Messages in this thread | | | Date | Wed, 13 Mar 2002 09:03:09 -0600 (CST) | From | Oliver Xymoron <> | Subject | Re: 2.5.5-dj2: psmouse.c: Lost synchronization |
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On Wed, 13 Mar 2002, Samuel Hocevar wrote:
> Hi, I have a Thinkpad T20 and experienced the same problem as you > with the 2.5.x series, and I'm trying to understand what's causing it. > Are you using the preemptive kernel patch?
Yes, and now that I think about it, I was probably running with HZ=1024 too. Switched back to 2.4 due to problems with my wireless.
> The following simple change worked for me, would you maybe have time > to test it and tell me whether it works? > > --- drivers/input/mouse/psmouse.c.orig Wed Mar 13 05:04:26 2002 > +++ drivers/input/mouse/psmouse.c Wed Mar 13 05:04:30 2002 > @@ -200,7 +200,7 @@ > return; > } > > - if (psmouse->pktcnt && jiffies - psmouse->last > 2) { > + if (psmouse->pktcnt && jiffies - psmouse->last > 10) { > printk(KERN_WARNING "psmouse.c: Lost synchronization, throwing %d bytes away.\n", psmouse->pktcnt); > psmouse->pktcnt = 0; > }
Egads. I never even bothered to look up the code generating that message. That should be HZ/50 or HZ/10.
Tempting to propose making HZ=HZ*100 and doing jiffies+=100 to ferret out any code that makes assumptions about what the units of HZ are.
-- "Love the dolphins," she advised him. "Write by W.A.S.T.E.."
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