Re: I want all my 4GB!!!

[Lennart Sorensen]

On Fri, Jul 24, 2009 at 12:44:18AM +0400, James Brown wrote:
> Yes, you are right.
> The technical support of the Acer corporation have informed me that it
> is impossible to get all my memory with Intel 945GM Chipset.
> I think they (the Acer company team) are frauds becouse I paid my money
> for 2 modules of 2GB RAM based on their information in the manual of my
> laptop. Instead doing it I could get 1 such module and install it with
> preinstalled module of 1GB for using not more 3 GB.

But then it would have run slower, and you would have gotten probably
100 to 200MB less memory.  Right now you get 3.2GB out of 4GB, using
dual channel.  The video is probably taking about 200MB of that leaving
3GB for you.  If you only had 3GB, you would only get single channel,
making the memory half the speed, and you would get 2.8GB for you and
200MB for video.

I know that going from one DIMM to two DIMMs on my wifes laptop with
the same chipset increased the video performance by over 50% because it
went to dual channel mode as far as I can tell.  It became much faster
than simply adding more ram could account for.

So while you may loose 800MB of your 4GB, you still get the performance
benefits of the dual matched DIMMs.

-- 
Len Sorensen


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Re: I want all my 4GB!!!

[James Brown]

Stefan Monnier wrote:
>> I don't have time to check your machine's specs, but many chipsets of
>> a few years ago only recognized a maximum of 3GB (even though they
>> correctly work with 4GB installed).  My Thinkpad T60 is among them.
>> In this case, there's nothing you can do about it, short of getting
>> another machine.
>> 
>
> Looks like it, indeed:
> http://www.ec.kingston.com/ecom/configurator_new/modelsinfo.asp?SysID=33507&mfr=Acer&model=TravelMate+3040+Series+3043%2C+3044&search_type=&root=us&LinkBack=http%3A%2F%2Fwww.kingston.com&Sys=33507-Acer-TravelMate+3040+Series+3043%2C+3044&distributor=0&submit1=Search
>
>
> Stefan
>
>
>   
Yes, you are right.
The technical support of the Acer corporation have informed me that it
is impossible to get all my memory with Intel 945GM Chipset.
I think they (the Acer company team) are frauds becouse I paid my money
for 2 modules of 2GB RAM based on their information in the manual of my
laptop. Instead doing it I could get 1 such module and install it with
preinstalled module of 1GB for using not more 3 GB.


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Re: I want all my 4GB!!!

[Lennart Sorensen]

On Wed, Jul 22, 2009 at 04:32:12PM -0400, Stefan Monnier wrote:
> Looks like it, indeed:
> http://www.ec.kingston.com/ecom/configurator_new/modelsinfo.asp?SysID=33507&mfr=Acer&model=TravelMate+3040+Series+3043%2C+3044&search_type=&root=us&LinkBack=http%3A%2F%2Fwww.kingston.com&Sys=33507-Acer-TravelMate+3040+Series+3043%2C+3044&distributor=0&submit1=Search

Well it confirms it being 945GM, and the 945GM is absolutely not capable
of memory remapping, so there is no way to get more of the memory to be
available.  The benefit of 4GB ram simply is that you get dual channel
access to the 3.something GB you see as far as I can tell.

-- 
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Re: I want all my 4GB!!!

[Stefan Monnier]

> I don't have time to check your machine's specs, but many chipsets of
> a few years ago only recognized a maximum of 3GB (even though they
> correctly work with 4GB installed).  My Thinkpad T60 is among them.
> In this case, there's nothing you can do about it, short of getting
> another machine.

Looks like it, indeed:
http://www.ec.kingston.com/ecom/configurator_new/modelsinfo.asp?SysID=33507&mfr=Acer&model=TravelMate+3040+Series+3043%2C+3044&search_type=&root=us&LinkBack=http%3A%2F%2Fwww.kingston.com&Sys=33507-Acer-TravelMate+3040+Series+3043%2C+3044&distributor=0&submit1=Search


Stefan


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Re: I want all my 4GB!!!

[Lennart Sorensen]

On Wed, Jul 22, 2009 at 06:51:22PM +0400, James Brown wrote:
> Do you think is it possible to get all 4GB even the BIOS doesn't "see"
> all installed memory?
> P.S. I have send request to the technical support of the Acer
> corporation concirning the matter of my BIOS (becouse I upgraided my
> BIOS from the latest version on their site) and waiting their answer.

No probably not.  In that case it is almost certain the chipset is not
setup to remap memory (if it is even capable of it).

Vista could also just read the DMI info, detect what actual memory is
installed and report that, rather than the amount of memory actually
available.

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Re: I want all my 4GB!!!

[James Brown]

Lennart Sorensen wrote:
> On Tue, Jul 21, 2009 at 10:30:09PM +0100, Clive Menzies wrote:
>   
>> This is probably irrelevant but it may help someone searching the
>> archives.  I bought a Thinkpad X61 with 4GB a while back.  At first it
>> would recognise more than 3gb on either windows or squeeze.  I checked
>> the BIOS which was registering 4Gb.  I had many other things to do and
>> left it for a while.  The windows deficiency must have been fixed in the
>> Vista (shudder) SP1 update but the Debian shortfall continued and I've
>> been following this thread.
>>
>> I use aptitude and found the following kernel package:
>> linux-image-2.6.26-2-686-bigmem
>>
>> Installed it, rebooted and hey presto,cat /proc/meminfo gives:
>>
>> MemTotal:  4074284 kB
>>
>> Thanks. You guys are so great.
>> 
>
> Well if the BIOS does remap memory above 4GB, then on x86 you do need
> a PAE kernel to get the rest of memory, which would be the 686-bigmem
> kernel.  On x86-64 you always get all the memory in that case.
>
> I believe vista SP1 did in fact add PAE support, so that would make
> sense there too.
>
>   

Do you think is it possible to get all 4GB even the BIOS doesn't "see"
all installed memory?
P.S. I have send request to the technical support of the Acer
corporation concirning the matter of my BIOS (becouse I upgraided my
BIOS from the latest version on their site) and waiting their answer.


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Re: I want all my 4GB!!!

