> > I recently moved and now experience occassional (non reproducible)
> > internal compiler errors with gcc. I never had problems with this
> > machine at my old address. I see that lm_sensors reports that certain
> > voltages are too high:
> > as99127f-i2c-0-2d
> > Adapter: SMBus I801 adapter at e800
> > VCore 1: +1.82 V (min = +1.66 V, max = +1.82 V)
> > VCore 2: +1.82 V (min = +1.66 V, max = +1.82 V)
> > +3.3V: +3.52 V (min = +3.14 V, max = +3.46 V) ALARM
> > +5V: +5.00 V (min = +4.73 V, max = +5.24 V)
> > +12V: +11.55 V (min = +10.82 V, max = +13.19 V)
> > -12V: -11.89 V (min = -13.22 V, max = -10.74 V)
> > -5V: -5.03 V (min = -5.25 V, max = -4.74 V)
> > fan1: 4326 RPM (min = 0 RPM, div = 2)
> > fan2: 0 RPM (min = 0 RPM, div = 2)
> > fan3: 0 RPM (min = 0 RPM, div = 2)
> > M/B Temp: +33C (high = +105C, hyst = +0C)
> > CPU Temp: +20.5C (high = +100C, hyst = +92C)
> > temp3: -31.5C (high = +122C, hyst = +121C)
> > vid: +1.750 V (VRM Version 8.2)
> > alarms:
> > beep_enable:
> > Sound alarm enabled
> > VCore 1 & 2 were previously too high as well (both > 1.82V & < 1.83V).
> > I've checked the BIOS and the VCore setting is set to it's minimum
> > (1.75V). Most of the BIOS reported values correspond with lm_sensors,
> > except for the CPU temperature which the BIOS reports as 46 C. But the
> > 3.3V seems too high. The BIOS value is the same as lm_sensors, although
> > the BIOS doesn't include a high water mark, just the value.
> > I can't fiddle with the 3.3V setting in the BIOS, so I now wonder what
> > to do? The building where the machine resides is an old building from
> > the 19th century, so could this have to do with the electrical setup of
> > the building?
> > Thanks
> Power supplies are designed to handle a wide range of AC voltages so it's
> doubtful if the building has anything to do with your problems. Big spikes
> could be a problem so I suppose inadequate wiring combined with a lot of
> noisy motors from refrigerators and elevators might cause you trouble but
> not the kind of problem that you are seeing.
> Does your power supply have any adjustment knobs or screws on it? If it
> does then one of the adjustment screws might have turned during the move.
> If you can do a manual adjustment then that should be the first thing you
> do. If you can't you might need a new power supply.
I checked the back (visible from outside) and the surfaces of the power
supply on the inside, but there's no adjustments available. I know some
supplies have a 110-220 switch, but this one apparently has nothing
adjustable (except for on/off).
My old address had grounded electrical sockets, while this one doesn't.
I pulled a (grounded) extension cable from a grounded kitchen socket
but there's no difference with grounded sockets.
I do notice occassional flickering of my (CRT) screen, which I never
experienced in my old house (5 years of operation with this machine &
monitor). My old house used to be habited by an electrician before me.
He had redone most of the wiring when I came to live there.
I even lowered the clock settings for the memory (from 100 to 66), but
the voltage remains the same. Now the BIOS doesn't report the voltage
as an error, likely because it lacks any kind of error reporting. I'm
assuming lm_sensors' high-water/voltage mark (+3.46V) is correct, since
I really can't think of any other reason why I now get (non
reproducible) internal compiler errors.
All this inspecting has shown me something peculiar. /proc/cpuinfo says
I have an 817.416Mhz cpu, while my BIOS is set to 800Mhz. The BIOS has
a 816Mhz option which I'm going to select now. (Never realised I was an
underclocker till now).