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[Leonid <pilleo19@xxxxxxxxx>]

I have Samsung bluetooth keyboard bkb10 and laptop with bcm 43142
bluetooth adapter. Keyboard is very laggy(unsusable), and also
connection drops frequetly (i guess usually it is kernel bug causing
drops, it drops every time after some intel i915 bug in kernel, but not
always after that intel bug). So i tried to install older bluez from
bluez.org, and it works great now! It is stable on 5.27 Bluez, but
starting from 5.28 keyboard is unusable. Try it, maybe it will help you
also.

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https://bugs.launchpad.net/bugs/1454450

Title:
  Bluetooth mouse laggy and erratic

Status in bluez package in Ubuntu:
  Confirmed
Status in linux-firmware package in Ubuntu:
  Confirmed

Bug description:
  I installed Ubuntu 15.04 (64 bit) on a DELL XPS 13 (model 9343, bios
  A03) notebook. I use a DELL bluetooth mouse but sometimes it behaves
  erratically (laggy, jumpy). The problem happens after a few (sometimes
  one) suspend and resume. I am attaching below some info on my system.
  Thank you.

  cribari@darwin4:~$ uname -a; lspci -nnk | grep -iA2 net; lsusb; dmesg | grep -i bluetooth; dmesg | grep -i firmware; lsmod | grep bluetooth
  Linux darwin4 3.19.0-17-generic #17-Ubuntu SMP Wed May 6 16:46:12 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
  02:00.0 Network controller [0280]: Broadcom Corporation BCM4352 802.11ac Wireless Network Adapter [14e4:43b1] (rev 03)
   Subsystem: Dell Device [1028:0019]
   Kernel driver in use: wl
  Bus 003 Device 002: ID 8087:8001 Intel Corp.
  Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
  Bus 001 Device 004: ID 0c45:670c Microdia
  Bus 001 Device 003: ID 04f3:20d0 Elan Microelectronics Corp.
  Bus 001 Device 002: ID 0a5c:216f Broadcom Corp.
  Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
  [    2.174367] Bluetooth: Core ver 2.20
  [    2.174669] Bluetooth: HCI device and connection manager initialized
  [    2.174792] Bluetooth: HCI socket layer initialized
  [    2.174795] Bluetooth: L2CAP socket layer initialized
  [    2.175449] Bluetooth: SCO socket layer initialized
  [    2.592936] Bluetooth: hci0: BCM: patching hci_ver=06 hci_rev=1624 lmp_ver=06 lmp_subver=220e
  [    3.203438] Bluetooth: hci0: BCM: firmware hci_ver=06 hci_rev=1624 lmp_ver=06 lmp_subver=220e
  [    3.542418] Bluetooth: BNEP (Ethernet Emulation) ver 1.3
  [    3.542421] Bluetooth: BNEP filters: protocol multicast
  [    3.542425] Bluetooth: BNEP socket layer initialized
  [    3.551641] Bluetooth: RFCOMM TTY layer initialized
  [    3.551649] Bluetooth: RFCOMM socket layer initialized
  [    3.551654] Bluetooth: RFCOMM ver 1.11
  [   26.569283] Bluetooth: HIDP (Human Interface Emulation) ver 1.2
  [   26.569287] Bluetooth: HIDP socket layer initialized
  [   26.576971] input: Dell Travel Mouse WM524 as /devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.0/bluetooth/hci0/hci0:11/0005:046D:B00E.0003/input/input15
  [   26.577172] hid-generic 0005:046D:B00E.0003: input,hidraw2: BLUETOOTH HID v8.00 Mouse [Dell Travel Mouse WM524] on ac:d1:b8:c0:6f:5c
