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https://github.com/theupriser/steamify-cachyos-dev.git
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feat: vmcec.sh tests HDMI-CEC against a fake TV; vmwake.sh wakes the VM over QMP
run.sh opens a QMP socket; the skill documents the CEC test and its gotchas.
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#!/bin/bash
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# Test HDMI-CEC in the guest against a fake TV: the kernel's vivid driver
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# gives a virtual HDMI input (/dev/cec0, plays the TV, driven with cec-ctl)
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# and output (/dev/cec1, the PC, where cecd runs). Needs the wizard's HDMI-CEC
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# item on (cecd, cec-ctl from v4l-utils); steamos-manager (Steam Machine
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# support) for the Steam settings tests. Prints PASS/FAIL/SKIP per check.
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#
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# scripts/vmcec.sh everything, including a real suspend/resume
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# (needs the QMP socket from run.sh to wake up)
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# scripts/vmcec.sh --no-sleep everything except suspending the VM
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# scripts/vmcec.sh --sleep-only only the real sleep/wake check (after a full run)
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#
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# Afterwards the normal cecd service runs again; vivid stays loaded.
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# Env: VM_USER (theupriser), VM_PORT (2222), VM_HOST (localhost).
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set -euo pipefail
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. "$(dirname "$0")/common.sh"
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SLEEP_TEST=true SLEEP_ONLY=false
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[[ "${1:-}" == --no-sleep ]] && SLEEP_TEST=false
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[[ "${1:-}" == --sleep-only ]] && SLEEP_ONLY=true
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# --- in the guest: helpers, setup and all checks except the real sleep ---
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$SLEEP_ONLY || vm_ssh "SLEEP_TEST=$SLEEP_TEST bash -s" << 'REMOTE'
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export XDG_RUNTIME_DIR=/run/user/1000 DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/1000/bus
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W=~/.cache/vmcec; mkdir -p "$W"
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pass=0 fail=0 skip=0
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PASS() { echo " PASS $*"; pass=$((pass + 1)); }
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FAIL() { echo " FAIL $*"; fail=$((fail + 1)); }
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SKIP() { echo " SKIP $*"; skip=$((skip + 1)); }
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check() { local d="$1"; shift; if "$@" >/dev/null 2>&1; then PASS "$d"; else FAIL "$d"; fi; }
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TV() { cec-ctl -d /dev/cec0 "$@"; }
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BUS=com.steampowered.CecDaemon1
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has_smgr() { steamosctl get-hdmi-cec-state >/dev/null 2>&1; }
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# Key reader for the cecd input device: prints key names while it runs.
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cat > "$W/keys.py" << 'PY'
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import re, select, struct, sys, time
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names = {}
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for line in open('/usr/include/linux/input-event-codes.h'):
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m = re.match(r'#define\s+(KEY_\w+|BTN_\w+)\s+(0x[0-9a-fA-F]+|\d+)\b', line)
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if m: names.setdefault(int(m.group(2), 0), m.group(1))
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f = open(sys.argv[1], 'rb'); end = time.time() + float(sys.argv[2])
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while time.time() < end:
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if select.select([f], [], [], 0.1)[0]:
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_, _, t, c, v = struct.unpack('llHHi', f.read(24))
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if t == 1 and v == 1: print(names.get(c, c), flush=True)
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PY
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# Monitor the TV side's CEC bus into $W/mon.txt (needs root).
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mon_start() { sudo pkill -f 'cec-ctl -d /dev/cec0 -M' 2>/dev/null; : > "$W/mon.txt"
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sudo sh -c "exec cec-ctl -d /dev/cec0 -M > $W/mon.txt 2>&1" & sleep 1; }
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mon_stop() { sleep 1; sudo pkill -f 'cec-ctl -d /dev/cec0 -M' 2>/dev/null; wait 2>/dev/null; }
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seen() { grep -q "Received from.*): $1" "$W/mon.txt"; }
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echo "== Setup: fake TV (vivid)"
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lsmod | grep -q '^vivid' || sudo modprobe vivid n_devs=1 num_inputs=1 input_types=0x3 num_outputs=1 output_types=0x1
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sleep 2
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TV --tv --osd-name "Fake TV" >/dev/null 2>&1
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v4l2-ctl -d /dev/video0 --set-ctrl hdmi_000_0_is_connected_to=2
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# The cecd service (-e) takes every CEC device, the TV too: a temporary
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# drop-in limits it to the PC side, so steamos-manager still controls it.
