Created attachment 152881 [details]
the output of acpidump-acpica > acpidump.txt

Since two weeks I use a Thinkpad X1 Carbon (1st Gen), which is using
i915 kernel driver.



I'm trying to figure out what happens when I close the lid of this
laptop. It is not behaving as I would expect. I notice this because
i3lock does *not* switch on after the laptop's lid is re-opened. I'm
using Debian Linux, and a package called acpi-support that configure's
the screen to be lock by a one of a list of screensavers, when the lid
is closed & re-open.

I'm going to supply you a lot of info, and my apologies if that is *not*
what you want.


cat /sys/power/state
freeze mem disk

If I close the lid, the machine goes or seems to go into
suspend. However, it seems like LID/state never changes

cat /proc/acpi/button/lid/LID/state 
state:      open

and when I do what you recommend here https://bugzilla.kernel.org/show_bug.cgi?id=13263

while true; do cat /proc/acpi/button/lid/LID/state; sleep 1; done
state:      open
state:      open
state:      open
^C

this list continous, it merely hickup's for a wee short while..



lspci  -vv -s 00:02.0
00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09) (prog-if 00 [VGA controller])
        Subsystem: Lenovo Device 21f9
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0
        Interrupt: pin A routed to IRQ 44
        Region 0: Memory at f0000000 (64-bit, non-prefetchable) [size=4M]
        Region 2: Memory at e0000000 (64-bit, prefetchable) [size=256M]
        Region 4: I/O ports at 4000 [size=64]
        Expansion ROM at <unassigned> [disabled]
        Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
                Address: fee0f00c  Data: 41d1
        Capabilities: [d0] Power Management version 2
                Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
                Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
        Capabilities: [a4] PCI Advanced Features
                AFCap: TP+ FLR+
                AFCtrl: FLR-
                AFStatus: TP-
        Kernel driver in use: i915