[Lennart Sorensen]

On Wed, Jul 22, 2009 at 12:23:13PM +0400, James Brown wrote:
> ~$ dmesg | grep BIOS
> [0.00] BIOS-provided physical RAM map:
> [0.00]  BIOS-e820:  - 0009f800 (usable)
> [0.00]  BIOS-e820: 0009f800 - 000a (reserved)
> [0.00]  BIOS-e820: 000dc000 - 0010 (reserved)
> [0.00]  BIOS-e820: 0010 - bf68 (usable)
> [0.00]  BIOS-e820: bf68 - bf70 (ACPI NVS)
> [0.00]  BIOS-e820: bf70 - c000 (reserved)
> [0.00]  BIOS-e820: e000 - f000 (reserved)
> [0.00]  BIOS-e820: fec0 - fec1 (reserved)
> [0.00]  BIOS-e820: fed0 - fed00400 (reserved)
> [0.00]  BIOS-e820: fed14000 - fed1a000 (reserved)
> [0.00]  BIOS-e820: fed1c000 - fed9 (reserved)
> [0.00]  BIOS-e820: fee0 - fee01000 (reserved)
> [0.00]  BIOS-e820: ff00 - 0001 (reserved)

So the last address reported by your bios is 4GB (0001)
at the end of a reserved area.  The last address of usable memory is
bf68 which is 3211264000 bytes, so your system does not
remap memory and hence anything covered by PCI devices is simply lost
and can not be used at all.  The hardware is either simply not capable of
remapping memory (this is true for many intel chipsets) or the BIOS didn't
make the chipset do remapping (sometimes there is a bios option for it).

> [0.00] ACPI: BIOS bug: multiple APIC/MADT found, using 0
> [0.00]   early res: 0 [0-fff] BIOS data page
> [0.00]   early res: 4 [9f800-f] BIOS reserved
> [0.004000] Calgary: detecting Calgary via BIOS EBDA area
> [0.264998] ACPI: BIOS _OSI(Linux) query ignored via DMI

So unless your bios has an option for memory remapping, there is no way
to make the rest of memory useable, and you will only get about 3.2GB
out of your 4GB.  Of course if the video steals some of that 3.2GB,
you get whatever is left.

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Re: I want all my 4GB!!!

[Lennart Sorensen]

On Tue, Jul 21, 2009 at 10:30:09PM +0100, Clive Menzies wrote:
> This is probably irrelevant but it may help someone searching the
> archives.  I bought a Thinkpad X61 with 4GB a while back.  At first it
> would recognise more than 3gb on either windows or squeeze.  I checked
> the BIOS which was registering 4Gb.  I had many other things to do and
> left it for a while.  The windows deficiency must have been fixed in the
> Vista (shudder) SP1 update but the Debian shortfall continued and I've
> been following this thread.
> 
> I use aptitude and found the following kernel package:
> linux-image-2.6.26-2-686-bigmem
> 
> Installed it, rebooted and hey presto,cat /proc/meminfo gives:
> 
> MemTotal:  4074284 kB
> 
> Thanks. You guys are so great.

Well if the BIOS does remap memory above 4GB, then on x86 you do need
a PAE kernel to get the rest of memory, which would be the 686-bigmem
kernel.  On x86-64 you always get all the memory in that case.

I believe vista SP1 did in fact add PAE support, so that would make
sense there too.

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Re: I want all my 4GB!!!

[Kurt Roeckx]

On Wed, Jul 22, 2009 at 12:23:13PM +0400, James Brown wrote:
> ~$ dmesg | grep BIOS
> [0.00] BIOS-provided physical RAM map:
> [0.00]  BIOS-e820:  - 0009f800 (usable)

That is 653312 bytes = 638 KB

> [0.00]  BIOS-e820: 0009f800 - 000a (reserved)
> [0.00]  BIOS-e820: 000dc000 - 0010 (reserved)
> [0.00]  BIOS-e820: 0010 - bf68 (usable)

That is 3211231232 bytes = 3062 MB = 2.99 GB

> [0.00]  BIOS-e820: bf68 - bf70 (ACPI NVS)
> [0.00]  BIOS-e820: bf70 - c000 (reserved)
> [0.00]  BIOS-e820: e000 - f000 (reserved)

That's 268435456 bytes = 256 MB, which is not usable.

> [0.00]  BIOS-e820: fec0 - fec1 (reserved)
> [0.00]  BIOS-e820: fed0 - fed00400 (reserved)
> [0.00]  BIOS-e820: fed14000 - fed1a000 (reserved)
> [0.00]  BIOS-e820: fed1c000 - fed9 (reserved)
> [0.00]  BIOS-e820: fee0 - fee01000 (reserved)
> [0.00]  BIOS-e820: ff00 - 0001 (reserved)
> [0.00] ACPI: BIOS bug: multiple APIC/MADT found, using 0
> [0.00]   early res: 0 [0-fff] BIOS data page
> [0.00]   early res: 4 [9f800-f] BIOS reserved
> [0.004000] Calgary: detecting Calgary via BIOS EBDA area
> [0.264998] ACPI: BIOS _OSI(Linux) query ignored via DMI

So the BIOS atleast tells you you have 3 GB of usable memory.
There might be some option that changes it so that more is
available, and that it's now using some compatibility option
for things that do not support more than 32 bit.  I suggest
you look for options in your bios that might be related to that.


Kurt


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Re: I want all my 4GB!!!

