[sane-devel] Re: HP 7450C - Error trying to scan in powersave
Erik P. Olsen
Tue, 14 Sep 2004 00:25:11 +0200
Have you had a chance to take a look on this problem?
Erik P. Olsen
On Sun, 2004-09-05 at 17:56, Erik P. Olsen wrote:
> Hi again,
> On Tue, 2004-08-31 at 00:17, Ren=C3=A9 Rebe wrote:
> > Hi,
> > Erik P. Olsen wrote:
> > > OK, I'll do this additional test, but I fear wait_4_light() will wa=
> > > forever. As I see it the scanner performs correctly after reboot, t=
> > It should not. It is executed before _every_ scan. So it works at lea=
> > after the initial warmup after powering the scanner and booting the=20
> > workstation. When we have no other bug somewehere (my hope) it should=
> > work just fine - just wait a bit longer. And since it worked for me h=
> > with a HP 5370 and 7400 it should wait just a bit longer for your one=
> I promised a debug listing of the situation with an extended timeout
> setting. However, in order to have a reference I wanted to perform a
> correct scan done after a reboot. You'll find this listing attached. Th=
> disturbing thing is that this time the error occurred at the very
> I have come to the point now where I no longer see a trend in the error=
> I'll have to take back what I thought was happening. What is left is
> that sometime when the scanner in not heated up it'l start the scan
> prematurely and something like 60-70% through the scan it will stop wit=
> an ear-splitting noise which makes me stop the scanner by pulling the
> I therefore see no need to extend the timeout value. The problem must b=
> something else.
> Please let me know if you need more documentation. Perhaps you'll still
> want the debug listing of the extended timeout period :-)
> > > after the lamp has cooled off and no new reboot performed then the
> > > disaster happens. It's like a reset is missing. I'll test if this
> > I have no documentation how to reset the scanner "officially" and=20
> > currently the backend has no code for this.
> > > assumption is correct, but it takes some time because the lamp shou=
> > > have ample time to cool off and unfortunately I have very little ti=
> > > now. I'll see if I can squeeze in the time for the test though.
> > Do not bother to hury, I have enough to do anyway ...
> > Have fun,
> > Ren=C3=A9