On Fri, Apr 16, 2010 at 10:34 PM, Tsuwei Chen <tsuwei@xxxxxxxxx> wrote: > Has anyone use the zd1211 usb adapter with mini-itx board based on > geforce 9300? I have been experience some annoying issues ever since I > got this motherboard. The problem is that sometime the card just > cannot be switched on. It complains about ioread32() error -110. And I > have spent a few days and try a few different combination, and here is > what I have found so far: > > 1, with 1 wifi adapter directly plugged into the board, the wifi > adapter works fine most of the time (have seen a couple failure, but > is hard to reproduce) > 2. with 1 wifi adapter, plugged in through a USB hub, the driver > complains ioread32 error. I've try 2 USB hubs: a cheap 4-port USB > dongle and also the USB hubs built into my DELL monitor. Both showed > the same problem. > 3. If I plugged in 2 wifi adapters directly to the board, more than > 50% of chance one of the wifi adapter would fail during the 'ifconifg > up'. > > I tried to dig our more on this. I am using kernel 2.6.24-26 (ubuntu). Please try a more recent kernel - 2.6.24 contains zd1211rw-ieee80211softmac, which is no longer developed. > I had turned on the debug message output and I have traced out that > the failure was first detected in the zd_mac_open(). Probably around > the call to zd_chip_switch_radio_on(). The error message is printed in > the zd_usb_ioread16v(), and probably indicate the driver is > experiencing a timeout while it is trying to read the register from > the adapter. > > What exactly does this mean? Why adding a usb hub cause such a huge > differnce? Has anyone experienced similar problem before? Any pointer > that can help me solve this problem is appreciated. > > BTW, I never had this problem before when I was still using a regular > HP desktop PC, even with the same version of kernel and same USB hub. > I switched to mini-itx because I am building a small system. So if > anyone is currently using this adapter with a mini-ITX board, please > also let me know which model you use. > > TIA, > Tsuwei > -- > 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 > -- Vista: [V]iruses, [I]ntruders, [S]pyware, [T]rojans and [A]dware. :-) -- 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
