On 27 November 2012 00:20, Peter Goggin petergog...@bigpond.com wrote:
I use a KVM swith to control 1 wins#dows and 2 linux boxes. The KVM I was
using uses ps2 mouse and keyboard. The linux boxes worked perfectly,
although the winows box has only one ps2 port and so I needed a separate
usb mouse. Unfortunately my ps2 keyboar5d dies and so I have been trying to
use a usb kvm. This works perfectly with the windows box but for some
reason the linusx box does not recognise the monitor using the usb kvm. Is
there any way to set the linux box permanently default to my monitor which
is a Dell LCD with a resolution of 1920 x 1080?
Regards
Peter Goggin
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I have been using a DVI/USB KVM (Aten CS1784) for years with Ubuntu without
problems so the concept should be fine. The only thing I did find with mine
was that with some peripheral devices preferred being used in the shared
USB slot (at the front of my KVM box) as opposed to the actual
keyboard/mouse usb slots (at the rear of the KVM). While that in itself
doesn't help you, I did find that the main reason this happened was the the
KVM device itself wouldn't always pass through the correct information for
the peripherals to the computer systems. So the first thing I'd check is
that the KVM is actually passing through the correct EDID information about
the monitor to the Ubuntu system. There are plenty of guides out there to
check and edit the EDID if needed, I did a quick search for Ubuntu EDID
and got heaps of relevant results on the first page. For whatever reason
some drivers are really heavily dependant on using this data to set up the
screens correctly so that's probably where I'd start.
The other thing to check is the model of the KVM itself, someone else out
there on google may have already found a solution or work around. For these
sorts of situations I just google Ubuntu ModelNumberofDevice and see what
I can find.
Let us know how it goes.
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Regards,
Jared Norris
https://wiki.ubuntu.com/JaredNorris
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