On Mon, 13 Nov 2017 12:47:37 +1100, Robert William Hutton wrote: > On 13/11/17 12:31, Michael wrote: >> I ran the ram test a couple of days ago.... no problems >> reported. That it was the power supply was the first thing I >> thought of but then I wondered why it would only happen when >> running darktable. How would I check that? What are the proper >> levels? > > At boot, you have to press some kind of button to get into your BIOS > or EFI menu. Depending on computer brand it might be ESC, F1, F2, > F12 or something like that. If you're lucky it'll tell you what > button to press when you boot your computer, and it should be listed > in your motherboard manual. Then poke around in the menu until you > find the right "status" area or similar where it lists the power > supply voltages. In general, it'll list what voltage it expects, > and then the actual voltage it's getting, something like: > > 12V: 12.02 > 5V: 4.96 > 3.3V: 3.24
The power supply might be able to deliver the rated voltage at idle or under light load, when the current demand is low, but if you're blasting the CPU and GPU hard, the demands on it might cause the voltage to drop sufficiently below tolerance that something isn't getting the voltage it needs. > You just have to compare, and make sure they're not too far off. I > just did a google and came up with this: > > https://www.lifewire.com/power-supply-voltage-tolerances-2624583 > > Voltage Rail Tolerance Minimum Voltage Maximum Voltage > +3.3VDC ± 5% +3.135 VDC +3.465 VDC > +5VDC ± 5% +4.750 VDC +5.250 VDC > +5VSB ± 5% +4.750 VDC +5.250 VDC > -5VDC (if used) ± 10% -4.500 VDC -5.500 VDC > +12VDC ± 5% +11.400 VDC +12.600 VDC > -12VDC ± 10% -10.800 VDC -13.200 VDC -- Robert Krawitz <[email protected]> *** MIT Engineers A Proud Tradition http://mitathletics.com *** Member of the League for Programming Freedom -- http://ProgFree.org Project lead for Gutenprint -- http://gimp-print.sourceforge.net "Linux doesn't dictate how I work, I dictate how Linux works." --Eric Crampton ____________________________________________________________________________ darktable user mailing list to unsubscribe send a mail to [email protected]