[James Brown]

Lennart Sorensen wrote:
> On Tue, Jul 21, 2009 at 12:08:58AM +0400, James Brown wrote:
>   
>> I have a laptop Acer TravelMate 3043WTMi under Lenny AMD64 with 4GD RAM.
>> But the system "see" only 3GB:
>> dmesg |grep Memory
>> [0.004000] Memory: 3081184k/3136000k available (2225k kernel code,
>> 54428k reserved, 1080k data, 392k init)
>> $ cat /proc/meminfo
>> MemTotal:  3088108 kB
>>
>> How can I get all my 4GB memory?
>> 
>
> Could you get the output of dmesg?  It would tell us exactly what the
> BIOS reports for memory.  Many older chipsets did not support remapping of
> memory, so whatever area of the memory space PCI requried was simply lost.
>
> Something like this is the key part:
> BIOS-provided physical RAM map:
>  BIOS-e820:  - 0009ac00 (usable)
>  BIOS-e820: 0009ac00 - 000a (reserved)
>  BIOS-e820: 000e - 0010 (reserved)
>  BIOS-e820: 0010 - bffc7440 (usable)
>  BIOS-e820: bffc7440 - bffceac0 (ACPI data)
>  BIOS-e820: bffceac0 - c000 (reserved)
>  BIOS-e820: e000 - f000 (reserved)
>  BIOS-e820: fec0 - 0001 (reserved)
>  BIOS-e820: 0001 - 00024000 (usable)
>
>   
~$ dmesg | grep BIOS
[0.00] BIOS-provided physical RAM map:
[0.00]  BIOS-e820:  - 0009f800 (usable)
[0.00]  BIOS-e820: 0009f800 - 000a (reserved)
[0.00]  BIOS-e820: 000dc000 - 0010 (reserved)
[0.00]  BIOS-e820: 0010 - bf68 (usable)
[0.00]  BIOS-e820: bf68 - bf70 (ACPI NVS)
[0.00]  BIOS-e820: bf70 - c000 (reserved)
[0.00]  BIOS-e820: e000 - f000 (reserved)
[0.00]  BIOS-e820: fec0 - fec1 (reserved)
[0.00]  BIOS-e820: fed0 - fed00400 (reserved)
[0.00]  BIOS-e820: fed14000 - fed1a000 (reserved)
[0.00]  BIOS-e820: fed1c000 - fed9 (reserved)
[0.00]  BIOS-e820: fee0 - fee01000 (reserved)
[0.00]  BIOS-e820: ff00 - 0001 (reserved)
[0.00] ACPI: BIOS bug: multiple APIC/MADT found, using 0
[0.00]   early res: 0 [0-fff] BIOS data page
[0.00]   early res: 4 [9f800-f] BIOS reserved
[0.004000] Calgary: detecting Calgary via BIOS EBDA area
[0.264998] ACPI: BIOS _OSI(Linux) query ignored via DMI


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Re: I want all my 4GB!!!

[Clive Menzies]

Clive Menzies wrote:
>
>
> Michelle Konzack wrote:
>> Am 2009-07-21 01:03:08, schrieb James Brown:
>>   
>>> There is 3071MB RAM I can see in my BIOS.
>>> 
>>^^  ^^^
>>
>> IF THE BIOS does only find 3 GByte, then tere is  something  wrong  with
>> your Laptop or the BIOS and this has nothing to do with Debian.
>>   
> This is probably irrelevant but it may help someone searching the
> archives.  I bought a Thinkpad X61 with 4GB a while back.  At first it
> would'NT recognise more than 3gb on either windows or squeeze.  I
> checked the BIOS which was registering 4Gb.  I had many other things
> to do and left it for a while.  The windows deficiency must have been
> fixed in the Vista (shudder) SP1 update but the Debian shortfall
> continued and I've been following this thread.
>
> I use aptitude and found the following kernel package:
> linux-image-2.6.26-2-686-bigmem
>
> Installed it, rebooted and hey presto,cat /proc/meminfo gives:
>
> MemTotal:  4074284 kB
>
> Thanks. You guys are so great.
>
> Regards
>
> Clive

Sorry I messed up.  It only saw 3Gb before the kernel upgrade

My bad

Re: I want all my 4GB!!!

[Michelle Konzack]

Am 2009-07-21 22:30:09, schrieb Clive Menzies:
> This is probably irrelevant but it may help someone searching the
> archives.  I bought a Thinkpad X61 with 4GB a while back.  At first it
> would recognise more than 3gb on either windows or squeeze.  I checked
> the BIOS which was registering 4Gb.  I had many other things to do and
> left it for a while.  The windows deficiency must have been fixed in the
> Vista (shudder) SP1 update but the Debian shortfall continued and I've
> been following this thread.
> 
> I use aptitude and found the following kernel package:
> linux-image-2.6.26-2-686-bigmem

There is NO "bigmem" Kernel for amd64  :-D

with an amd64 Kernel I can address  without  any  problems  64 GByte  of
memory from scratch, Which I have installed on  one  of  my  bigger  Sun
together with 2 Opteron Quad-Core CPU's.

Under SPARC I get 256 GByte or memory  :-)

> Installed it, rebooted and hey presto,cat /proc/meminfo gives:
> MemTotal:  4074284 kB

Yes because you are using i386

Thanks, Greetings and nice Day/Evening
Michelle Konzack
Systemadministrator
Tamay Dogan Network
Debian GNU/Linux Consultant

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Re: I want all my 4GB!!!

[Vasilios Karaklioumis]

Clive Menzies wrote:



Michelle Konzack wrote:

Am 2009-07-21 01:03:08, schrieb James Brown:
  

There is 3071MB RAM I can see in my BIOS.


   ^^  ^^^

IF THE BIOS does only find 3 GByte, then tere is  something  wrong  with
your Laptop or the BIOS and this has nothing to do with Debian.
  
This is probably irrelevant but it may help someone searching the 
archives.  I bought a Thinkpad X61 with 4GB a while back.  At first it 
would recognise more than 3gb on either windows or squeeze.  I checked 
the BIOS which was registering 4Gb.  I had many other things to do and 
left it for a while.  The windows deficiency must have been fixed in 
the Vista (shudder) SP1 update but the Debian shortfall continued and 
I've been following this thread.


I use aptitude and found the following kernel package: 
linux-image-2.6.26-2-686-bigmem


Installed it, rebooted and hey presto,cat /proc/meminfo gives:

MemTotal:  4074284 kB

Thanks. You guys are so great.

Regards

Clive
No it hasnt.MS just "fixed" it to show how much memory you have 
installed and not how much you can allocate.Too many complaints by users 
probably...If both windows and debian cant allocate the full amount you 
need to change the memory hole/memory remapping settings in bios.



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Re: I want all my 4GB!!!

