Kernel 6.1.0 provided with the latest Manjaro update is KO on a haswell laptop (CPU: quad core Intel Core i7-4750HQ with integrated graphics). Systems regularly freezes a few seconds after launching the desktop environment.
Kernel 6.0.14 is OK. Cannot seem to get anything useful from journalctl after poweroff and restart.
Failure is major and comes with data loss, all my btrfs snapshots are gone;
Failure appears to be triggered by using graphics, possibly by accelerated graphics. Booting, leaving the sddm login screen on, switching to a text console and using the system from there does not trigger the freeze;
When the system freezes it is impossible to ping it from the outside;
When the freeze occurs the system appears to be unable to log it on any persistent storage.
So I think that we are facing a major kernel regression in 6.1
Would be great if the fixed 6.1 kernel could be made available as a Manjaro kernel as soon as an upstream kernel release is made given the gravity of the regression that can cause data loss.
I also understand that Manjaro 22.0 Sikaris image uses the broken 6.1 kernel, unclear to me if it can be respun. As is it may cause some machines to freeze during installation.
Updated the issue title, as the problem has nothing to do with the cpu series, but is triggered by some wifi hardware.
If you have a MediaTeck WIFI adaptor in the MT76 series, you should avoid kernels in the 6.1 series until the fix is revised and included in the kernel.