after Leap 42.3 kernel/stable upgrade from 4.12.7-4 -> 4.12.8-2, what I'd initially thought was a problem with NVidia driver, appears to be a broader issue ...
On 4 Leap machines, all linux/64, after upgrade, various USB devices are non-responsive once logged-in.
On two machines WITH NVidia HW & driver, it's keyboard+mouse. The reason I initially thought it was X/Nvidia-related, is that the mouse/keyboard are live through grub menu, but were noticed dead at the SDDM login.
On another, without any Nvidia HW or driver it's 2 wifi dongles.
On the last, similarly without Nvidia, it's a USB-connected HD drive.
In all 4 cases, switching back to 4.12.7-4 cleanly fixes the issues.
Attempts to manually bring up the devices simply returns "device does not exist". I'm apparently not looking in the right place, cuz I see no logged *error* -- no OOPS, crashes, or even errors, yet.
I can bisect if absolutely needed, but as these are OSB-pkg'd kernels, ideally, it's messy-ish.
So, first question -- anyone else seeing similar problems?
I can provide detail; Any specific pointers on what/how to debug/trace the problem?
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