Thinkpad T460S does not wake up from sleep

[Jānis Kangarooo]

Thinkpad T460S does not wake up from sleep

If I close the LCD lid, laptop goes to sleep. However when I open the lit, it will not wake up: power button led slowly blinks (indicating a sleep). Pressing it doesn't do any effect. Keyboard doesn't work, except when pressing Fn-Esc, green led on Esc button lights up.

The only way out from this state is turning off the laptop by long-pressing power button and booting from scratch.

https://www.reddit.com/r/debian/comments/dq52ut/thinkpad_t460s_does_not_wake_up_from_sleep/

https://forums.lenovo.com/t5/ThinkPad-T400-T500-and-newer-T/T460s-Display-Won-t-Wake-From-Sleep/td-p/3343231

https://unix.stackexchange.com/questions/698342/thinkpad-p50-ubuntu-22-04-cannot-wake-up-at-all-why

https://www.google.com/search?q=lenovo+thinkpad+t460s+ubuntu+sleep+mode+cant+wake+up

ProblemType: Bug
DistroRelease: Ubuntu 24.04
Package: gnome-screensaver (not installed)
ProcVersionSignature: Ubuntu 6.14.0-37.37~24.04.1-generic 6.14.11
Uname: Linux 6.14.0-37-generic x86_64
ApportVersion: 2.28.1-0ubuntu3.8
Architecture: amd64
CasperMD5CheckResult: unknown
CurrentDesktop: KDE
Date: Tue Jan 6 21:33:31 2026
InstallationDate: Installed on 2026-01-05 (1 days ago)
InstallationMedia: Kubuntu 24.04.3 LTS "Noble Numbat" - Release amd64 (20250805.1)
SourcePackage: gnome-screensaver
Symptom: security
Title: Screen locking issue
UpgradeStatus: No upgrade log present (probably fresh install)