Cannot use rfcomm as regular user. Permission denied.
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
bluez (Ubuntu) |
Confirmed
|
Medium
|
Unassigned |
Bug Description
After updating from 8.04 to 12.04 I cannot use rfcomm without sudo.
I've already added the user to group 'dialout' .
Temporary I tried to change udev.rules (KERNEL=
solve the problem so I removed it again.
Here the commands I used :
burki@orion:/$ hcitool scan
Scanning ...
00:12:6F:08:98:FF GEO LE-71 00001
burki@orion:/$ rfcomm connect 1 00:12:6F:08:98:FF
Can't open RFCOMM device: Permission denied
burki@orion:/$ ls -l /dev/rfcomm1
ls: cannot access /dev/rfcomm1: No such file or directory
burki@orion:/$ groups
burki adm dialout fax cdrom floppy tape sudo audio dip video plugdev fuse scanner lpadmin netdev sambashare
burki@orion:/$ sudo rfcomm connect 1 00:12:6F:08:98:FF
Connected /dev/rfcomm1 to 00:12:6F:08:98:FF on channel 1
Press CTRL-C for hangup
In another terminal while connection is running ...
burki@orion:/$ ls -l /dev/rfcomm1
crw-rw---- 1 root dialout 216, 1 Jun 19 09:01 /dev/rfcomm1
burki@orion:/$ UDEV_LOG=debug udevadm test $(udevadm info -q path -n rfcomm1)
(I've stolen this command from another bug report #570692. Output is very long. Please see attachment)
WORKAROUND: sudo chmod u+s /usr/bin/rfcomm
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-
ProcVersionSign
Uname: Linux 3.2.0-25-
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu8
Architecture: i386
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/
CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
Card0.Amixer.info:
Card hw:0 'PCH'/'HDA Intel PCH at 0xfe500000 irq 56'
Mixer name : 'Intel CougarPoint HDMI'
Components : 'HDA:10ec0887,
Controls : 49
Simple ctrls : 21
Date: Tue Jun 19 09:15:54 2012
HibernationDevice: RESUME=
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release i386 (20120423)
IwConfig:
lo no wireless extensions.
eth0 no wireless extensions.
MachineType: System manufacturer System Product Name
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=
RelatedPackageV
linux-
linux-
linux-firmware 1.79
RfKill:
0: hci0: Bluetooth
Soft blocked: no
Hard blocked: no
SourcePackage: linux
StagingDrivers: mei
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 10/21/2011
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0703
dmi.board.
dmi.board.name: P8Z68-V LX
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: Rev X.0x
dmi.chassis.
dmi.chassis.type: 3
dmi.chassis.vendor: Chassis Manufacture
dmi.chassis.
dmi.modalias: dmi:bvnAmerican
dmi.product.name: System Product Name
dmi.product.
dmi.sys.vendor: System manufacturer
Changed in linux (Ubuntu): | |
status: | New → Confirmed |
description: | updated |
tags: | added: regression-release |
Changed in linux (Ubuntu): | |
importance: | Undecided → Medium |
importance: | Medium → Low |
tags: | added: bios-outdated-4105 |
Changed in linux (Ubuntu): | |
status: | Confirmed → Incomplete |
tags: | added: vivid |
Changed in bluez (Ubuntu): | |
importance: | Undecided → Medium |
tags: |
added: jaunty removed: vivid |
tags: | added: xenial |
summary: |
- Ubuntu 12.04, i386, cannot use rfcomm as regular user. Permission - denied. + Cannot use rfcomm as regular user. Permission denied. |
Hello again ...
I've found a workaround.
After setting the SUID bit for rfcomm with the following command :
sudo chmod u+s /usr/bin/rfcomm
I can use rfcomm as regular user.