  [   72.448281] input: Dell Travel Mouse WM524 as /devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.0/bluetooth/hci0/hci0:12/0005:046D:B00E.0004/input/input16
  [   72.448526] hid-generic 0005:046D:B00E.0004: input,hidraw2: BLUETOOTH HID v8.00 Mouse [Dell Travel Mouse WM524] on ac:d1:b8:c0:6f:5c
  [ 2994.842547] input: Dell Travel Mouse WM524 as /devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.0/bluetooth/hci0/hci0:13/0005:046D:B00E.0005/input/input17
  [ 2994.842810] hid-generic 0005:046D:B00E.0005: input,hidraw2: BLUETOOTH HID v8.00 Mouse [Dell Travel Mouse WM524] on ac:d1:b8:c0:6f:5c
  [ 3694.214037] Bluetooth: hci0: BCM: patching hci_ver=06 hci_rev=1000 lmp_ver=06 lmp_subver=220e
  [ 3694.861578] Bluetooth: hci0: BCM: firmware hci_ver=06 hci_rev=1624 lmp_ver=06 lmp_subver=220e
  [ 3811.777260] input: Dell Travel Mouse WM524 as /devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.0/bluetooth/hci0/hci0:11/0005:046D:B00E.0006/input/input20
  [ 3811.777571] hid-generic 0005:046D:B00E.0006: input,hidraw2: BLUETOOTH HID v8.00 Mouse [Dell Travel Mouse WM524] on ac:d1:b8:c0:6f:5c
  [ 5579.876192] Modules linked in: huawei_cdc_ncm cdc_wdm cdc_ncm option usb_wwan usbserial usbnet mii uas usb_storage hid_generic hidp nvram msr binfmt_misc rfcomm bnep nls_iso8859_1 intel_rapl iosf_mbi x86_pkg_temp_thermal dell_wmi sparse_keymap intel_powerclamp coretemp kvm_intel kvm crct10dif_pclmul dell_laptop dcdbas btusb crc32_pclmul bluetooth ghash_clmulni_intel hid_multitouch aesni_intel aes_x86_64 lrw uvcvideo gf128mul videobuf2_vmalloc glue_helper wl(POE) videobuf2_memops ablk_helper videobuf2_core cryptd v4l2_common videodev media joydev i915_bpo serio_raw i915 dell_led rtsx_pci_ms intel_ips memstick snd_hda_codec_realtek snd_soc_rt286 snd_hda_codec_generic cfg80211 snd_soc_core drm_kms_helper mei_me lpc_ich shpchp mei snd_compress snd_hda_intel snd_hda_controller drm snd_hda_codec i2c_algo_bit
  [ 5579.876223] Workqueue: hci0 hci_power_on [bluetooth]
  [ 5579.876261]  [<ffffffffc0e09561>] hci_dev_do_open+0xe1/0xa90 [bluetooth]
  [ 5579.876266]  [<ffffffffc0e0a6f0>] hci_power_on+0x40/0x200 [bluetooth]
  [ 5579.876284] bluetooth hci0: firmware: brcm/BCM20702A0-0a5c-216f.hcd will not be loaded
  [ 5579.876286] Bluetooth: hci0: BCM: patch brcm/BCM20702A0-0a5c-216f.hcd not found
  [ 9442.157757] Modules linked in: huawei_cdc_ncm cdc_wdm cdc_ncm option usb_wwan usbserial usbnet mii uas usb_storage hid_generic hidp nvram msr binfmt_misc rfcomm bnep nls_iso8859_1 intel_rapl iosf_mbi x86_pkg_temp_thermal dell_wmi sparse_keymap intel_powerclamp coretemp kvm_intel kvm crct10dif_pclmul dell_laptop dcdbas btusb crc32_pclmul bluetooth ghash_clmulni_intel hid_multitouch aesni_intel aes_x86_64 lrw uvcvideo gf128mul videobuf2_vmalloc glue_helper wl(POE) videobuf2_memops ablk_helper videobuf2_core cryptd v4l2_common videodev media joydev i915_bpo serio_raw i915 dell_led rtsx_pci_ms intel_ips memstick snd_hda_codec_realtek snd_soc_rt286 snd_hda_codec_generic cfg80211 snd_soc_core drm_kms_helper mei_me lpc_ich shpchp mei snd_compress snd_hda_intel snd_hda_controller drm snd_hda_codec i2c_algo_bit
