Probably still need to find the commit fixes the slowness.
As soon as you enable runtime power management for audio codec, it
should drop to 0%.
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Sorry for the delay.
I want to amend my previous comments:
with kernel 4.12, powertop still report Audio codec using 100% but my
laptop is not slow !
This happens only with kernel 4.10.
Regarding Ubuntu 16.10, I've upgraded my laptop from 16.04 to 16.10 and
then to 17.04 in a row, but I don't
So the issue didn't happen in 16.10 kernel (4.8)?
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https://bugs.launchpad.net/bugs/1690357
Title:
Computer very slow since update to Ubuntu 17.04
Status in linux package
Verified with Linux E6400 4.12.0-041200rc1-generic #201705131731 SMP Sat May 13
21:32:36 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
powertop show Audio codec hwC0D2: Intel, hwC0D1: Conexant and hwC0D0:
IDT at 100%
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Verified with Linux E6400 4.12.0-041200rc1-generic #201705131731 SMP Sat May 13
21:32:36 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
powertop show Audio codec hwC0D2: Intel, hwC0D1: Conexant and hwC0D0:
IDT at 100%
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Verified with Linux E6400 4.12.0-041200rc1-generic #201705131731 SMP Sat May 13
21:32:36 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux
powertop show Audio codec hwC0D2: Intel, hwC0D1: Conexant and hwC0D0:
IDT at 100%
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** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1690357
Title:
Computer very slow since update to Ubuntu 17.04
Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v4.12 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
Please note that apport-collect was made with disabled faulty modules
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https://bugs.launchpad.net/bugs/1690357
Title:
Computer very slow since update to Ubuntu 17.04
apport information
** Tags added: apport-collected zesty
** Description changed:
After upgrading my Dell Latitude E6400, computer was running very
slowly.
After few search, with powertop, I found that three modules was consuming lot
of CPU:
- snd_hda_codec_idt
-
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