Ubuntu :: Screen Switches Blank Randomly?
Sep 12, 2010
I have just installed 10.04 x86 for my mom and while she is using it (tyrannically just browsing facebook/email/flash games) the screen randomly goes blank then back to normal again. This symptom generally worsens after a few minutes until it is unusable. Specs are as follows:
Athlon X2 5200+
3GB RAM
ATi 2400pro 256MB (using the standard out of the box drivers)
Also running compiz and emerald so that I was able to make the desktop look like OS X.
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Mar 5, 2010
I have the following system using an ATI graphics card, SATA Drives and want to install Fedora 12 as a dual boot option with Windows XP.
Using an install DVD it seems that Fedora installs then at a point during the copying of packages the screen goes blank actually switches off. The DVD Drive and Hard drive still work , my guess is completeing the install. On reboot I do not get the option to boot to linux.
I have 2 SATA 3Gbs Hard Drives formatted for windows NTfs. One has 2 partitions and some free space, the other is formatted NTFS and is my data disk.
I would like to be able to access the data disk with both Windows and Linux and install Linux system in the free space.
Having read a few of the guides available, none of them seem to mention this problem, although I am aware of the Ati support problem. I am hoping I do not have to replace my graphics card with a nVidia one.
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May 30, 2010
I am browsing or chatting with someone or doing whatever, and the screen will randomly go black and the sound will be cut off as well. The computer doesn't shut off, it's not in Suspend mode. All processes are still running when this happens. And it doesn't come back.
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Mar 17, 2010
I am running 9.10 on a HP Compaq. Every few days X will die. The screen goes blank and will not display anything. I have to SSH in, but even trying various commands like gdm restart does not help. I eventually have to reboot the box. Below is a snippet (hopefully not too large) of dmesg:
/dev/sr0 on /media/cdrom0 is a CDROM, but I dont think thats the issue.
[707515.629800] sr 1:0:0:0: [sr0] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[707515.629806] sr 1:0:0:0: [sr0] Sense Key : Illegal Request [current]
[707515.629811] Info fld=0x45d18, ILI
[707515.629813] sr 1:0:0:0: [sr0] Add. Sense: Illegal mode for this track
code....
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Mar 9, 2011
I have a Fujitsu Siemens T3010 Lifebook on which I have Ubuntu 10.10 installed. The installed kernel is 2.6.35-27. lspci lists the installed network contraller as:
01:0d.0 Network controller: Intel Corporation PRO/Wireless LAN 2100 3B Mini PCI Adapter (rev 04) At first glance, the wireless adapter seems to be functioning normally. The problem is that every once in a while the wireless connection gets dropped, and gets reestablished a while later. At times, this happens very frequently. I have been able to figure out that the reason that the connection is dropped is due to a HW rfkill. The 'rfkill list' command produces the following output following the connection getting dropped:
Code:
0:phy0: Wireless LAN
Soft blocked: no
Hard blocked: yes
'Hard blocked: no' is printed whenever the connection is up and running. The laptop does in fact have a physical killswitch located behind it and needless to say turning it off also produces the same result. However, the loop of the connection getting dropped and reestablished happens even in the absence of physical contact altogether, so it can't be that a slight wobble is being misinterpreted as the killswitch has been triggered or anything.
I have a nasty feeling that the problem may be due to a physical problem - but I want to exhaust all other alternatives before I go digging into the box. Even if it is not fixable, perhaps there may be a way to override the problem somehow. I am posting a section from my daemon.log that spans a single rfkill loop below.
[Code]...
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May 9, 2010
I 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.
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May 10, 2011
I'm running Ubuntu 11.04 on my laptop. At work, we are beginning to tinker with running Ubuntu on our student systems (school district). The thing is, Unity and Gnome Shell are new enough that they are not considered right now as viable options to test in. That said, an alternative was needed that was quick on older systems yet very configurable. XFCE. So I installed XFCE on my Ubuntu machine. This way I can tinker with the interface as if I was a student but then I can bounce back to Unity which I do prefer for personal use. The thing is, the login screen switches over to XFCE's. Is there a way to get my regular Ubuntu login screen back?
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Jan 16, 2011
1. I can run the graphical installer at full resolution without using "nomodeset"
2. I can boot into the Gnome desktop using the option "Try without installing" without any problems
3. When I install to my HDD however, I can boot but just at the point where the logon screen should come(after the black screen,blinking cursor), the display reports no signal and goes to sleep. I can hit enter, type my password, hit enter again (blind, as there's no display) and the HDD spins up as if logging in, but I don't see anything.
