[PATCH 0/1] [Lucid] LP#526354: suspend/resume breaks sensors and fan V3

Tim Gardner tim.gardner at canonical.com
Wed Apr 21 13:40:07 UTC 2010

On 04/21/2010 03:21 AM, Andy Whitcroft wrote:
> We have been tracking an issue where suspend/resume breaks temperature
> sensors (which read 0 permenantly) and fans no longer turn on correctly.
> Upstream has tracked that to needing multi-byte access to the EC.
> Following this email is a patch which has been tested here to fix the
> issue.  The original patch here caused boot panics on most ThinkPad models
> and at least some MacBooks.  This is a second replacement version of this patch
> which still fixes the Dell systems, and does not kill ThinkPads nor MacBooks.
> Tested good here on both the original Dell and on a ThinkPad T30.
> Awaiting other testing feedback from affected users.
> -apw
> Andy Whitcroft (1):
>    ACPI: EC: Allow multibyte access to EC (v3)
>   drivers/acpi/acpica/exprep.c |   17 +++++++++++++++++
>   drivers/acpi/ec.c            |    7 ++-----
>   2 files changed, 19 insertions(+), 5 deletions(-)

Based on test results:

Acked-by: Tim Gardner <tim.gardner at canonical.com>

Tim Gardner tim.gardner at canonical.com

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