Re: [PLUG] Intrusion detection on desktop
On Sat, Jun 7, 2014 at 9:10 PM, Neal nsed...@gmail.com wrote: On Sat, Jun 7, 2014 at 1:40 PM, Denis Heidtmann denis.heidtm...@gmail.com wrote: Galen suggested measuring the current through the intrusion jumper might help illuminate the random halts. I have measured that current as best I could. It appears to be about 0.1uA, the least count of my Fluke 87. I calculate that the CR2032 should last 250 years at this current, so I do not know why it is set so low. 10 uA would be too high, yielding only 2.5 years battery life. The battery drain is 0.1uA or the intrusion detect jumper is 0.1uA? The latter. That comes from the battery when the computer is has no line power. I would expect the battery current to be a lot closer to 10uA, but only with the power supply AC cord unplugged or hard-switched off if your power supply has a master switch on the back of it. With no AC, what does the 10 uA go to? The RTC and the BIOS memory plus anything else? So this means that I should be checking the battery every couple of years. (Unlike most on this list, I power off my machine when no one is using it, which is a significant part of the time.) With the computer running the battery current should be ~zero, and the battery lasts whatever its shelf life is, probably ten years. Agreed. NealS -Denis ___ PLUG mailing list PLUG@lists.pdxlinux.org http://lists.pdxlinux.org/mailman/listinfo/plug
Re: [PLUG] Intrusion detection on desktop
On Sun, Jun 8, 2014 at 8:00 AM, Denis Heidtmann denis.heidtm...@gmail.com wrote: With no AC, what does the 10 uA go to? The RTC and the BIOS memory plus anything else? That and the intrusion detect is all that I'm aware of. NealS ___ PLUG mailing list PLUG@lists.pdxlinux.org http://lists.pdxlinux.org/mailman/listinfo/plug
Re: [PLUG] Intrusion detection on desktop
Even when off ATX power supply's still deliver 5v stand-by power. I can't speak to how your computer uses it's battery or the standby power; and for all I know you might be turning off a power strip removing power to the power supply completely. That being said as long as the computer is plugged into the wall there is no reason for the CMOS battery to drain. It's my experience that the CMOS battery lasts 2 to 3 years; I leave my computers plugged in and off most of the time. YMMV. :-) - Sy On June 8, 2014 2:05:37 PM PDT, Neal nsed...@gmail.com wrote: On Sun, Jun 8, 2014 at 8:00 AM, Denis Heidtmann denis.heidtm...@gmail.com wrote: With no AC, what does the 10 uA go to? The RTC and the BIOS memory plus anything else? That and the intrusion detect is all that I'm aware of. NealS ___ PLUG mailing list PLUG@lists.pdxlinux.org http://lists.pdxlinux.org/mailman/listinfo/plug -- Sent from my Android device with K-9 Mail. Please excuse my brevity. ___ PLUG mailing list PLUG@lists.pdxlinux.org http://lists.pdxlinux.org/mailman/listinfo/plug
Re: [PLUG] Intrusion detection on desktop
On Sun, Jun 8, 2014 at 2:45 PM, Josiah Luscher s...@josiahluscher.com wrote: Even when off ATX power supply's still deliver 5v stand-by power. I can't speak to how your computer uses it's battery or the standby power; and for all I know you might be turning off a power strip removing power to the power supply completely. That being said as long as the computer is plugged into the wall there is no reason for the CMOS battery to drain. Well, I do use a power strip which removes all power. And the switch on the PS does the same thing. There is an LED on the MB indicating when 5V stand-by power is available, and that light is off when the switch is off. I would make a power measurement of the usage when on standby but my son has borrowed my Kill-a-watt. -Denis It's my experience that the CMOS battery lasts 2 to 3 years; I leave my computers plugged in and off most of the time. YMMV. :-) - Sy On June 8, 2014 2:05:37 PM PDT, Neal nsed...@gmail.com wrote: On Sun, Jun 8, 2014 at 8:00 AM, Denis Heidtmann denis.heidtm...@gmail.com wrote: With no AC, what does the 10 uA go to? The RTC and the BIOS memory plus anything else? That and the intrusion detect is all that I'm aware of. NealS ___ PLUG mailing list PLUG@lists.pdxlinux.org http://lists.pdxlinux.org/mailman/listinfo/plug -- Sent from my Android device with K-9 Mail. Please excuse my brevity. ___ PLUG mailing list PLUG@lists.pdxlinux.org http://lists.pdxlinux.org/mailman/listinfo/plug ___ PLUG mailing list PLUG@lists.pdxlinux.org http://lists.pdxlinux.org/mailman/listinfo/plug
Re: [PLUG] Intrusion detection on desktop
Forgive me if I'm being draft and stating the obvious. :-) -Sy On June 8, 2014 2:45:36 PM PDT, Josiah Luscher s...@josiahluscher.com wrote: Even when off ATX power supply's still deliver 5v stand-by power. I can't speak to how your computer uses it's battery or the standby power; and for all I know you might be turning off a power strip removing power to the power supply completely. That being said as long as the computer is plugged into the wall there is no reason for the CMOS battery to drain. It's my experience that the CMOS battery lasts 2 to 3 years; I leave my computers plugged in and off most of the time. YMMV. :-) - Sy On June 8, 2014 2:05:37 PM PDT, Neal nsed...@gmail.com wrote: On Sun, Jun 8, 2014 at 8:00 AM, Denis Heidtmann denis.heidtm...@gmail.com wrote: With no AC, what does the 10 uA go to? The RTC and the BIOS memory plus anything else? That and the intrusion detect is all that I'm aware of. NealS ___ PLUG mailing list PLUG@lists.pdxlinux.org http://lists.pdxlinux.org/mailman/listinfo/plug -- Sent from my Android device with K-9 Mail. Please excuse my brevity. ___ PLUG mailing list PLUG@lists.pdxlinux.org http://lists.pdxlinux.org/mailman/listinfo/plug -- Sent from my Android device with K-9 Mail. Please excuse my brevity. ___ PLUG mailing list PLUG@lists.pdxlinux.org http://lists.pdxlinux.org/mailman/listinfo/plug
