From 6e0c5c33438e5e898bd075c33a45b3abf9d1b26b Mon Sep 17 00:00:00 2001 From: sommerfeld Date: Fri, 29 May 2026 11:18:15 +0100 Subject: feat(suspend): re-enable suspend on s2idle, drop diagnostic scaffolding MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Confirmed root cause: this hardware's S3 (deep) firmware path triggers a fatal wake-from-suspend hang only on linux-hardened. INIT_ON_FREE + slab hardening + tighter locking turn a latent driver race that stock linux gets away with into an unrecoverable panic so early the journal isn't even flushed. mem_sleep_default=s2idle bypasses the BIOS S3 path entirely (s0ix is a pure-kernel low-power state) and suspends/resumes reliably under hardened. This is a widespread Lenovo S3 firmware issue across post-2018 ThinkPads (see Ubuntu T560, X1C9/10/11 reports). Lenovo themselves moved newer firmwares to s2idle-only. Not a linux-hardened bug per se; just hardened being a strict enough kernel to make the bug fatal. Keep: * mem_sleep_default=s2idle in etc/kernel/cmdline-linux-hardened.tmpl (only the hardened UKI; stock linux keeps unchanged shared cmdline) Revert (all the diagnostic / speculative scaffolding from the last few commits): * MODULES=(intel_lpss_pci) → MODULES=() — Arch wiki touchpad fix was not the cause here * nmi_watchdog=panic softlockup_panic=1 panic=10 — only needed to auto-reboot during diagnosis * no_console_suspend — diagnostic-only * etc/systemd/logind.conf.d/20-no-suspend.conf — masking workaround * sleep-target masking block in run_onchange_after_deploy-etc.sh.tmpl, replaced with a one-shot cleanup that removes any leftover /dev/null symlinks from systems that ran the previous version * systemd-pstore.service from systemd-units/system.txt — added only to catch the diagnostic panic * diagnose-suspend.sh helper (and its .gitignore/.chezmoiignore entries) * sway suspend → lock-session keybind workaround * power-menu.sh Suspend entry restoration * KEYBINDS.md docs --- dot_config/sway/config | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'dot_config/sway/config') diff --git a/dot_config/sway/config b/dot_config/sway/config index 817e7c4..48e5993 100644 --- a/dot_config/sway/config +++ b/dot_config/sway/config @@ -173,7 +173,7 @@ bindsym $mod+Ctrl+bracketleft exec ~/.config/sway/brightness-osd.sh down bindsym XF86AudioMicMute exec pactl set-source-mute @DEFAULT_SOURCE@ toggle bindsym XF86Bluetooth exec ~/.config/sway/bt-toggle.sh bindsym XF86ScreenSaver exec "playerctl -a pause; swaylock -f -e -c 000000" -bindsym XF86Sleep exec loginctl lock-session +bindsym XF86Sleep exec systemctl suspend bindsym XF86WLAN exec ~/.config/waybar/wifi-toggle.sh bindsym XF86RFKill exec rfkill toggle all @@ -225,13 +225,13 @@ bindsym $mod+z mode "qr" # System / hardware submode — non-XF86 alternatives for the rarely used # hardware toggles and TUI launchers above. Enter with Super+x; mnemonic -# letters (b=bluetooth, w=wifi, r=rfkill, s=lock-session, d=display, +# letters (b=bluetooth, w=wifi, r=rfkill, s=sleep, d=display, # v=volume-mixer, k=keybinds, m=notification-picker). mode "system" { bindsym b exec ~/.config/sway/bt-toggle.sh, mode "default" bindsym w exec ~/.config/waybar/wifi-toggle.sh, mode "default" bindsym r exec rfkill toggle all, mode "default" - bindsym s exec loginctl lock-session, mode "default" + bindsym s exec systemctl suspend, mode "default" bindsym d exec ~/.config/sway/display-toggle.sh, mode "default" bindsym v exec $term --class=floating -e pulsemixer, mode "default" bindsym k exec $term --class=floating -e glow -p ~/dotfiles/KEYBINDS.md, mode "default" -- cgit v1.3.1