On Fri, Dec 23, 2011 at 00:42 +0100, Oliver Joos wrote: > Hi everyone, > (I'm glad to post my first message here on linux-bluetooth) > > I collect facts about why various Bluetooth adapters stopped working > with bluez since 2011. We have several Laptops with Broadcom 2035 > adapters "03f0:011d" (chip says BCM92035NMD) where Bluetooth does not > work anymore since Ubuntu 11.04 (bluez 4.91). Pairing works, but data > transfer does not. Same issue with my mobile (Symbian S60v3.1), my > headset and my mini keyboard. Also affected are Android phones and other > common Bluetooth adapters like Cambridge Silicon Radio "0a12:0001". > See details from other victims on https://bugs.launchpad.net/bugs/839157 > > With the help of Nikolay Kachanov (he posted here on August 4th) I found > that if I replace the package bluez 4.91 with 4.84 then everything works > as expected. bluez 4.91 even works if only "/usr/sbin/bluetoothd" is > replaced by the one from 4.84, whereas 4.85 does not work anymore. > So IMO the regression occurred in bluetoothd 4.85. > > I have attached all logs I made using bluez_4.84-0ubuntu1_i386.deb and > bluez_4.85-0ubuntu1_i386.deb. With the bluetooth-applet I stopped the > bluetooth service, the deleted /var/lib/bluetooth/, replaced bluetoothd, > restarted service, did pairing (which always works!) and then tried to > connect my mobile (which fails with 4.85). > > To me one interesting difference is in bluetoothd_4.8x.log where > "plugins/hciops.c:link_key_request()" is missing with 4.85. > And an even more suspicious difference is in hcidump-Xt_4.8x.log here: > > With bluetoothd 4.84 (which works): > < HCI Command: Create Connection (0x01|0x0005) plen 13 > 0000: 8d 68 6b 9a 1c 00 18 cc 01 00 ed f3 01 .hk.......... > > With bluetoothd 4.85 (which fails): > < HCI Command: Create Connection (0x01|0x0005) plen 13 > 0000: 8d 68 6b 9a 1c 00 18 cc 01 00 78 b6 01 .hk.......x.. > > Now I hope that someone on this list has an idea where this bug hides. > Please just ask if additional info would be helpful! > > With kind regards, > +++ Oliver > No feedback at all? I am surprised. (Is there a better place for bluez bug repors?) Since I haven't the time to go deeper into the code, I will spread the word about downgrading to 4.84 next week among the people affected (on launchpad.net ect.) Thanks for reading, +++ Oliver -- To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
