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Semyon0101

Member

Registered: 2026-07-06

Posts: 20

Re: system lag after resuming from deep s2idle (PC10)

if I add intel_idle.max_cstate=2 then the sleep consumed 8% per 8 hours,
if i use intel_idle.max_cstate=3 then the bag appears.

seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 76,983

Re: system lag after resuming from deep s2idle (PC10)

So basically the limited c-state prevents the CPU from actually shutting down during s2idle.

Going back to #14, what is device:5c ?

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Slonyara

Member

Registered: 2026-07-24

Posts: 1

Re: system lag after resuming from deep s2idle (PC10)

Laptop: Lenovo ThinkPad X9-15 Gen 1 – same problem; this bug can only be fixed by Lenovo or Intel

Semyon0101

Member

Registered: 2026-07-06

Posts: 20

Re: system lag after resuming from deep s2idle (PC10)

what is device:5c ?

$cat /sys/bus/acpi/devices/device:5c/description -Pp
ICL TBT DMA0 controller
$ls -la /sys/bus/acpi/devices/device:5c/physical_node -d
Permissions Size User Date Modified Name
lrwxrwxrwx     - root 24 Jul 12:25   /sys/bus/acpi/devices/device:5c/physical_node -> ../../../../pci0000:00/0000:00:0d.2
$lspci -nnks 00:0d.2
00:0d.2 USB controller [0c03]: Intel Corporation Core Ultra 200V Series Processors Thunderbolt DMA0 [8086:a833] (rev 10)
	Subsystem: Lenovo Device [17aa:233b]
	Kernel driver in use: thunderbolt
	Kernel modules: thunderbolt

Last edited by Semyon0101 (2026-07-24 09:29:08)

Semyon0101

Member

Registered: 2026-07-06

Posts: 20

Re: system lag after resuming from deep s2idle (PC10)

I have disabled some variable in bios and have found, that
1. Disabling that:
- PCLe tunneling
- Cpu power management
- Intel speedstep technology
- always on USB
- Wake on lan from dock
- i/o port acess (all. including camera, micro, audio, etc)
- Virtualization: enchanted biometric security
- Security chip: pluton processor control
Gave the result as disabling state3 and state2, battery leaked fast (about 1.5-2% per hour), and there was no lags.

2. Disabling the same variables without {Cpu power management, Intel speedstep technology}
Gave the result as an usual behaviour, battery leaked not fast (about 0.3-0.5% per hour) and there was lags.

Last edited by Semyon0101 (2026-07-24 09:41:11)

seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 76,983

Re: system lag after resuming from deep s2idle (PC10)

I would have asked about "always on USB" - can you also toggle thunderbolt?

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Semyon0101

Member

Registered: 2026-07-06

Posts: 20

Re: system lag after resuming from deep s2idle (PC10)

In section Thunderbolt 4 there is one toggle: PCLe tunneling (as I write before I disabled it)
In section I/o port acess there is thunderbolt (same)