DragonFly kernel List (threaded) for 2003-11
Re: Can anyone explain this?
On Sun, 16 Nov 2003, Matthew Dillon wrote:
> :I have a dual P3 VIA motherboard (from Gigabyte) that I'm currently
> :running multiple operating systems from: Slackware 9.1, NetBSD -CURRENT,
> :DragonFlyBSD, BeOS, Windows XP, and Syllable.
> :Of those six, any time I reboot from DragonFlyBSD, I get the following
> :message from the computer when it POSTs.
> :"CMOS/GPNV Checksum Bad"
> :When I first noticed this pattern, I chalked it up to coincidence, and
> :just reset the CMOS to it's default values with F2 and kept going.
> :However, I'm beginning to doubt this is a coicidence any more. I have
> :spent all weekend rebooting between operating systems, with different
> :hardware configuration nearly every time, and this *only* happens when I
> :reboot from DragonFly.
> :Does this make any sense? Could the OS be screwing up my CMOS?
> Yes, it is screwing up the CMOS.
Woohoo, I'm not crazy! :-)
> Several people have reported this,
> but so far nobody has been able to track it down. I don't have a
> system that does this so I haven't been able to track it down either.
> Would you like to try to track it down? It involves throwing an endless
> loop into the low level boot code to lock the machine up and then hitting
> reset, then moving the loop to zero in on which part of our codebase is
> corrupting the CMOS.
My programming skills (especially when it comes to operating systems) if
fairly limited. If I get a chance this week, though, I might take a look
and see if there's anything I can do.