Suspend with NVME not working - Default Debian
#3
(02-06-2020, 08:06 PM)Jeremiah Cornelius Wrote: This is probably related to the same nvme issues I solved for Linux on the Macbook Pro, recently. The drive would "sleep" but then resume as read-only - with unpredictable effects!

The Macs don't support APST, and many nvme units also seem to be "idiosyncratic" about implementations. The fix is to "turn-off" the ability of the kernel to impose sleep states on hardware that does not conform.

After researching a bit about this, my solution was:
echo 0 > /sys/bus/pci/devices/0000\:01\:00.0/d3cold_allowed

This is now featured on the authoritative  Dunedan /mbp-2016-linux github: https://github.com/Dunedan/mbp-2016-linux

This needs to be done in a root shell, sudo user won't cut it. You can elevate by runing 'sudo su -' and have a root shell, without additional login process.
I'd seriously give this a shot, AFTER you determine with lspci the actual device number for your nvme.

If this solves your problem, I supplied scripts and a systemd service wrapper, so you may automate at boot:
https://github.com/cb22/macbook12-spi-dr...-540208177

Create this file:

Quote:/etc/systemd/system/fix_sleep.service

# systemd oneshot service to set sleep boolean on Apple Macbook Pro disks
# Original by Pier Lim. Posted at https://kerpanic.wordpress.com/2018/03/1...in-ubuntu/

   [Unit]
   Description=Job that disables sleep from stopping nvme hardware on MBP
   
   [Service]
   ExecStart=/sbin/fixsleep
   Type=oneshot
   RemainAfterExit=yes

   [Install]
   WantedBy=multi-user.target


And the actual script:

Quote:/sbin/fixsleep

#!/bin/bash
/bin/echo 0 > /sys/bus/pci/devices/0000\:01\:00.0/d3cold_allowed

If you try this out, I'd love to hear how it goes.

My output from lspci:


Code:
00:00.0 PCI bridge: Device 1d87:0100
01:00.0 Non-Volatile memory controller: Intel Corporation Device f1a8 (rev 03)

Do I have to modify that command with this information somehow?


Messages In This Thread
RE: Suspend with NVME not working - Default Debian - by appdev46 - 02-06-2020, 08:49 PM

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