On 2021-07-27 9:08 a.m., old sixpack13 wrote:
....
ping Chris Murphy, John Mellor
is this theme solved and if so, how
I ran the extended built-in BIOS diagnostics on this Lenovo P300 machine
again last week for half a day, and no faults were found. I also ran the
GTKstresstest and stress apps for a day, also with no faults found. The
machine is solid and I'm unhappy that it is Fedora that is unstable on
this hardware.
On a hunch, I disabled the Lenovo deep C-state handling in the BIOS,
reinstalled using BTRFS again and mostly recovered from backups. Its a
home daily-driver, so the extra power utilization on the disabled
C-states is not really important. Since this issue seems to be
restricted to onkly my main Lenovo machine and not the other two or any
on my Dells, I'm assuming here that the kernel is incorrectly handling
C-states on IBM/Lenovo motherboards, but no proof either way so far.
I'm waiting and watching, but so far have not seen the extreme delay
problem reoccur.
I have had the GUI lockup twice, and have attributed that to defective
hardware optimizations in Firefox, which I have now disabled. So far
the forced power-button shutdown that is required to recover from the
lockup issue has not resulted in a read-only BTRFS root fault like it
has in the past. I'm waiting and watching on this issue as well.
--
John Mellor