I've been dual booting my MBA with Ubuntu (first 17.10, now 18.04) and have a fairly stable system. One problem I've had for some time is a slow wake/recovery from sleep. This is unpredictable and manifests in one of two ways:

  1. After opening the lid, the screen stays off for about a minute before waking to the login screen.
  2. After opening the lid, the screen very briefly turns on (with the login screen), then turns off for 2-5 ish minutes.

Occasionally, opening the lid will simply show the login screen immediately without any problems, but that seems less common recently.

I'm using powertop but not TLP.

dmesg -l emerg,alert,crit,err shows a ton of

[25537.777224] ata1.00: failed command: WRITE FPDMA QUEUED
[25537.777238] ata1.00: cmd 61/08:d8:08:98:9c/00:00:0c:00:00/40 tag 27 ncq dma 4096 out
                        res 40/00:f4:10:99:9c/00:00:0d:00:00/40 Emask 0x10 (ATA bus error)
[25537.777244] ata1.00: status: { DRDY }

I understand these to indicate a power supply related issue, which I find strange considering the nature of macbook air hardware.

less /var/log/kern.log output includes a lot of these errors

Oct 17 18:02:42 luft kernel: [15803.296167] ERROR @wl_cfg80211_get_station : 
Oct 17 18:02:42 luft kernel: [15803.296170] Wrong Mac address, mac = [redacted]   profile =[redacted]

and here's a log from a recent suspend-resume. Looks like some Gnome extensions are crashing after the lid closes (lines 1-999), then the system finally reaches sleep and suspend, but on resume it tries to suspend again (lines 1136, 1141-1145).

So, my questions:

  • What is causing the system to suspend immediately after opening the lid?
  • How do I fix it?
  • Is it related to the first two kernel log errors I've indicated?
  • (are those serious and how do I address them?)


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