** Description changed:
+ UPDATE:
+ linux-image-5.4.0-39-generic Works OK
+ ==
+ Original report:
linux-image-5.4.0-33-generic Works OK
linux-image-5.4.0-37-generic Freezes when leaving idle for some time.
Ubuntu 20.04LTS 64 bits. Fully updated.
Hardware:
AMD Ryzen 7 1800X
This bug no longer happens on 5.4.0-39. I turned on power management
again and the screen is correctly turned off by xscreensaver
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Doing more testing, and now that I see this "feature" disabled, I don't
think it always turned off the monitor. Looks like half of the time
linux-image-5.4.0-33-generic failed to turn it off, but it still did NOT
hang the entire system like linux-image-5.4.0-37-generic does.
Monitor details
$
After some more testing I verified this only happens when it tries to
power off the monitor. I can confirm that disabling the quick monitor
power-off and the power management in the screensaver settings makes the
kernel work stable. Again, this feature works OK on linux-
image-5.4.0-33-generic
**
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