[Expired for linux (Ubuntu) because there has been no activity for 60
days.]
** Changed in: linux (Ubuntu)
Status: Incomplete => Expired
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** Tags removed: kernel-bug-exists-upstream
** Tags added: needs-apport-collect needs-upstream-testing
** Changed in: linux (Ubuntu)
Importance: Medium => Low
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Duplicate of
https://bugs.launchpad.net/ubuntu/+source/systemd/+bug/1759836
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https://bugs.launchpad.net/bugs/1767603
Title:
BCM2046B1 and hid2hci generates highcpu usage
Philip Taylor, please advise to all of the following:
1) While booted into default Ubuntu kernel 4.15 and having removed all
WORKAROUNDs, could you please execute the following from a terminal to gather
relevant debug logs:
apport-collect 1767603
2) The next step is to fully commit bisect from
ignore comment 3, i retested it, with kernel
Linux deepthought 4.17.0-041700rc3-generic #201804300800 SMP Mon Apr 30
08:03:00 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
and the bug clearly still exists. My apologies.
317 root 20 0 172284 130324 3280 R 81.2 3.3 6:30.80
** Attachment added: "Screenshot at 2018-05-05 11-17-38.png"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1767603/+attachment/5134287/+files/Screenshot%20at%202018-05-05%2011-17-38.png
** Tags added: kernel-fixed-upstream
** Changed in: linux (Ubuntu)
Status: Incomplete =>
It seems the kernel version
Linux deepthought 4.17.0-041700rc3-generic #201804300800 SMP Mon Apr 30
08:03:00 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
solves the issue, normal cpu usage with bluetooth turned on and device
connected, as identified in the below screenshots.
** Attachment added:
Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v4.16 kernel[0].
If this bug is fixed in the mainline kernel, please add the following
tag 'kernel-fixed-upstream'.
If the mainline kernel does not fix
I can confirm, using said screenshot, i turned off bluetooth in my bios,
and as top shows in the below screenshot the bug seems resolved, so the
bug is confirmed.
** Attachment added: "Screenshot at 2018-04-29 08-57-39.png"
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