As mentioned in comment #12 this is primarily triggered by the memory
not all being below the 4GB physical boundary. The correct solution is
to use a PAE enabled kernel. This was discussed at Karmic UDS and the
flavours updated such that there is a generic and generic-pae kernel.
These should be
I'm pretty sure I tried at least one pae enabled kernel at the time of
my comment #20 (-server was pae enabled? anyways I also tried to switch
to 64GB support by hand-compiling a kernel also)... by the way I also
tried 64 bit ubuntu, but it also saw only ~3GB of my memory... maybe
it's time to try
by the way I also tried 64 bit ubuntu, but it also saw only ~3GB
I see no way a 64-bit distro falls short of using every RAM there is.
(Well maybe there are kernel params to restrict the RAM but I assume you have
not done that)
IMO you either have only 3 GB, or your mainboard and/or BIOS lack
I've seen ~3GB also under 64bit version, but anyways, in my case it's
(assumably) an interference with intel-hda video driver.
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Ubuntu kernel doesn't support =4GB memory
https://bugs.launchpad.net/bugs/74179
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hello again, as we searched for forums for the solution, we found that
the problem might lie in a coincidence: I have an intel gma card, and
this causes the same for several fedora users. blacklisting the
intel_gma won't help.
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Ubuntu kernel doesn't support =4GB memory
hello, I am not sure if I report to the right place, but I have 4 gb (2x2GB) of
ram (also lshw confirms that), but under any ubuntu (including 64 bit, 32 bit
-server -generic, and howto here:
http://www.kreno.be/2007/11/22/howto-ubuntu-4gb-memory-support/ ) I can see
only ~3GB. top says: Mem:
** Changed in: linux-source-2.6.17 (Ubuntu)
Status: Invalid = Won't Fix
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Ubuntu kernel doesn't support =4GB memory
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I've just installed a Intel DG35EC motherboard with an Intel Core 2 Duo E8400
3GHz processor and 4GB RAM now running Linux las 2.6.28-11-server #42-Ubuntu
SMP Fri Apr 17 02:48:10 UTC 2009 i686 GNU/Linux.
I was puzzled by the fact that only 3GB of memory was usable with the desktop
9.04 system.
This problem still exists in the Jaunty RC kernel (2.6.28-11-generic
#42-Ubuntu SMP Fri Apr 17 01:57:59 UTC 2009 i686 GNU/Linux).
IMHO, the default 32-bit desktop kernel should support 4GB (by enabling
PAE) -- or if enabling PAE creates inefficiencies when it's not needed,
then a separate
Again, I'm running the Jaunty RC (2.6.28-11-generic #42-Ubuntu SMP Fri
Apr 17 01:57:59 UTC 2009 i686 GNU/Linux) on a desktop with 4 GB. The
BIOS reports 4GB on startup, but /proc/meminfo says it sees only 2838352
kB (2.75 GB).
I tried the Grub patch suggested in bug 189269
Just closing this against linux-source-2.6.22 as it will reach it's end
of life in approximately a week from now and it's unlikely a Stable
Release Update to 2.6.22 will be made for this before then. However,
please note this does remain open against the actively developed kernel.
Thanks.
**
Adding a new flavor -genericbigmem is the only good solution i think.
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The new flavor should be used if the installer detects more than 3 GB
ram. Also, if ram is upgraded, Ubuntu should suggest a switch.
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** Changed in: linux (Ubuntu)
Importance: Undecided = Low
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A knotty problem. The i386 -generic kernel is limited to 4GB of
physical address space. Commonly systems with 4GB or more will have the
memory placed such that there is a physical hole from 3GB to 4GB and the
remaining memory above that. Thus a 4GB system will commonly occupy 5GB
of physical
-server supports 4GB.
** Changed in: linux-source-2.6.22 (Ubuntu)
Status: New = Invalid
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Ubuntu kernel doesn't support =4GB memory
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Yeah, we know it works on -server. But we're not running servers. The
-server kernel is geared toward servers and we should not have to use a
server oriented kernel just to use more than 3GB of RAM.
** Changed in: linux-source-2.6.22 (Ubuntu)
Status: Invalid = Confirmed
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The Ubuntu Kernel Team is planning to move to the 2.6.27 kernel for the
upcoming Intrepid Ibex 8.10 release. As a result, the kernel team would
appreciate it if you could please test this newer 2.6.27 Ubuntu kernel.
There are one of two ways you should be able to test:
1) If you are comfortable
The 18 month support period for Edgy Eft 6.10 has reached it's end of
life. As a result, we are closing the linux-source-2.6.17 Edgy Eft
kernel task. However, please note that this report will remain open
against the actively developed kernel. Thank you for your continued
support and help as we
Hardy Heron 8.04 was recently released. It would be helpful if you
could test the new release and verify if this is still an issue -
http://www.ubuntu.com/getubuntu/download . You should be able to test
your bug using the LiveCD. Please let us know your results. Thanks.
** Changed in: linux
I have a Dell XPS with 4GB memory installed, running 32-bit Ubuntu Hardy
8.04:
[EMAIL PROTECTED]:~$ uname -a
Linux dell 2.6.24-19-generic #1 SMP Wed Jun 18 14:43:41 UTC 2008 i686 GNU/Linux
[EMAIL PROTECTED]:~$ free -m
total used free sharedbuffers cached
Mem:
** Changed in: linux (Ubuntu)
Assignee: (unassigned) = Ubuntu Kernel Team (ubuntu-kernel-team)
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Ubuntu kernel doesn't support =4GB memory
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I have the same problem in Ubuntu 7.10 with Kernel 2.6.22:
uname -a
Linux dell 2.6.22-14-generic #1 SMP Tue Feb 12 07:42:25 UTC 2008 i686 GNU/Linux
I have four 1GB dimms installed. BIOS reports 4GB memory installed.
However:
cat /proc/meminfo | grep MemTotal
MemTotal: 3106444 kB
Is there
** Also affects: linux-source-2.6.22 (Ubuntu)
Importance: Undecided
Status: New
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+1 Vote!
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I am assigning this bug to the 'ubuntu-kernel-team' per their bug
policy. For future reference you can learn more about their bug policy
at https://wiki.ubuntu.com/KernelTeamBugPolicies .
** Changed in: linux-source-2.6.17 (Ubuntu)
Assignee: (unassigned) = Ubuntu Kernel Team
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