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Old 10-04-2010, 04:22 AM   #1
PehJota
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Distribution: Desktop and netbook: Debian Squeeze; Router: DD-WRT
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Display Goes Black After a Couple of Seconds


I had my system running fine on Debian for about a month and a half. Then tonight the display suddenly went black. The system was still running, but my screen was black (though the monitor didn't indicate that it had lost signal). I restarted the computer; it booted through the BIOS and showed me my GRUB menu, but then the display went black again. Shorting the jumper pins to clear CMOS data didn't help; in fact, that made the display go black even sooner. Now, I see my motherboard's BIOS splash screen for a couple of seconds, and the display goes black. I know the system is still booting okay, because I hear the usually noises from the internal speaker. But I now have no visual output.

Could this be an issue with the motherboard or the video card? The board doesn't have onboard video, or else I'd try that. And I don't have any spare boards, video cards, or monitors available to me here. I did try using a D-sub cable instead of DVI-D (my monitor and video card support both), but that was no better. What can I do to try to fix this problem? I really need this computer for schoolwork, so any insight here is appreciated.

Motherboard: MSI 870A-G54
CPU: AMD Athlon II X2 250 (at 3.0 GHz, not overclocked)
Video card: Sapphire 100252HDMI Radeon HD 4550
Monitor: Asus VW195T
 
Old 10-04-2010, 05:02 AM   #2
H_TeXMeX_H
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Did you update anything recently. To me it seems like the framebuffer drivers are missing.

Does this machine boot to the console ? if so, try logging in blind, then startx.
 
Old 10-04-2010, 05:23 AM   #3
PehJota
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I can't boot to a console and startx, because in its current runlevel the system boots into X. And I can't easily use the console blindly.

I'm almost certain it's a hardware issue anyway. The computer doesn't even get to the boot loader, let alone an operating system, before the screen goes black. It goes black about halfway through the motherboard's splash screen. I've also tried using a boot CD that I know has worked on this machine in the past. Because of this, I'm pretty sure it's a hardware failure of some kind; I'm just trying to figure out where. But not having spare parts around makes it hard to troubleshoot.


EDIT:

I just connected the monitor to this laptop I'm using and added it to the display. The screen goes black one second after doing so. So it appears I've isolated the problem to the monitor. So now is there anything I should try to further diagnose the monitor problem before I go through an RMA process that may disrupt my ability to do schoolwork?

Last edited by PehJota; 10-04-2010 at 05:36 AM.
 
Old 10-04-2010, 06:03 AM   #4
H_TeXMeX_H
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So the monitor goes out even with another computer ... then it is the monitor, get another one.
 
  


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