[ATrpms-devel] Re: Pentium 4 HT

[Paulo Cavalcanti]

>>Recently, I realized that whenever I shut down in XP, removed and
>>reinserted the power cable, the machine started for a second and
>>stopped. Then I had to press the power button.  This is the normal
>>behaviour.
>>
>>However, when I shut down in linux, removed and reinserted the power
>>cable, the machine started without pressing the power buton. This
>>caused some problems that are not important here.
>
>Isn't that a pure BIOS setting? Perhaps this is hardware related?

I thought too. But with this mobo, it is not. I always set in the bios
STAY OFF on power failure. When using dual boot, acpi guarantees
a clean shutdown. Also, without acpi the smp kernel does not recognize
two processors, bu just one.

Anyway, it suffices to load only a single module: buttons.


>Then I booted using the new kernel. Everything seemed to be goot until I
>tryed to reboot.
>The screen became black and the computer froze completely. Then I rebooted
>  using the same version,
>
>Please upgrade to the latest nvidia drivers and make sure they are
>matching their version. Use nvidia-grpahics-switch to make sure all is
>in line.

I installed 6629 and everything is fine until now.
I think my hardware is OK. But dual channel is really a pain on the neck.
I use 4 sticks of 512 MB, and it was very hard to get two matched pairs
approaved by memtest86. To be able to use the smp kernel without
problem I had to raise the memory latencies in the BIOS, from 3 3 3 to 3 4 
4.
Doing that the tranfer rate of the two pair of sticks dropped from 2480 MB/s 
to 23?? MB/s.
Using just one pair the transfer is just 2274 MB/s, and everything also 
works fine with
memory defaults (3 3 3). Without dual channel (only one stick) the transfer 
is just 16?? MB/s.
Therefore, there is an increase of almost 50% in the transfer rate if one 
uses all of the 4 memory slots.
But I do recommend using just a single pair. It is safer, and the system 
will be more stable.

/Paulo Roma.