On Sat, Jul 15, 2023 at 12:06 AM Alex <mysqlstudent@xxxxxxxxx> 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 07/12/2021Here's a link to the lshw output for my computer: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
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