behavior of this shell window is perfectly normal. I can log into another Linux box using ssh, start a Gnome / KDE / XFCE4 / LXDE session and work on the machine normally; or start another X-session and a desktop environment of my choice. My guess is, the console is invoked perfectly well; it is set to display black-on-black characters.
What I Am Looking For:Confirm if my guess about black-on-black console is valid.
Suggest how I could get a screen showing white characters on black (or indeed, any combination I could read)
Screen is blanking out after x minutes. Don't know how to set it to not do that.
View 14 Replies View RelatedI have installed openSUSE and everything is fine except one issue.The screen goes black and audio cuts off for like a second and comes right back. It happens sporadically once or twice here then some times a few times repeatedly.Running openSUSE 11.2 Drivers from the NVIDIA Repository.(For my GTS 250)Stripped the audio flags from the EDID for my tv to prevent trying to send audio over hdmi (I'm not using the hdmi pass through on my video card) so i can use the audio out on my sound card.No error messages are displayed when it blankslspci output:
00:00.0 RAM memory: nVidia Corporation C51 Host Bridge (rev a2)
00:00.1 RAM memory: nVidia Corporation C51 Memory Controller 0 (rev a2)
00:00.2 RAM memory: nVidia Corporation C51 Memory Controller 1 (rev a2)
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I've done as much research as I can on this problem of mine before making the last resort and posting what I think is a stupid question.I've installed RealVNC on my linux box, but when I try to connect (whether is locally, over LAN from my W7 PC, or through HTTP) I always get the same result, the vncviewer window is black/blank with a X as the cursor. I've edited the /home/.vnc/xstartup file to contain:
Code:
#!/bin/sh
# Uncomment the following two lines for normal desktop:
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I've recently installed the 64bit version of WUBI on ASUS K50IJ with windows 7. Everything went smooth however when I try to boot into ubuntu, it shows that all the drivers are loading, I can even see the desktop background image for a second and then the screen goes blank. It is still ON however nothing is showing on it.
Pressing "CTRL+ALT+DEL" reboot the system.
even get access to the console for further debugging?
Anyway one day I start my computer and instead of starting normally it comes up with a screen which says GNU GRUB version 1.97~beta at the top. I selected the option Ubuntu, Linux 2.6.31-19-generic as I figured this is what normally loads without being prompted in the grub menu, but after this I got the ubuntu logo for a few seconds then my screen goes blank. My laptop is a hp510.
View 9 Replies View RelatedI'm a newbie so apologies if there is a trivial answer to this.
I (maybe somewhat rashly) tried to connect my tv to my laptop (Dell Latitude D400) running Ubuntu 9.10.
I plugged in the cable, went to the System>Display menu, where it had detected the model and make of tv (Samsung 19" LCD) (I think the resolution was 1650 x 1050 or similar). I clicked the box to activate the second monitor with the "Virtual resolution" adjusted. It told me to log out then log back in.
I accordingly logged out but then couldn't log back in. It had evidently changed the resolution not only on the 2nd monitor but also on the laptop monitor. A box was visible on screen but completely illegible/unclear since the laptop monitor couldn't display that resolution.
After a few restarts and button pushes it is now restarting at a terminal (I enter my username/password at a command prompt on an otherwise blank screen rather than the graphical interface loading up).
Question: are there any commands that could change the resolution back to its original settings then restart the Ubuntu graphic interface? Some thing similar to the "load with last known good configuration settings" option in Windows maybe.
I was just surfing the web the screen suddenly went blank and then the clock went off.
View 2 Replies View RelatedMy ubuntu isn't starting up today. I can't remember anything unusual happening last night, not even a standard system update.
It presents me with the Grub loader, screen goes blank, and that's as much as I get. I have gone into a recovery mode through the grub loader, and that gives me a bit more info, but I don't know what to do with the information it is giving me.
It says: Gave up waiting for root device. common problems (etc) ALERT! /dev/disk/by-uuid/<long name> does not exist. Dropping to a shell.
It is right - the /dev/disk/.... does not exist. A different file with an equally long filename does exist
Last week I very eagerly downloaded Ubuntu 10.04 and burnt it to a CD. I just want to try out the new version using the Live-CD. I tried it on both my home desktop and my work notebook. I was able to get the initial screen where I can select the language and keyboard, etc.. But when I tried to start the program I ended up with a blank screen one both computers.
So I just thought, I will wait until they get these problems fixed then I will download and burn a new cd. Question, have their been fixes to the ISO file since it first was released that would fix these kind of problem? How does one know if the ISO file has been upgraded; is there something after the 10.04.01 or something like that?
So finally decided to upgrade the desktop (dual-booting with Windows 7 for games) from 9.10 (fresh install awhile ago, never did anything with it) to 10.04 - upgrade went fine, reboot, watch grub go by, and voila. Blank screen.
Things I tried in grub:
add 'xforcevesa'
add 'xforcevesa' & remove 'quiet splash'
add 'nomodeset' & remove 'quiet splash'
add 'nomodeset xforcevesa' & remove 'quiet splash'
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I was hoping to test out Windows 7 in a VM, see how far I could get for GPU acceleration there - I'd much rather not run Windows on the bare iron for that machine, but if I can't get this fixed I have no option :-/