From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lists.gentoo.org (unknown [208.92.234.80]) by finch.gentoo.org (Postfix) with ESMTP id 5C4421381FA for ; Wed, 21 May 2014 21:38:06 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 8E885E0982; Wed, 21 May 2014 21:37:55 +0000 (UTC) Received: from cc-smtpout1.netcologne.de (cc-smtpout1.netcologne.de [89.1.8.211]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by pigeon.gentoo.org (Postfix) with ESMTPS id 42AF4E0853 for ; Wed, 21 May 2014 21:37:54 +0000 (UTC) Received: from cc-smtpin2.netcologne.de (cc-smtpin2.netcologne.de [89.1.8.202]) by cc-smtpout1.netcologne.de (Postfix) with ESMTP id 8BCB212CF1 for ; Wed, 21 May 2014 23:37:52 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by cc-smtpin2.netcologne.de (Postfix) with ESMTP id 8659D11DE7 for ; Wed, 21 May 2014 23:37:52 +0200 (CEST) Received: from [88.153.124.226] (helo=cc-smtpin2.netcologne.de) by localhost with ESMTP (eXpurgate 4.0.2) (envelope-from ) id 537d1cb0-0bb2-7f0000012729-7f000001e9ed-1 for ; Wed, 21 May 2014 23:37:52 +0200 Received: from weird.wonkology.org (ip-88-153-124-226.unitymediagroup.de [88.153.124.226]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by cc-smtpin2.netcologne.de (Postfix) with ESMTPSA for ; Wed, 21 May 2014 23:37:52 +0200 (CEST) Date: Wed, 21 May 2014 23:37:51 +0200 From: Alex Schuster To: gentoo-user@lists.gentoo.org Subject: [gentoo-user] Only 4 of 8 GB usable Message-ID: <20140521233751.319ef024@weird.wonkology.org> X-Mailer: Claws Mail 3.9.3 (GTK+ 2.24.23; x86_64-pc-linux-gnu) Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Archives-Salt: c24a0e60-bc08-4c48-9d50-ac5098724ab8 X-Archives-Hash: d84ff90b9fc1b94eafc28da23de883d0 Hi there! So I installed another 4 GiB RAM into a Gentoo amd64 system that had 4 GiB already. But it still sees only 4 GiB, not 8 GiB: leela ~ # uname -a Linux leela 3.6.11-gentoo #3 SMP Mon Feb 4 15:37:48 CET 2013 x86_64 AMD A6-3500 APU with Radeon(tm) HD Graphics AuthenticAMD GNU/Linux leela ~ # free -m total used free shared buffers cached Mem: 3688 3269 419 0 108 1050 -/+ buffers/cache: 2110 1577 Swap: 2047 54 1993 Huh? Any idea why this is? The BIOS shows the full 8GiB, and lshw finds it. dmidecode shows that 8G should work: leela ~ # dmidecode -t 16 # dmidecode 2.11 SMBIOS 2.7 present. Handle 0x0008, DMI type 16, 23 bytes Physical Memory Array Location: System Board Or Motherboard Use: System Memory Error Correction Type: None Maximum Capacity: 8 GB Error Information Handle: Not Provided Number Of Devices: 2 In case this helps, I uploaded the outputs of dmesg [1], lshw -c memory [2] and full dmidecode output [3]. The dmesg output is somewhat weird though, it has several 'vmalloc: allocation failure: 0 bytes' entries. I suspected those were causing the problem, but I found that I needed to activate CONFIG_KALLSYMS=y, and they are gone. But still only 4 GiB RAM. The system is using an old kernel right now, so I cannot get the current dmesg, sorry for this. Probably related: Since I inserted this 2nd RAM module, wakeup from hibernate-ram does no longer work. Does this ring any bells? I'm out of ideas. Except than pulling out the 4 GB, or trying another mainboard. [1] http://www.wonkology.org/tmp/lshw.txt [2] http://www.wonkology.org/tmp/dmesg.txt [3] http://www.wonkology.org/tmp/dmidecode.txt Wonko