[Clive Menzies]

Michelle Konzack wrote:
> Am 2009-07-21 01:03:08, schrieb James Brown:
>   
>> There is 3071MB RAM I can see in my BIOS.
>> 
>^^  ^^^
>
> IF THE BIOS does only find 3 GByte, then tere is  something  wrong  with
> your Laptop or the BIOS and this has nothing to do with Debian.
>   
This is probably irrelevant but it may help someone searching the
archives.  I bought a Thinkpad X61 with 4GB a while back.  At first it
would recognise more than 3gb on either windows or squeeze.  I checked
the BIOS which was registering 4Gb.  I had many other things to do and
left it for a while.  The windows deficiency must have been fixed in the
Vista (shudder) SP1 update but the Debian shortfall continued and I've
been following this thread.

I use aptitude and found the following kernel package:
linux-image-2.6.26-2-686-bigmem

Installed it, rebooted and hey presto,cat /proc/meminfo gives:

MemTotal:  4074284 kB

Thanks. You guys are so great.

Regards

Clive

Re: I want all my 4GB!!!

[Lennart Sorensen]

On Tue, Jul 21, 2009 at 08:20:56PM +0400, James Brown wrote:
> In the manual of my laptop was written that it was possible to upgrade
> its RAM to 4GB.

Sure, but being able to install 4GB doesn't mean it is able to make all
4GB available to the OS, just that installing 4GB of ram is possible.

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Re: I want all my 4GB!!!

[James Brown]

Thierry Chatelet wrote:
> On Monday 20 July 2009 22:08:58 James Brown wrote:
>   
>> I have a laptop Acer TravelMate 3043WTMi under Lenny AMD64 with 4GD RAM.
>> But the system "see" only 3GB:
>> dmesg |grep Memory
>> [0.004000] Memory: 3081184k/3136000k available (2225k kernel code,
>> 54428k reserved, 1080k data, 392k init)
>> $ cat /proc/meminfo
>> MemTotal:  3088108 kB
>>
>>
>> How can I get all my 4GB memory?
>> 
>
> Before looking into kernel option (all? recent kernel come by default with 
> bigmem enabled), I would look into the specs of the machine, ie: does it 
> support any memory speed with 4 Gb? I have seem thread in the past here 
> relating to this problem. And I know for sure on my aspire 5715z, this is the 
> case.
> Thierry
>
>
>   
In the manual of my laptop was written that it was possible to upgrade
its RAM to 4GB.


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Re: I want all my 4GB!!!

[Lennart Sorensen]

On Tue, Jul 21, 2009 at 12:08:58AM +0400, James Brown wrote:
> I have a laptop Acer TravelMate 3043WTMi under Lenny AMD64 with 4GD RAM.
> But the system "see" only 3GB:
> dmesg |grep Memory
> [0.004000] Memory: 3081184k/3136000k available (2225k kernel code,
> 54428k reserved, 1080k data, 392k init)
> $ cat /proc/meminfo
> MemTotal:  3088108 kB
> 
> How can I get all my 4GB memory?

Could you get the output of dmesg?  It would tell us exactly what the
BIOS reports for memory.  Many older chipsets did not support remapping of
memory, so whatever area of the memory space PCI requried was simply lost.

Something like this is the key part:
BIOS-provided physical RAM map:
 BIOS-e820:  - 0009ac00 (usable)
 BIOS-e820: 0009ac00 - 000a (reserved)
 BIOS-e820: 000e - 0010 (reserved)
 BIOS-e820: 0010 - bffc7440 (usable)
 BIOS-e820: bffc7440 - bffceac0 (ACPI data)
 BIOS-e820: bffceac0 - c000 (reserved)
 BIOS-e820: e000 - f000 (reserved)
 BIOS-e820: fec0 - 0001 (reserved)
 BIOS-e820: 0001 - 00024000 (usable)

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Re: I want all my 4GB!!!

[Bjørn Mork]

James Brown  writes:

> There is 3071MB RAM I can see in my BIOS.

I must be missing something, but let me ask the stupid question:  Why do
you think Linux should something else?


Bjørn


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Re: I want all my 4GB!!!

[Michelle Konzack]

Am 2009-07-21 03:10:14, schrieb James Brown:
> What are the kernel boot parameters?

mem=4G

or if G is not working

mem=4096M


Thanks, Greetings and nice Day/Evening
Michelle Konzack
Systemadministrator
Tamay Dogan Network
Debian GNU/Linux Consultant

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Re: I want all my 4GB!!!

[Michelle Konzack]

Am 2009-07-21 01:03:08, schrieb James Brown:
> There is 3071MB RAM I can see in my BIOS.
   ^^  ^^^

IF THE BIOS does only find 3 GByte, then tere is  something  wrong  with
your Laptop or the BIOS and this has nothing to do with Debian.

Thanks, Greetings and nice Day/Evening
Michelle Konzack
Systemadministrator
Tamay Dogan Network
Debian GNU/Linux Consultant

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Re: I want all my 4GB!!!

[Michelle Konzack]

Hi James,

Am 2009-07-21 00:08:58, schrieb James Brown:
> I have a laptop Acer TravelMate 3043WTMi under Lenny AMD64 with 4GD RAM.
> But the system "see" only 3GB:
> dmesg |grep Memory
> [0.004000] Memory: 3081184k/3136000k available (2225k kernel code,
> 54428k reserved, 1080k data, 392k init)
> $ cat /proc/meminfo
> MemTotal:  3088108 kB
> 
> 
> How can I get all my 4GB memory?

This sound not realy you are running amd64!
You have only this effect, if you run a ia32 Kernel.

Thanks, Greetings and nice Day/Evening
Michelle Konzack
Systemadministrator
Tamay Dogan Network
Debian GNU/Linux Consultant

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Re: I want all my 4GB!!!

[Stefan Monnier]

> I have a laptop Acer TravelMate 3043WTMi under Lenny AMD64 with 4GD RAM.
> But the system "see" only 3GB:
> dmesg |grep Memory
> [0.004000] Memory: 3081184k/3136000k available (2225k kernel code,
> 54428k reserved, 1080k data, 392k init)
> $ cat /proc/meminfo
> MemTotal:  3088108 kB


> How can I get all my 4GB memory?

