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Microcode 0x38 for 06-5c-09 causes hard lockups #42

Closed TID41 closed 3 years ago

TID41 commented 4 years ago

Months ago, my Acer Swift SF113-31-P5CK laptop (running Kubuntu and KDE Neon; the issue happened with both, and also with non-Ubuntu distros Fedora and OpenSUSE that I tried on it) began to hard lock at seemingly random intervals, ignoring sysrq+REISUB and requiring a force-off. After some trial and error, I tried removing the pertinent microcode file (06-5c-09, 0x38) from /lib/firmware/intel-ucode and updating the initramfs, reverting to the version in the system firmware, and the lockup never happened again. After I discovered that, I checked, and indeed, the onset of the lockups coincided with the delivery of the latest Intel microcode by Ubuntu.

I then tried inserting the second newest microcode file, 0x32, into /lib/firmware/intel-ucode and updating the initramfs, and again, no lockups. They previously happened anywhere from 5 minutes to a few hours into a session, and often multiple times a day. They happened particularly quickly when using Zoom, which I've used (with privacy caveats in mind) recently for reasons that are probably self-evident.

By now it has been several months since the last lockup, and I use the laptop hours each day. It's been completely stable since getting rid of 0x38.

esyr-rh commented 4 years ago

Does update to revision 0x40, that comes with microcode-20201110 release, help?

TID41 commented 4 years ago

I did install the new microcode package yesterday morning (it's evening now where I am), and I verified that it was loading (early) via dmesg, and it's been stable so far. I'll report back when more time has elapsed and I know more. I use the laptop daily anyway, so it will get a lot of hours of testing!

TID41 commented 3 years ago

It has been two weeks or so since I installed 0x40 on the Swift, and there have been no lockups. It looks as if the problem is fixed, as I would expect to have seen several lockups by now. I'll certainly report back immediately if it locks up, or after a while if it hasn't to confirm that I am still watching it, as long as the issue is still open.

whpenner commented 3 years ago

Is this issue resolved?

TID41 commented 3 years ago

Yes, it is resolved. It has not locked up since the update to 0x40.