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I've noticed the bootup process pauses for a while. Can I fix this? Is it even worth trying? This system used to boot up faster.

uname -rp:

4.19.25-041925-generic x86_64

(I actually rolled back from 4.20.12 but there it took even longer.)

dmesg:

...

[    5.532700] Console: switching to colour frame buffer device 240x67
[    5.556565] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device
[    9.405339] ata1.00: qc timeout (cmd 0x47)
[    9.407728] ata1.00: READ LOG DMA EXT failed, trying PIO
[    9.407737] ata1.00: NCQ Send/Recv Log not supported
[    9.407742] ata1.00: ATA-10: FORESEE 128GB SSD, V3.15, max UDMA/133

...

[   18.675961] wlp1s0: associated
[   19.020500] IPv6: ADDRCONF(NETDEV_CHANGE): wlp1s0: link becomes ready
[   29.000586] Bluetooth: RFCOMM TTY layer initialized
[   29.000597] Bluetooth: RFCOMM socket layer initialized
[   29.000610] Bluetooth: RFCOMM ver 1.11
[   31.806813] rfkill: input handler disabled
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2
  • What version Ubuntu?
    – heynnema
    Commented Feb 24, 2019 at 14:57
  • It is 18.04.2 LTS!
    – Horse Weakness
    Commented Feb 24, 2019 at 15:42

1 Answer 1

Reset to default
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Note: You're using an unsupported kernel. 4.19 is known to corrupt file systems. Put the standard kernel back.

From what little log detail that you left for us to review, it looks like you might be getting NCQ errors on your disk. You might look at this more closely to see if there are a bunch more NCQ errors...

sudo grep -i ncq /var/log/syslog* # search for NCQ errors

If you find a bunch, then...

sudo -H gedit /etc/default/grub # edit the grub settings

Find the line near the top that says "quiet splash", and change it to read...

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash libata.force=noncq"

Save the file and then...

sudo update-grub # update grub files

reboot # reboot the computer

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11
  • Thank you! I thought it would be rude to have the full log in the question. Here it is now. pastebin.com/x2pWgDRX
    – Horse Weakness
    Commented Feb 24, 2019 at 15:39
  • I have disabled NCQ (I don't even know what it is) but the startup does not become quicker.
    – Horse Weakness
    Commented Feb 24, 2019 at 15:40
  • I tried to change the kernel because my laptop touchpad wasn't supported by what I had by default. I used ukuu to do so.
    – Horse Weakness
    Commented Feb 24, 2019 at 15:44
  • Then I'd remove the noncq kernel parameter. Kernel 4.19 shows "Speculative Store Bypass: Vulnerable" so you could catch something, and it's known to corrupt filesystems... go back to a supported kernel.
    – heynnema
    Commented Feb 24, 2019 at 15:49
  • Thank you. By the way, how do I know if it is supported? Supported by what: by Ubuntu or by my hardware?
    – Horse Weakness
    Commented Feb 24, 2019 at 15:55

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