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fix harden hardware detection D3cold freezes

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Fixes a critical startup crash on hybrid graphics laptops (e.g., Intel + Nvidia) running fresh Debian installs without proprietary drivers. 

When the secondary GPU enters D3cold power state, kernel-level I/O operations (like `lspci` or reading `/sys/block/`) hang in Uninterruptible Sleep (State D), ignoring standard kill signals and freezing the terminal. Combined with `set -euo pipefail`, these hangs made the script silently fail or enter infinite loops.

Changes:
- Timeout Wrappers: Wrapped all hardware probing commands (`lspci`, `lsblk`, `cat /sys/...`, `ip`, `iwgetid`, `pw-cli`) with `timeout 2` to force-continue if the kernel blocks.
- Pipeline Safety: Added `|| true` to `nvidia-smi` and `dpkg` fallback queries to prevent `pipefail` from killing the script when drivers are missing.
- Loop Hardening: Fixed an infinite loop in `detect_gpu()` where empty `lspci` outputs caused by timeouts would loop forever by adding `[[ -z "$line" ]] && continue`.
- TUI Fallbacks: Added default values for `${LINES:-24}` and `${COLUMNS:-80}` to prevent `set -u` from crashing the `whiptail` menu in restricted shell environments.
This commit is contained in:
stornic56
2026-07-26 01:15:57 -05:00
committed by GitHub
parent 762285f993
commit f0cea296d7
4 changed files with 15 additions and 15 deletions
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modules/utils.sh
+7 -7
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@@ -243,7 +243,7 @@ detect_gpu() {
local nv_ver
nv_ver=$(timeout 3 nvidia-smi --query-gpu=driver_version --format=csv,noheader 2>/dev/null | head -1) || true
if [ -z "$nv_ver" ]; then
nv_ver=$(dpkg -l nvidia-driver 2>/dev/null | awk '/^ii/ {print $3}' | sed 's/-.*//')
nv_ver=$(dpkg -l nvidia-driver 2>/dev/null | awk '/^ii/ {print $3}' | sed 's/-.*//') || true
fi
[ -n "$nv_ver" ] && GPU_VERSION="NVIDIA $nv_ver"
fi
@@ -325,16 +325,16 @@ detect_network() {
state=$(echo "$line" | awk '{print $9}')
case "$iface" in
eth*|enp*|ens*|enx*|eno*)
ip4=$(ip -4 -o addr show "$iface" 2>/dev/null | awk '{print $4}')
ip4=$(timeout 2 ip -4 -o addr show "$iface" 2>/dev/null | awk '{print $4}')
ETH_NAMES+=("$iface")
ETH_STATES+=("$state")
ETH_IPS+=("${ip4:-}")
ETH_DESCS+=("${ETH_DESC:-}")
;;
wl*|wlp*|wlo*|wlan*)
ip4=$(ip -4 -o addr show "$iface" 2>/dev/null | awk '{print $4}')
ip4=$(timeout 2 ip -4 -o addr show "$iface" 2>/dev/null | awk '{print $4}')
ssid=""
[ "$state" = "UP" ] && ssid=$(iwgetid -r "$iface" 2>/dev/null || true)
[ "$state" = "UP" ] && ssid=$(timeout 2 iwgetid -r "$iface" 2>/dev/null || true)
WIFI_NAMES+=("$iface")
WIFI_STATES+=("$state")
WIFI_IPS+=("${ip4:-}")
@@ -342,7 +342,7 @@ detect_network() {
WIFI_DESCS+=("${WIFI_DESC:-}")
;;
esac
done < <(ip -o link show 2>/dev/null)
done < <(timeout 2 ip -o link show 2>/dev/null)
}
# ---------------------------------------
@@ -391,7 +391,7 @@ detect_storage() {
fi
fi
parts+=("${size} ${type}")
done < <(lsblk -d -o NAME,SIZE,ROTA,TYPE -e 7,11 2>/dev/null || true)
done < <(timeout 2 lsblk -d -o NAME,SIZE,ROTA,TYPE -e 7,11 2>/dev/null || true)
if [ ${#parts[@]} -eq 0 ]; then
STORAGE_SUMMARY="No disks detected"
@@ -423,7 +423,7 @@ detect_desktop_environment() {
# Audio server detection (PipeWire / PulseAudio)
# ---------------------------------------
detect_audio_server() {
if command -v pw-cli &>/dev/null && pw-cli info &>/dev/null 2>&1; then
if command -v pw-cli &>/dev/null && timeout 2 pw-cli info &>/dev/null 2>&1; then
AUDIO_SERVER="pipewire"
elif command -v pactl &>/dev/null; then
AUDIO_SERVER="pulseaudio"