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Author Topic: ACPI: EC: input buffer is not empty, aborting transaction  (Read 2994 times)

Offline jur

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ACPI: EC: input buffer is not empty, aborting transaction
« on: May 24, 2011, 03:09:35 AM »
ACPI: EC: input buffer is not empty, aborting transaction

The above error is appearing on my Dell when I boot. I have googled a bit around and it appears to have been a kernel bug which was supposed to have been resolved by 2.6.32. So I am a little puzzled why it still appears here in 2.6.33?

Would this be fixed by using one of the acpi boot codes? I am completely out of my depth here. The AC adapter seems not to be detected properly, and I am not sure what other detrimental effects there might be that would otherwise be nicely functional.

Any opinions?

Offline curaga

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Re: ACPI: EC: input buffer is not empty, aborting transaction
« Reply #1 on: May 24, 2011, 03:21:01 AM »
It could also be that your acpi bios is buggy (it very likely is ;)). Battery charging is usually handled by the hardware, so not having the OS know when it's plugged in shouldn't matter.
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Offline tinypoodle

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Re: ACPI: EC: input buffer is not empty, aborting transaction
« Reply #2 on: May 24, 2011, 04:23:21 AM »
kernel param 'acpi=off' would probably be the most radical and simple thing to try first.
"Software gets slower faster than hardware gets faster." Niklaus Wirth - A Plea for Lean Software (1995)

Offline Rich

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Re: ACPI: EC: input buffer is not empty, aborting transaction
« Reply #3 on: May 24, 2011, 08:36:58 AM »
Last February someone gave me a Dell laptop because the AC adapter had died. While Googling for
a suitable replacement I found that Dell communicates with the power supply through a third pin thats
inside the hollow tube of the connector. I came across a link by one fellow who opened a Dell supply
and decoded some of the data. Try googling on the following if your interested:

               dell power supply eprom