On Tue, Oct 25, 2011 at 06:22:47AM +0800, joeyli wrote:
 > 於 四,2011-10-13 於 14:51 +0800,Ike Panhc 提到:
 > > BugLink: http://launchpad.net/bugs/836865
 > > BugLink: http://launchpad.net/bugs/826784
 > > 
 > > There are reports say that acer-wmi is loaded on Thinkpad E520 which
 > > cause wireless connection hard blocked and we can not unblock it. It
 > > will be better not to load acer-wmi on this machine.
 > > 
 > > Signed-off-by: Ike Panhc <[email protected]>
 > > ---
 > >  drivers/platform/x86/acer-wmi.c |    7 +++++++
 > >  1 files changed, 7 insertions(+), 0 deletions(-)
 > > 
 > > diff --git a/drivers/platform/x86/acer-wmi.c 
 > > b/drivers/platform/x86/acer-wmi.c
 > > index af2bb20..dc9a116 100644
 > > --- a/drivers/platform/x86/acer-wmi.c
 > > +++ b/drivers/platform/x86/acer-wmi.c
 > > @@ -325,6 +325,13 @@ static struct dmi_system_id __devinitdata 
 > > acer_blacklist[] = {
 > >                    DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"),
 > >            },
 > >    },
 > > +  {
 > > +          .ident = "Lenovo Thinkpad Edge E520",
 > > +          .matches = {
 > > +                  DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
 > > +                  DMI_MATCH(DMI_PRODUCT_NAME, "114320U"),
 > > +          },
 > > +  },
 > >    {}
 > >  };
 > >  
 > 
 > Unfortunately didn't see any useful EC register for unblock wifi rfkill in 
 > acer-wmi, let's 
 > add this device to blacklist.
 > 
 > Signed-off-by: Lee, Chun-Yi <[email protected]>

We've seen similar reports from other Lenovo machines & acer-wmi in Fedora 
bugzilla.
https://bugzilla.redhat.com/show_bug.cgi?id=674353 for example has people 
reporting
the b450 and V460 also suffer the same issue.

(There are also a bunch of bug reports from the other *-wmi modules on various 
hardware.
It seems these modules really upset rfkill).

        Dave

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