Hi, i have a regular ole USB mouse and got a USB hub to expand the number of ports i have. I connected my USB mouse to the hub which worked in Windows but when i booted up linux the mouse did not work. If i plug the mouse in directly then it works again but i would like to figure out how to make the mouse work using a hub but am not quite sure where to start, any pointers/advice would be greatly appreciated!
Cheers,
-Gaiko
You could start gathering information by using the lsusb utility. Use it first with a direct connected mouse to see how the device is identified. Then try with the hub to see if it is seen by the system.
I have seen the same type of behaviour some years ago when using a hardware KVM switch. I think the problem concerns X’s detection of the mouse and the mouse type being falsely detected…but I never really did get to the bottom of it, because it seemed more sensible not to use the KVM switch for the mouse, if it was going to be problematic.
Le 25/04/2010 13:46, markone a écrit :
>
> I have seen the same type of behaviour some years ago when using a
> hardware KVM switch. I think the problem concerns X’s detection of the
> mouse and the mouse type being falsely detected…but I never really did
> get to the bottom of it, because it seemed more sensible -not- to use
> the KVM switch for the mouse, if it was going to be problematic.
>
>
usb hub?
these hubs are unreliable, sometime works, sometime don’t (not only
for mouses).
jdd
This from the techrepublic forum:
USB keyboards and mice should never be run from a hub. the systems test for primary use devices during POST and leave it to the OS to establish or configure hubs afterward. So if you use the device through a hub and the OS has hub related problems it will leave you without primary OS control (namely your keyboard and mouse). See KVM switches and related problems.
I use the starview 2 port USB KMV SV231USB switch. Connected to it are two computers, one running Windows XP and the other Suse 11.2.
I do not use a mouse through the switch, relying instead on two separate mice. The keyboard and monitor, however, are connected to the KMV switch and work reliably when I switch back and forth from Windows to Linux.
When the mouse and the keyboard are connected through the switch, they become unreliable when I switch between operating systems and occasionally Linux fails to recognise either the keyboard or the the mouse. Oddly, there is no such problem when the mouse is connected directly to the Linux computer leaving the keyboard and monitor connected through the switch.
Mark
My point exactly! The USB-KVM switch that you mention mimics direct access (hubless) for the keyboard, captures Video also in a primary mode, but they say the mouse is simulated through a hub simulation. With the keyboard, the device can maintain a static level at both PC’s and when a key is pressed react by passing the values through to the appropriate PC. With the mouse, which may have intermittency in it’s scroll wheel, buttons, and optic/ball form positioning there are just too many variants. At which point does the device decide there was valid activity to pass.