4. Using "nomodeset" makes no difference whatsoever other than the graphical installer runs at a lower res.
5. using the alternate installer changes nothing
6. recovery mode has the same issues
It appears to me that booting into Gnome without installing uses some sort of generic driver, whereas installing uses a different driver which is sending my display to sleep. I'm using Ubuntu 10.10 64Bit. Have also tried using 10.04 64Bit and the alternate 10.10 .iso, but to no avail. My graphics card is an NVidia Quadro NVS 295 with a DisplayPort-DVI adapter. I've previously installed 10.04 64Bit on another system with an NVidia GT240 card with no problems whatsoever. I can't try that card in this machine as it's too big for the case chassis, let alone the case.
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May 1, 2011
Upgraded to Ubuntu 11.04 which trashed my useful desktop.
Synapticed gnome and changed login preferences to ubuntu classic which basically fixed the desktop except...
If I open a program, say LibreOffice or firefox it opens correctly.
If I move the window to the second screen, it switches to fullscreen mode.
If I click on the resize button, then it opens correctly, but on the first screen
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May 17, 2010
When 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
[Code].....
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Nov 26, 2010
When i some times start up the system the screen switches to a lower resolution.Then when i restart my system and it switches to 1152x864.What can be causing this problem and how do we root out this ?
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May 5, 2010
I cannot install Ubuntu 10.04, or even boot into the live CD. I'm not an expert, but I've used Ubuntu for several years, and I'm pretty sure I'm not doing anything stupid... Here's what happens when I boot with the Ubuntu 10.04 live CD: I get a purple screen with just an accessibility(?) symbol at the bottom (this lasts 15 seconds). The screen goes black, with a flashing cursor, then changes back to purple, this time with an Ubuntu logo, with 5 dots acting as a progress indicator (this lasts about 1 minute). The screen switches to standby. The CD drive continues to make noises for another minute or so, then stops.
I physically removed my graphics card (ATI Radeon HD 5770), and plugged the monitor straight into the VGA port on the motherboard. Now the CD boots up fine. I could try installing Ubuntu at this point, while my graphics card is unplugged, and then plug my graphics card back in, and see if it starts working then.
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Feb 21, 2010
Few days after installing Ubunto 9.10, during installation of gstreamer, the installation utility got stuck, and with it the whole desktop icons. (I think the gstreamer has nothing to do with it). When I tried to execute some icon, like the terminal, it will not open. After restarting the computer, I get a tty1 login terminal and not the graphical one (tty7). When pressing Ctrl+Alt+F7, nothing happens. It switches to a black screen. "sudo startx", gives some error log. I already reinstalled the X-server, ubuntu desktop and other stuff.
What can be the problem? Is it related to my video card (nvidia 7600 GT)? I didn't install any nvidia specific driver. This happened to me earlier and I reinstalled Ubunto. I think maybe I should move to some other distribution.
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Dec 26, 2010
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.
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Jan 26, 2011
The 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.
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Oct 9, 2010
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
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Jan 14, 2011
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.
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Apr 15, 2011
like 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.
[Code]...
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Dec 22, 2010
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.
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May 4, 2011
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?
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May 13, 2010
I have downloaded the ver10.04. I am running it on my laptop with a NVIDIA GeForce GO 7600 128MB graphics card. I am using the NVIDIA driver on the system. The screen flickers randomly after say every 1 min. By flickering I mean it just refreshes and goes blank for say 1ms during the refresh. It happens even more if I turn on CompViz option.
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Jan 11, 2011
i 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.
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May 7, 2010
My desktop computer (Lucid) crashes randomly and returns to the log-in screen.
It does so when when there is no activity and the screen-saver is on.
I get messages like this:
Quote:
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Nov 22, 2010
I upgraded 10.04 to 10.10 (32bit), the upgrade process didn't go that well because first it didn't boot beyond GRUB. Solved this by unplugging my keyboard (my ubuntu is a server machine without keyboard or mouse, I like to use the desktop version through vnc). After that is booted to shell, which was not so nice either. This time it was the legendary nouveau driver which sorry for my language I will never install again (caused major problem twice already). Installed nvidia drivers and got a display for X this time and it booted nicely to login screen.
My problems have arised since the upgrade, the system will randomly "crash" and go straight to login screen, ending my current session. Sometimes my mouse cursor even changes to the X-mark. I can't see anything in gdm, x11, syslog etc. that would explain the crash. So far I've found best log from .xsession-errors which is here:
[Code]...
