On Tue, Nov 23, 2010 at 21:22, Larry Finger <Larry.Finger@xxxxxxxxxxxx> wrote: > On 11/23/2010 01:26 PM, Klaas De Craemer wrote: >> >> This morning I put the transceiver inside. I just connected it to the >> Atom box without antenna and it reported no wireless block: >> >> [ Â382.312044] usb 1-3: new high speed USB device using ehci_hcd and address 2 >> [ Â382.450722] usb 1-3: New USB device found, idVendor=0bda, idProduct=8187 >> [ Â382.450835] usb 1-3: New USB device strings: Mfr=1, Product=2, SerialNumber=3 >> [ Â382.450939] usb 1-3: Product: RTL8187_Wireless >> [ Â382.451027] usb 1-3: Manufacturer: Manufacturer_Realtek_RTL8187_ >> [ Â382.451122] usb 1-3: SerialNumber: 00C0CA3F9517 >> [ Â382.451822] usb 1-3: configuration #1 chosen from 1 choice >> [ Â382.743060] phy1: Selected rate control algorithm 'minstrel' >> [ Â382.746490] phy1: hwaddr 00:c0:ca:3f:95:17, RTL8187vB (default) V1 >> + rtl8225z2, rfkill mask 2 >> [ Â382.764106] rtl8187: Customer ID is 0xFF >> [ Â382.764344] Registered led device: rtl8187-phy1::tx >> [ Â382.764554] Registered led device: rtl8187-phy1::rx >> [ Â382.765254] rtl8187: wireless switch is on >> [ Â382.765594] usbcore: registered new interface driver rtl8187 >> >> Then I put it back onto the antenna outside and it connected just fine. >> >> I'm really confused now. Does this mean that it might be both a hard- >> & software problem? I guess I should also check if it works fine >> "warm" + immediately connecting it to the antenna. If temperature is >> such a problem I might put a heating resistor inside the transceiver >> housing... > > I think we do have both a hardware problem in that your device is getting a > false hardware block reading when cold, and that the Linux driver is missing > some operation that compensates for this hardware error. > >> The Windows driver is 6.1316.1209.2009 for Windows 7 64bit. It comes >> with a GUI from Alfa Networks that says version 700.1604.108.201. > > The only Windows 7 system here belongs to my wife, and any requests to use it > for testing are not well received. In addition, the USB capture code I have only > works on XP. I will try to get that driver, or as close as I can. > > A heating element of some sort might be the best bet. As winter comes, the > device might not generate enough heat to keep working. I don't know how cold it > gets where you are located, but if it is 4-5 now, I would expect at least -20 later. > > Larry > Don't worry, I live in Belgium and temperatures in winter rarely get below -10 ÂC. I might just jam an USB cup heater in the enclosure... If you think there is anything I can help you with, please let me know. For now I'll try some more test variations to see if I can find more clues. Klaas -- 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
