Re: [maemo-users] Bluetooth stops working
On 2006/2/10, at 下午 7:41, Ville Tervo wrote: The same happens when I'm using my bluetooth keyboard. After a while I can no longer connect it. What is the keyboard you are using? I use a bluetooth keyboard from iTech. The Virtual Laser Keyboard. It fairly often stops working. I then change the device into "Offline mode". Then back to "Normal mode". And all is good again (well for a while at least). -Sean___ maemo-users mailing list maemo-users@maemo.org https://maemo.org/mailman/listinfo/maemo-users
Re: [maemo-users] Bluetooth stops working
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Ville Tervo wrote: > Hi, > > On Wed, Feb 08, 2006 at 04:32:04AM +0100, ext Peter Westerström wrote: >> I've been using gpsdrive with a bluetooth gps a couple of weeks now. I >> am experiencing the bluetooth connection to stop working after all >> between a few minutes to half an hour. >> After that happens no bluetooth commands works, rfcomm, hcitool scan >> reports nothing. > > What gps module you are using? And link to gpsdrive package would be > useful. Gpsdrive from: http://www.elisanet.fi/tapio.tolvanen/nokia770.html Then my blanking disable patched binary: http://westerstrom.com/projects/maemo-gpsdrive I get the same bluetooth loss without blanking patch even when keeping it active by touching the screen often. My GPS receiver is made by socketcom. I have never had any problem with it when connecting it to laptop or IPAQ. So we can rule that out. > >> The same happens when I'm using my bluetooth keyboard. After a while I >> can no longer connect it. > > What is the keyboard you are using? The problem does not happen that often with keyboard, Perhaps because of less data activity? The keyboard is a ThinkOutside HID compatible bluetooth keyboard. I'm using keyboard-plugin 0.2.2-2: http://770.fs-security.com/keyboard-plugin/btkeyboard-plugin_0.2.2-2_arm.deb > >> I'm using 3.2005.51-13. >> >> Have anyone else experienced similar problems? >> >> Maybe I should gain root access and try to restart bluetooth (hcitool >> hci0 down/up)? > > That resets bluetooth chip so it should help. Also putting setting > offline mode and back to online mode makes the same trick. Ok, I will try those tricks. Peter Westerström -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.2 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFD7SmgWUkGM6X3Sc4RAnHEAJ0bKSZmSg21+WLZq0j3vlxbnDAzIgCfVZ5f bAeCRmdhao+e2Wr+R32N2VI= =F4zk -END PGP SIGNATURE- ___ maemo-users mailing list maemo-users@maemo.org https://maemo.org/mailman/listinfo/maemo-users
Re: [maemo-users] Bluetooth stops working
Hi, On Wed, Feb 08, 2006 at 04:32:04AM +0100, ext Peter Westerström wrote: > I've been using gpsdrive with a bluetooth gps a couple of weeks now. I > am experiencing the bluetooth connection to stop working after all > between a few minutes to half an hour. > After that happens no bluetooth commands works, rfcomm, hcitool scan > reports nothing. What gps module you are using? And link to gpsdrive package would be useful. > > The same happens when I'm using my bluetooth keyboard. After a while I > can no longer connect it. What is the keyboard you are using? > > I'm using 3.2005.51-13. > > Have anyone else experienced similar problems? > > Maybe I should gain root access and try to restart bluetooth (hcitool > hci0 down/up)? That resets bluetooth chip so it should help. Also putting setting offline mode and back to online mode makes the same trick. -- Ville ___ maemo-users mailing list maemo-users@maemo.org https://maemo.org/mailman/listinfo/maemo-users
Re: [maemo-users] Bluetooth stops working
Nils Faerber wrote: This could be a firmware bug in the WLAN module as well... WIFI and Bluetooth use the same frequency spectrum of 2.4GHz. Bluetooth usually does not interfere with WIFIsince it uses very rapid channel switch (up to 1200 channel switches per second). But if you do an inquiry the Bluetooth module will almost broadcast inquiry packets on all of those channels almost at once to catch modules in its range. The inquiry scan algorithm is quite scary ;) So inquiry cause a lot of noise in the 2.4GHz spectrum. What could happen is that the WIFI firmware does not handle receive/transmit faults too well. So under certain circumstance while doing an inquiry a WIFI packet might get messed up quite badly without the radio detecting a signal drop (because in fact it had a good carrier all the time). Probably the same fault could be triggered with a high traffic WIFI cell... Yes, this looks like explanation. I hope it could be fixed in software. It is quite annoying when playing with bluetooth commands when I am ssh-ed into device over wi-fi. But it is also an issue in normal use cases like searching for the phone when listening to streamed music etc. Frantisek ___ maemo-users mailing list maemo-users@maemo.org https://maemo.org/mailman/listinfo/maemo-users
