My history in gadgets…

This gallery contains 19 photos.

As a geek, I’ve always been quite the gadget freak. The fact that my father was also interested in the newest toys didn’t help.

A quick list of my gadgets and phones over the years:

PDA history:

Psion Siena
Psion Siena

This I … Continue reading

Fixing the ACPI DSDT of an Acer Ferrari One 200

Last year I installed Debían on my mother in law’s network (an Acer Ferrari One 200). The thing ran fine, but gave some “firmware bug?” warnings. Since no new BIOS’ were available at that time, I left it at that.

When doing my yearly checkup and update round, there still wasn’t any new BIOS to be found. Annoying Acer! So I went around started digging in the ACPI DSDT tables to see if I could fix anything.

To dump them, you can either use the acpidump tool (acpidump -b --table DSDT > /tmp/dsdt.aml) , or just do a cat /sys/firmware/acpi/tables/DSDT > /tmp/dsdt.aml
Next, and decompile the thing with the iasl (Intel ACPI compiler/decompiler): iasl -d dsdt.aml. This should yield a file called dsdt.dsl, which is human readable. Sortof :p
First thing to fish out is to see whether the syntax is correct. To find out, we can just try to recompile it with the command iasl -tc dsdt.dsl.

In my case this didn’t exactly work:

ASL Input: DSDT.orig.dsl – 10886 lines, 405784 bytes, 4948 keywords
Compilation complete. 21 Errors, 6 Warnings, 18 Remarks, 1759 Optimizations


Amazed that this thing even booted!

(the reason for these mistakes is that many manufacturers use the Microsoft compiler which is a lot less strict when it comes to the DSL syntax. Intel’s compiler is less forgiving.)
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