http://bugzilla.kernel.org/show_bug.cgi?id=10454
------- Comment #6 from [EMAIL PROTECTED] 2008-04-21 02:56 -------
(In reply to comment #5)
> (In reply to comment #3)
> I disagree.
> what feature is lost? If OSI("Windows 2006") brings some errors, it means that
> Linux doesn't supported it. We can not fix it right now as how the BIOS works
> in Linux is not not tested before release. :(
> acpi_osi= is just a workaround for such problems.
* all graphic related notifies are lost since they notify
_SB.PCI0 instead of _SB.PCI0.GFX0 (ok, can also be worked around in udev/acpid)
* the video output switching does not work via the buttons
* some battery information is not available (eg. design_capacity_* is set to 0
and no battery low/warning notifies are generated, can also be worked around in
userspace)
> > so a more
> > appropriate solution might be to fix the signature on the fly? like this:
> > (perhaps this should only be done based on some DMI whitelisting?)
>
> I think nothing is wrong when loading a NULL signature table. The error
> message
> is clear and reasonable.
> Linux should NEVER load such a table, maybe that piece of memory is not a
> table
> at all.
since this seems to be a common problem on fujitsu machines we could only
enable
this for them or handle the
Load (VIST, VSTH)
in the DSDT differently (allowing empty signatures). This is also a good
indication that this memory is indeed a table.
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