Forgot to mention, I'm using kernel 3.14 (https://github.com/raspberrypi/linux/tree/rpi-3.14.y) and got the firmware from here - https://github.com/qca/open-ath9k-htc-firmware.git (master branch)
On Tue 20 May 2014 08:01:43 PM IST, Saurabh Chakrabarti wrote: > I am using TP-link WN721n usb wifi adapter with atheros 9271 chipset > on raspberry pi. There are times when the wifi interface goes into an > unresponsive state in which it does not send or receive any packets. > > Here's the error log I get as soon as this occurs, > > May 16 15:55:13 raspberry kernel: [ 240.974619] ath: phy0: Timeout > waiting for WMI command: WMI_REG_WRITE_CMDID > May 16 15:55:13 raspberry kernel: [ 241.053067] ath: phy0: REGISTER > WRITE FAILED:(0x4048, -110) > May 16 15:55:14 raspberry kernel: [ 241.737670] ath: phy0: Dropping a > packet due to TX timeout > > When this state is hit, I reboot the system, but after reboot the wifi > interface(wlan0) does not come back up. Here's the error I get on > startup in the kernel log, > > usb 1-1.2: device descriptor read/64, error -110 > > Interestingly, it works like a charm when I turn off the power and > turn it back on(or if I pull the wifi adapter out and insert it back). > But obviously I cannot do this all the time as the system is at a > remote location. > > Although I would want to know why the interface goes into this state, > is there anything I can do so that I can atleast reset the interface > once it goes into this state? > > Regards, > Saurabh Chakrabarti > _______________________________________________ ath9k-devel mailing list ath9k-devel@lists.ath9k.org https://lists.ath9k.org/mailman/listinfo/ath9k-devel
