Messages in this thread | | | Date | Mon, 10 Jun 2013 13:04:23 +0200 | From | Pavel Machek <> | Subject | Re: 3.10-rc: bluetooth disappeared on thinkpad x60 (regression) |
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Hi!
> > root@amd:~# hciconfig hci0 up > > Can't init device hci0: Operation not supported (95) > > root@amd:~# hcitool inq > > Inquiring ... > > Inquiry failed.: No such device > > root@amd:~# > > Could you take logs of the HCI traffic that happens when you try this. > You can use the btmon tool from BlueZ for it. Based on a quick look at > the code it seems like this particular error could only come if one of > the HCI commands used for device initialization fails.
Where can I get btmon? I tried
root@amd:~# apt-get install bluez-utils
but it is not there. (Can I just add printk somewhere?)
> The Bluetooth HCI init sequence is constructed using only commands that > should be expected to work assuming the hardware follows the > specification, but occasionally we do encounter Bluetooth hardware that > is broken in one way or another and needs a work around to the sequence. > E.g. recently we added a couple of extra commands to read some new > parameters from the hardware, commands that are mandatory for hardware > beyond a specific version (something we check for), but could be that > the chip on the X60 doesn't support these.
I don't expect strace is enough?
set_thread_area({entry_number:-1 -> 6, base_addr:0xb7624b20, limit:1048575, seg_32bit:1, contents:0, read_exec_only:0, limit_in_pages:1, seg_not_present:0, useable:1}) = 0 mprotect(0xb7766000, 8192, PROT_READ) = 0 mprotect(0xb77b2000, 4096, PROT_READ) = 0 munmap(0xb7782000, 76642) = 0 socket(PF_BLUETOOTH, SOCK_RAW, 1) = 3 ioctl(3, 0x800448d3, 0xb77cc420) = 0 ioctl(3, 0x400448c9, 0) = -1 EOPNOTSUPP (Operation not supported) write(2, "Can't init device hci0: Operatio"..., 53Can't init device hci0: Operation not supported (95) ) = 53 exit_group(1) = ? root@amd:~# btmon
Thanks, Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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