I don't have time to check your machine's specs, but many chipsets of
a few years ago only recognized a maximum of 3GB (even though they
correctly work with 4GB installed).  My Thinkpad T60 is among them.
In this case, there's nothing you can do about it, short of getting
another machine.


Stefan


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Re: I want all my 4GB!!!

[Goswin von Brederlow]

tyler  writes:

> James Brown  writes:
>
>> I have a laptop Acer TravelMate 3043WTMi under Lenny AMD64 with 4GD RAM.
>> But the system "see" only 3GB:
>> dmesg |grep Memory
>> [0.004000] Memory: 3081184k/3136000k available (2225k kernel code,
>> 54428k reserved, 1080k data, 392k init)
>> $ cat /proc/meminfo
>> MemTotal:  3088108 kB
>>
>>
>> How can I get all my 4GB memory?
>
> I'm not sure how this works with AMD64, but with 32 bit systems the
> default kernel has a maximum amount of RAM it can recognize and use.
> When I increased the RAM on my thinkpad to 3GB, I had to switch to the
> 686 kernel to get it all recognized. I'm not sure how to investigate,
> but perhaps you need a different kernel or a kernel module? Just
> guessing.
>
> Tyler

On amd64 the limit is some million trillion billion gazillion bytes.
That isn't the problem.

MfG
Goswin


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Re: I want all my 4GB!!!

[Thierry Chatelet]

On Monday 20 July 2009 22:08:58 James Brown wrote:
> I have a laptop Acer TravelMate 3043WTMi under Lenny AMD64 with 4GD RAM.
> But the system "see" only 3GB:
> dmesg |grep Memory
> [0.004000] Memory: 3081184k/3136000k available (2225k kernel code,
> 54428k reserved, 1080k data, 392k init)
> $ cat /proc/meminfo
> MemTotal:  3088108 kB
>
>
> How can I get all my 4GB memory?

Before looking into kernel option (all? recent kernel come by default with 
bigmem enabled), I would look into the specs of the machine, ie: does it 
support any memory speed with 4 Gb? I have seem thread in the past here 
relating to this problem. And I know for sure on my aspire 5715z, this is the 
case.
Thierry


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Re: I want all my 4GB!!!

[tyler]

James Brown  writes:

> I have a laptop Acer TravelMate 3043WTMi under Lenny AMD64 with 4GD RAM.
> But the system "see" only 3GB:
> dmesg |grep Memory
> [0.004000] Memory: 3081184k/3136000k available (2225k kernel code,
> 54428k reserved, 1080k data, 392k init)
> $ cat /proc/meminfo
> MemTotal:  3088108 kB
>
>
> How can I get all my 4GB memory?

I'm not sure how this works with AMD64, but with 32 bit systems the
default kernel has a maximum amount of RAM it can recognize and use.
When I increased the RAM on my thinkpad to 3GB, I had to switch to the
686 kernel to get it all recognized. I'm not sure how to investigate,
but perhaps you need a different kernel or a kernel module? Just
guessing.

Tyler

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Re: I want all my 4GB!!!

[Goswin von Brederlow]

James Brown  writes:

> Victor Padro wrote:
>> On Mon, Jul 20, 2009 at 3:08 PM, James Brown wrote:
>>   
>>> I have a laptop Acer TravelMate 3043WTMi under Lenny AMD64 with 4GD RAM.
>>> But the system "see" only 3GB:
>>> dmesg |grep Memory
>>> [0.004000] Memory: 3081184k/3136000k available (2225k kernel code,
>>> 54428k reserved, 1080k data, 392k init)
>>> $ cat /proc/meminfo
>>> MemTotal:  3088108 kB
>>>
>>>
>>> How can I get all my 4GB memory?
>>>
>>>
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>>>
>>>
>>> 
>>
>> Did you realize that you might have memory shared for your video adapter?
>>
>>   
>
> Do you think that it maybe that the lost 1GB of my RAM use my videocard?
> And how did it work before upgrade my RAM, when I had 1GD at all?

Some memory is lost to the gfx board. Some is blocked to make room for
PCI devices. When you only have 1GB there where 3GB space left for PCI
so nothing had to be blocked.

Usualy the parts lost to PCI should be remapped to above 4GB. But not
every chipset can do that, esspecially those limited to 4GB. Or the
option is turned of in the bios.

My POV/ION330 board supports up to 8GB ram and I configured the gfx to
use only 32MB. Still I only see 3.5GB of my 4GB ram. I'm in the same
situation of wondering where my ram did go.

MfG
Goswin


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Re: I want all my 4GB!!!

[Bob Proulx]

James Brown wrote:
> Bob Proulx wrote:
> >   apt-get install memtest86+
>
> It see only 3GB, not 4GB.

I looked up the Acer TravelMate 3040 series and supposedly it has two
200-pin sodimm slots.  This is an obvious question but are you sure
your two slots both have a 2G dimm in them?  Is it possible that one
of them is only a 1G dimm?  I myself would be inclined to test each
dimm in each slot separately and make sure that each one is seen as 2G
by the system independently.  (Be careful for ESD damage when handling
the ram.)

Perhaps you have a bad dimm.  Perhaps you have a bad address pin on a
dimm slot.  If you find that one combination isn't producing a full 2G
then you have isolated a problem.  If both are 2G in both slots then
together the boot time BIOS ram power on self test should report 4G.
If not then I think this would be a BIOS problem.  You might need to
check your laptop's BIOS for updates to see if this is a problem with
an update.

Other than these things I have no further suggestions.  Good luck!

Bob


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Re: I want all my 4GB!!!

