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Old 01-09-2005, 12:44 AM   #1
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Occasional black screens at startup

Hi, I started using Fedora Core 3 recently and sometimes immediately after the initial loading screen (and before the prompt for username), my monitor screen will turn black. Nothing will happen despite mouse movement, keystrokes, etc. After I reset my comp, I usually don't have the same problem again until I turn off my computer. Does anyone know what could be causing this? Fedora detects my video card (ATI Radeon 9800), and I set my monitor as Generic LCD Display 1280x1024, which seems to be working alright. On another note, when I startup windows xp, my comp will also freeze the first time around unless I start in safe mode, so I'm thinking that the problem may be something with hardware if I have startup issues with both windows and fedora. I have a stadnard ps/2 keyboard and usb mouse, AMD Athlon 2.4, 512 mb ddr ram , nvidia nForce2 chipset. Umm, I think that's all the relevant info. I had these problems even before updating the kernel, so that isn't the problem. Any help would be appreciated...thanks!
Old 01-10-2005, 06:04 PM   #2
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I'd suspect the following things...
a) underpowered PS for the box
b) buggy BIOS version - check for updates
c) non-suitable RAM or RAM timings

Happy hunting,
Old 01-11-2005, 07:24 PM   #3
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Thanks for your reply, but now these occasional black screens have become permanent. I recently installed glib and Java VM plus some other packages with yum, and after I restarted my computer, I could no longer get to the login screen. I don't know if what I installed had any affect, but I don't have any backup kernels to boot to. Should I boot off the CD and reinstall fedora or should I just forget about it and upgrade my computer? I don't know if my PS is the problem. I don't think it's too old, and it's 420 watts. My Shuttle mobo and amd cpu check out as being compatible. I'm really not sure if this is a Linux problem anymore since my windows will occasionally freeze at startup, even with minimal processes starting up in the background.

Last edited by holyfeces; 01-11-2005 at 07:50 PM.
Old 01-13-2005, 10:26 PM   #4
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Ok, so after that last post, my computer booted up properly the next day for some mysterious reason. However, when I do occasionally get the black screens, something else flashes too. A red box in the middle of my screen flashes saying:
H: (some number) kHz
V: (some number) kHz

So is this a monitor problem then? I have a Xcreen LCD. Yea, it was cheap...
Old 01-13-2005, 11:00 PM   #5
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Play around with the monitor's frequency. I had similiar
problem. Does the monitor works for a Window machine?
Mine did (but not Xandros). It turns out the frequency
needed to be change.

Old 01-13-2005, 11:44 PM   #6
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thank you! It does work on a Windows machine, and it works now on Linux after I did a screen reset. Again, thanks a lot.
Old 01-15-2005, 03:15 PM   #7
Michael Davont
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i am having a similar problem can you please tell me how to do a screen reset as this is all foreign to me on that kind of aspect


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