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Old 05-09-2010, 06:07 PM
Karl Larsen
 
Default 4 GiB RAM Blues

On 05/09/2010 11:35 AM, Amichai Rotman wrote:
> Hi All,
>
> I recently upgraded my RAM from 2x1GiB to 2x2GiB of RAM.
>
> How do I make sure (K)ubuntu recognizes the whole amount?
>
> My Setup:
>
> An HP DX2300 Desktop running Kubuntu 8.04.3 LTS.
>
> I'd like to upgrade to 10.04 LTS, so I have tried both 32Bit and 64
> Bit versions of the Kubuntu 10.04.
>
> 32Bit: Once loaded, I opened a Konsole window and typed 'top' - gave
> my ~3500 total Kb total memory
> 64Bit: Same test gave my ~3200 Kb total memory...
>
> I don't get it.... How can the 64Bit show less?
>
> I told the computer store guy I'll check if it works on my machine and
> give it back in case it doesn't.
>
> BTW, the motherboard supports 667MHz maximum and the new DIMMs are
> 800MHz, but it does show a total of 4096MB running @ 667MHz.
>
> Can anyone help me make sure (K)ubuntu uses 4GiB RAM?
>
> Thanks!
>
> .:================================================ ====:.
>
> Amichai Rotman
>
> Registered Linux User#: 201192 [http://counter.li.org/]
> Registered Ubuntu User #12851 [http://ubuntucounter.geekosophical.net]
>
> ------------------------------------------------------------------------------------------------------------
> .:================================================ ====:.
top - 12:04:10 up 19:53, 2 users, load average: 0.40, 0.31, 0.23
Tasks: 151 total, 1 running, 150 sleeping, 0 stopped, 0 zombie
Cpu(s): 1.3%us, 0.3%sy, 0.0%ni, 98.3%id, 0.0%wa, 0.0%hi, 0.0%si,
0.0%st
Mem: 5867892k total, 1764760k used, 4103132k free, 216000k buffers
Swap: 1959920k total, 0k used, 1959920k free, 859692k cached

This is on 10.04 Desktop 64bit and it shows my entire 6 GB of RAM.
It appears that each 2GB physical ram is slightly less than 2GB...hi


73 Karl



--

Karl F. Larsen, AKA K5DI
Linux User
#450462 http://counter.li.org.
Key ID = 3951B48D



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Old 05-10-2010, 11:21 AM
Amichai Rotman
 
Default 4 GiB RAM Blues

Hi Jonathan,
I saw nothing like that explicitly, except the DVMT memory reseve for video. I have an add-in PCIx card, how can I set this to 0?
I have version 1.14 of the BIOS. Here is a link to my machines details:


http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=vn&taskId=120&prodSeriesId =3352967&prodTypeId=12454&objectID=c01056911


Thanks!
.:================================================ ====:.

Amichai Rotman

Registered Linux User#: 201192 [http://counter.li.org/]


Registered Ubuntu User #12851 [http://ubuntucounter.geekosophical.net]

------------------------------------------------------------------------------------------------------------


.:================================================ ====:.



On Sun, May 9, 2010 at 20:58, Jonathan Hudson <jh+ubuntu@daria.co.uk> wrote:


On Sun, 9 May 2010 20:35:51 +0300, Amichai Rotman wrote:





>64Bit: Same test gave my ~3200 Kb total memory...

>

>I don't get it.... How can the 64Bit show less?

>



For 64 bit OS:



It's a BIOS setting, something to do with "memory remapping" or

"memory holes", to do woth how the BIOS maps system or video ROMs or

memory into the address space for 32bit OS (the BIOS cannot know what

you're going to boot). Have a hunt around the BIOS setup, it's a pretty

common problem and the solution is BIOS dependent.



-jh







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Old 05-10-2010, 04:40 PM
Jonathan Hudson
 
Default 4 GiB RAM Blues

On Mon, 10 May 2010 14:21:36 +0300, Amichai Rotman wrote:

>Hi Jonathan,
>
>I saw nothing like that explicitly, except the DVMT memory reseve for video.
>I have an add-in PCIx card, how can I set this to 0?
>
>I have version 1.14 of the BIOS. Here is a link to my machines details:
>
>http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=vn&taskId=120&prodSeriesId =3352967&prodTypeId=12454&objectID=c01056911
>

Not sure now I can help further, as this is BIOS specfic (e.g. on my
only 64bit box, with a 4 year old ASRock 939Dual-SATA2 mobo and AMI
BIOS, there's an option under Advanced/CPU Configuration => Memory Hole
which has to be set to "enabled" to see 4GB (vice 3.2GB) RAM in 64bit
Linux. This is not mentioned in the Mobo Manual and required a BIOS
upgrade a couple of years ago to work.

