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Values do not equal & Failed to start undervolt service #43
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I'm having this exact same issue even though CPU and CPU Cache are the same value |
I suddenly started to have the same issue. It used to work fine in the past. |
I have the same issue. I just noticed it when checking journalctl logs after a recent Arch update this morning. And while I'm posting this, I want to thank you for the software - it's been super helpful in keeping temps down with a LOT LESS fan noise on a new Dell XPS laptop. My /etc/intel-undervolt.conf values:
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Problem started lately, (on Arch with latest pkgs): CPU (0): Values do not equal |
I can confirm this is, in principle, not a bug of intel-undervolt. I am in a Dell XPS laptop. The problem happened right after a BIOS update, which somehow disabled the undervolt with this tool and others. My fix was to enter the BIOS, click on the button "Restore Settings", and choose "Factory Settings". After doing this, intel-undervolt works again. When doing it, some of my BIOS settings were changed, namely disabling fastboot, and GRUB might need to be repaired (I did not, though). I hope this can help all the other users with the same problem. |
I think @bugalo is on to something with the Dell XPS thing, at least for my circumstance. On the exact same software setup on a Sager laptop, intel-undervolt seems fine when I check its systemctl service status. I haven't tried the reset BIOS on the XPS, though I did just go through a firmware update when I was logged into the Windows portion and the intel-undervolt failures could have happened right around that time. |
I can now confirm that after downgrading the DELL vostro 7590 bios to 1.5.1 from 1.6.0, all issues are solved and also allows ubuntu 20.04 to work properly. |
I am using a Dell XPS with Arch Linux, and I had the same issue after the most recent BIOS upgrade:
I followed @bugalo's approach to reset the BIOS to factory settings. After I did that, I made sure to follow all requirements for UEFI here: intel-undervolt started working after that once again. |
Per @bugalo 's suggestion, I reset my Dell XPS BIOS using the "factory settings" option in the BIOS screen, and intel-undervolt works. I didn't even have to fix UEFI or change back any BIOS settings - everything seems to still work as it did before, just with a downgraded BIOS. If I was smarter and knew how, I'd love to figure out what's in the Dell 1.6.0 BIOS update that broke intel-undervolt. Curious. |
Same here with a xps15 9570 after updating to bios v1.16.2 |
I confirm, the "bios reset" solution works on a XPS 9570 ! thanks @bugalo ! |
(Writing from an XPS 9570) |
I just want to document that Dell is rolling these changes to every product line, to block everyone from undervolting as a mitigation to plundervolt vulnerability on SGX, which sucks if you want other security updates that are bundled together with the undervolt block even though you are not using SGX. It would be reasonable for Dell to provide a way to enable undervolt if you don't use SGX but they didn't. |
Confirmed BIOS reset to factory settings fixes this error on Dell XPS 15 7590. |
Interesting to hear that Factory Settings works for others on Dell XPS 9570. I'm currently running on Manjaro on BIOS 1.16.2 and this method did not seem to work for me. Currently set as:
And results in:
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MacBook Pro 15' 2019. i7-9750H. The same problem occurs. |
Any plans to fix this issue? |
Is it even fixable? |
I have the same issue, reset bios to factory did not fix. Dell XPS 7590. |
XPS 9560 on 7700HQ, reset not working, bios ver. 1.20.0 |
Have you tried downgrading BIOS then reset? |
I had the same issue ("Values do not equal") with my MSI laptop (I have GS75 Stealth 10SFS - i9-10980HK).
