Public bug reported:
Summary: Bluetooth sometimes does not work after resuming from suspend
Steps:
1. fwts s3 --s3-multiple=30 --s3-max-delay=5 --s3-min-delay=5
2. hcitool scan
Expected results: Can scan and connect to BT devices
Actual results: Can't scan and connect to BT devices
In kern.log:
Jul 3 00:33:48 1704 kernel: [ 2365.124561] PM: Finishing wakeup.
Jul 3 00:33:48 1704 kernel: [ 2365.156748] ------------[ cut here ]------------
Jul 3 00:33:48 1704 kernel: [ 2365.156764] WARNING: at
/build/buildd/linux-lts-quantal-3.5.0/drivers/base/firmware_class.c:597
request_firmware+0xb5/0xf0()
Jul 3 00:33:48 1704 kernel: [ 2365.156767] Hardware name: Inspiron 3137
Jul 3 00:33:48 1704 kernel: [ 2365.124564] Restarting tasks ...
Jul 3 00:33:48 1704 kernel: [ 2365.156770] Modules linked in: hid_multitouch
snd_hda_codec_realtek(O) snd_hda_codec_hdmi(O) snd_hda_intel(O)
snd_hda_codec(O) snd_hwdep coretemp kvm_intel snd_pcm kvm ghash_clmulni_intel
cryptd snd_seq_midi joydev snd_rawmidi dell_laptop dcdbas dell_wmi
sparse_keymap dm_multipath scsi_dh lib80211_crypt_tkip snd_seq_midi_event
microcode psmouse wl(PO) bnep snd_seq uvcvideo videobuf2_core videodev
videobuf2_vmalloc snd_timer cfg80211 snd_seq_device btusb videobuf2_memops
serio_raw parport_pc lib80211 rfcomm ppdev i915_hsw bluetooth snd soundcore
snd_page_alloc wmi drm_kms_helper drm i2c_algo_bit intel_ips video mac_hid lp
parport usbhid hid dm_raid45 xor dm_mirror dm_region_hash dm_log btrfs
zlib_deflate libcrc32c r8168(O) [last unloaded: hid_multitouch]
Jul 3 00:33:48 1704 kernel: [ 2365.156867] Pid: 25680, comm: kworker/0:2
Tainted: P W IO 3.5.0-22-generic #34~precise1-Ubuntu
Jul 3 00:33:48 1704 kernel: [ 2365.156870] Call Trace:
Jul 3 00:33:48 1704 kernel: [ 2365.156881] [<ffffffff81052c9f>]
warn_slowpath_common+0x7f/0xc0
Jul 3 00:33:48 1704 kernel: [ 2365.156887] [<ffffffff81052cfa>]
warn_slowpath_null+0x1a/0x20
Jul 3 00:33:48 1704 kernel: [ 2365.156894] [<ffffffff81437575>]
request_firmware+0xb5/0xf0
Jul 3 00:33:48 1704 kernel: [ 2365.156912] [<ffffffffa02ee470>] ?
hci_dev_open+0x290/0x290 [bluetooth]
Jul 3 00:33:48 1704 kernel: [ 2365.156922] [<ffffffffa0337b0a>]
btusb_load_firmware+0xba/0x240 [btusb]
Jul 3 00:33:48 1704 kernel: [ 2365.156936] [<ffffffffa02ee324>]
hci_dev_open+0x144/0x290 [bluetooth]
Jul 3 00:33:48 1704 kernel: [ 2365.156949] [<ffffffffa02ee48d>]
hci_power_on+0x1d/0x80 [bluetooth]
Jul 3 00:33:48 1704 kernel: [ 2365.156958] [<ffffffff81071bba>]
process_one_work+0x11a/0x480
Jul 3 00:33:48 1704 kernel: [ 2365.156964] [<ffffffff81072bd5>]
worker_thread+0x165/0x370
Jul 3 00:33:48 1704 kernel: [ 2365.156971] [<ffffffff81072a70>] ?
manage_workers.isra.29+0x130/0x130
Jul 3 00:33:48 1704 kernel: [ 2365.156977] [<ffffffff81077b73>]
kthread+0x93/0xa0
Jul 3 00:33:48 1704 kernel: [ 2365.156985] [<ffffffff816a8524>]
kernel_thread_helper+0x4/0x10
Jul 3 00:33:48 1704 kernel: [ 2365.156990] [<ffffffff81077ae0>] ?
flush_kthread_worker+0xb0/0xb0
Jul 3 00:33:48 1704 kernel: [ 2365.156996] [<ffffffff816a8520>] ?
gs_change+0x13/0x13
Jul 3 00:33:48 1704 kernel: [ 2365.156999] ---[ end trace 4ef11670192df83d ]---
Jul 3 00:33:48 1704 kernel: [ 2365.157006] usb 1-1.7: firmware:
fw-0a5c_21d7.hcd will not be loaded
Jul 3 00:33:48 1704 kernel: [ 2365.159451] Bluetooth: can't load firmware, may
not work correctly
Jul 3 00:33:48 1704 kernel: [ 2365.164446] done.
** Affects: hwe-next
Importance: Undecided
Status: New
** Affects: linux (Ubuntu)
Importance: Medium
Assignee: Ming Lei (tom-leiming)
Status: Confirmed
** Tags: blocks-hwcert-enablement
** Tags added: blocks-hwcert-enablement
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https://bugs.launchpad.net/bugs/1197616
Title:
Bluetooth sometimes does not work after resuming from suspend
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