Updated ec-burst.diff patch

John Baldwin jhb at FreeBSD.org
Thu Jul 3 07:34:20 PDT 2003

On 02-Jul-2003 Nate Lawson wrote:
> On Wed, 2 Jul 2003, John Baldwin wrote:
>> On 01-Jul-2003 Nate Lawson wrote:
>> > Please download and try the new version.  It correctly implements burst
>> > mode to the best of the 2.0 spec.  Like the previous message, please
>> > report the appropriate dmesgs ("acpi_ec0*" and "EC Waited*") and any
>> > errors or regression.  I've tested "du -a /" while plugging/unplugging the
>> > power cable on my laptop many times with no errors.
>> >
>> > I haven't received any feedback yet.  This WILL hit the tree in a few
>> > weeks because it fixes known problems.  Test it now or test it then.  :)
>> This made my machine a LOT worse.  Previously I would occasionally get
>> failed EcRead's do to timeout reading the battery and thermal status after
>> the machine had been up for a while, but battery status still worked.
>> Setting the event_driven tunable made no difference.  With this patch, the
>> EC is very, very broke.  I now get spammed during bootup with a flood of
>> failures from EcCommand:
>> EC Waited max 16 cycles, event occurred
>> acpi_ec0: EcCommand: no response to 80, disabling burst mode
> It appears your machine does not properly support burst mode.  I suspected
> that may be the case, which is what I was checking.  I'll be doing some
> more work on the patch and post it again.


>>  This has seriously hosed my machine.
> Um, you can go back to the old acpi module and I doubt it caused any loss.
> Thanks for testing.

Of course, but while using it it hosed my machine. :)  It was functional
enough for me to compose the above e-mail except that the mouse kept flying
up to the upper-right hand corner of the screen and I had to double-type
several keys. :)


John Baldwin <jhb at FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve!"  -  http://www.FreeBSD.org/

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