KVM switches


6 posts
by Tirpitz » Sun Sep 23, 2012 11:50 am
Everybody does not have enough place for another keyboard, mouse and monitor. So the problem can be solved also by KVM switch. It is without any discussion, the video ports must be digital, DVI or HDMI. HDMI/DVI reductions are available without any problem. I think the list of verified KVM switches is also needed. Nobody wants to buy KVM switch which will not work properly.
One example is on this forum, one user has problem with Aten CS1784, so this model don't take.

I looked for some not so expensive KVM switches at a few retailers in my country, I found those types with DVI for 2 machines.
1. Belkin SOHO DVI&USB 2port - http://www.belkin.com/uk/IWCatProductPa ... _Id=461346
2. Aten CS1762A - http://www.aten.com/products/productIte ... no=CS1762A
For completeness exists these two without own power:
3. Aten CS682 - http://www.aten.com/products/productIte ... l_no=CS682
4. Aten CS62D - similar but with old-school PS2s

Something with DVI for 4 machines:
Aten CS1764A - http://www.aten.com/products/productIte ... no=CS1764A

Which experience do you have with some of them? Do you know about some better models?
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by tedhale » Mon Sep 24, 2012 3:09 pm
I found it much easier to install a VNC server and just us a VNC client to access the Pi. This is especially useful since most of my Pi systems will be remotely located. If you only need command line access, then use Putty and SSH.
- Ted B. Hale
http://raspberrypihobbyist.blogspot.com
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by hoojii » Sun Dec 30, 2012 9:44 am
Tirpitz wrote:I think the list of verified KVM switches is also needed. Nobody wants to buy KVM switch which will not work properly.
One example is on this forum, one user has problem with Aten CS1784, so this model don't take.


I have had no problems with Aten CS1784, plugged to Logitech G15 and old Microsoft Intellimouse Optical, when using Raspbian. Works like a charm.
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by ronaldcole » Sun Jan 27, 2013 5:26 am
I tried an iogear gcs62hu, which is a 2-port hdmi/usb kvm switch and just couldn't get the hdmi to pass through. I tried both the basic setup and the advanced setup with a belkin f5u234v1 4-port usb hub... no luck. I'm going to try iogear tech support on Monday. Does anybody have any suggestions for a usb/hdmi kvm switch that is Pi friendly?
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by maxrealism » Sun Feb 10, 2013 8:47 pm
Before I get started this isn't for everyone!
The monitor I am using is an HD216D - this has HDMI & VGA inputs.
The RPi connects over HDMI. My gaming PC connects over VGA.
I bought this VGA KVM [url](http://www.ebay.co.uk/itm/290717435703)[/url] which is NOT suited for the RPi, but I wanted to share my success with the forum.

This KVM has 3 USB inputs (Keyboard / Mouse / Printer). You have to supply your own USB A to B connector cables. I have connected my keyboard and mouse to the KVM and then my gaming PC to USB1 and the RPi to USB2 (VGA inputs and output remain unused). Windows 7 loads some drivers and asks for a reboot. The RPi just worked. This now allows me to switch the keyboard and mouse between the two easily, I just have to use the monitor's built in menu to change between the outputs and use the button on the KVM when I want to switch. I know this isn't what everyone is looking for, but I wanted to share this for anyone in a similar situation to me - one monitor, keyboard, mouse (and no spare space for dedicated peripherals). You just have to use what is available to you.
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by ronaldcole » Sun Jun 23, 2013 7:06 am
Ok, I finally returned to my iogear gcs62hu, which is a 2-port hdmi/usb kvm switch, determined to get it to work for me. I achieved success. What I had to do:

1. I'm running Raspbian, so I had to edit /boot/config.txt and uncomment "hdmi_force_hotplug=1". Then the RPi and the switch would pass hdmi to my monitor.

2. Configured the gcs62hu in it's Advanced configuration: plugged the keyboard into the switch's keyboard port and plugged a Belkin powered usb hub (F5U234) into the switch's mouse port and plugged the mouse into port 1 on the hub. Then the keyboard was working for me.

3. Disabled mouse emulation on the switch by typing [Scroll Lock] [Scroll Lock] [m] [Enter].

It's actually a nice little switch, now that it's working as it should.
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