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mkdir -p ~/.config/systemd/user/cecd.service.d
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printf '[Service]\nExecStart=\nExecStart=/usr/bin/cecd -d /dev/cec1\n' > ~/.config/systemd/user/cecd.service.d/vmcec.conf
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systemctl --user daemon-reload; systemctl --user restart cecd.service
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sleep 4
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systemctl --user is-active -q steamos-manager.service && { systemctl --user restart steamos-manager.service; sleep 3; }
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LA=$(cec-ctl -d /dev/cec1 | awk '/Logical Address /{print $4; exit}')
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PA=$(cec-ctl -d /dev/cec1 | awk '/Physical Address/{print $4; exit}')
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EV=$(grep -A4 'N: Name="cecd' /proc/bus/input/devices | grep -oE 'event[0-9]+' | head -1)
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echo " PC side: physical $PA, logical $LA, input /dev/input/${EV:-none}"
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echo "== 1. Identity (TV asks the PC)"
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[[ "$PA" == 1.0.0.0 ]] && PASS "physical address 1.0.0.0" || FAIL "physical address is $PA"
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[[ "$LA" =~ ^(4|8|9|11)$ ]] && PASS "logical address $LA (playback device)" || FAIL "logical address is '$LA'"
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name=$(TV -t "$LA" --give-osd-name 2>&1 | awk -F': ' '/name:/{print $2; exit}')
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[[ "$name" == "Steam Machine" ]] && PASS "OSD name 'Steam Machine'" || FAIL "OSD name is '$name' (steamos-manager's config not applied?)"
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vendor=$(TV -t "$LA" --give-device-vendor-id 2>&1 | awk '/vendor-id:/{print $2; exit}')
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[[ "$vendor" == 0xe0319e* ]] && PASS "vendor ID Valve (0xe0319e)" || FAIL "vendor ID is '$vendor'"
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check "answers a poll" TV -t "$LA" --poll
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echo "== 2. TV remote -> PC (key presses)"
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press() { TV -t "$LA" --user-control-pressed ui-cmd="$1" >/dev/null; sleep 0.15; TV -t "$LA" --user-control-released >/dev/null; sleep 0.25; }
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keys_for() { # keys_for <seconds> <ui-cmd>...: keys arriving while pressing
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EV=$(grep -A4 'N: Name="cecd' /proc/bus/input/devices | grep -oE 'event[0-9]+' | head -1)
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: > "$W/keys.txt"; local r=
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[[ -n "$EV" ]] && { sudo timeout "$1" python3 "$W/keys.py" "/dev/input/$EV" "$1" > "$W/keys.txt" & r=$!; }
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sleep 1; shift
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local k; for k in "$@"; do press "$k"; done; [[ -n "$r" ]] && wait "$r" 2>/dev/null; cat "$W/keys.txt"; }
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if [[ -z "$EV" ]]; then FAIL "no cecd input device"
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else
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for k in up down left right select exit back root-menu setup-menu contents-menu \
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play pause stop rewind fast-forward forward backward \
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volume-up volume-down mute number-entry-mode number-0-or-number-10 number-5 \
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channel-up channel-down display-information electronic-program-guide \
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f1-blue f2-red f3-green f4-yellow; do
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got=$(keys_for 2 "$k" | tr '\n' ' ')
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if [[ -n "$got" ]]; then PASS "$(printf '%-28s -> %s' "$k" "$got")"
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else SKIP "$(printf '%-28s -> nothing (not mapped by cecd)' "$k")"; fi
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done
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# The TV's power button arrives as KEY_POWER, and Steam Machine support
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# makes the power button sleep: with sleep blocked, check the key only.
