[Bugme-new] [Bug 16570] New: acer-wmi is loaded on a Lenovo Idepad S12 (Intel/Broadcom version), causes problems with NetworkManager

bugzilla-daemon at bugzilla.kernel.org bugzilla-daemon at bugzilla.kernel.org
Thu Aug 12 02:59:35 PDT 2010


https://bugzilla.kernel.org/show_bug.cgi?id=16570

           Summary: acer-wmi is loaded on a Lenovo Idepad S12
                    (Intel/Broadcom version), causes problems with
                    NetworkManager
           Product: ACPI
           Version: 2.5
    Kernel Version: kernel-PAE-2.6.34.3-37.fc13.i686
          Platform: All
        OS/Version: Linux
              Tree: Fedora
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Platform-Drivers
        AssignedTo: acpi_platform-drivers at kernel-bugs.osdl.org
        ReportedBy: vpivaini at cs.helsinki.fi
        Regression: No


I have a Lenovo Ideapad S12 (the Intel-based version with Broadcom network
hardware) and for some reason the acer-wmi module gets loaded. This breaks
NetworkManager and I need to click on "Enable Wireless" after login to get the
wifi chip to scan for networks.I think this is due to the acer-wmi driver
adding a killswitch which is disabled by default or something like that. If I
blacklist the acer-wmi driver, wifi networking works as expected.

Here's some diagnostics I was asked to collect on the networkmanager-list:

"rfkill list" with acer-wmi:
0: hci0: Bluetooth
        Soft blocked: no
        Hard blocked: no
1: acer-wireless: Wireless LAN
        Soft blocked: yes
        Hard blocked: no
2: phy0: Wireless LAN
        Soft blocked: no
        Hard blocked: no

"rfkill list" without acer-wmi:
1: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no
3: hci0: Bluetooth
    Soft blocked: no
    Hard blocked: no

"cat /sys/class/rfkill/*/state" with acer-wmi:
1
0
1

"cat /sys/class/rfkill/*/state" without acer-wmi:
1
1

"cat /sys/class/rfkill/*/type" with acer-wmi:
bluetooth
wlan
wlan

"cat /sys/class/rfkill/*/type" without acer-wmi:
wlan
bluetooth

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