On Tue, 26 Jun 2012 18:03:56 +0200 Andreas Messer <andi@xxxxxxxxxxxx> wrote: > Dear all, > > updating my pc from linux kernel 3.3 to linux kernel 3.4 broke my > wlan. I'm using rt2571 based wlan module from qcom: LR802UKG, which > is wired to an internal usb port of my media center pc. The rfkill > switch is hardwired to make wlan active all the time. This setup is > (almost) properly working since about three years now. (If i ignore > the occasional vendor_request_error things) > When I use kernel 3.4., i get a lot of additional devices reported by > the kernel - three leds and a rfkill switch which have not been there > before. (or at least I did not notice them) The wlan device now > refuses to go online, saying that the kill switch is active, which of > course can not be as it is working with linux kernel 3.3. > Furthermore, the driver reports three leds, but my wlan device has > only one, so probably a bad eeprom? i dont know... Anyway, I noticed, > that when I set the radio led to brightness 255, which takes a lot of > time and gives me some vendor_request_errors, the rfkill switch gets > turned off (sys/class/rfkill/../hard = 0). Unfortunately, this > doesn't help to bring the interface online: After doing that I get > frequent vendor_request_failed messages, even the PC becomes stuck on > shutdown. (Probably NetworkManager waiting for something...) So, what > can I do to track down the problem? > > Cheers, > Andreas I have the same problem with a rt73usb too and with the kernel 3.4.4-2-ARCH (Archlinux). The solution was to recompile the kernel with the option CONFIG_RFKILL unset (really unset not as a module). Then everything works properly (exept you cannot disable it with rfkill). I did not had this problem before the kernel 3.4 (but I do not know if rfkill actually works, or if the wlan was always enabled). Olive -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
