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* [Bug 199035] BCM2046B1 and hid2hci generates highcpu usage due to udev since 4.14 kernel
       [not found] <bug-199035-62941@https.bugzilla.kernel.org/>
@ 2018-10-18 17:53 ` bugzilla-daemon
  2018-12-22 17:54 ` bugzilla-daemon
                   ` (2 subsequent siblings)
  3 siblings, 0 replies; 4+ messages in thread
From: bugzilla-daemon @ 2018-10-18 17:53 UTC (permalink / raw)
  To: linux-bluetooth

https://bugzilla.kernel.org/show_bug.cgi?id=199035

brunosouza (brunofcosouza@gmail.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |brunofcosouza@gmail.com

--- Comment #9 from brunosouza (brunofcosouza@gmail.com) ---
(In reply to Y S Gupta from comment #8)


Same here. I used the commands from Szymon to find out what was going on and
got the Synaptics Touchpad, too.

The workaround by Y S Gupta works like a charm. Put it in a startup script and
everything is ok. THANK YOU!

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* [Bug 199035] BCM2046B1 and hid2hci generates highcpu usage due to udev since 4.14 kernel
       [not found] <bug-199035-62941@https.bugzilla.kernel.org/>
  2018-10-18 17:53 ` [Bug 199035] BCM2046B1 and hid2hci generates highcpu usage due to udev since 4.14 kernel bugzilla-daemon
@ 2018-12-22 17:54 ` bugzilla-daemon
  2019-01-08 18:42 ` bugzilla-daemon
  2019-01-08 19:38 ` bugzilla-daemon
  3 siblings, 0 replies; 4+ messages in thread
From: bugzilla-daemon @ 2018-12-22 17:54 UTC (permalink / raw)
  To: linux-bluetooth

https://bugzilla.kernel.org/show_bug.cgi?id=199035

--- Comment #10 from Tournier Mathieu (mathieutournier@gmail.com) ---
Command from Y S Gupta fixed to high cpu load for me.
As this is just a workaround. I suppose this bug should remain open.
Thanks for this, i can now reuse my bluetooth card.

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^ permalink raw reply	[flat|nested] 4+ messages in thread

* [Bug 199035] BCM2046B1 and hid2hci generates highcpu usage due to udev since 4.14 kernel
       [not found] <bug-199035-62941@https.bugzilla.kernel.org/>
  2018-10-18 17:53 ` [Bug 199035] BCM2046B1 and hid2hci generates highcpu usage due to udev since 4.14 kernel bugzilla-daemon
  2018-12-22 17:54 ` bugzilla-daemon
@ 2019-01-08 18:42 ` bugzilla-daemon
  2019-01-08 19:38 ` bugzilla-daemon
  3 siblings, 0 replies; 4+ messages in thread
From: bugzilla-daemon @ 2019-01-08 18:42 UTC (permalink / raw)
  To: linux-bluetooth

https://bugzilla.kernel.org/show_bug.cgi?id=199035

John (jgwphd@yahoo.com) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jgwphd@yahoo.com

--- Comment #11 from John (jgwphd@yahoo.com) ---
When I boot up every day without exception, my machine starts up with one of
the CPU cores running at 100%. I see lots of posts on other forums (Unbuntu 
etc) going back over a year or more blaming touchpads or nvidia or WiFi. Some
even say they can't use their thumb drive if it isn't plugged in when they
boot. The problem also mimics a defective thumb drive where you plug it in and
Ubuntu doesn't see it (because systemd-udevd doesn't have the cycles to process
the newly plugged in USB device). Losing one core makes my machine slower but
not too noticeably so. I do see much longer boot times and sometime it will
hang entirely during boot. I assume a single core or dual core machine will be
drastically slowed down or even unusable. When I search I find other non-ubuntu
os's complaining about similar problems.

I have 18.10 running on my Dell studio XPS with an AMD® Phenom(tm) ii x4 945
processor × 4 and AMD® Juniper graphics. It's a quad-core 64 bit machine. I
have wireless mouse and keyboard for Logitech. I have a pretty vanilla set-up.
I DO NOT have a touchpad or nvidia or WiFi!

I can verify that the problem can be managed by stopping and starting
systemd-udevd. I used the following commands, suggested in this bug report, in
sequence in the terminal which corrects the problem until I boot again. 

sudo systemctl stop systemd-udevd systemd-udevd-kernel.socket
systemd-udevd-control.socket

sudo systemctl start systemd-udevd systemd-udevd-kernel.socket
systemd-udevd-control.socket

Also the problem will "sometimes" re-appear by plugging in a thumb drive! 

This is a serious kernel problem and can manifest its presence in a number of
ways depending on your hardware configuration. 

This is a very very very annoying problem will someone PLEASE fix it soon!
...did I mention that this is a serious problem impacting many people!

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* [Bug 199035] BCM2046B1 and hid2hci generates highcpu usage due to udev since 4.14 kernel
       [not found] <bug-199035-62941@https.bugzilla.kernel.org/>
                   ` (2 preceding siblings ...)
  2019-01-08 18:42 ` bugzilla-daemon
@ 2019-01-08 19:38 ` bugzilla-daemon
  3 siblings, 0 replies; 4+ messages in thread
From: bugzilla-daemon @ 2019-01-08 19:38 UTC (permalink / raw)
  To: linux-bluetooth

https://bugzilla.kernel.org/show_bug.cgi?id=199035

--- Comment #12 from John (jgwphd@yahoo.com) ---
BTW, add to my previous comment an additional symptom:  sometimes my system
will "appear to hang" entirely during boot (but it will power down normally by
briefly touching the power off button when it "looks like" it is stuck).

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2018-10-18 17:53 ` [Bug 199035] BCM2046B1 and hid2hci generates highcpu usage due to udev since 4.14 kernel bugzilla-daemon
2018-12-22 17:54 ` bugzilla-daemon
2019-01-08 18:42 ` bugzilla-daemon
2019-01-08 19:38 ` bugzilla-daemon

Linux-Bluetooth Archive on lore.kernel.org

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