Re: [PLUG] Intrusion detection on desktop
On Sat, Jun 7, 2014 at 1:40 PM, Denis Heidtmann denis.heidtm...@gmail.com wrote: I had posted earlier that random chassis intrusion halts during boot prompted me to change the CMOS battery. A mysterious failure to start, solved by the passage of time, occurred before I got the battery out. That mystery remains. The battery has been replaced. I am hoping for no more intrusion halts. Galen suggested measuring the current through the intrusion jumper might help illuminate the random halts. I have measured that current as best I could. It appears to be about 0.1uA, the least count of my Fluke 87. I calculate that the CR2032 should last 250 years at this current, so I do not know why it is set so low. 10 uA would be too high, yielding only 2.5 years battery life. Thursday night I was asked what my system was. The MB is an ASUS M3N78-VM put into service June 2009. The CPU is an Athalon X2 4850e 2.5 Ghz. I have 2G RAM and a SATA 500G HD. Is this as outdated as some of Thursday night quizzers thought it might be? It's newer than my motherboard :) What is your Bios version? The Bios for this board seems to have been updated many times, although I can't tell if any of the reasons apply to your problem. http://www.asus.com/Motherboards/M3N78VM/HelpDesk_Download/ Bill ___ PLUG mailing list PLUG@lists.pdxlinux.org http://lists.pdxlinux.org/mailman/listinfo/plug
Re: [PLUG] Intrusion detection on desktop
Hi Denis, I just caught up on the previous thread. Here are the things I would encourage you to consider looking into if you continue to have problems. Yes many of these were already mentioned, but hopefully I'm providing a few new tips: - Flakey PSU. Definitely the source of a lot of problems. In the past I've been able to determine this sometimes by looking my BIOS diagnostic screens and see the volt meter readings for each component of power. Often you'll see things like 5V and next to it 4.93V which is the reading from the PSU. I've seen PSUs give output that's clearly outside of tolerance before. Your system will still work, but weird things can happen. - Bad Caps. Your mobo is fairly old so it is certainly possible that some of your capacitors are going bad. A while back a whole bunch of motherboards and other components were shipped with faulty capacitors. See: http://en.wikipedia.org/wiki/Capacitor_plague Check your capacitors for any bulging. If you see it, then the cap is going bad. My brother discovered this in his monitor a while back when it went out on him. He was able to repair the monitor by simply replacing the caps. - Run a memtest. Just to make sure there's no memory seating problems or a variety of power problems, try running memtest86+ on it or something similar. Hope that helps, tim On Sat, Jun 07, 2014 at 01:40:38PM -0700, Denis Heidtmann wrote: I had posted earlier that random chassis intrusion halts during boot prompted me to change the CMOS battery. A mysterious failure to start, solved by the passage of time, occurred before I got the battery out. That mystery remains. The battery has been replaced. I am hoping for no more intrusion halts. Galen suggested measuring the current through the intrusion jumper might help illuminate the random halts. I have measured that current as best I could. It appears to be about 0.1uA, the least count of my Fluke 87. I calculate that the CR2032 should last 250 years at this current, so I do not know why it is set so low. 10 uA would be too high, yielding only 2.5 years battery life. Thursday night I was asked what my system was. The MB is an ASUS M3N78-VM put into service June 2009. The CPU is an Athalon X2 4850e 2.5 Ghz. I have 2G RAM and a SATA 500G HD. Is this as outdated as some of Thursday night quizzers thought it might be? -Denis ___ PLUG mailing list PLUG@lists.pdxlinux.org http://lists.pdxlinux.org/mailman/listinfo/plug ___ PLUG mailing list PLUG@lists.pdxlinux.org http://lists.pdxlinux.org/mailman/listinfo/plug
Re: [PLUG] Intrusion detection on desktop
On Sat, Jun 7, 2014 at 1:40 PM, Denis Heidtmann denis.heidtm...@gmail.com wrote: Galen suggested measuring the current through the intrusion jumper might help illuminate the random halts. I have measured that current as best I could. It appears to be about 0.1uA, the least count of my Fluke 87. I calculate that the CR2032 should last 250 years at this current, so I do not know why it is set so low. 10 uA would be too high, yielding only 2.5 years battery life. The battery drain is 0.1uA or the intrusion detect jumper is 0.1uA? I would expect the battery current to be a lot closer to 10uA, but only with the power supply AC cord unplugged or hard-switched off if your power supply has a master switch on the back of it. With the computer running the battery current should be ~zero, and the battery lasts whatever its shelf life is, probably ten years. NealS ___ PLUG mailing list PLUG@lists.pdxlinux.org http://lists.pdxlinux.org/mailman/listinfo/plug
