Ken Moffat wrote:
On Sat, Nov 08, 2014 at 02:16:05AM -0600, Bruce Dubbs wrote:
Bruce Dubbs wrote:
Just for discussion, here is the dmesg log from my experiment with
CONFIG_HIGHMEM64G. I also tried to set mem=4G on the kernel command line,
but that did not seem to have any effect.
http://anduin.linuxfromscratch.org/~bdubbs/files/dmesg-test
I just booted the i686 system on my AMD A4 - that has 4GB less the
integrated graphics (it used to allocate 512MB for that, but I found
an option hidden in the BIOS to reduce that, a little) and now get
3.8 GB (decimal GB) of memory shown in top - that is with
HIGHMEM64G.
Unfortunately, I could not see any equivalent to your 3.4 kernel's
HIGHMEM and LOWMEM, mine only got mentioned for the graphics.
Do you have a copy of memtest86 ? If you do, I would try running
it - first, to see how much memory it will test (maybe something is
occupied, e.g. by a PCI device, and unavailable), and second to give
some confidence that the upgraded memory works. I once had an AMD64
motherboard where filling all the memory slots meant I had to reduce
the memory speed to avoid memory failures.
Yes, I tried memtest and it only recognized 3.1G.
Also, 3.4 is a longterm stable kernel, latest is 3.4.104. Unlike
Douglas, I do not think that a newer kernel is likely to find more
RAM, but it should be a better place from which to move forward.
Good thought, but I don't want to update if the only issue is the RAM.
I'm more likely to just update to a proper 64-bit system.
-- Bruce
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