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Keep the guest out of S3 and S4 sleep states #79

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Merged
btsouth merged 1 commit into from
Sep 5, 2026
Merged

Keep the guest out of S3 and S4 sleep states #79

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5 changes: 5 additions & 0 deletions app/qemu.go
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Original file line number Diff line number Diff line change
Expand Up @@ -66,6 +66,11 @@ func buildQemuArgs(cfg *config, cmdline string) []string {
"-device", "virtio-keyboard-pci", "-device", "virtio-tablet-pci",
"-device", "virtio-net-pci,netdev=n0", "-netdev", netdevArg(cfg.forwards),
"-device", "virtio-rng-pci",
// The guest must not sleep: a suspended VM leaves the window frozen
// with no way back from the keyboard, and Omarchy's power menu
// offers suspend whenever the kernel advertises it. With S3 and S4
// off the kernel reports no such state and systemd refuses cleanly.
"-global", "ICH9-LPC.disable_s3=1", "-global", "ICH9-LPC.disable_s4=1",
// The backend must be explicit: with no audiodev the guest's PipeWire
// stalls on virtio-snd control messages and the whole session hangs.
// cfg.audio is dsound normally; "none" on machines where DirectSound
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10 changes: 10 additions & 0 deletions app/qemu_nonwindows_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -353,3 +353,13 @@ func TestBuildQemuArgsTellsTheGuestTheRenderingPath(t *testing.T) {
t.Fatalf("cpu marker missing: %s", args)
}
}

func TestBuildQemuArgsDisablesGuestSleepStates(t *testing.T) {
for _, gpu := range []bool{true, false} {
cfg := &config{vmDir: "/vm", guestDir: "/guest", disk: "/vm/disk.raw", diskFormat: "raw", memMiB: 4096, audio: "none", useGpu: gpu}
args := strings.Join(buildQemuArgs(cfg, "root=/dev/vda"), " ")
if !strings.Contains(args, "-global ICH9-LPC.disable_s3=1 -global ICH9-LPC.disable_s4=1") {
t.Fatalf("gpu=%v: sleep states not disabled: %s", gpu, args)
}
}
}