I got a lot IPv6 errors on the same log too, but those were caused by utorrent+too old wine. Didn't remember that upgrade deletes/disables extra-repos and I was running the stable wine (1.2.1) instead of the latest one (1.3.7). Upgrading wine solved the error from utorrent IPv6 connections.
So any ideas what I could do to fix these crashes? I'm not so much into clean re-install because of all the configuration I'll need to do then. I do have home on a separate partition but there's lots of software to install and configure.
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Jan 3, 2011
Sometimes, out of the blue, my screen will suddenly change brightness. And no, not the gnome power manager dimming the screen when idle, I'm talking about it suddenly going from dimmest to brightest when I haven't even touched the screen brightness buttons in the last few minutes.
what package would I file this bug against)? This is Maverick on a thinkpad T60, and I can provide any other information that people find relevant. On what may be a related note, it seems that one push of the screen brightness up or down buttons causes two increments in brightness.
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Feb 20, 2010
I set login automatically in the login screen in the systems menu. but on after every boot it shows the login screen many times even after a correct login, and sometimes it doesn't show. I already updated my system so what should I do so that no more login screens after boot?
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May 13, 2010
I installed 10.04 beta 2, but have all the updates to this point. Everything freezes randomly. I get a weird pattern across the screen and the mouse and keyboard stop working. From what i can tell, the hard drives just keep spinning at whatever speed they were spinning when the freeze occurred.
I haven't been able to reproduce it on purpose.
I was using an Nvidia 8400 GS and through some reading i thought it might be the nvidia drivers. I tried reinstalling the drivers and still froze randomly. I took out the video card but I realized I have an onboard nvidia chip (GeForce 6150SE nForce 430 rev a2). Drivers or not, it still freezes randomly.
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Dec 4, 2010
I'm really new to Linux (meaning that I never programmed or anything) but have a major issue here: I have been using Ubuntu since 9.04 (always upgrading) and always with this Laptop, without problems. Then I installed 10.10, didn't like it and downgraded to 10.04. Thats when the issue came up. So now I'm using Ubuntu 10.04 and have an Intel GMA 4500 graphic card. That, though, is all I know about the graphics on my Laptop.
The problem:Every now and then (mostly right after logging in, then randomly) my monitor will flicker quickly and then go black completely.
After I close the laptop and open it up again, the screen works fine for some seconds, then, without moving anything, it goes black again. Sometimes it just stays normal, too. Just changing the angle of the monitor doesn't help, only closing it completely and opening it.
1) It could be the cable loop.BUT: The issue only appears after logging on to Linux. And moving the monitor doesnt help, just closing it completely.
2) Graphic driver.I have no idea how the software part of Linux works considering graphics. I have read that many people have had problems with GMA 4500, so my hope is that it can be fixed.
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Jul 10, 2010
GDM2 is doing something very weird on my Ubuntu Lucid install. It occasionally decides randomly to put the toolbar (with keyboard layouts, the time and date, shutdown options, and so forth) at the top of the screen when it appears. I think it's always supposed to be at the bottom of the screen. Why is this happening?
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Dec 3, 2010
I am asking in the wrong place or anything like that, I tried to understand the Tutorials, but I am only human Oh and I am not a native speaker of English, So I also apologize for that...Okay enough apologizing, I will assume that you are all nice people and wouldn't have made fun of my stupidity anywayAs I said I am new to Linux and also to my PC. I bought it a couple of weeks ago and I tried to install Windows on it, but it was displayed in only 16 colors ( I assume this is not connected to my current problem but it might be...) and I couldn't fix that so I installed Ubuntu 10.4.something( It asked me if I wanted to upgrade to the newest version...) . Since then I have been really happy, I only had minor problem with the chat software but after I googled it I found a solution and I even used the console for the first time in my life.
The problem with the chat software is back now, but I don't care about that.My Computer randomly stops working and the screen goes all weird. It switches between a mix of white and black bars, something really colorful and a black screen with text ( I have the feeling it's different text every time) I am not sure what happens after that, because I always turn it off and restart it. It won't react to anything when it is in this weird mode. I don't think there are any special situations in which it happens and I can't reproduce it, it just happens when I don't want it to happen. A friend who uses Linux said it might be a temperature problem, he only knew what I just told you. I am not sure if there is a connection between the time the computer has been on and the time it shuts off...I really like Linux and I would love to use it without ith when I said that I got my PC new ( it was used though) I was trying to say that I don't know whether this is a Ubuntu problem or not
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