On Tue, Jul 26, 2016 at 12:34 PM, Chris Murphy <li...@colorremedies.com> wrote:
> On Mon, Jul 25, 2016 at 12:07 PM, Rick Stevens <ri...@alldigital.com> > wrote: > > On 07/23/2016 09:00 AM, Chris Murphy wrote: > >> On Fri, Jul 22, 2016 at 2:37 PM, Tod Merley <todbo...@gmail.com> wrote: > >>> .. so what mods are loaded to handle wifi and bluetooth ... > >> > >> 03:00.0 Network controller [0280]: Broadcom Corporation BCM4331 > >> 802.11a/b/g/n [14e4:4331] (rev 02) > >> Subsystem: Broadcom Corporation BCM4331 802.11a/b/g/n [14e4:4331] > >> [...snip...] > >> Kernel driver in use: bcma-pci-bridge > >> Kernel modules: bcma > >> > >> lspci doesn't list Bluetooth. I'm not sure what driver is being used, > >> but I suspect one of these: > >> > >> btusb 45056 0 > >> snd_hda_codec_hdmi 45056 1 > >> btrtl 16384 1 btusb > >> btbcm 16384 1 btusb > >> btintel 16384 1 btusb > >> bluetooth 491520 36 > bnep,hidp,btbcm,btrtl,btusb,rfcomm,btintel > >> > >> It looks like bluetooth module just drags in generic, Intel, Broadcom, > >> and Realtek device drivers, whether the hardware is present or not. > >> > >> I was almost ready to give up on b43/bcma because I don't get even get > >> 802.11n support with that driver. What I found on Broadcom's site for > >> Linux is hybrid-v35_64-nodebug-pcoem-6_30_223_271.tar.gz but I haven't > >> gone down that rabbit hole yet. > > > > Try doing googling for this issue. I looked and the bcma driver doesn't > > have a bluetooth co-exist flag like the iwlwifi does. I was going to > > suggest making sure that was on, but since I don't see that option it'd > > be useless. > > > > According to Broadcom: > > > > Do Bluetooth wireless technology and IEEE 802.11 interfere with each > other? > > > > Bluetooth wireless technology and 802.11b/g both use the 2.4 GHz ISM > > (Industrial, Scientific, Medical) unlicensed spectrum, and in some > > configurations can interfere with each other. If the Bluetooth and > > 802.11b/g antennas are more than 3 meters apart, however, interface in > > minimal. Co-existence schemes such as adaptive frequency hopping have > > been implemented to address potential interference issues and Broadcom > > has introduced its InConcert® coexistence technology, which mitigates > > interference problems. > > > > Hmmm. Apparently not in your case. Sorry. > > > My guess is Apple's drivers for macOS and Windows do this adaptive > hopping, and the open source drivers do not. Or at least, they can > still conflict some of the time or in a manner that just causes > bluetooth devices to get dropped and not recover until the wifi radio > is turned off. > With a laptop the two most common use-cases are "mobile" where you are working unplugged/mobile with the laptops's keyboard and pointing device, and more stationary situations where you are plugged in to mains and may have access to a network jack, so many users won't need wifi and bluetooth at the same time. Where I work, there is no wifi but iMacs are purchased with bluetooth mouse and keyboard. With a bunch of systems in a cubicle farm, bluetooth is not reliable, so users switch to USB mouse and keyboard. > > But there are other problems with the b43 situation where it just > doesn't get much dev attention anymore, and for Pete's sake I'm stuck > on 802.11g, not even n is possible with b43. > > > -- > Chris Murphy > -- > users mailing list > users@lists.fedoraproject.org > To unsubscribe or change subscription options: > https://lists.fedoraproject.org/admin/lists/users@lists.fedoraproject.org > Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct > Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines > Have a question? Ask away: http://ask.fedoraproject.org > -- George N. White III <aa...@chebucto.ns.ca> Head of St. Margarets Bay, Nova Scotia
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