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| author |  sommerfeld <sommerfeld@sommerfeld.dev> | 2026-05-29 11:18:15 +0100 |
|---|---|---|
| committer | sommerfeld <sommerfeld@sommerfeld.dev> | 2026-05-29 11:18:15 +0100 |
| commit | 6e0c5c33438e5e898bd075c33a45b3abf9d1b26b (patch) | |
| tree | c7387db08eaf33f55eb7f1e3cca331f92fbce9be /etc/mkinitcpio.conf | |
| parent | ad8e14860fa0ca978f5ef6e02860d24f5e39c361 (diff) | |
| download | dotfiles-6e0c5c33438e5e898bd075c33a45b3abf9d1b26b.tar.gz dotfiles-6e0c5c33438e5e898bd075c33a45b3abf9d1b26b.tar.bz2 dotfiles-6e0c5c33438e5e898bd075c33a45b3abf9d1b26b.zip | |
feat(suspend): re-enable suspend on s2idle, drop diagnostic scaffolding
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
Diffstat (limited to 'etc/mkinitcpio.conf')
| -rw-r--r-- | etc/mkinitcpio.conf | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/etc/mkinitcpio.conf b/etc/mkinitcpio.conf index d8ae3ff..fab5fa1 100644 --- a/etc/mkinitcpio.conf +++ b/etc/mkinitcpio.conf @@ -4,7 +4,7 @@ # run. Advanced users may wish to specify all system modules # in this array. For instance: # MODULES=(usbhid xhci_hcd) -MODULES=(intel_lpss_pci) +MODULES=() # BINARIES # This setting includes any additional binaries a given user may |