PE 1750 "blinks" on a PE180AS KVM switch
hbp4c at virginia.edu
Tue Apr 24 14:01:41 CDT 2007
Last week I was setting up a PowerEdge 1750 to become a dedicated
print server for my deparment. The server is running Centos 5 and is
set up to run only in text mode, no X graphics. The machine firmware
is level A12.
When I set up the machine, I connected it to an older Dell 71PXP KVM
switch I had in my office. After debugging cups and getting things
running smoothly, I moved the machine over to my rack where it was
connected to a PowerEdge 180AS KVM switch.
When it was connected to the first switch, everything worked great.
When I connected it to the 180AS, I now get an annoying "blink" when
it boots every time the system starts a service and the green [OK]
comes up. When I log in (again, text mode, X is not set up on this
machine) it blinks. The most annoying issue is if no one uses the
machine for 5 minutes or so, the display blanks out and never
returns. Pressing numlock or caps lock doesn't turn on any lights
once it's in this state (though in the first 5 minutes these buttons
I've checked out my grub.conf and I am not passing any vga options to
the kernel at boot - it should be as vanilla as I can get it to be.
I've also replaced the cat5 cabling between the machine and the
180AS. The only thing I haven't replaced is the USB/VGA to Cat5
coupler behind the machine. The 180AS works as expected with other
Any ideas? I suspect a software bug, but like I said, I can't find
anything else that might be mucking with the vga settings.
Never interrupt your enemy when he is making a mistake
Computer Support Technician
Astronomy Department, UVa
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