about 15% of the time after a reboot of one of six Dell PowerEdge 2650 servers in a Dell rack and using a KVM switch the keyboard & mouse will fail to work. the only option at that point is to hold the power button down for like 10 seconds and do a hard reboot. the cables and kvm switch have been swapped out for other ones, the cables are not loose, and the bios had been upgraded, yet the problem persists. has anybody else experienced this problem, and also are there any fixes for it ? tia ...
I suspect that the issue that you are having is PS/2 related, but I would need the model number of the KVM switch you are using to confirm that fact. What I suspect you are having problems with is called "keep alive" functionality which is an issue with all PS/2 ports regardless of whether you are using a direct attach keyboard and mouse or a KVM. What happens is that PS/2 ports will sometimes go down during a soft reboot or when they become unplugged when the server is powdered on simply because that is the way all PS/2's are designed, for better or worse. You would not have the same issue using a USB keyboard and mouse.
If you could give me more details on model numbers for your KVM switch and how your cable infrstruction is laid out, I'd be happy to see if I can shed any more light on the issue.
I have had a similar problem on numerous newer PowerEdge servers, mostly on Belkin KVM's, all in different locations. If you reboot the server without the KVM actively on that server's station - no k/v/m action. I have heard that putting a PCI Video card in does bypass this problem (odd, but possible).
Again, this is on numerous newer PowerEdge servers. I have an 1800 right next to me that is exhibiting the problem right now. Only solution will be to use RDP to reboot the server, and move the KVM over to that unit throughout it's boot process.
Interesting, here in my home I have just gotten a brand new PE1800. I already had a BELKIN OmniCube 4-Port KVM switch and I have this exact problem! If I boot my server without the focus being on the PE I will either get a SYSTEM ERROR in ntdll.dll (one of those HALT errors) or there won't be any mouse and/or keyboard on it (I say and/or while sometimes the keyboard is there, but never a mouse).
I'll definitely monitor this thread to see what the solution will be.
Rack_Guy
88 Posts
400
0
Posted June 10th, 2005 13:00
Hello,
I suspect that the issue that you are having is PS/2 related, but I would need the model number of the KVM switch you are using to confirm that fact. What I suspect you are having problems with is called "keep alive" functionality which is an issue with all PS/2 ports regardless of whether you are using a direct attach keyboard and mouse or a KVM. What happens is that PS/2 ports will sometimes go down during a soft reboot or when they become unplugged when the server is powdered on simply because that is the way all PS/2's are designed, for better or worse. You would not have the same issue using a USB keyboard and mouse.
If you could give me more details on model numbers for your KVM switch and how your cable infrstruction is laid out, I'd be happy to see if I can shed any more light on the issue.
Regards,
The Dell Rack Team