What is ICH and MCH

[Red Squirrel]

I just got my new motherboard for my server and installed it. One thing I noticed is the voltage supplied by the fan plugs is VERY low, I have a big 750watt PSU so that can't be the problem. Needless to say, I'm overheating and I'll have to rewire the fans to use a regular molex connector.

I noticed in bios that ICH shows uip as 76 and MCH as 69. What are those? I noticed cpu is not listed, only cpu threshold. It's an intel DG33TL board.

 

[gophins72]

it's your chipset:
http://www.intel.com/Assets/Im.../G33_Block_Diagram.jpg

 

[Red Squirrel]

Ouch... good thing I turned that thing off then. I'm rewiring the fans atm, those motherboard connects provide crap voltage. Sure its good to have a quiet system, but not if it catches on fire after 30 minutes of heavy use...

 

[Red Squirrel]

Still running super hot... is it normal for these to run near 77 degrees?

 

[QuixoticOne]

Some systems provide VARIABLE voltage to the fans based on the actual temperature that is sensed. Disable all adaptive fan control e.g. "Q-Fan" or other similar systems and configure the fans to run at maximum RPM if you want the best cooling. If your voltages are STILL substantially less than 12V then, yeah, you likely have a problem.

 

[Red Squirrel]

was reading reviews on the board and thats pretty much the problem, it's variable but does not really work well. like it waits till the system is pretty much cooked before it actually revs the voltage, and never fully does it.

But I have to worse luck, running into all sorts of other problems now. Getting stuck at /sbin/loader ACPI: PCI Root Bridge [PCO0] and other stuff..... I should of just bought a dell server, this thing has costed me like 2 grand so far. This is my second board too.... already RMAed one.

 

[QuixoticOne]

I'm sorry to hear that you're having such problems.
I think that if you fight with them enough and perhaps wait 3 months or so for hypothetical improvements in the kernel / drivers usually you can overcome OS loading / running problems as long as the hardware you have is properly functioning.

When last I set up Centos 5 I found it to be much more "picky" about supporting certain hardware than the current Fedora version was. Given the difference in ages and relative featuresets of the included kernel and device drivers this isn't altogether surprising.

Perhaps you should just check to see if Fedora 9, Fedora 10 Beta (in one week future), OpenBSD, or FreeBSD 7, OpenSUSE 11, boot and run stably on your hardware. If any of those major OS versions do install and work well then at least it is a good sign that perhaps with some effort and patience the other OS versions can be made to work as well.

Often BIOS settings changes and BIOS version updates can help resolve a lot of LINUX boot time errors.

 

[Red Squirrel]

Yeah downloading FC9 right now hoping it works. Only issue I have with fedora is they move so fast, that it does not take long for the yum repositories to be pulled off. I have FC5 on my existing server and I only set that up a few years ago, now they're already at 9 and 5 is long unsupported. But guess I can still install stuff from RPM I tend to do a base image when everything works anyway, so not a huge issue.

 

[postmortemIA]

Originally posted by: RedSquirrel
I just got my new motherboard for my server and installed it. One thing I noticed is the voltage supplied by the fan plugs is VERY low, I have a big 750watt PSU so that can't be the problem. Needless to say, I'm overheating and I'll have to rewire the fans to use a regular molex connector.

I noticed in bios that ICH shows uip as 76 and MCH as 69. What are those? I noticed cpu is not listed, only cpu threshold. It's an intel DG33TL board.

those are normal temperatures for intel boards - do not worry.

 

[Red Squirrel]

Good to know.