Re: [maemo-users] Bluetooth stops working
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Frantisek Dufka schrieb: > Peter Westerström wrote: >> The same happens when I'm using my bluetooth keyboard. After a while I >> can no longer connect it. >> I'm using 3.2005.51-13. >> Have anyone else experienced similar problems? [...] > BTW there is also something strange with wi-fi vs bluetooth in all > firmwares I had so far see > https://maemo.org/bugzilla/show_bug.cgi?id=326 looks like in heavy > bluetooth usage (hcitool scan,sdptool browse) wi-fi connection drops. This could be a firmware bug in the WLAN module as well... WIFI and Bluetooth use the same frequency spectrum of 2.4GHz. Bluetooth usually does not interfere with WIFIsince it uses very rapid channel switch (up to 1200 channel switches per second). But if you do an inquiry the Bluetooth module will almost broadcast inquiry packets on all of those channels almost at once to catch modules in its range. The inquiry scan algorithm is quite scary ;) So inquiry cause a lot of noise in the 2.4GHz spectrum. What could happen is that the WIFI firmware does not handle receive/transmit faults too well. So under certain circumstance while doing an inquiry a WIFI packet might get messed up quite badly without the radio detecting a signal drop (because in fact it had a good carrier all the time). Probably the same fault could be triggered with a high traffic WIFI cell... > Frantisek Cheers nils faerber - -- kernel concepts Tel: +49-271-771091-12 Dreisbachstr. 24 Fax: +49-271-771091-19 D-57250 Netphen Mob: +49-176-21024535 - -- -BEGIN PGP SIGNATURE- Version: GnuPG v1.4.1 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org iD8DBQFD6hQgJXeIURG1qHgRApkkAKCipsFYJBpX3OY7cn0AIFLJZJQfeQCfazYB J8gfZqs4TivArZZrVsCSrGA= =mtLz -END PGP SIGNATURE- ___ maemo-users mailing list maemo-users@maemo.org https://maemo.org/mailman/listinfo/maemo-users
Re: [maemo-users] Bluetooth stops working
Peter Westerström wrote: The same happens when I'm using my bluetooth keyboard. After a while I can no longer connect it. I'm using 3.2005.51-13. Have anyone else experienced similar problems? Yes. Never happened in older FWs with bluetooth but with 3.2005.51-13 it happened to me few times. Looks like the connection is dead but still open and cannot be closed (hcitool dc). Happens with my bluetooth keyboard. I thought I had bad batteries in my keyboard. BTW there is also something strange with wi-fi vs bluetooth in all firmwares I had so far see https://maemo.org/bugzilla/show_bug.cgi?id=326 looks like in heavy bluetooth usage (hcitool scan,sdptool browse) wi-fi connection drops. Frantisek ___ maemo-users mailing list maemo-users@maemo.org https://maemo.org/mailman/listinfo/maemo-users
Re: [maemo-users] Bluetooth stops working
I have been having the same problem with a bluetooth keyboard. What I found works is to change the device into "Offline mode". Then back to "Normal mode". There seems to be something conflicting between the WLAN and Bluetooth connections. -SeanOn 2006/2/8, at 上午 11:32, Peter Westerström wrote:I've been using gpsdrive with a bluetooth gps a couple of weeks now. I am experiencing the bluetooth connection to stop working after all between a few minutes to half an hour. After that happens no bluetooth commands works, rfcomm, hcitool scan reports nothing. The same happens when I'm using my bluetooth keyboard. After a while I can no longer connect it. I'm using 3.2005.51-13. Have anyone else experienced similar problems? ___ maemo-users mailing list maemo-users@maemo.org https://maemo.org/mailman/listinfo/maemo-users
[maemo-users] Bluetooth stops working
I've been using gpsdrive with a bluetooth gps a couple of weeks now. I am experiencing the bluetooth connection to stop working after all between a few minutes to half an hour. After that happens no bluetooth commands works, rfcomm, hcitool scan reports nothing. The same happens when I'm using my bluetooth keyboard. After a while I can no longer connect it. I'm using 3.2005.51-13. Have anyone else experienced similar problems? Maybe I should gain root access and try to restart bluetooth (hcitool hci0 down/up)? Peter Westerström [EMAIL PROTECTED] ___ maemo-users mailing list maemo-users@maemo.org https://maemo.org/mailman/listinfo/maemo-users
