Suspend for the X1 Carbon 2018 on Linux

Re:Suspend for the X1 Carbon 2018 on Linux by rayiner on Tuesday July 17, 2018 @05:20PM (#17553521)

> Thankfully, ACPI is now appearing on higher end ARM stuff (servers like ThunderX, workstations like Overdrive, hopefully the new Microsoft always-connected laptops?)

I can't believe anyone would be thankful about ACPI. Is there a machine with ACPI that isn't broken in some way? My brand new Lenovo, which multiple sites have crowned the "best" PC laptop, ships with a LTE card that can't properly power down, and causes PCI-E ASPM to be disabled. Even Microsoft has f--ked up power management repeatedly in the Surface line.

Power management on PCs is such a disaster that it calls into question the very idea of doing power management for computers built out of mix-and-match components through standards like ACPI.

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Re:Suspend for the X1 Carbon 2018 on Linux by rektide on Thursday July 19, 2018 @03:23PM (#17569480)

I dunno. I've worked with a bunch of different ARM chips and each one's workflow is "build a kernel, build an initrd, then use this magic tool to get our boot ROM to load it" and that's always been gross & dumb.

I'm not necessarily cheery about ACPI in practice, but ACPI & UEFI in theory provide some kind of substrate to manage the platform, that's not just whatever the engineers are some shop cooked up this time.

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Re:Suspend for the X1 Carbon 2018 on Linux by floatboth on Thursday July 19, 2018 @03:56PM (#17569710)

Thanks to Flattened Device Trees, you don't have to build special per device kernels, you can just have a generic kernel that includes drivers for all the SoCs.

But having individual drivers per SoC in the kernel for things like power management still sucks.

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