** Tags added: cscc
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https://bugs.launchpad.net/bugs/1598394
Title:
intel_pstate has too aggressive frequency selection
Status in linux package in Ubuntu:
Confirmed
Bug
I recently bought a new Lenovo IdeaPad 520-15IKB 81BF005JRK laptop and
installed Ubuntu (18.10 downloaded a few days ago, during install, updates were
installed). But I cannot work with it as immediately after turning on the
laptop, the processor (i8520u) on all cores operates at maximum frequen
Notable upstream bugs with related issues
alegidly patched: https://bugzilla.kernel.org/show_bug.cgi?id=115771
maybe not patched yet: https://bugzilla.kernel.org/show_bug.cgi?id=93521
Workaround (to help other who find this bug)
Add `intel_pstate=disable` to `GRUB_CMDLINE_LINUX_DEFAULT` in
/etc/
The bug exists in the upstream kernel 4.7-rc6.
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
** Tags added: kernel-bug-exists-upstream
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Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v4.7 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 th
** Attachment added: "pstate_snb"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1598394/+attachment/4694151/+files/pstate_snb
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https://bugs.launchpad.net/bugs/15983
Added attachment
** Attachment added: "lspci-vnvn.log"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1598394/+attachment/4694150/+files/lspci-vnvn.log
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