Re: Using acpi line to load DSDT table at runtime - Linux 16.04

[Andrei Borzenkov]

27.07.2016 15:37, carlos izzo videla пишет:
> Hello:
> 
> Like many others, my motherboard (Sun Ultra 24) has ACPI problems caused
> by a very badly written BIOS, to the extent of reporting itself to MS
> Windows as a laptop. 
> 
> I use Mint 18 64 bit, a W7 drive came with the workstation and I'm only
> booting for using with software that will not play nice with Wine. 
> 
> Unfortunately, there are no BIOS updates or support available from the
> OEM.
> 
> While I have been able to edit the DSDT table and recompile it with no
> errors I have not found a way to load it at runtime and I am not keen
> about recompiling a kernel.
> 
> While looking around for a way to load a modified DSDT table, I came
> across a post at http://savannah.gnu.org, referenced to
> http://savannah.gnu.org/bugs/?45002.
> 
> If I understand what it says correctly, the OP makes a reference to
> loading a DSDT file via GBUB2:
> 
> --- snip ---
> 
> I can load other ones (by making a dump to file from
> /sys/firmware/acpi/tables/XXXX and then loading with grub's acpi
> xxxx.dump) ...
> 
> --- snip ---
> 
> For the life of me I have not been able to find out how it is done or
> the syntax to use.
> I'd appreciate any input with respect to this.
> 


Compile table, place it in a file accessible to grub and use

acpi <file>

where <file> is name of file that contains compiled table. See if your
"info grub" contains description of acpi command.