Date: Wed, 11 Mar 1998 22:37:48 -0500 From: Norman C Rice <nrice@emu.sourcee.com> To: Jakob Alvermark <jakob@teligent.se> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: 512MB ram? Message-ID: <19980311223748.20385@emu.sourcee.com> In-Reply-To: <Pine.BSF.3.96.980311183548.19568C-100000@datorn.teligent.se>; from Jakob Alvermark on Wed, Mar 11, 1998 at 07:29:13PM %2B0100 References: <Pine.BSF.3.96.980311183548.19568C-100000@datorn.teligent.se>
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On Wed, Mar 11, 1998 at 07:29:13PM +0100, Jakob Alvermark wrote: > Hello. > > I've got a nice machine over here. A Pentium II-MMX 300 MHz with 512 Mb > RAM. But, it seems like I can't use all the RAM... :( > With the generic kernel, it detects 64 megs. I recompiled the kernel with > the option MAXMEM=(512*1024) and rebooted. The sees the memory, but then > directly panics with "bounce memory out of range" right after it prints > the "real memory" message. I tried setting MAXMEM to 256 megs (256*1024) > and it worked. But I want to use all of my memory, not half :( > > What can be the problem? Please cc: me, I'm not on this list. > > /Jakob Alvermark > > ------------------------------------------------------- > Teligent AB, P.O. Box 213, S-149 23 Nynäshamn, Sweden > Telephone +46-(0)8 520 660 00 * Fax +46-(0)8 520 193 36 > Direct +46-(0)8 520 660 32 * GSM +46-(0)70 792 16 57 I have a system with 512MB and couldn't even get 2.2.5-RELEASE to install due to the annoying bounce buffer problem. I ended up moving to -CURRENT where there is this nifty feature that detects/predicts `the bounce buffer out of range' issue and disables the bounce buffers. ;-) I don't know whether this feature made its way into the upcoming 2.2.6-RELEASE, but I sure hope it did. (Jordan?) Your problem should disappear by manually disabling (commenting) the `options BOUNCE_BUFFERS' in your kernel configuration file and building/installing a new kernel. AFAIK you don't need to specify the `MAXMEM' option in 2.2.5-RELEASE and later systems; it's automagically detected. Enjoy the 512MB. -- Regards, Norman C. Rice, Jr. > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-questions" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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