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sudo systemd-inhibit --what=sleep:handle-power-key --mode=block --who=vmcec --why=test sleep 6 & inh=$!; sleep 1
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got=$(keys_for 2 power-toggle-function | tr '\n' ' ')
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wait $inh 2>/dev/null
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[[ "$got" == *KEY_POWER* ]] && PASS "$(printf '%-28s -> %s' power-toggle-function "$got") (sleeps the PC)" ||
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FAIL "power-toggle-function -> '$got'"
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fi
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echo "== 3. Steam settings (steamos-manager, over D-Bus like Steam)"
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# steamosctl's suspend-tv/suspend-device getters and setters don't work
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# (steamos-manager 26.4.1); Steam uses these D-Bus properties.
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SM=com.steampowered.SteamOSManager1; SMP=/com/steampowered/SteamOSManager1; CEC2=$SM.HdmiCec2
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prop() { busctl --user get-property $SM $SMP $CEC2 "$1" 2>/dev/null | awk '{print $2}'; }
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setp() { busctl --user set-property $SM $SMP $CEC2 "$1" b "$2" 2>/dev/null; sleep 2; }
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cfg() { grep -h "^$1 *=" ~/.config/cecd/config.d/*.toml 2>/dev/null | tail -1 | awk -F'= *' '{print $2}'; }
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if ! has_smgr; then SKIP "steamos-manager has no HDMI-CEC interface (no Steam Machine support?)"
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else
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echo " now: $(steamosctl get-hdmi-cec-state 2>&1); EnableControl=$(prop EnableControl) WakeTv=$(prop WakeTv) SuspendTv=$(prop SuspendTv) SuspendDevice=$(prop SuspendDevice) WakeDeviceSupported=$(prop WakeDeviceSupported)"
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setp EnableControl false
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got=$(keys_for 2 down | tr '\n' ' ')
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[[ -z "$got" && "$(cfg uinput)" == false ]] && PASS "remote control off: keys are ignored (uinput = false)" || FAIL "remote control off: keys '$got', uinput = $(cfg uinput)"
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setp EnableControl true
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got=$(keys_for 2 down | tr '\n' ' ')
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[[ -n "$got" ]] && PASS "remote control on again: $got" || FAIL "remote control on, but no keys"
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for pr in WakeTv:wake_tv SuspendTv:suspend_tv SuspendDevice:allow_standby; do
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for v in false true; do
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setp "${pr%%:*}" $v
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[[ "$(prop "${pr%%:*}")" == "$v" && "$(cfg "${pr#*:}")" == "$v" ]] &&
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PASS "${pr%%:*} $v (cecd config ${pr#*:} = $v)" || FAIL "${pr%%:*} $v: property $(prop "${pr%%:*}"), config ${pr#*:} = $(cfg "${pr#*:}")"
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done
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done
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[[ "$(prop WakeDeviceSupported)" == true ]] && PASS "waking the PC with the TV is supported" ||
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SKIP "waking the PC with the TV: not supported here (WakeDeviceSupported = false)"
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steamosctl set-hdmi-cec-state control-and-wake >/dev/null 2>&1; sleep 3
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fi
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systemctl --user is-active -q cecd.service && PASS "cecd still running" || FAIL "cecd stopped"
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echo "== 4. PC -> TV"
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# A plain TV (no soundbar): volume goes to the TV itself (address 0).
