42 lines
1.6 KiB
Nix
42 lines
1.6 KiB
Nix
# Sleep
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# -----
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#
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# Without this configuration, the system will not resume from sleep properly
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# while on battery power in either offload mode or sync mode. When it tries to
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# resume, it gets to a state with a cursor in the top left hand side of the
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# panel, the power LED goes from flashing to solid, and thereafter cannot be
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# interacted with (even over SSH) and must be power cycled forcefully.
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# Sometimes it doesn't even finish going to sleep before this behavior kicks
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# in.
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#
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# When on AC, the machine either wakes up from sleep before being asked to
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# (or maybe never gets to sleep state), or it goes into a sleep state and it
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# appears consistently resume properly when it does.
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#
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# But the machine actually sleeps and resumes reliably when tlp is disabled
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# fully or partially. Disabling RUNTIME_PM and AHCI_RUNTIME_PM appears to be
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# enough to allow it to work when tlp is active. This will negatively effect
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# battery life. I couldn't figure out a more granular way to get it working,
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# despite trying to do a per-device binary search via powertop.
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#
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{config, lib, ...}:
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{
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services.tlp = {
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settings = {
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# DISK_DEVICES must be specified for AHCI_RUNTIME_PM settings to work right.
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DISK_DEVICES = "nvme0n1 nvme1n1 sda sdb";
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# with AHCI_RUNTIME_PM_ON_AC/BAT set to defaults in battery mode, P51
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# can't resume from sleep and P50 can't go to sleep.
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AHCI_RUNTIME_PM_ON_AC = "on";
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AHCI_RUNTIME_PM_ON_BAT = "on";
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# with RUNTIME_PM_ON_BAT/AC set to defaults, P50/P51 can't go to sleep
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RUNTIME_PM_ON_AC = "on";
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RUNTIME_PM_ON_BAT = "on";
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};
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};
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}
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