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From: "Szymon Acedański" <accek@poczta.gazeta.pl>
To: ruben@puettmann.net
Cc: linux-kernel@vger.kernel.org
Subject: Re: Synaptics losing sync
Date: Sun, 2 Nov 2003 10:48:33 +0100	[thread overview]
Message-ID: <200311021048.33698.accek@poczta.gazeta.pl> (raw)
In-Reply-To: <E1AG4NH-0006xZ-00@baloney.puettmann.net>

Hi!

On Saturday 01 November 2003 23:37, Ruben Puettmann wrote:
> > ...
> > Synaptics driver lost sync at 1st byte
> > Synaptics driver resynced.
> > Losing too many ticks!
> > TSC cannot be used as a timesource. (Are you running with SpeedStep?)
> > Falling back to a sane timesource.
> > Synaptics driver lost sync at 1st byte
> > ...
> >

I can observe the same "Synaptics lost sync" messages on Acer TravelMate 242XC 
with ACPI enabled (without APM even compiled) on 2.6.0-test[0-9]. But I 
silently ignore these messages - touchpad works ok. I use an USB mouse, but 
messages appear even without it plugged.

"Losing too many ticks" exists when I'm running with cpufreq [p4_clockmod] and 
clock=tsc (default). This is because of rescaling TSC pitch by cpufreq, I 
think. If I specify in bootloader clock=hpet, problem disappears. [Am I doing 
right?]

I can provide more information if somebody is interested.

Cheers
Szymon

  reply	other threads:[~2003-11-02  9:48 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <N7gI.1K3.9@gated-at.bofh.it>
2003-11-01 22:37 ` Synaptics losing sync Ruben Puettmann
2003-11-02  9:48   ` Szymon Acedański [this message]
2003-11-03 13:25     ` Ruben Puettmann
2003-11-03 17:13       ` Szymon Acedański
2003-11-01 16:51 Ricardo Galli
2003-11-01 21:04 ` Peter Osterlund
2003-11-01 22:47   ` Ricardo Galli

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