[rescue] SUN Ultra2 + 501-2480?

[Lionel Peterson]

> From: "Gutschner, Marc" <marc.gutschner at itandfactory.com>
> Date: 2004/10/11 Mon AM 09:10:42 GMT
> To: <rescue at sunhelp.org>
> Subject: [rescue] SUN Ultra2 + 501-2480?
> 
> Hi!
>  
> I've recently "ePayed" a couple of 64MB DIMMs to give my Ultra2 a little more Oomph. But it appears that my machine doesn't like these modules :-( As far as I can tell from the barcode sticker the modules are "genuine SUN parts".

These should work in an Ultra 2 - if not, there is a problem with either the RAM or the slots you are installing them in...
  
> If I plug them in and switch the machine on, it displays the expected amount of total RAM (768MB) in the banner at the top of the display and says "Initializing memory". It "twiddles" around for a couple of seconds and then seems to stall, i.e. the message disappears and the cursors sits solid where the 'ok' prompt should appear.

Odd, what slots are you putting them in? The larger DIMMs should go in the first banks, then smaller DIMMs in the remaining slots...
  
> Currently I've installed 256MB across 8 32MB modules. With this configuration the machine runs rock solid, albeit a little "huffing and puffing". So I've added the "new" modules in the remaining 2 banks - but "no go" :-( Replacing those 8 modules with 4 of the larger ones also exhibits above symptoms. Thus I think I can rule out a broken DIMM socket. May a firmware update be needed? At the moment it has OBP 3.19 and the latest one is 3.25...

OBP shouldn't have an effect on this one way or the other, but you may want to upgrade it just to be current/up to date...
  
> I've consulted the systems handbook before buying the memory and it says that this module type should be supported. And in the release notes for the 3.25 firmware I've not found anything wrt/ to support for 64MB DIMMs...
>  
> MTIA for any hints and clues,

Hope there's something useful above - if not, the DIMMs may be bad and you should look for a financial remedy from the seller... (They weren't listed AS-IS, were they?)