Red Hat Bugzilla – Bug 212865
USB Bluetooth dongle causes CPU temperature rise
Last modified: 2008-08-02 19:40:36 EDT
Description of problem:
Inserting a usb bluetooth dongle causes the temperature of the cpu to rise from
a steady 49c to 69c within a minute.
Version-Release number of selected component (if applicable):
Linux medusa 2.6.18-1.2798.fc6 #1 SMP Mon Oct 16 14:37:32 EDT 2006 i686 i686
Steps to Reproduce:
1.Insert bluetooth dongle
2.Monitor cpu temperature
Observe cpu temperature rise of 20c.
Under no additional load cpu temperatre would not be expected to rise.
The temperatures observed are from ACPI thermal zone info. Running top reveals
no unusual usage of user or system resources; the cpu is virtually idle.
The usb chipset from lspci:
00:02.0 USB Controller: ALi Corporation USB 1.1 Controller (rev 03)
The bluetooth dongle from lsusb:
Bus 001 Device 008: ID 0a5c:200a Broadcom Corp. (manufacturer Sitecom).
I'm reviewing this bug as part of the kernel bug triage project, an attempt to
isolate current bugs in the Fedora kernel.
I am CC'ing myself to this bug, however this version of Fedora is no longer
Please attempt to reproduce this bug with a current version of Fedora (presently
Fedora 8). If the bug no longer exists, please close the bug or I'll do so in a
few days if there is no further information lodged.
Thanks for using Fedora!
Closing per previous comment. If you can provide the requested information,
please feel free to re-open this bug.