Unable to boot Lenovo T520
freebsd at jdc.parodius.com
Fri Jun 10 23:42:29 UTC 2011
On Fri, Jun 10, 2011 at 04:15:56PM -0700, Xin LI wrote:
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> Hash: SHA256
> On 06/10/11 15:15, Kevin Oberman wrote:
> > I am hitting the problem reported some time ago with atkbd and svn
> > 197392.
> > It's not clear that this has ben finally resolved, but I am still
> > hitting it with -stable on my new T520. I really want to get FreeBSD up
> > on it, but I am dead in the water at this time. I guess I'll have to
> > build a new kernel with any fix and replace the kernel in the ISO.
> > Also, I am hoping to use it on an amd64 kernel and I am even less sure
> > that any patch will work on that arch.
> > The original thread was
> > http://freebsd.1045724.n5.nabble.com/svn-rev-197392-hangs-during-boot-td3926276.html
> The fix was not (yet) merged back to 8-STABLE. You may use a
> 8.0-RELEASE kernel to boot the system temporarily and apply this patch:
> (If hunk #1 fails to apply, it's Ok to just ignore it).
- if (x86bios_get_intr(0x15) == 0 || x86bios_get_intr(0x16) == 0)
+ if (x86bios_get_intr(0x15) != 0xf000f859 ||
+ x86bios_get_intr(0x16) != 0xf000e82e)
What are these magic numbers? Where did they come from? What do they
represent? Why are they not documented in the source code/commit
itself? No offence, but this is an open-source project; anyone looking
at this code isn't going to know what those vectors represent. The
commit message is also lacking (again: magic values not mentioned), and
expecting a developer to dig through commits/annotations to determine
what this piece of code is for is unreasonable.
No I'm not in a bad mood (honest!), I just find this kind of thing
infuriating the more I dig through kernel source code.
| Jeremy Chadwick jdc at parodius.com |
| Parodius Networking http://www.parodius.com/ |
| UNIX Systems Administrator Mountain View, CA, US |
| Making life hard for others since 1977. PGP 4BD6C0CB |
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