Ged, See my responses below
--- Ged Haywood <[EMAIL PROTECTED]> wrote: > Hi there, > > On Mon, 11 Nov 2002, P B wrote: > > > Are there any time functions or code that look at > time > > of day in any of the USB code? > [snip] > > It works fine at night, but not during the day. > > 1. Might be optical problems (semiconductors can be > very light sensitive). > Is it darker at night? Or do you switch on a > strong lamp? The computers are located all right next to each other in a shaded corner of the room. I'm sure there is a difference from night to day, but I don't think it's all that significant. Besides, all the electronic components are encased in either the PC cases or teh plast enclosure of the KVM. There is not enough sunligh reaching them to increase the temp through radiant heat transfer. > > > I'll often try it at night and it works fine. The > next morning when > > I start up my computers, it doesn't work. That > night, it wil work again! Last night, the Linux machine in question was wrking fine. This morning, it's not working again. > > 2. Maybe things need time to finish initializing. > Have you tried leaving the computers switched on > all the time? The problem is immediately apparent at boot time, when the local filesystems are finished mounting, either the ligh on my optical mouse lights up, or it doesn't. for the sake of testing, I do leave the machine on for a while after booting, but there's no difference. > Might be thermal problems (semiconductors can be > very heat sensitive, > power supplies and current drain etc. can be > particularly sensitive). > Maybe they need to get a little cooler. > Or warmer, I dunno. This is one of the few theories I have left - the KVM itself starts working differently after being on all day. I'm going to try booting the problematic Linux machine throughout the day today, while leaving the KVM on to see what happens. > Is it cooler at night? Or do you turn on the > heater? The room temp is pretty constant this time year. If the heat does switch on, the computer are on the opposite side of the room from the heater, so they are not subjected to any temp. extremes. I'd say the extremes in this room are less then 10 degrees F ( approx. 5 deg C). > > > I've tried changing the time in my BIOS, but > hasn't turned anything up. > > 3. I don't think that's a very good idea, > especially with Linux, and even > more especially with Linux on a network... Don't worry - this is one of my spare home systems that I use for experimentation. Completely harmless. > > And of course > > 3. You might be right - it might be the time. But > I can't believe it. > 4. There might be another explanation. That's the > most likely I think. I doubt there'd be any time dependence in this code, too, but I cant't hink of anything else at the moment, either. > > HTH > > 73, > Ged. > Prentice __________________________________________________ Do you Yahoo!? U2 on LAUNCH - Exclusive greatest hits videos http://launch.yahoo.com/u2 ------------------------------------------------------- This sf.net email is sponsored by: To learn the basics of securing your web site with SSL, click here to get a FREE TRIAL of a Thawte Server Certificate: http://www.gothawte.com/rd522.html _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
