Bug 5449

Summary:	bug in psmouse.c "lost synchronization"
Product:	Drivers	Reporter:	Bashar MC (bashar)
Component:	Input Devices	Assignee:	Dmitry Torokhov (dmitry.torokhov)
Status:	REJECTED INSUFFICIENT_DATA
Severity:	high	CC:	bunk, marcel, protasnb, vojtech
Priority:	P2
Hardware:	i386
OS:	Linux
Kernel Version:	2.6.13.4	Subsystem:
Regression:	Yes	Bisected commit-id:

Description Bashar MC 2005-10-15 09:03:36 UTC

Most recent kernel where this bug did not occur: 2.4.26
Distribution: Slackware 10.0
Hardware Environment: Barton 2500+ and MS intellimouse optical USB 5 button mouse
Software Environment: KDE 3.4.3
Problem Description: at dmesg it shows:
psmouse.c: Mouse at isa0060/serio1/input0 lost synchronization, throwing 2 bytes
away.
and cursor starts to auto click everything on my desktop
i had this problem when i decide to use 2.6.x instead of 2.4.x
i first used 2.6.12.3 and same problem and now with 2.6.13.4 the same
i tried all possible protocols in X including "ExplorerPS/2" but no effect
i also tried with gpm or without gpm but the problem persists

Steps to reproduce:
press any key or combination of keys on keyboard the same time as you move very
fast your mouse
Ex. when i press CTRL`C or CTRL`V to copy paste something and i move my cursor
the same time this happens

Comment 1 Marco Puglisi 2007-03-28 06:46:09 UTC

I have a very similar problem.

Mouse become crazy and click everywhere in the screen.

But it is not important if I'm using keyboard in the meantime or not, neighter
it is important if I'm using mouse slowly or fast..

I'm using Ubuntu Edgy 6.10 but I have the same problem with Feisty Fawn beta
(with the last kernel).

In my kern.log there are a lot of this kind of rows:
Mar 28 14:49:37 attorianzo-desktop kernel: [17179662.100000] psmouse.c: Wheel
Mouse at isa0060/serio1/input0 lost synchronization, throwing 2 bytes away.


I'm using a logitech mouse

Comment 2 Bashar MC 2007-03-31 03:00:26 UTC

In my case, after i searched all the net and forums, i think the problem was
from my keyboad driver(standard keyboard with the default slack drivers), the
kbd driver.
Somehow it conflicts with the mouse.


the solution problably is to install the latest kbd driver, or look into
xorg.conf and see what driver are you using.

I never tried this though because at the time i found this solution slackware 11
was released and i have done a fresh install of the new slack and after upgraded
to the latest kernel no problems appeared with my mouse .

Comment 3 Natalie Protasevich 2007-06-22 22:37:14 UTC

Can everyone affected please test with the latest kernel as well.
Thanks.

Comment 4 Adrian Bunk 2007-09-09 12:06:43 UTC

Please reopen this bug if it's still present with kernel 2.6.22.