Hello Kleber,
I tried kernels 5.11.0-40 and 5.13.0-21. My machine freezes with both.
Freezes happen randomly, maybe a few seconds after ubuntu boots, maybe
after few minutes. Kernel 5.4.0-90 works.
My version is Ubuntu 20.04.3 LTS. Machine is a Dell Latitude 7390 with
Intel i7-8650U, Intel UHD Gr
On my affected machine I tested a live iso of EndeavourOS (latest
release) with kernel 5.13+ and I observed no freezes. So the problem
looks specific to Ubuntu on my laptop (Dell Latitude 7390).
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I have been affected by the same bug after upgrading ubuntu 20.04 LTS
from kernel 5.8 to 5.11. I have a Dell Latitude 7390. Random freezes
when plugged in initially, but worked on battery. After changing
motherboard, random freezes even on battery... I have downgraded to
kernel 5.4.0-88-generic and
Today I've just noticed that on my laptop the issue is gone: I removed
'processor.ignore_ppc=1' from the default grub command line and the
hardware limits are set up correctly in the range 800 MHz - 2.70 GHz.
Using latest kernel 3.8.0-26-generic. Anyway for me the problem showed
on battery, so it w
I have an HP notebook. For me the problem arises precisely when on
battery. When on AC the system scales correctly, both with battery in or
off its location; just pull off the AC charger and the max frequency
locks down to 800MHz per preocessor, which actually is the minimum
possible. So the issue
I have the same problem. My cpu Intel(R) Core(TM) i7-2620M CPU @
2.70GHz. When on battery max_freq is locked down to min_freq, which is
800MHz. I'm using a fully updated Ubuntu 13.04. The problem was not
there right after a fresh installation and appeared after some upgrade
during the previous days
