New Intel-lpmd version messes up power save mode

Ask Fedora
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1

Hello,

I am on Fedora KDE 44, Plasma 6.7.5, KDE Frameworks 6.30, Qt 6.11.2, Kernel 7.2.4, on Wayland.

I have an Intel Core Ultra 7 265H, 32 GB RAM, NVIDIA GeForce RTX 5070.

I have NVIDIA driver 610.57.04 and Mesa drivers 26.1.8.

I have a laptop, so I try to keep it on power save mode. Today I updated my system, and suddenly everything was extremely slow. Booting up plasma shell took 30 seconds. Opening LibreOffice Writer, for example, went from taking 12 seconds to taking 24. Web pages stuttered.

At first, I thought it was the most recent upower and tuned-ppd updates, but I downgraded each and neither solved the problem. Then I checked the full list of packages I updated and found that one of them was intel-lpmd, and it made sense that was the problem. I downgraded that single package, rebooted, and now everything is normal again on power save mode–fast, snappy, and power-efficient.

So whatever update was pushed today to intel-lpmd, it seems that something is wrong with it. I noticed the changelog said “Add patches for Arrow Lake-H and Wildcat Lake support,” which I assume fixes an issue I had where SecureBoot being on made my audio undetectable. (With SecureBoot off, the audio works fine, and with SecureBoot on and the newest patch installed, the audio works–it’s just that everything is super-slow under Power Save mode.)

Just wanted to let people know, in case they knew if there was a workaround, or if the package itself needs to be fixed.

4

Why are you take away the KDE-Plasma tag?

5

This happens sometimes when people make overlapping edits.

For example:

  1. I make a post
  2. I start editing the post
  3. While I’m editing, you add a tag “foo”
  4. I finish editing and save. My version of the post never had the tag “foo”, so when I save, the post is no longer tagged “foo”.

In this situation, Discourse would make a message saying “pg-tips removed ‘foo’”, even though I did no intentional action of removing a tag.

9

I just checked and the tags should be there.

10

If that can be confirmed as the cause then a bug should be reported on that package.

11

Apologies, I was trying to do a bug report last night, but my computer can’t connect to bugzilla.redhat.com for some reason, and I wanted to also put it on the forums so that when a solution was found it would be easier for people to find.

I’ve tried last night and today and my computer still can’t connect to the bugzilla website for some reason.

12

You have to create an account. See the link in the docs. After to use your FAS account, you need to set de email address in fas, if it is different as you used for creating the FAS Account.

The different password you can set in the accounts.fep.o website under:

https://accounts.fedoraproject.org/user/survey0r/settings/email/
13

Sorry, I forgot to specify–I actually can’t connect to the website for some reason. It times out every time, and simply won’t load for me to even create an account.

EDIT: Finally got it to work! It was a Firefox setting I had to turn off. I’ll file the bug right now.

14

Bug filed here: 2532653 – Latest version of Intel-lpmd makes power-save cause everything to be slow

Apologies, I wanted to file a bug report, but I had issues accessing bugzilla and have now fixed them.

Also, I reinstalled my operating system to see if that would fix the slow Power Save mode, and it did not. However, my sound card is now detected with secure boot on, so that was likely an issue that was accidentally caused by me.

EDIT: Never mind. Tried downgrading it again and my sound card isn’t detected anymore, and I re-upgraded the package and now the sound card still isn’t detected. The only way to get back my sound is to turn off secure boot for some reason, which I never had to do before. And if I downgrade with secure boot off, the sound disappears. When I re-upgrade with secure boot off, the sound is back.

EDIT 2: Turns out my sound problems were unrelated, and I got it all working again through following this post. This page was also helpful.

15

OK, now my sound devices just aren’t detected at all anymore. It might be related to the intel-lpmd thing, but I’ll try to see if it’s a different issue. But I never had this problem until the buggy intel-lpmd driver was pushed. (Maybe it’s also related to the newest version of tuned-ppd?) I tried different distros, too, on the same kernel and upower versions (though they used power-profiles-daemon) and I had no sound issues. I’ll work to see if I can fix it, and if not, I’ll file another bug report.