** Tags added: ubuntu-certified
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https://bugs.launchpad.net/bugs/1840454
Title:
kernel 5.2 disallows thermald's direct MSR writes
Status in linux package in Ubuntu:
C
On Sat, 2019-08-17 at 05:24 +, Anthony Wong wrote:
> On Sat, Aug 17, 2019 at 1:05 AM Srinivas Pandruvada <
> srinivas.pandruv...@linux.intel.com> wrote:
>
> > The patch for changing TCC offset can only be in for 5.4 kernel.
> > Then
> > there will be no MSR access.
> >
>
> Is it https://lkml
On Sat, Aug 17, 2019 at 1:05 AM Srinivas Pandruvada <
srinivas.pandruv...@linux.intel.com> wrote:
> The patch for changing TCC offset can only be in for 5.4 kernel. Then
> there will be no MSR access.
>
Is it https://lkml.org/lkml/2019/7/22/1286? Should it work when system is
locked down?
> So
Noteworthy maybe is that this did not seem to happen in 5.2.0-9, but
that one complained about 1b0
Jul 27 16:44:16 jak-t480s kernel: msr: Direct access to MSR 1b0
but far less often :D
** Changed in: linux (Ubuntu)
Status: Incomplete => New
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apport information
** Tags added: apport-collected eoan third-party-packages
** Description changed:
thermald/kernel are spamming dmesg now because MSR write is disallowed.
jak@jak-t480s:~:master$ journalctl -b --since=today | grep msr | wc -l
8688
jak@jak-t480s:~:master$ journalct
The patch for changing TCC offset can only be in for 5.4 kernel. Then there
will be no MSR access.
So the option is to take out of mainline kernel patch to avoid this or avoid
workaround option.
I don't know if there are any other options.
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Good point.
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https://bugs.launchpad.net/bugs/1840454
Title:
kernel 5.2 disallows thermald's direct MSR writes
Status in linux package in Ubuntu:
Incomplete
Status in the
No I think it's because kernel lockdown:
commit 708822cdbcd3faab40e83a79b71617e1812a1b06
Author: Matthew Garrett
Date: Mon Feb 18 12:44:59 2019 +
UBUNTU: SAUCE: (efi-lockdown) x86/msr: Restrict MSR access when the kernel
is locked down
Writing to MSRs should not be allowed if
I wonder if the msr module is not loaded. Try
sudo modprobe msr
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https://bugs.launchpad.net/bugs/1840454
Title:
kernel 5.2 disallows thermald's direct MSR writes
Statu
Can you try 5.3rc kernel such as https://kernel.ubuntu.com/~kernel-
ppa/mainline/v5.3-rc4/?
I believe the patchset https://lore.kernel.org/linux-
pm/1562766278-7099-1-git-send-email-rui.zh...@intel.com/T/#t is needed,
which got merged in 5.3.
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