Subject: Re: Unable to mmap /dev/mem
To: Matthieu Herrb <>
From: Jared D. McNeill <>
List: tech-x11
Date: 11/13/2000 12:03:24
On Mon, 13 Nov 2000, Matthieu Herrb wrote:
> Yes. It's trying to mmap the framebuffer, which has a physical address
> that is above the top of the RAM. /dev/mem doesn't allow this.
> In this case you need to use the aperture driver and to patch the
> application to try /dev/xf86 if /dev/mem fails.
> The aperture driver will allow mmaping of any address above the end of
> physical memory or in the BIOS VGA range.

Thanks a ton, I'll patch the source and send-pr it.