Bluetooth fails after suspend/resume with bluez 4.95

[Michael Marley]

After updating to bluez 4.95 on my Oneiric x86_64 system, bluetooth no longer works after a suspend/resume cycle. Additionally, the suspend/resume cycle also sometimes causes "bluetoothd" to spin, taking up 100% of a CPU core until I kill it. Doing a "sudo service bluetooth restart" causes bluetooth to begin working again. Reverting to 4.94 also causes the problem to go away.

I have included an lsusb from my system. If I should provide any more data, please let me know.

[Sebastien Bacher (seb128)]

Could you try if that's still an issue with 4.96? Mathieu could you check if you get that as well? We should make sure it's just not broken with the update

[Mathieu Trudel-Lapierre (cyphermox)]

Well, from the look of things it's probably broken by the hid2hci udev rule for S3 resume. To make sure (and to figure out how we can fix it); could you please attach the output of the udev log and reproduce a suspend/resume cycle?

To get the udev logs:

/sbin/udevadm monitor

This will show all udev events in output, until killed of with Control-C or something, so it will log things across a suspend/resume.

Thanks in advance!

[Sebastien Bacher (seb128)]

do you still get the issue? could you reply to the comment?

[Michael Marley (mamarley)]

Oh, sorry. I must have missed the last notification. The problem is gone now.

[Tom Chiverton (bugs-launchpad-net-falkensweb)]

This happens on my raring install.

Running /etc/init.d/bluetooth stop && /etc/init.d/bluetooth start after a resume brings it back.

usb-devices says I have a
T: Bus=01 Lev=02 Prnt=02 Port=03 Cnt=02 Dev#= 4 Spd=12 MxCh= 0
D: Ver= 2.00 Cls=ff(vend.) Sub=01 Prot=01 MxPS=64 #Cfgs= 1
P: Vendor=413c ProdID=8197 Rev=01.12
S: Manufacturer=Broadcom Corp
S: Product=BCM20702A0

[Tom Chiverton (bugs-launchpad-net-falkensweb)]

udev logs :
falken@wopr:~/Documents$ sudo /sbin/udevadm monitor
monitor will print the received events for:
UDEV - the event which udev sends out after rule processing
KERNEL - the kernel uevent

KERNEL[4742.108418] change /devices/platform/regulatory.0 (platform)
UDEV [4742.115153] change /devices/platform/regulatory.0 (platform)
KERNEL[4749.051430] remove /devices/system/machinecheck/machinecheck1 (machinecheck)
UDEV [4749.051495] remove /devices/system/machinecheck/machinecheck2 (machinecheck)
KERNEL[4749.051538] remove /devices/system/machinecheck/machinecheck2 (machinecheck)
UDEV [4749.051578] remove /devices/system/machinecheck/machinecheck1 (machinecheck)
KERNEL[4749.051617] remove /devices/system/machinecheck/machinecheck3 (machinecheck)
KERNEL[4749.051652] add /devices/system/machinecheck/machinecheck1 (machinecheck)
KERNEL[4749.051688] add /devices/system/machinecheck/machinecheck2 (machinecheck)
KERNEL[4749.051728] add /devices/system/machinecheck/machinecheck3 (machinecheck)
KERNEL[4749.051811] change /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0A:00/power_supply/BAT0 (power_supply)
KERNEL[4749.051869] add /devices/virtual/watchdog/watchdog3 (watchdog)
KERNEL[4749.051920] remove /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.4/1-1.4:1.0/bluetooth/hci0/rfkill4 (rfkill)
KERNEL[4749.051968] remove /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.4/1-1.4:1.0/bluetooth/hci0 (bluetooth)
KERNEL[4749.052070] add /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.4/1-1.4:1.0/bluetooth/hci0 (bluetooth)
KERNEL[4749.052125] add /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.4/1-1.4:1.0/bluetooth/hci0/rfkill5 (rfkill)
UDEV [4749.052172] add /devices/system/machinecheck/machinecheck2 (machinecheck)
UDEV [4749.060130] change /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0A:00/power_supply/BAT0 (power_supply)
KERNEL[4749.060236] remove /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0A:00/power_supply/BAT0 (power_supply)
UDEV [4749.060318] remove /devices/system/machinecheck/machinecheck3 (machinecheck)
KERNEL[4749.060403] add /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0A:00/power_supply/BAT0 (power_supply)
UDEV [4749.060462] add /devices/system/machinecheck/machinecheck3 (machinecheck)
KERNEL[4749.060540] change /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0A:00/power_supply/BAT0 (power_supply)
UDEV [4749.060599] remove /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.4/1-1.4:1.0/bluetooth/hci0/rfkill4 (rfkill)
UDEV [4749.060690] remove /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0A:00/power_supply/BAT0 (power_supply)
UDEV [4749.060746] add /devices/virtual/watchdog/watchdog3 (watchdog)
UDEV [4749.060798] remove /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.4/1-1.4:1.0/bluetooth/hci0 (bluetooth)
UDEV [4749.060851] add /devices/system/machinecheck/machinecheck1 (machinecheck)
UDEV [4749.060901] add /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.4/1-1.4:1.0/bluetooth/hci0 (bluetooth)
UDEV [4749.063161] add /devices/pci0000:00/0000:00:1a.0/usb1/1-1/1-1.4/1-1.4:1.0/bluetooth/hci0/rfkill5 (rfkill)
UDEV [4749.073069] add /devices/LNXSYSTM:00/LNXSYBUS:00/PNP0C0A:00/power_supply/BAT0 (power_...

[Tom Chiverton (bugs-launchpad-net-falkensweb)]

Workaround from https://bugs.kde.org/show_bug.cgi?id=292165#c2 WFM