On Sat, Jul 15, 2023 at 12:06 AM Alex <mysqlstudent(a)gmail.com> wrote:
Hi,
I have a fedora37 Asus/Intel desktop system that I'd like to be able
to shut the monitors off after some period of inactivity. When I select the
"turn off the screen when inactive for" option and select some period of
time (5 minutes), it shuts off all three monitors, then a few seconds later
they all come back on. In another five minutes, it does it again. This is
the first time in a long time I've tried to configure the power save to
shut off the monitors.
I thought it may have had something to do with one of the applications
(maybe a browser running a video or something related, but it does it with
virtually no applications running except for perhaps a file manager and a
few terminals.
I've also had problems with suspend on this PC, where pressing the power
button doesn't always suspend the PC, but instead only shuts off the
monitors but doesn't actually suspend the computer. After pressing the
power button again, the monitors turn on again. Pressing the power button
again to suspend the computer typically works the second time (or maybe
third cycle of doing this). When the computer is eventually resumed, it
shows a kernel oops but there's otherwise no impact on operation. I've
reported this kernel issue already, but I don't think it's a significant
issue. Perhaps a compatibility issue with my motherboard, but it has been
happening for more than a year over multiple versions of fedora and
multiple kernels.
I'm not really sure what more information I can provide to help
troubleshoot this. Here are some hardware details.
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI]
Ellesmere [Radeon RX 470/480/570/570X/580/580X/590] (rev ef)
Hardware name: System manufacturer System Product Name/PRIME Z370-A, BIOS
3004 07/12/2021
Here's a link to the lshw output for my computer:
https://pastebin.com/Y4kJjgSq
I suppose the easy answer is that it's a hardware problem, but there are
no other problems or impact by the kernel issue I mentioned above. No
stability issues through multiple versions of fedora.
Power management is complex, see:
https://docs.kernel.org/admin-guide/pm/
There are many different use cases, incomplete standardization of systems
and
peripherals, and vendors focused on windows. Unless your system
advertises
linux support you won't get help from the vendor. Linux does have lots of
hooks for different
power management environments, but figuring out what a particular system
needs can be an
adventure. Best hope is that your hardware is widely used and someone has
a) figured out
how to handle a similar use case, and b) recorded what they learned where
it is discoverable.
You can cast a wide net with Goggle searches -- don't just search Fedora
forums, and be sure
to check arch linux.
--
George N. White III