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TV --tv --osd-name "Fake TV" >/dev/null 2>&1; sleep 2
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echo " fake TV: $(TV | awk '/Logical Address /{printf "%s%s ", $4, $5}')"
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DEV=$(busctl --user tree $BUS 2>/dev/null | grep -oE '/com/steampowered/CecDaemon1/Devices/Cec[0-9]+' | head -1)
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mon_start
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if has_smgr; then steamosctl hdmi-cec-make-active >/dev/null 2>&1; sleep 1; else busctl --user call $BUS "$DEV" $BUS.CecDevice1 SetActiveSource >/dev/null 2>&1; sleep 1; fi
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busctl --user call $BUS /com/steampowered/CecDaemon1/Daemon $BUS.Daemon1 Wake >/dev/null 2>&1; sleep 1
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mon_stop
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{ seen ACTIVE_SOURCE || seen IMAGE_VIEW_ON || seen TEXT_VIEW_ON; } && PASS "make active: TV switches to the PC ($(grep -oE '\): [A-Z_]+' "$W/mon.txt" | sort -u | tr -d '):' | tr '\n' ' '))" || FAIL "make active: TV got nothing"
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seen IMAGE_VIEW_ON || seen TEXT_VIEW_ON && PASS "wake: TV is turned on (IMAGE_VIEW_ON)" || FAIL "wake: no IMAGE_VIEW_ON"
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mon_start
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for m in VolumeUp VolumeDown Mute; do busctl --user call $BUS "$DEV" $BUS.CecDevice1 $m y 0 >/dev/null 2>&1; sleep 0.5; done
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echo " audio status: $(busctl --user --timeout=3 call $BUS "$DEV" $BUS.CecDevice1 GetAudioStatus y 0 2>&1)"; sleep 1
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mon_stop
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n=$(grep -cE 'USER_CONTROL_PRESSED' "$W/mon.txt"); ops=$(grep -A1 USER_CONTROL_PRESSED "$W/mon.txt" | grep -oiE 'volume-up|volume-down|mute' | sort -u | tr '\n' ' ')
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[[ $n -ge 3 ]] && PASS "volume up/down/mute sent to the TV ($ops)" || FAIL "volume: $n key presses reached the TV ($ops)"
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seen GIVE_AUDIO_STATUS && PASS "asks the TV's audio status" || FAIL "no GIVE_AUDIO_STATUS"
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mon_start
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busctl --user call $BUS /com/steampowered/CecDaemon1/Daemon $BUS.Daemon1 Standby b true >/dev/null 2>&1; sleep 1
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mon_stop
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seen STANDBY && PASS "standby: TV is turned off (STANDBY)" || FAIL "standby: no STANDBY"
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systemctl --user is-active -q cec-audio-control.socket && PASS "cec-audio-control socket listening" || FAIL "cec-audio-control socket not active"
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echo "== 5. TV off -> PC to sleep (sleep blocked, so the VM stays up)"
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if ! has_smgr; then SKIP "needs steamos-manager"
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else
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TV --tv >/dev/null 2>&1; sleep 2
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for want in true false; do
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setp SuspendDevice $want; sleep 1
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since=$(date '+%Y-%m-%d %H:%M:%S')
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sudo systemd-inhibit --what=sleep --mode=block --who=vmcec --why=test sleep 7 & inh=$!; sleep 1
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TV -t 15 --standby >/dev/null 2>&1; sleep 4
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wait $inh 2>/dev/null
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tried=$(journalctl --user -u cecd --since "$since" --no-pager | grep -c 'Failed to standby')
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if [[ $want == true ]]; then
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[[ $tried -gt 0 ]] && PASS "SuspendDevice on: TV standby makes the PC go to sleep (blocked here)" || FAIL "SuspendDevice on, but no sleep attempt"
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else
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[[ $tried -eq 0 ]] && PASS "SuspendDevice off: TV standby doesn't touch the PC" || FAIL "SuspendDevice off, but the PC tried to sleep"
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fi
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done
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setp SuspendDevice true
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fi
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if ! $SLEEP_TEST; then rm -f ~/.config/systemd/user/cecd.service.d/vmcec.conf; systemctl --user daemon-reload; systemctl --user restart cecd.service; fi
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echo "== Result: $pass passed, $fail failed, $skip skipped (before the sleep test)"
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echo "$LA" > "$W/la"
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REMOTE
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$SLEEP_TEST || { echo "(sleep test skipped)"; exit 0; }
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# --- real suspend/resume: the TV should go off, and on again at wake ---
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# Through logind (systemctl suspend), like Steam and the power button: cecd
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# acts on logind's PrepareForSleep, which rtcwake skips. cec-follower plays a
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# TV that answers power status; QMP (vmwake.sh) wakes the VM.
