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. 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. ĸen -- Nanny Ogg usually went to bed early. After all, she was an old lady. Sometimes she went to bed as early as 6 a.m. -- http://lists.linuxfromscratch.org/listinfo/lfs-support FAQ: http://www.linuxfromscratch.org/blfs/faq.html Unsubscribe: See the above information page Do not top post on this list. A: Because it messes up the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail? http://en.wikipedia.org/wiki/Posting_style