[James Brown]

Mark Allums wrote:
> Bob Proulx wrote:
>> James Brown wrote:
>>> Bob Proulx wrote:
 Hmm...  I recommend installing memtest86+ and then seeing how much
 memory it detects at boot time.

   apt-get install memtest86+

 This should automatically install a grub boot entry and be very easy
 to boot into afterward.  I am thinking it might only detect 3G too.
 In any case this would be a good independent test.
>>> I have installed this packege but I can  find neither a man-page of it
>>> nor the help information. How can I use it (I think that it works when
>>> system booting) and when (and how) can I see the results of this test?
>>
>> It is a boot time image.  Reboot and observe the grub boot menu.  Use
>> the cursor keys to move down to the memtest image.  Boot that image.
>>
>> Memtest86 will run forever until you stop it from running.  It is an
>> infinitely running test program.  It is very useful for testing
>> memory.  But here I was interested in how much memory it reported and
>> so you could stop it almost immediately after noting that information.
>>
>> Upstream package documentation mostly documenting building it is
>> available in /usr/share/doc/memtest86+/README*.
>>
>> Bob
>>
>>
>
> I'm posting the obvious, but:  Are you sure you have installed the
> amd64 distro?
>
> If so, then it may take some kernel boot parameters to see all of the
> memory, or you may need to check your BIOS settings.
>
> Mark Allums
>
>  
What are the kernel boot parameters?
P.S. I cannot change my BIOS memory settings, I tried do it earlier but
it was impossible.


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Re: I want all my 4GB!!!

[James Brown]

Bob Proulx wrote:
> James Brown wrote:
>   
>> Bob Proulx wrote:
>> 
>>> Hmm...  I recommend installing memtest86+ and then seeing how much
>>> memory it detects at boot time.
>>>
>>>   apt-get install memtest86+
>>>
>>> This should automatically install a grub boot entry and be very easy
>>> to boot into afterward.  I am thinking it might only detect 3G too.
>>> In any case this would be a good independent test.
>>>   
>> I have installed this packege but I can  find neither a man-page of it
>> nor the help information. How can I use it (I think that it works when
>> system booting) and when (and how) can I see the results of this test?
>> 
>
> It is a boot time image.  Reboot and observe the grub boot menu.  Use
> the cursor keys to move down to the memtest image.  Boot that image.
>
> Memtest86 will run forever until you stop it from running.  It is an
> infinitely running test program.  It is very useful for testing
> memory.  But here I was interested in how much memory it reported and
> so you could stop it almost immediately after noting that information.
>
> Upstream package documentation mostly documenting building it is
> available in /usr/share/doc/memtest86+/README*.
>
> Bob
>
>
>   
It see only 3GB, not 4GB.


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Re: I want all my 4GB!!!

[Mark Allums]

Bob Proulx wrote:

James Brown wrote:

Bob Proulx wrote:

Hmm...  I recommend installing memtest86+ and then seeing how much
memory it detects at boot time.

  apt-get install memtest86+

This should automatically install a grub boot entry and be very easy
to boot into afterward.  I am thinking it might only detect 3G too.
In any case this would be a good independent test.

I have installed this packege but I can  find neither a man-page of it
nor the help information. How can I use it (I think that it works when
system booting) and when (and how) can I see the results of this test?


It is a boot time image.  Reboot and observe the grub boot menu.  Use
the cursor keys to move down to the memtest image.  Boot that image.

Memtest86 will run forever until you stop it from running.  It is an
infinitely running test program.  It is very useful for testing
memory.  But here I was interested in how much memory it reported and
so you could stop it almost immediately after noting that information.

Upstream package documentation mostly documenting building it is
available in /usr/share/doc/memtest86+/README*.

Bob




I'm posting the obvious, but:  Are you sure you have installed the amd64 
distro?


If so, then it may take some kernel boot parameters to see all of the 
memory, or you may need to check your BIOS settings.


Mark Allums


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Re: I want all my 4GB!!!

[Bob Proulx]

James Brown wrote:
> Bob Proulx wrote:
> > Hmm...  I recommend installing memtest86+ and then seeing how much
> > memory it detects at boot time.
> >
> >   apt-get install memtest86+
> >
> > This should automatically install a grub boot entry and be very easy
> > to boot into afterward.  I am thinking it might only detect 3G too.
> > In any case this would be a good independent test.
>
> I have installed this packege but I can  find neither a man-page of it
> nor the help information. How can I use it (I think that it works when
> system booting) and when (and how) can I see the results of this test?

It is a boot time image.  Reboot and observe the grub boot menu.  Use
the cursor keys to move down to the memtest image.  Boot that image.

Memtest86 will run forever until you stop it from running.  It is an
infinitely running test program.  It is very useful for testing
memory.  But here I was interested in how much memory it reported and
so you could stop it almost immediately after noting that information.

Upstream package documentation mostly documenting building it is
available in /usr/share/doc/memtest86+/README*.

Bob


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Re: I want all my 4GB!!!

[James Brown]

Andrés Reyes Douglas wrote:
>
> hi,
> my Lenny  'uname -ra' is:
>
> Linux m0702deeareyesd 2.6.26-1-amd64 #1 SMP Fri Mar 13 17:46:45 UTC
> 2009 x86_64 GNU/Linux
>
> [0.004000] Memory: 3913828k/4849664k available (2226k kernel code,
> 137744k reserved, 1082k data, 392k init)
>
> I've 4Gb without sharing memory (video). Make sure that you aren't
> sharing memory for video.
>
> bye
>
> Andrés
>
> Quoting James Brown 
> gmail.com>:
>
> > Andrés Reyes Douglas wrote:
> >>
> >> Please send your:
> >>
> >> uname -ra
> >>
> >> Quoting James Brown :
> >>
> >> > I have a laptop Acer TravelMate 3043WTMi under Lenny AMD64 with
> 4GD RAM.
> >> > But the system "see" only 3GB:
> >> > dmesg |grep Memory
> >> > [0.004000] Memory: 3081184k/3136000k available (2225k kernel
> code,
> >> > 54428k reserved, 1080k data, 392k init)
> >> > $ cat /proc/meminfo
> >> > MemTotal:  3088108 kB
> >> >
> >> >
> >> > How can I get all my 4GB memory?
> >> >
> >> >
> >> > --
> >> > To UNSUBSCRIBE, email to debian-amd64-requ...@lists.debian.org
> >> > with a subject of "unsubscribe". Trouble? Contact
> >> listmas...@lists.debian.org
> >> >
> >> >
> >>
> >>
> >> __
> >> WebMail - Jaime Vargas Arquitectos Ltda.
> > ~$ uname -ra
> > Linux IGOR 2.6.26-2-amd64 #1 SMP Sun Jun 21 04:47:08 UTC 2009 x86_64
> > GNU/Linux
> >
> >
>
>
> __
> WebMail - Jaime Vargas Arquitectos Ltda.
Thanks, how I can test it?