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echo "== 6. Real sleep and wake (systemctl suspend, woken over QMP)"
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vm_ssh bash -s << 'REMOTE'
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export XDG_RUNTIME_DIR=/run/user/1000 DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/1000/bus
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W=~/.cache/vmcec
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# cecd on the PC side only, with debug logging (it logs what it does at sleep).
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mkdir -p ~/.config/systemd/user/cecd.service.d
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printf '[Service]\nExecStart=\nExecStart=/usr/bin/cecd -d /dev/cec1\nEnvironment=RUST_LOG=debug\n' > ~/.config/systemd/user/cecd.service.d/vmcec.conf
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systemctl --user daemon-reload; systemctl --user restart cecd.service; sleep 4
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SM=com.steampowered.SteamOSManager1; SMP=/com/steampowered/SteamOSManager1
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busctl --user set-property $SM $SMP $SM.HdmiCec2 SuspendTv b true 2>/dev/null
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busctl --user set-property $SM $SMP $SM.HdmiCec2 WakeTv b true 2>/dev/null
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sudo systemctl stop vmcec-tv vmcec-mon 2>/dev/null; sudo systemctl reset-failed vmcec-tv vmcec-mon vmcec-sleep 2>/dev/null
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cec-ctl -d /dev/cec0 --tv >/dev/null; sleep 1
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sudo systemd-run -q --unit=vmcec-tv sh -c 'exec cec-follower -d /dev/cec0 > /dev/null 2>&1'; sleep 2
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steamosctl hdmi-cec-make-active >/dev/null 2>&1; sleep 3
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sudo systemd-run -q --unit=vmcec-mon sh -c "exec cec-ctl -d /dev/cec0 -M > $W/sleep-mon.txt 2>&1"; sleep 1
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sudo systemd-run -q --unit=vmcec-sleep sh -c 'sleep 2; systemctl suspend'
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echo " suspending..."
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REMOTE
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sleep 15
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"$(dirname "$0")/vmwake.sh" || true
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until vm_ssh -o ConnectTimeout=4 true 2>/dev/null; do sleep 3; done
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sleep 8
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vm_ssh bash -s << 'REMOTE'
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export XDG_RUNTIME_DIR=/run/user/1000 DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/1000/bus
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W=~/.cache/vmcec
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sudo systemctl stop vmcec-mon vmcec-tv 2>/dev/null
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t=$(journalctl -b --no-pager -o short-iso | grep "PM: suspend entry" | tail -1 | awk '{print $1}')
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[[ -n "$t" ]] && echo " PASS the VM really slept and woke (suspend at $t)" || echo " FAIL no suspend in the kernel log"
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log=$(journalctl --user -u cecd --since "$(date -d "${t:-now} -10 sec" '+%F %T')" --no-pager)
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grep -q 'Putting TV in standby' <<< "$log" && echo " PASS cecd: 'Putting TV in standby'" || echo " FAIL cecd didn't act on going to sleep"
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grep -q 'Waking TV' <<< "$log" && echo " PASS cecd: 'Woke from standby. Waking TV.'" || echo " FAIL cecd didn't act on waking up"
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grep -q 'Received from.*: STANDBY' "$W/sleep-mon.txt" && echo " PASS going to sleep: TV turned off (STANDBY)" || echo " FAIL going to sleep: no STANDBY to the TV"
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grep -qE 'Received from.*: (IMAGE_VIEW_ON|TEXT_VIEW_ON)' "$W/sleep-mon.txt" && echo " PASS waking up: TV turned on (IMAGE_VIEW_ON)" || echo " FAIL waking up: no IMAGE_VIEW_ON"
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grep -oE '^(Received|Transmitted)[^:]*: [A-Z_]+' "$W/sleep-mon.txt" | sed 's/^/ /'
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# Back to the normal service.
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rm -f ~/.config/systemd/user/cecd.service.d/vmcec.conf; systemctl --user daemon-reload; systemctl --user restart cecd.service
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REMOTE
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