Messages in this thread | | | Date | Tue, 30 Oct 2007 12:53:17 -0400 | From | "Dmitry Torokhov" <> | Subject | Re: PATCH: PR Input Devives/2082: PS/2 mouse out of sync after switching with KVM switch |
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Hi,
On 10/30/07, H.J. Lu <hjl@lucon.org> wrote: > The bug report is at > > http://bugzilla.kernel.org/show_bug.cgi?id=2082 > > Problem Description: When switching to another machine with a KVM > switch and back, the mouse is out of control, with X.Org. To recover, > I have to unplug the mouse cable and plug it back. > > Steps to reproduce: Have a wheel mouse connected and X.Org. Keyboard, > Mouse and Video are connected to a KVM switch. Switch to another > machine and back. You have lost the usage of wheel on mouse. > > This patch for 2.6.23 tries to reconnect the mouse after KVM switch. > It doesn't completely solve the problem. Mouse still got a few random > bytes after KVM switch.
Have you tried psmouse.resync_time=5 option?
Any change you coudl do
echo 1 > /sys/module/i8042/parameters/debug
before switrching KVM back and forth and send me dmesg?
> But it recovers with kernel message: > > psmouse.c: Wheel Mouse at isa0060/serio1/input0 lost synchronization, issuing reconnect request. > > instead of > > psmouse.c: Wheel Mouse at isa0060/serio1/input0 lost synchronization, throwing 3 bytes away. > > and never recovering from it. >
I am hesitant queuing reconnect immediately - if the byte was delayed because embedded controller was busy doing something else and we start querying mouse at the wrong time we might lose mouse altogether.
-- Dmitry - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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