Hi, Here is what I got:
isaac@isaac-Inspiron-3583:~$ sudo gdb GNU gdb (Ubuntu 8.3-0ubuntu1) 8.3 Copyright (C) 2019 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-linux-gnu". Type "show configuration" for configuration details. For bug reporting instructions, please see: <http://www.gnu.org/software/gdb/bugs/>. Find the GDB manual and other documentation resources online at: <http://www.gnu.org/software/gdb/documentation/>. For help, type "help". Type "apropos word" to search for commands related to "word". (gdb) attach 794 Attaching to process 794 Reading symbols from target:/usr/local/libexec/bluetooth/bluetoothd... Reading symbols from target:/lib/x86_64-linux-gnu/libglib-2.0.so.0... (No debugging symbols found in target:/lib/x86_64-linux-gnu/libglib-2.0.so.0) Reading symbols from target:/lib/x86_64-linux-gnu/libdbus-1.so.3... (No debugging symbols found in target:/lib/x86_64-linux-gnu/libdbus-1.so.3) Reading symbols from target:/lib/x86_64-linux-gnu/libdl.so.2... Reading symbols from target:/usr/lib/debug//lib/x86_64-linux-gnu/libdl-2.30.so... Reading symbols from target:/lib/x86_64-linux-gnu/libc.so.6... Reading symbols from target:/usr/lib/debug//lib/x86_64-linux-gnu/libc-2.30.so... Reading symbols from target:/lib/x86_64-linux-gnu/libpcre.so.3... (No debugging symbols found in target:/lib/x86_64-linux-gnu/libpcre.so.3) Reading symbols from target:/lib/x86_64-linux-gnu/libpthread.so.0... Reading symbols from /usr/lib/debug/.build-id/7f/4107df84da625f1b445ade877e1e0ab6ba823d.debug... [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". Reading symbols from target:/lib/x86_64-linux-gnu/libsystemd.so.0... (No debugging symbols found in target:/lib/x86_64-linux-gnu/libsystemd.so.0) Reading symbols from target:/lib64/ld-linux-x86-64.so.2... (No debugging symbols found in target:/lib64/ld-linux-x86-64.so.2) Reading symbols from target:/lib/x86_64-linux-gnu/librt.so.1... Reading symbols from target:/usr/lib/debug//lib/x86_64-linux-gnu/librt-2.30.so... Reading symbols from target:/lib/x86_64-linux-gnu/liblzma.so.5... (No debugging symbols found in target:/lib/x86_64-linux-gnu/liblzma.so.5) Reading symbols from target:/lib/x86_64-linux-gnu/liblz4.so.1... (No debugging symbols found in target:/lib/x86_64-linux-gnu/liblz4.so.1) Reading symbols from target:/lib/x86_64-linux-gnu/libgcrypt.so.20... (No debugging symbols found in target:/lib/x86_64-linux-gnu/libgcrypt.so.20) Reading symbols from target:/lib/x86_64-linux-gnu/libgpg-error.so.0... (No debugging symbols found in target:/lib/x86_64-linux-gnu/libgpg-error.so.0) --Type <RET> for more, q to quit, c to continue without paging-- 0x00007f5bd69fbbf7 in __GI___poll (fds=0x55e26e5504c0, nfds=29, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29 29 ../sysdeps/unix/sysv/linux/poll.c: No such file or directory. (gdb) bt #0 0x00007f5bd69fbbf7 in __GI___poll (fds=0x55e26e5504c0, nfds=29, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29 #1 0x00007f5bd6b7daae in ?? () from target:/lib/x86_64-linux-gnu/libglib-2.0.so.0 #2 0x00007f5bd6b7de33 in g_main_loop_run () from target:/lib/x86_64-linux-gnu/libglib-2.0.so.0 #3 0x000055e26e1a2959 in mainloop_run () at src/shared/mainloop-glib.c:79 #4 0x000055e26e1a2dc0 in mainloop_run_with_signal (func=<optimized out>, user_data=0x0) at src/shared/mainloop-notify.c:201 #5 0x000055e26e10c5fe in main (argc=<optimized out>, argv=<optimized out>) at src/main.c:770 (gdb) -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to bluez in Ubuntu. https://bugs.launchpad.net/bugs/1871695 Title: Bluetoothd uses 100% of a CPU thread Status in bluez package in Ubuntu: Incomplete Bug description: Hi, I have a bluetooth keyboard that I use for my laptop, which runs Kubuntu 19.04. I noticed though, that a short while after connecting the keyboard, the CPU fan goes on and one of the threads is at 100%. If I open a terminal and type "top", it shows that a process called bluetoothd is taking 12% of the CPU power which is a full thread (100/8=12.5). I'm not sure what it's doing, but it doesn't require that much CPU power to work. If I end the process and restart it, the keyboard works fine and the CPU is calm until it happens again (about 20 minutes later). I reinstalled bluez and even tried recompiling from source, but the problem persists. My specs: Version of bluetoothd: 5.50 Linux Kernel: 5.3.0-46-generic KDE Plasma Version 5.16.5 Thank you, Isaac Cohen --- ProblemType: Bug ApportVersion: 2.20.11-0ubuntu8.8 Architecture: amd64 CurrentDesktop: KDE DistroRelease: Ubuntu 19.10 InstallationDate: Installed on 2019-12-15 (115 days ago) InstallationMedia: Kubuntu 19.10 "Eoan Ermine" - Release amd64 (20191017) InterestingModules: rfcomm bnep btusb bluetooth Lsusb: Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 003: ID 0c45:671e Microdia Integrated_Webcam_HD Bus 001 Device 002: ID 27c6:5301 HTMicroelectronics Goodix Fingerprint Device Bus 001 Device 004: ID 0cf3:e009 Qualcomm Atheros Communications Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: Dell Inc. Inspiron 3583 Package: bluez 5.50-0ubuntu5.1 [modified: lib/systemd/system/bluetooth.service lib/udev/hid2hci lib/udev/rules.d/97-hid2hci.rules] PackageArchitecture: amd64 ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.3.0-46-generic root=UUID=dad855bd-aa2f-4675-a8a6-6fa960525f41 ro quiet splash vt.handoff=7 ProcVersionSignature: Ubuntu 5.3.0-46.38-generic 5.3.18 Tags: eoan Uname: Linux 5.3.0-46-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip lpadmin lxd plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 05/30/2019 dmi.bios.vendor: Dell Inc. dmi.bios.version: 1.5.1 dmi.board.name: 0WHCP7 dmi.board.vendor: Dell Inc. dmi.board.version: A00 dmi.chassis.type: 10 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr1.5.1:bd05/30/2019:svnDellInc.:pnInspiron3583:pvr:rvnDellInc.:rn0WHCP7:rvrA00:cvnDellInc.:ct10:cvr: dmi.product.family: Inspiron dmi.product.name: Inspiron 3583 dmi.product.sku: 08CA dmi.sys.vendor: Dell Inc. hciconfig: hci0: Type: Primary Bus: USB BD Address: AC:D5:64:CC:54:D6 ACL MTU: 1024:8 SCO MTU: 50:8 UP RUNNING PSCAN ISCAN RX bytes:47194 acl:2390 sco:0 events:266 errors:0 TX bytes:3046 acl:50 sco:0 commands:163 errors:0 mtime.conffile..etc.dbus-1.system.d.bluetooth.conf: 2020-04-07T16:35:14.446062 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/bluez/+bug/1871695/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