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Re: I want all my 4GB!!!

[James Brown]

Bob Proulx wrote:
> James Brown wrote:
>   
>> I have a laptop Acer TravelMate 3043WTMi under Lenny AMD64 with 4GD RAM.
>> But the system "see" only 3GB:
>> dmesg |grep Memory
>> [0.004000] Memory: 3081184k/3136000k available (2225k kernel code, 
>> 54428k reserved, 1080k data, 392k init)
>> 
>
> Hmm...  I recommend installing memtest86+ and then seeing how much
> memory it detects at boot time.
>
>   apt-get install memtest86+
>
> This should automatically install a grub boot entry and be very easy
> to boot into afterward.  I am thinking it might only detect 3G too.
> In any case this would be a good independent test.
>
> I wish you hadn't cross-posted this question.
>
> Bob
>   

Hello, Bob,
Very thanks to you.
I have installed this packege but I can  find neither a man-page of it
nor the help information. How can I use it (I think that it works when
system booting) and when (and how) can I see the results of this test?



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Re: I want all my 4GB!!!

[Victor Padro]

> There is 3071MB RAM I can see in my BIOS.

my guess is again that video is eating all that Gigabyte.

> But I have Windows XP pre-installed on my laptop too with some acer
> laptop special utilities. And such utility "see" all my 4GB under
> Windows XP (the Windows XP "see" only 3GB too, but it is not the version
> for 64 bits).
>
Try using an Ubuntu AMD64 liveCD and verify the RAM using the process
tool there.


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Re: I want all my 4GB!!!

[James Brown]

Victor Padro wrote:
> On Mon, Jul 20, 2009 at 3:46 PM, Victor Padro wrote:
>   
>> On Mon, Jul 20, 2009 at 3:41 PM, James Brown wrote:
>> 
>>> Victor Padro wrote:
>>>   
 On Mon, Jul 20, 2009 at 3:08 PM, James Brown wrote:

 
> I have a laptop Acer TravelMate 3043WTMi under Lenny AMD64 with 4GD RAM.
> But the system "see" only 3GB:
> dmesg |grep Memory
> [0.004000] Memory: 3081184k/3136000k available (2225k kernel code,
> 54428k reserved, 1080k data, 392k init)
> $ cat /proc/meminfo
> MemTotal:  3088108 kB
>
>
> How can I get all my 4GB memory?
>
>
> --
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> listmas...@lists.debian.org
>
>
>
>   
 Did you realize that you might have memory shared for your video adapter?


 
>>> Do you think that it maybe that the lost 1GB of my RAM use my videocard?
>>> And how did it work before upgrade my RAM, when I had 1GD at all?
>>>
>>>
>>>   
>> More RAM you have more memory can be shared for the video adapter.
>>
>> --
>> Usuario Linux Registrado #452368
>> Usuario Ubuntu Registrado #28025
>>
>> "Doing a thing well is often a waste of time."
>> --
>> //Netbook - HP Mini 1035NR 2GB 60GB - Windows XP/Ubuntu 9.04
>> //Desktop - Core 2 Duo 1.86Ghz 8GB 500GB - Windows 7(testing)
>> //Desktop - Core 2 Duo 2.40Ghz 8GB 320GB - MacOS Leopard
>> //Desktop - Athlon 64 2.7Ghz 8GB 400GB - Ubuntu Jaunty
>> //Server - Pentium D 3.2Ghz 8GB 1TB - Debian Lenny
>> //Server - Celeron 1.8Ghz 1GB 160GB - Pfsense
>> //Server - NSLU2 266Mhz 32MB 1TB - Debian Lenny
>>
>> 
>
> I forgot to tell you, that perhaps you can set the amount of memory
> shared in the BIOS, but know this, some BIOS have that option and some
> others doesn't.
>
>   
There is 3071MB RAM I can see in my BIOS.
But I have Windows XP pre-installed on my laptop too with some acer
laptop special utilities. And such utility "see" all my 4GB under
Windows XP (the Windows XP "see" only 3GB too, but it is not the version
for 64 bits).


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Re: I want all my 4GB!!!

[Bob Proulx]

James Brown wrote:
> I have a laptop Acer TravelMate 3043WTMi under Lenny AMD64 with 4GD RAM.
> But the system "see" only 3GB:
> dmesg |grep Memory
> [0.004000] Memory: 3081184k/3136000k available (2225k kernel code, 54428k 
> reserved, 1080k data, 392k init)

Hmm...  I recommend installing memtest86+ and then seeing how much
memory it detects at boot time.

  apt-get install memtest86+

This should automatically install a grub boot entry and be very easy
to boot into afterward.  I am thinking it might only detect 3G too.
In any case this would be a good independent test.

I wish you hadn't cross-posted this question.

Bob


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Re: I want all my 4GB!!!

[Victor Padro]

On Mon, Jul 20, 2009 at 3:46 PM, Victor Padro wrote:
> On Mon, Jul 20, 2009 at 3:41 PM, James Brown wrote:
>> Victor Padro wrote:
>>> On Mon, Jul 20, 2009 at 3:08 PM, James Brown wrote:
>>>
 I have a laptop Acer TravelMate 3043WTMi under Lenny AMD64 with 4GD RAM.
 But the system "see" only 3GB:
 dmesg |grep Memory
 [    0.004000] Memory: 3081184k/3136000k available (2225k kernel code,
 54428k reserved, 1080k data, 392k init)
 $ cat /proc/meminfo
 MemTotal:      3088108 kB


 How can I get all my 4GB memory?


