Public bug reported:
DELL Latitude E5510 has a hardware switch to disable and enable
bluetooth and wifi devices ("hard blocking" in terms of rfkill). In
terms of wifi, this works great: After hard unblocking, the device
resumes back to normal operation without any manual intervention. That
was also working with bluetooth as of ubuntu 14.04, kernel 4.2.
In ubuntu 16.04, kernel 4.4.0-31-generic, together with systemd, this is
not working any more:
After hard blocking and unblocking
- bluetooth is not working at all
- the applet-indicator remains gray
- bluetooth cannot be enabled with the applet-indicator (see
https://storage6.static.itmages.com/i/16/0717/h_1468721829_7715160_83cd33bfba.png).
Applet-indicator remains gray
- rfkill list tells me that the kernel knows about the hard unblocking (turns
from "yes" to "no"):
rfkill list bluetooth
2: dell-bluetooth: Bluetooth
Soft blocked: no
Hard blocked: no
8: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
The device is a
sudo lsusb
Bus 002 Device 010: ID 413c:8187 Dell Computer Corp. DW375 Bluetooth Module
Workaround: After a
sudo service bluetooth restart
the bluetooth device turns back to normal operation and the applet-
indicator turns from gray to black (available).
Suggested fix: Make the workaround obsolete.
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: systemd 229-4ubuntu6
ProcVersionSignature: Ubuntu 4.4.0-31.50-generic 4.4.13
Uname: Linux 4.4.0-31-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CurrentDesktop: GNOME-Flashback:Unity
Date: Sun Jul 17 04:00:58 2016
InstallationDate: Installed on 2014-11-29 (595 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
MachineType: Dell Inc. Latitude E5510
ProcKernelCmdLine: BOOT_IMAGE=/@/boot/vmlinuz-4.4.0-31-generic
root=UUID=6408c2d9-1b60-43d7-9a7f-2dceeb40de28 ro rootflags=subvol=@ quiet
splash vt.handoff=7
SourcePackage: systemd
UpgradeStatus: Upgraded to xenial on 2016-06-15 (31 days ago)
dmi.bios.date: 12/06/2013
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A16
dmi.board.name: 023HKR
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias:
dmi:bvnDellInc.:bvrA16:bd12/06/2013:svnDellInc.:pnLatitudeE5510:pvr0001:rvnDellInc.:rn023HKR:rvrA00:cvnDellInc.:ct9:cvr:
dmi.product.name: Latitude E5510
dmi.product.version: 0001
dmi.sys.vendor: Dell Inc.
** Affects: systemd (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug xenial
** Description changed:
DELL Latitude E5510 has a hardware switch to disable and enable
- bluetooth and wifi devices ("hard blocking" in terms of rfkill. In terms
- of wifi, this works great: After hard unblocking the device resumes to
- normal operation with no manual intervention. That was also working with
- bluetooth as of 14.04, kernel 4.2.
+ bluetooth and wifi devices ("hard blocking" in terms of rfkill). In
+ terms of wifi, this works great: After hard unblocking, the device
+ resumes back to normal operation without any manual intervention. That
+ was also working with bluetooth as of ubuntu 14.04, kernel 4.2.
In ubuntu 16.04, kernel 4.4.0-31-generic, together with systemd, this is
not working any more:
After hard blocking and unblocking
- bluetooth is not working at all
- the applet-indicator remains gray
- bluetooth cannot be enabled with the applet-indicator (see
https://storage6.static.itmages.com/i/16/0717/h_1468721829_7715160_83cd33bfba.png).
Applet-indicator remains gray
- rfkill list tells me that the kernel knows about the hard unblocking (turns
from "yes" to "no"):
rfkill list bluetooth
2: dell-bluetooth: Bluetooth
- Soft blocked: no
- Hard blocked: no
+ Soft blocked: no
+ Hard blocked: no
8: hci0: Bluetooth
- Soft blocked: no
- Hard blocked: no
+ Soft blocked: no
+ Hard blocked: no
The device is a
sudo lsusb
Bus 002 Device 010: ID 413c:8187 Dell Computer Corp. DW375 Bluetooth Module
Workaround: After a
sudo service bluetooth restart
the bluetooth device turns back to normal operation and the applet-
indicator turns from gray to black (available).
Suggested fix: Make the workaround obsolete.
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: systemd 229-4ubuntu6
ProcVersionSignature: Ubuntu 4.4.0-31.50-generic 4.4.13
Uname: Linux 4.4.0-31-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
CurrentDesktop: GNOME-Flashback:Unity
Date: Sun Jul 17 04:00:58 2016
InstallationDate: Installed on 2014-11-29 (595 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64
(20140722.2)
MachineType: Dell Inc. Latitude E5510
ProcKernelCmdLine: BOOT_IMAGE=/@/boot/vmlinuz-4.4.0-31-generic
root=UUID=6408c2d9-1b60-43d7-9a7f-2dceeb40de28 ro rootflags=subvol=@ quiet
splash vt.handoff=7
SourcePackage: systemd
UpgradeStatus: Upgraded to xenial on 2016-06-15 (31 days ago)
dmi.bios.date: 12/06/2013
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A16
dmi.board.name: 023HKR
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias:
dmi:bvnDellInc.:bvrA16:bd12/06/2013:svnDellInc.:pnLatitudeE5510:pvr0001:rvnDellInc.:rn023HKR:rvrA00:cvnDellInc.:ct9:cvr:
dmi.product.name: Latitude E5510
dmi.product.version: 0001
dmi.sys.vendor: Dell Inc.
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https://bugs.launchpad.net/bugs/1603715
Title:
bluetooth unavailable after rfkill hard blocking and unblocking
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