Suspend for the X1 Carbon 2018 on Linux

#1

Post by fiji-flo » Tue, Jul 17, 2018, 5:12 PM UTC

Suspend for the X1 Carbon 2018 on Linux
github.com

Re: Suspend for the X1 Carbon 2018 on Linux

#2

Post by rubbingalcohol » Tue, Jul 17, 2018, 5:28 PM UTC

It's probably because Lenovo's suspend feature relies on an unsigned binary blob from China sideloaded during system boot over an unsecure HTTP connection.

Why anyone still trusts Lenovo enough for this sort of thing to come up as an issue is beyond me.

Re: Suspend for the X1 Carbon 2018 on Linux

#3

Post by aclave1 » Tue, Jul 17, 2018, 5:28 PM UTC

I planned to buy this laptop some time this year. Has lenovo stopped supporting linux as well as they used to? I've owned two lenovo laptops and loved them and planned to buy another. I'm also looking at dell laptops since their linux support is reportedly excellent.

Re: Suspend for the X1 Carbon 2018 on Linux

#4

Post by gtirloni » Tue, Jul 17, 2018, 5:28 PM UTC

Unnecessary headline editorializing. Could we have it changed to the original?

Re: Suspend for the X1 Carbon 2018 on Linux

#5

Post by 1996 » Tue, Jul 17, 2018, 5:29 PM UTC

This is short on details. So here are some more: since S0 ( active suspend) became more popular with windows 10, most manufacturers have decided to REMOVE THE CODE from the bios that allows S3 (suspend to ram).

Worst case is they left the stubs pretending S3 is supported, so the computer goes to sleep - but never wakes up! Dell, I'm looking at you!!

Workarounds come from redoing the S3 code, mostly in ACPI tables with triggers - for all peripherals.

It is a shame, as in S3 most laptops eat less that 1% of the battery per hour, while in S0 such good results require heavy configuration to prevent the "active" part of active sleep, and make sure the laptop never wakes up until you actually press on the power button. But I guess it is the road to progress, as S0 is more flexible.

Re: Suspend for the X1 Carbon 2018 on Linux

#6

Post by [deleted] » Tue, Jul 17, 2018, 5:29 PM UTC

gtirloni wrote: post #4

Unnecessary headline editorializing. Could we have it changed to the original?

[deleted]

Re: Suspend for the X1 Carbon 2018 on Linux

#7

Post by 1996 » Tue, Jul 17, 2018, 5:30 PM UTC

gtirloni wrote: post #4

Unnecessary headline editorializing. Could we have it changed to the original?

If you know why S3 does not work on some brands, the editorializing is not unwarranted.

There was an active decision to remove working parts of the code. That is shameful.

Re: Suspend for the X1 Carbon 2018 on Linux

#8

Post by organsnyder » Tue, Jul 17, 2018, 5:30 PM UTC

rubbingalcohol wrote: post #2

It's probably because Lenovo's suspend feature relies on an unsigned binary blob from China sideloaded during system boot over an unsecure HTTP connection. Why anyone still trusts Lenovo enough for this sort of thing to come up as an issue is beyond me.

Citation on that? Never heard that before, and I own two ThinkPads (including a four-month-old T480).

Re: Suspend for the X1 Carbon 2018 on Linux

#9

Post by 1996 » Tue, Jul 17, 2018, 5:31 PM UTC

aclave1 wrote: post #3

I planned to buy this laptop some time this year. Has lenovo stopped supporting linux as well as they used to? I've owned two lenovo laptops and loved them and planned to buy another. I'm also looking at dell laptops since their linux support is reportedly excellent.

I'm considering a Fujitsu lifebook U937 to replace my thinkpad.

Re: Suspend for the X1 Carbon 2018 on Linux

#10

Post by n0ric » Tue, Jul 17, 2018, 5:32 PM UTC

aclave1 wrote: post #3

I planned to buy this laptop some time this year. Has lenovo stopped supporting linux as well as they used to? I've owned two lenovo laptops and loved them and planned to buy another. I'm also looking at dell laptops since their linux support is reportedly excellent.

My current laptop, the T450s, has full support for linux. My coworker uses a X270, which also seems to run Arch fine. I think it's just the X1 series with these issues.