  [ 9442.157787] Workqueue: hci0 hci_power_on [bluetooth]
  [ 9442.157810]  [<ffffffffc0e09561>] hci_dev_do_open+0xe1/0xa90 [bluetooth]
  [ 9442.157815]  [<ffffffffc0e0a6f0>] hci_power_on+0x40/0x200 [bluetooth]
  [ 9442.157844] bluetooth hci0: firmware: brcm/BCM20702A0-0a5c-216f.hcd will not be loaded
  [ 9442.157846] Bluetooth: hci0: BCM: patch brcm/BCM20702A0-0a5c-216f.hcd not found
  [ 9498.411674] input: Dell Travel Mouse WM524 as /devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.0/bluetooth/hci0/hci0:11/0005:046D:B00E.0007/input/input25
  [ 9498.411880] hid-generic 0005:046D:B00E.0007: input,hidraw2: BLUETOOTH HID v8.00 Mouse [Dell Travel Mouse WM524] on ac:d1:b8:c0:6f:5c
  [10589.318323] input: Dell Travel Mouse WM524 as /devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.0/bluetooth/hci0/hci0:11/0005:046D:B00E.0008/input/input26
  [10589.318513] hid-generic 0005:046D:B00E.0008: input,hidraw2: BLUETOOTH HID v8.00 Mouse [Dell Travel Mouse WM524] on ac:d1:b8:c0:6f:5c
  [10777.090455] input: Dell Travel Mouse WM524 as /devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.0/bluetooth/hci0/hci0:11/0005:046D:B00E.0009/input/input27
  [10777.090668] hid-generic 0005:046D:B00E.0009: input,hidraw2: BLUETOOTH HID v8.00 Mouse [Dell Travel Mouse WM524] on ac:d1:b8:c0:6f:5c
  [10813.977023] input: Dell Travel Mouse WM524 as /devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.0/bluetooth/hci0/hci0:11/0005:046D:B00E.000A/input/input28
  [10813.977156] hid-generic 0005:046D:B00E.000A: input,hidraw2: BLUETOOTH HID v8.00 Mouse [Dell Travel Mouse WM524] on ac:d1:b8:c0:6f:5c
  [10945.835463] Bluetooth: hci0: BCM: patching hci_ver=06 hci_rev=1000 lmp_ver=06 lmp_subver=220e
  [10946.457962] Bluetooth: hci0: BCM: firmware hci_ver=06 hci_rev=1624 lmp_ver=06 lmp_subver=220e
  [    3.203438] Bluetooth: hci0: BCM: firmware hci_ver=06 hci_rev=1624 lmp_ver=06 lmp_subver=220e
  [ 3694.861578] Bluetooth: hci0: BCM: firmware hci_ver=06 hci_rev=1624 lmp_ver=06 lmp_subver=220e
  [ 5579.876160] WARNING: CPU: 2 PID: 6270 at /build/buildd/linux-3.19.0/drivers/base/firmware_class.c:1126 _request_firmware+0x72e/0xbd0()
  [ 5579.876238]  [<ffffffff815196ca>] ? _request_firmware+0x5a/0xbd0
  [ 5579.876241]  [<ffffffff81519d9e>] _request_firmware+0x72e/0xbd0
  [ 5579.876243]  [<ffffffff8151a275>] request_firmware+0x35/0x50
  [ 5579.876284] bluetooth hci0: firmware: brcm/BCM20702A0-0a5c-216f.hcd will not be loaded
  [ 9442.157726] WARNING: CPU: 3 PID: 9280 at /build/buildd/linux-3.19.0/drivers/base/firmware_class.c:1126 _request_firmware+0x72e/0xbd0()
  [ 9442.157798]  [<ffffffff815196ca>] ? _request_firmware+0x5a/0xbd0
  [ 9442.157800]  [<ffffffff81519d9e>] _request_firmware+0x72e/0xbd0
  [ 9442.157801]  [<ffffffff8151a275>] request_firmware+0x35/0x50
  [ 9442.157844] bluetooth hci0: firmware: brcm/BCM20702A0-0a5c-216f.hcd will not be loaded
  [10946.457962] Bluetooth: hci0: BCM: firmware hci_ver=06 hci_rev=1624 lmp_ver=06 lmp_subver=220e
  bluetooth             491520  23 bnep,hidp,btusb,rfcomm
  cribari@darwin4:~$

