[ltp] X1 carbon 2015 can't resume from suspend

Philipp Hachtmann linux-thinkpad@linux-thinkpad.org
Mon, 30 Nov 2015 23:03:52 +0000


Hi, thank you for the answer.

> I'm not sure what to offer other than to say that it *should* "just
> work"...

> What happens if you suspend it via some other way?
No difference.

I have found a very saddening way around the problem:
1. Installed stock Debian kernel, worked
2. Looked through the Debian patches if there's something obvious. No.
3. Took the Debian configuration, worked.
4. Changed the config "back" to what I like. Doing stepwise, it always 
kept working
5. I now have a working kernel configuration.

I'm a bit frustrated because I did not 100% figure out what went wrong.
In the ACPI stuff I could see no difference between the working config 
and my broken config. Perhaps something I don't know has side effects.

Kind regards

Philipp



>
> -Rob
>
> On Sun, Nov 29, 2015, at 12:39 PM, Philipp Hachtmann wrote:
>> Hi folks,
>>
>> I really tried and searched before writing this. I have found many
>> similar
>> topics but nothing lead me the right way.
>>
>> I have a Thinkpad X1 carbon, brand new. I'm running the latest vanilla
>> Kernel on
>> it. The notebook runs nicely, I have the GPS modem, wifi and everything
>> working.
>> But when it comes to suspending the system, I have no luck.
>>
>> Setting the system to suspend using "echo mem > /proc/power/state" seems
>> to
>> suspend the system. At least it stops talking on the ethernet, switches
>> off the
>> screen, and the power button light is doing a slow and soft blinking.
>> That's all. I am completely unable to get the computer awake again. Power
>> button, wild fn+something combinations, closing and opening the lid,
>> connecting
>> and disconnecting power: Nothing helps. I have to turn off the computer
>> by
>> holding the power button.
>>
>> Downgrading to kernel 4.2.0 did not change anything BTW.
>>
>> I completely threw out all graphics drivers from the kernel, system
>> running in
>> text only mode.
>>
>> I further got a BIOS update from Lenovo. The version is now 1.11
>>
>> The computer's model name is 20BS.
>>
>> It's really really annoying :-(
>>
>> Does anyone has tips for me? Is my laptop broken? Did I forget something
>> fundamental?
>>
>> Kind regards
>>
>> Philipp
>>
>>
>>
>>
>>
>>
>>
>> --
>>
>>
>> Dipl.-Inf. (FH) Philipp Hachtmann
>> Buchdruck, Bleisatz, Spezialitšten
>>
>> Alemannstr. 21, D-30165 Hannover
>> Tel. 0511/3522222, Mobil 0171/2632239
>> Fax. 0511/3500439
>> philipp@hachtmann.com
>> www.tiegeldruck.de
>>
>> UStdID DE 202668329
>> --
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