On Tuesday, August 20, 2013 11:10:44 PM Wouter Depypere wrote:
> On 08/20/2013 11:15 PM, Rafael J. Wysocki wrote:
> > On Tuesday, August 20, 2013 10:05:18 PM Wouter Depypere wrote:
> >> Hi,
> >>
> >> I recently updated my kernel (from 3.2.0.4 to 3.10) and noticed the
> >> hardware switch to enable/disable wireless didn't work anymore, it is
> >> completely ignored, dmesg shows no output. My laptop is a Dell E6230
> >> with an Intel Corporation Centrino Ultimate-N 6300 (rev 35) wireless
> >> adapter.
> >>
> >> I bisected with git (bisect log and final output attached to this mail)
> >> and found the commit after which it stopped working:
> >> a57f7f9175b8ccbc9df83ac13860488913115de4
> >>
> >> I commented out this line:
> >>
> >> diff --git a/drivers/acpi/acpica/utosi.c b/drivers/acpi/acpica/utosi.c
> >> index 7e80772..ca06691 100644
> >> --- a/drivers/acpi/acpica/utosi.c
> >> +++ b/drivers/acpi/acpica/utosi.c
> >> @@ -73,7 +73,7 @@ static struct acpi_interface_info
> >> acpi_default_supported_interfaces[] = {
> >> {"Windows 2006 SP1", NULL, 0, ACPI_OSI_WIN_VISTA_SP1}, /*
> >> Windows Vista SP1 - Added 09/2009 */
> >> {"Windows 2006 SP2", NULL, 0, ACPI_OSI_WIN_VISTA_SP2}, /*
> >> Windows Vista SP2 - Added 09/2010 */
> >> {"Windows 2009", NULL, 0, ACPI_OSI_WIN_7}, /* Windows 7 and
> >> Server 2008 R2 - Added 09/2009 */
> >> - {"Windows 2012", NULL, 0, ACPI_OSI_WIN_8}, /* Windows 8 and
> >> Server 2012 - Added 08/2012 */
> >> +/* {"Windows 2012", NULL, 0, ACPI_OSI_WIN_8}, /* Windows 8 and
> >> Server 2012 - Added 08/2012 */
> >>
> >> /* Feature Group Strings */
> >>
> >>
> >> I recompiled (both 3.10 and 3.11.0-rc6 kernels) and strangely enough my
> >> switch is working again.
> >>
> >> Can somebody look into this?
> > If it works with 3.10.y and later, what exactly do you need?
> >
> > Rafael
> >
>
> It doesn't work with 3.10.y unless I edit the file and comment out that
> line about Windows 2012.
I see, thanks for the clarification.
Passing acpi_osi="!Windows 2012" in the kernel command line instead of editing
the file above should help too.
If that's the case, please add your system information to bug #60697 at
bugzilla.kernel.org.
Thanks,
Rafael
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