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Running a Dell XPS 13 9360 here. I also noticed that I'm getting the same error on intel-undervolt. I think this is after my last bios upgrade - but don't remember my previous version. Resetting the bios to factory settings did not help. As for a BIOS downgrade I'm currently wondering if I would rather have the security fixes or the undervolt features. Did anyone figure out a working bios version on a 9360 ? 🙌 |
Plundervolt was corrected by the intel security advisory 289, so if you look for that in the BIOS details you may find the one that fixed the issue. Looking at XPS 9360 drivers, this SA289 update was rolled on October on the 2.14.2 BIOS version. |
side discussion:
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My understanding from reading @Moitaeel 's message is that to patch a vulnerability on SGX Dell blocked the "API" used to perform the undervolting in the BIOS update. It might be too restrictive (or not...) but it seems that right now you should either get the security fix or the capability to undervolt depending on your BIOS version : https://plundervolt.com/ But then, why does resetting to factory settings work in some cases ?... weird. Even though the whole thing is a little frustrating for me, it is actually nice to see dell release BIOS updates for my laptop that is more than 4 years old now. |
Had the same issue with Dell Vostro 5471 - and BIOS v1.16.0. |
Getting the same issue on a Surface Laptop 2 running Arch Linux. Haven't found a fix for this yet so far. |
I am on Razer Blade Studio 2020, I had to modify my bios and program it with hardware programmer to have this feature enabled ... because BIOS is signed |
Same issues on Dell XPS 9380. UEFI is on 00.1.12.1. UEFI factory reset has not helped. If it's related to INTEL-SA-00317 I have to downgrade back to 00.1.9.1 which is kinda more scary than a hotter lap and quicker battery drain. ¯_(ツ)_/¯ If there is a fix without a downgrade, I'd greatly appreciate it. |
Same issue with System76 Oryx Pro 7, which is a shame because it runs extremely hot. |
Doesnt system76 have open bios firmware so downgrading is "simple" ? I have Surface book 2 and I have the exact same issue. Downgrading is not even an option for me sadly as they locked out downgrading with say |
Lenovo Ideapas C340, the same issue. |
Yes, but I'd rather not indefinitely run an old BIOS, especially since the "working" BIOS version completely predates the laptop I'm using. There's a request to add a toggle in the BIOS config menu here: system76/firmware-open#201 |
The UEFI factory reset does not help on my XPS15 9560 v1.24.0. |
Xiaomi Mi Air i5 8250U. |
@myszkin81 You probably have a recentish Intel microcode that gets applied at boot-time. |
@myszkin81 Do you have |
Yes I do.
The result is same if I add |
Then this is why. Disable that microcode, and see if that resolves your issue. |
How do I do that? I have the same laptop as the previous user, but I don't really know how to proceed with this recommendation. |
That's between you and Google. It's different on different systems. It would be impossible for me to advise on specifics. |
Anyone got lucky and managed to undervolt in linux on macbook air (4th gen i7 4560u, Pop Os 21.10)? I'm getting |
@s10e-g Thanks for pointing me in the right direction. For my XPS 7590 it was For anyone trying this method, you don't need to have grub installed. You can just download the latest modded grub release and place it on a usb or your boot partition. Then in the bios add a boot entry to boot into the |
Thanks @s10e-g and @FallingSnow for your messages. I found a detailed step-by-step tutorial for those who would like to perform theses actions on XPS 7590 : https://www.reddit.com/r/Dell/comments/fzv599/xps_7590_160_uefi_unlock_undervolting_and_remove/
Because Note that you can find the variables adresses yourself by downloading BIOS https://www.dell.com/support/home/fr-fr/product-support/product/xps-15-7590-laptop/drivers and following this guide: https://github.com/dreamwhite/bios-extraction-guide/tree/master/Dell BTW you should then be exposed to plundervolt vulnerabilities https://plundervolt.com/ |
@myszkin81 Hi, Have you succeed to fix that error "Values do not equal" |
@webcaptcha No, I didn't. It is said that intel modified their firmware so this no longer works. |
Same on Asus OG Zephyrus G16 GU603.
My config is this:
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My MSI Raider GE76 10UH laptop also gave this error. I solved it by entering into the Bios settings and unlocking some options that can be found in this video... https://www.youtube.com/watch?v=JdY6CddXtU0 After setting it, I could apply the configuration. I can't send a screenshot right now but I read what I put into the config. |
i also seem to be affected, tho i use a tigerlake(11th gen). fuck you lenovo |
got mine lenovo m720q undervolt working after modding the bios, as explained and tested here |
So the trick is to not be in UEFI mode? |
Hey, I use Huawei Matebook E 2022 and try this program to undervolt.
My configure file is this.
I can't solve this problem. |
Hi,
Since a few kernel updates ago (now on Linux nk-zbook 5.5.2-1-MANJARO #1 SMP PREEMPT Tue Feb 4 19:22:35 UTC 2020 x86_64 GNU/Linux) I am having an issue undervolting my HP Zbook Studio Mobile system (i7 8750h).
Any idea how to fix?
Cheers
my config
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