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[Bug 1562618] Re: whole OS freezes seemingly randomly
I think I got a little further!
The 4.4.0-21 seemed to work flawlessly, untill I found out that when enabling bluetooth I got the freezes.
It even worked fine at first, but because the sound was crappy I changed the headphones profile to A2DP and then the freezes started as soon as I had network traffic by file transfer!
I can reproduce the freeze now by simply ding a file transfer over the network (over wifi) and then enable bluetooth.
In the 4.4.0 and the 4.6.0 the bluetooth patch is present that tries to load the driver and the BCM.hcd file in /lib/firmware/brcm/ .
This explains why the 4.2.0 kernel :
4.2.0-040200-generic #201510260713 SMP Mon Oct 26 11:14:43 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
seems to run fine, because it does not load any bluetooth driver.
On that one I see from dmesg:
[ 7.274842] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 7.274854] Bluetooth: BNEP filters: protocol multicast
[ 7.274870] Bluetooth: BNEP socket layer initialized
On the 4.4.21 with the bt support I see:
[ 14.519814] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
[ 14.519821] Bluetooth: BNEP filters: protocol multicast
[ 14.519828] Bluetooth: BNEP socket layer initialized
[ 15.524279] Bluetooth: hci0: BCM: Reading local version info failed (-110)
[ 15.589273] Bluetooth: hci0: BCM: chip id 70
[ 15.605441] Bluetooth: hci0: BCM43142A
[ 15.605450] Bluetooth: hci0: BCM (001.001.011) build 0000
[ 16.218220] Bluetooth: hci0: BCM (001.001.011) build 0172
[ 16.235944] Bluetooth: hci0: Broadcom Bluetooth Device (43142)
The strange this is that it seems to have something to do with the audio profile.
It all worked fine with just crappy bluetooth audio until I tried to change the profile.
Strange there was that it didn't work neatly either, it required putting switches on and off and sometimes reloading the btusb driver.
Anyway, since I seem to have something reproducable, how can I proceed?
Thank you for the help!
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whole OS freezes seemingly randomly
Status in linux package in Ubuntu:
I had some random freezes of the whole operating system.
No caps lock response or terminal switching, nothng.
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-15-generic 4.4.0-15.31
ProcVersionSignature: Ubuntu 4.4.0-15.31-generic 4.4.6
Uname: Linux 4.4.0-15-generic x86_64
USER PID ACCESS COMMAND
/dev/snd/controlC0: vincent 1714 F.... pulseaudio
Date: Sun Mar 27 23:46:02 2016
InstallationDate: Installed on 2015-11-01 (147 days ago)
InstallationMedia: Ubuntu 14.04 LTS "Trusty Tahr" - Release amd64 (20140417)
MachineType: LENOVO 20332
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-15-generic.efi.signed root=UUID=44fb018f-3dbd-4eb6-ab9a-6668de8d13d2 ro quiet splash vt.handoff=7
UpgradeStatus: Upgraded to xenial on 2016-03-25 (2 days ago)
dmi.board.asset.tag: NO Asset Tag
dmi.chassis.asset.tag: NO Asset Tag
dmi.chassis.version: Lenovo Yoga 2 11
dmi.product.version: Lenovo Yoga 2 11
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