  cribari@darwin4:~$ sudo service bluetooth status
  [sudo] password for cribari:
  ● bluetooth.service - Bluetooth service
     Loaded: loaded (/lib/systemd/system/bluetooth.service; enabled; vendor preset: enabled)
     Active: active (running) since Ter 2015-05-12 14:21:44 BRT; 2h 48min left
   Main PID: 683 (bluetoothd)
     CGroup: /system.slice/bluetooth.service
             └─683 /usr/sbin/bluetoothd -n

  Mai 12 11:22:52 darwin4 bluetoothd[683]: Endpoint unregistered: sender=:1.40...e
  Mai 12 11:22:52 darwin4 bluetoothd[683]: Endpoint unregistered: sender=:1.40...k
  Mai 12 11:22:52 darwin4 bluetoothd[683]: bluetoothd[683]: Endpoint unregiste...G
  Mai 12 11:22:52 darwin4 bluetoothd[683]: bluetoothd[683]: Endpoint unregiste...S
  Mai 12 11:22:52 darwin4 bluetoothd[683]: bluetoothd[683]: Endpoint unregiste...e
  Mai 12 11:22:52 darwin4 bluetoothd[683]: bluetoothd[683]: Endpoint unregiste...k
  Mai 12 11:23:18 darwin4 bluetoothd[683]: bluetoothd[683]: Unknown command co...7
  Mai 12 11:23:18 darwin4 bluetoothd[683]: Unknown command complete for opcode 37
  Mai 12 11:23:23 darwin4 bluetoothd[683]: bluetoothd[683]: Unknown command co...7
  Mai 12 11:23:23 darwin4 bluetoothd[683]: Unknown command complete for opcode 37
  Hint: Some lines were ellipsized, use -l to show in full.

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: bluez 4.101-0ubuntu25
  ProcVersionSignature: Ubuntu 3.19.0-17.17-generic 3.19.6
  Uname: Linux 3.19.0-17-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.17.2-0ubuntu1
  Architecture: amd64
  Date: Tue May 12 20:12:13 2015
  ExecutablePath: /usr/sbin/bluetoothd
  InstallationDate: Installed on 2015-04-23 (19 days ago)
  InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
  InterestingModules: rfcomm bnep btusb bluetooth
  MachineType: Dell Inc. XPS 13 9343
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-17-generic.efi.signed root=UUID=b1bc4e7b-3e8b-45bd-9b9b-cd95b9cbbec1 ro quiet splash i915.i915_enable_rc6=0 vt.handoff=7
  SourcePackage: bluez
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 03/25/2015
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A03
  dmi.board.name: 0310JH
  dmi.board.vendor: Dell Inc.
  dmi.board.version: A00
  dmi.chassis.type: 9
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA03:bd03/25/2015:svnDellInc.:pnXPS139343:pvr01:rvnDellInc.:rn0310JH:rvrA00:cvnDellInc.:ct9:cvr:
  dmi.product.name: XPS 13 9343
  dmi.product.version: 01
  dmi.sys.vendor: Dell Inc.
  hciconfig:
   hci0:	Type: BR/EDR  Bus: USB
    BD Address: AC:D1:B8:C0:6F:5C  ACL MTU: 1021:8  SCO MTU: 64:1
    UP RUNNING PSCAN
    RX bytes:1491155 acl:74655 sco:0 events:8833 errors:0
    TX bytes:38138 acl:88 sco:0 commands:253 errors:0

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