KVM switch has stopped working with Update 4

mpiva: Posts: 35; Joined: Sun Jul 03, 2011 10:05 pm

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Post by mpiva » Sat Dec 24, 2011 7:36 am

I just installed Update 4. It installed with no problems, but when my Sam460ex restarted, my mouse and keyboard wouldn't work. Upon further investigation, I discovered it's actually my KVM switch that Update 4 doesn't like. My IOGEAR KVM switch with Logitech Wireless keyboard/mouse worked perfectly on Update 2; it sort of worked on Update 3 (if I disabled EHCI, which I needed to do anyway to get the wireless keyboard/mouse to work at all), and it doesn't work at all on Update 4 (but at least my wireless keyboard/mouse finally work with EHCI on but only if plugged directly into a USB port).

I've tried plugging my wireless keyboard/mouse as well as a regular wired keyboard into my KVM switch. Either way, it seems to recognize the KVM switch as a "HUB" but not anything that gets plugged into it. It just says the attachment failed.

djrikki: Posts: 138; Joined: Fri Jun 17, 2011 10:21 pm; Location: Grimsby, Lincolnshire, UK; Contact:
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Re: KVM switch has stopped working with Update 4

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Post by djrikki » Sat Dec 24, 2011 3:11 pm

In the Update 4 installation guide it says that OHCI has been disabled on SAM 460s due to a silicon bug. Perhaps that is relevant to your circumstance?

ChrisH: Beta Tester; Posts: 920; Joined: Mon Dec 20, 2010 9:09 pm; Contact:
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Re: KVM switch has stopped working with Update 4

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Post by ChrisH » Tue Dec 27, 2011 12:44 am

OS4's USB seems to be a bit "picky" about hubs (esp Update 3), at least on the Sam440, but I never had it not working at all (I have a KVM too). Hopefully some beta-tester has a Sam460, and so can test USB hubs.

mpiva: Posts: 35; Joined: Sun Jul 03, 2011 10:05 pm

Re: KVM switch has stopped working with Update 4

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Post by mpiva » Sat Jan 14, 2012 6:15 am

I'm looking at replacing my IOGEAR KVM switch now that Update 4 has rendered it useless. Does anyone have any experience with the DLINK KVM 222 on an AmigaOS4.1.4 system?

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Re: KVM switch has stopped working with Update 4

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Post by chris » Sat Jan 14, 2012 12:23 pm

ChrisH wrote:OS4's USB seems to be a bit "picky" about hubs (esp Update 3)

Update 4 is no better in my experience. I have to keep un/re-plugging my keyboard to get it and the inbuilt hub + devices to work. After a while it just stops. Sometimes it only works for a matter of seconds.

Sometimes the keybaord works but nothing attached to it. Often it's the other way round. I've just got the situation now that the mouse attached to the back is refusing to work for more than a couple of seconds, no matter how much reconnecting I do of it and the keyboard.

Here is the usb.log in case it helps:

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