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>>>
>>> Did you realize that you might have memory shared for your video adapter?
>>>
>>>
>>
>> Do you think that it maybe that the lost 1GB of my RAM use my videocard?
>> And how did it work before upgrade my RAM, when I had 1GD at all?
>>
>>
>
> More RAM you have more memory can be shared for the video adapter.
>
> --
> Usuario Linux Registrado #452368
> Usuario Ubuntu Registrado #28025
>
> "Doing a thing well is often a waste of time."
> --
> //Netbook - HP Mini 1035NR 2GB 60GB - Windows XP/Ubuntu 9.04
> //Desktop - Core 2 Duo 1.86Ghz 8GB 500GB - Windows 7(testing)
> //Desktop - Core 2 Duo 2.40Ghz 8GB 320GB - MacOS Leopard
> //Desktop - Athlon 64 2.7Ghz 8GB 400GB - Ubuntu Jaunty
> //Server - Pentium D 3.2Ghz 8GB 1TB - Debian Lenny
> //Server - Celeron 1.8Ghz 1GB 160GB - Pfsense
> //Server - NSLU2 266Mhz 32MB 1TB - Debian Lenny
>

I forgot to tell you, that perhaps you can set the amount of memory
shared in the BIOS, but know this, some BIOS have that option and some
others doesn't.

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//Desktop - Athlon 64 2.7Ghz 8GB 400GB - Ubuntu Jaunty
//Server - Pentium D 3.2Ghz 8GB 1TB - Debian Lenny
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Re: I want all my 4GB!!!

[Victor Padro]

On Mon, Jul 20, 2009 at 3:41 PM, James Brown wrote:
> Victor Padro wrote:
>> On Mon, Jul 20, 2009 at 3:08 PM, James Brown wrote:
>>
>>> I have a laptop Acer TravelMate 3043WTMi under Lenny AMD64 with 4GD RAM.
>>> But the system "see" only 3GB:
>>> dmesg |grep Memory
>>> [    0.004000] Memory: 3081184k/3136000k available (2225k kernel code,
>>> 54428k reserved, 1080k data, 392k init)
>>> $ cat /proc/meminfo
>>> MemTotal:      3088108 kB
>>>
>>>
>>> How can I get all my 4GB memory?
>>>
>>>
>>> --
>>> To UNSUBSCRIBE, email to debian-amd64-requ...@lists.debian.org
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>>> listmas...@lists.debian.org
>>>
>>>
>>>
>>
>> Did you realize that you might have memory shared for your video adapter?
>>
>>
>
> Do you think that it maybe that the lost 1GB of my RAM use my videocard?
> And how did it work before upgrade my RAM, when I had 1GD at all?
>
>

More RAM you have more memory can be shared for the video adapter.

-- 
Usuario Linux Registrado #452368
Usuario Ubuntu Registrado #28025

"Doing a thing well is often a waste of time."
--
//Netbook - HP Mini 1035NR 2GB 60GB - Windows XP/Ubuntu 9.04
//Desktop - Core 2 Duo 1.86Ghz 8GB 500GB - Windows 7(testing)
//Desktop - Core 2 Duo 2.40Ghz 8GB 320GB - MacOS Leopard
//Desktop - Athlon 64 2.7Ghz 8GB 400GB - Ubuntu Jaunty
//Server - Pentium D 3.2Ghz 8GB 1TB - Debian Lenny
//Server - Celeron 1.8Ghz 1GB 160GB - Pfsense
//Server - NSLU2 266Mhz 32MB 1TB - Debian Lenny


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Re: I want all my 4GB!!!

[James Brown]

Victor Padro wrote:
> On Mon, Jul 20, 2009 at 3:08 PM, James Brown wrote:
>   
>> I have a laptop Acer TravelMate 3043WTMi under Lenny AMD64 with 4GD RAM.
>> But the system "see" only 3GB:
>> dmesg |grep Memory
>> [0.004000] Memory: 3081184k/3136000k available (2225k kernel code,
>> 54428k reserved, 1080k data, 392k init)
>> $ cat /proc/meminfo
>> MemTotal:  3088108 kB
>>
>>
>> How can I get all my 4GB memory?
>>
>>
>> --
>> To UNSUBSCRIBE, email to debian-amd64-requ...@lists.debian.org
>> with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
>>
>>
>> 
>
> Did you realize that you might have memory shared for your video adapter?
>
>   

Do you think that it maybe that the lost 1GB of my RAM use my videocard?
And how did it work before upgrade my RAM, when I had 1GD at all?


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Re: I want all my 4GB!!!

[Victor Padro]

On Mon, Jul 20, 2009 at 3:08 PM, James Brown wrote:
> I have a laptop Acer TravelMate 3043WTMi under Lenny AMD64 with 4GD RAM.
> But the system "see" only 3GB:
> dmesg |grep Memory
> [    0.004000] Memory: 3081184k/3136000k available (2225k kernel code,
> 54428k reserved, 1080k data, 392k init)
> $ cat /proc/meminfo
> MemTotal:      3088108 kB
>
>
> How can I get all my 4GB memory?
>
>
> --
> To UNSUBSCRIBE, email to debian-amd64-requ...@lists.debian.org
> with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
>
>

Did you realize that you might have memory shared for your video adapter?

-- 
Usuario Linux Registrado #452368
Usuario Ubuntu Registrado #28025

"Doing a thing well is often a waste of time."
--
//Netbook - HP Mini 1035NR 2GB 60GB - Windows XP/Ubuntu 9.04
//Desktop - Core 2 Duo 1.86Ghz 8GB 500GB - Windows 7(testing)
//Desktop - Core 2 Duo 2.40Ghz 8GB 320GB - MacOS Leopard
//Desktop - Athlon 64 2.7Ghz 8GB 400GB - Ubuntu Jaunty
//Server - Pentium D 3.2Ghz 8GB 1TB - Debian Lenny
//Server - Celeron 1.8Ghz 1GB 160GB - Pfsense
//Server - NSLU2 266Mhz 32MB 1TB - Debian Lenny


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I want all my 4GB!!!

[James Brown]

I have a laptop Acer TravelMate 3043WTMi under Lenny AMD64 with 4GD RAM.
But the system "see" only 3GB:
dmesg |grep Memory
[0.004000] Memory: 3081184k/3136000k available (2225k kernel code,
54428k reserved, 1080k data, 392k init)
$ cat /proc/meminfo
MemTotal:  3088108 kB


How can I get all my 4GB memory?


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