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Old 07-15-2004, 03:32 PM   #1
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keyboard leds flashing.. what does it mean?

MY system freezes ramdomly.. the only things i see is that the keyboard led's are flashing. Is it possible that thers a kernel panic? I have been changing the kernel too. Also what sort of measures can i take to see if the kernel is indeed in panic?

Old 07-15-2004, 03:46 PM   #2
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what sort of measures can i take to see if the kernel is indeed in panic?
Your keyboard flashing for example...
Unfortunally you have to hard reboot from the reset button of your PC after that, play with the bootloader to load a different kernel

Last edited by keefaz; 07-15-2004 at 03:47 PM.
Old 07-15-2004, 08:20 PM   #3
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Do you have your keyboard, mouse, monitor connected to a KVM switch? Usually these have a key sequence that can be pressed to switch between systems and if you hit the key sequence without choosing the system to switch to the keyboard LEDs usually flash and won't accept any input until you choose the system (by pressing a or 1 or whatever your KVM switch expects).
Old 01-30-2007, 12:41 PM   #4
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keyboard blinking light

I am having the keyboard blinking lights problem. The machine will stay up for a few days/hours and then on come the blinking lights on the keyboard(num lock and cap lock lights) and the machine is no longer useable. I am running RHAS3U4 on a Dell 260 box. This box is using a KVM switch to switch back and forth between systems. I have reloaded the OS twice and have even switched machines. What else is next? Is it possible something in the users .gconf or .gconfd directories, seeing as how the problems stayed with the user after the box was replaced?
Old 01-31-2007, 06:17 AM   #5
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I have problems with KVM, obviouslyyou need to boot with it switched on to the right box
also sometimes I need to unplug and replug my mouse when i switch between boxes.
Old 01-31-2007, 11:03 AM   #6
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I have now replaced the KVM to eliminate that as a potential problem. I have disconnected both mouse and keyboard also. Still no resolution
Old 01-31-2007, 11:53 AM   #7
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Read the documentation for your mother board and/or BIOS. Many of them will report hardware errors by various sound or light codes, and your flashing lights may be telling you that some hardware component of your system is failing.

Your BIOS may create a log you can review for error conditions.
Old 02-03-2007, 01:49 PM   #8
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I have the same syptoms occasionaly after wakeup from suspend-to-ram. So I expect it to be related to some hardware/BIOS level stuff failing. The computer is completely dead, I have to plug off the power.

Where could one find logs?


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