-jonathan


>Thanks!
>
>.:=============================================== =====:.
>
>Amichai Rotman
>
>Registered Linux User#: 201192 [http://counter.li.org/]
>Registered Ubuntu User #12851 [http://ubuntucounter.geekosophical.net]
>
>------------------------------------------------------------------------------------------------------------
>.:=============================================== =====:.
>
>
>On Sun, May 9, 2010 at 20:58, Jonathan Hudson
><jh+ubuntu@daria.co.uk<jh%2Bubuntu@daria.co.uk>
>> wrote:
>
>> On Sun, 9 May 2010 20:35:51 +0300, Amichai Rotman wrote:
>>
>>
>> >64Bit: Same test gave my ~3200 Kb total memory...
>> >
>> >I don't get it.... How can the 64Bit show less?
>> >
>>
>> For 64 bit OS:
>>
>> It's a BIOS setting, something to do with "memory remapping" or
>> "memory holes", to do woth how the BIOS maps system or video ROMs or
>> memory into the address space for 32bit OS (the BIOS cannot know what
>> you're going to boot). Have a hunt around the BIOS setup, it's a pretty
>> common problem and the solution is BIOS dependent.
>>
>> -jh
>>
>>
>>
>> --
>> ubuntu-users mailing list
>> ubuntu-users@lists.ubuntu.com
>> Modify settings or unsubscribe at:
>> https://lists.ubuntu.com/mailman/listinfo/ubuntu-users
>>
>



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Old 05-10-2010, 07:11 PM
"Karl F. Larsen"
 
Default 4 GiB RAM Blues

Jonathan Hudson wrote:
> On Mon, 10 May 2010 14:21:36 +0300, Amichai Rotman wrote:
>
>> Hi Jonathan,
>>
>> I saw nothing like that explicitly, except the DVMT memory reseve for video.
>> I have an add-in PCIx card, how can I set this to 0?
>>
>> I have version 1.14 of the BIOS. Here is a link to my machines details:
>>
>> http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=vn&taskId=120&prodSeriesId =3352967&prodTypeId=12454&objectID=c01056911
>>
>
> Not sure now I can help further, as this is BIOS specfic (e.g. on my
> only 64bit box, with a 4 year old ASRock 939Dual-SATA2 mobo and AMI
> BIOS, there's an option under Advanced/CPU Configuration => Memory Hole
> which has to be set to "enabled" to see 4GB (vice 3.2GB) RAM in 64bit
> Linux. This is not mentioned in the Mobo Manual and required a BIOS
> upgrade a couple of years ago to work.
>
> -jonathan
>
>
>> Thanks!
>>
>> .:================================================ ====:.
>>
>> Amichai Rotman
>>
>> Registered Linux User#: 201192 [http://counter.li.org/]
>> Registered Ubuntu User #12851 [http://ubuntucounter.geekosophical.net]
>>
>> ------------------------------------------------------------------------------------------------------------
>> .:================================================ ====:.
>>
>>
>> On Sun, May 9, 2010 at 20:58, Jonathan Hudson
>> <jh+ubuntu@daria.co.uk<jh%2Bubuntu@daria.co.uk>
>>> wrote:
>>> On Sun, 9 May 2010 20:35:51 +0300, Amichai Rotman wrote:
>>>
>>>
>>>> 64Bit: Same test gave my ~3200 Kb total memory...
>>>>
>>>> I don't get it.... How can the 64Bit show less?
>>>>
>>> For 64 bit OS:
>>>
>>> It's a BIOS setting, something to do with "memory remapping" or
>>> "memory holes", to do woth how the BIOS maps system or video ROMs or
>>> memory into the address space for 32bit OS (the BIOS cannot know what
>>> you're going to boot). Have a hunt around the BIOS setup, it's a pretty
>>> common problem and the solution is BIOS dependent.
>>>
>>> -jh
>>>
>>>
>>>
>>> --
>>> ubuntu-users mailing list
>>> ubuntu-users@lists.ubuntu.com
>>> Modify settings or unsubscribe at:
>>> https://lists.ubuntu.com/mailman/listinfo/ubuntu-users
>>>
>
>
>
I have 6 GIG of ram shown on 10.04, but only see 3gig on
8.04. So what you see may be a function of version.

73 Karl


--

Karl F. Larsen, AKA K5DI
Linux User
#450462 http://counter.li.org.
Key ID = 3951B48D


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