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

Andy Whitcroft apw at canonical.com
Wed Apr 21 09:21:38 UTC 2010

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.


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(-)

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