17 seconds delay at boot

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my Ubuntu install take extraordinary amount of time to boot. I have a MacBook Air 2014 with Ubuntu 16.04 installed on a USB stick. According to dmesg the delay is here:



[ 3.166478] sd 1:0:0:0: Attached scsi generic sg1 type 0
[ 3.167125] sd 1:0:0:0: [sdb] 60063744 512-byte logical blocks: (30.8 GB/28.6 GiB)
[ 3.168958] sd 1:0:0:0: [sdb] Write Protect is off
[ 3.168962] sd 1:0:0:0: [sdb] Mode Sense: 43 00 00 00
[ 3.169826] sd 1:0:0:0: [sdb] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
[ 3.202890] sdb: sdb1 sdb2 < sdb5 >
[ 3.205129] sd 1:0:0:0: [sdb] Attached SCSI removable disk
[ 3.548151] clocksource: Switched to clocksource tsc
[ 3.581976] scsi 2:0:0:0: Direct-Access APPLE SD Card Reader 3.00 PQ: 0 ANSI: 6
[ 3.582455] sd 2:0:0:0: Attached scsi generic sg2 type 0
[ 3.583683] sd 2:0:0:0: [sdc] Attached SCSI removable disk
[ 20.022675] EXT4-fs (dm-0): mounted filesystem with ordered data mode. Opts: (null)
[ 20.403096] systemd[1]: systemd 229 running in system mode. (+PAM +AUDIT +SELINUX +IMA +APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ -LZ4 +SECCOMP +BLKID +ELFUTILS +KMOD -IDN)
[ 20.420092] systemd[1]: Detected architecture x86-64.


Any ideas how to fix this?







share|improve this question






















  • So, Ubuntu is on a USB stick? These can be slow, which may be the cause of the delay. It is not unusual to have such a delay for HDDs too. You'll need an SSD to get rid of it.
    – mikewhatever
    Apr 21 at 10:20







  • 1




    Another command you can try is systemd-analyze blame which lists how long each step takes to execute.
    – WinEunuuchs2Unix
    Apr 21 at 11:03














up vote
0
down vote

favorite












my Ubuntu install take extraordinary amount of time to boot. I have a MacBook Air 2014 with Ubuntu 16.04 installed on a USB stick. According to dmesg the delay is here:



[ 3.166478] sd 1:0:0:0: Attached scsi generic sg1 type 0
[ 3.167125] sd 1:0:0:0: [sdb] 60063744 512-byte logical blocks: (30.8 GB/28.6 GiB)
[ 3.168958] sd 1:0:0:0: [sdb] Write Protect is off
[ 3.168962] sd 1:0:0:0: [sdb] Mode Sense: 43 00 00 00
[ 3.169826] sd 1:0:0:0: [sdb] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
[ 3.202890] sdb: sdb1 sdb2 < sdb5 >
[ 3.205129] sd 1:0:0:0: [sdb] Attached SCSI removable disk
[ 3.548151] clocksource: Switched to clocksource tsc
[ 3.581976] scsi 2:0:0:0: Direct-Access APPLE SD Card Reader 3.00 PQ: 0 ANSI: 6
[ 3.582455] sd 2:0:0:0: Attached scsi generic sg2 type 0
[ 3.583683] sd 2:0:0:0: [sdc] Attached SCSI removable disk
[ 20.022675] EXT4-fs (dm-0): mounted filesystem with ordered data mode. Opts: (null)
[ 20.403096] systemd[1]: systemd 229 running in system mode. (+PAM +AUDIT +SELINUX +IMA +APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ -LZ4 +SECCOMP +BLKID +ELFUTILS +KMOD -IDN)
[ 20.420092] systemd[1]: Detected architecture x86-64.


Any ideas how to fix this?







share|improve this question






















  • So, Ubuntu is on a USB stick? These can be slow, which may be the cause of the delay. It is not unusual to have such a delay for HDDs too. You'll need an SSD to get rid of it.
    – mikewhatever
    Apr 21 at 10:20







  • 1




    Another command you can try is systemd-analyze blame which lists how long each step takes to execute.
    – WinEunuuchs2Unix
    Apr 21 at 11:03












up vote
0
down vote

favorite









up vote
0
down vote

favorite











my Ubuntu install take extraordinary amount of time to boot. I have a MacBook Air 2014 with Ubuntu 16.04 installed on a USB stick. According to dmesg the delay is here:



[ 3.166478] sd 1:0:0:0: Attached scsi generic sg1 type 0
[ 3.167125] sd 1:0:0:0: [sdb] 60063744 512-byte logical blocks: (30.8 GB/28.6 GiB)
[ 3.168958] sd 1:0:0:0: [sdb] Write Protect is off
[ 3.168962] sd 1:0:0:0: [sdb] Mode Sense: 43 00 00 00
[ 3.169826] sd 1:0:0:0: [sdb] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
[ 3.202890] sdb: sdb1 sdb2 < sdb5 >
[ 3.205129] sd 1:0:0:0: [sdb] Attached SCSI removable disk
[ 3.548151] clocksource: Switched to clocksource tsc
[ 3.581976] scsi 2:0:0:0: Direct-Access APPLE SD Card Reader 3.00 PQ: 0 ANSI: 6
[ 3.582455] sd 2:0:0:0: Attached scsi generic sg2 type 0
[ 3.583683] sd 2:0:0:0: [sdc] Attached SCSI removable disk
[ 20.022675] EXT4-fs (dm-0): mounted filesystem with ordered data mode. Opts: (null)
[ 20.403096] systemd[1]: systemd 229 running in system mode. (+PAM +AUDIT +SELINUX +IMA +APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ -LZ4 +SECCOMP +BLKID +ELFUTILS +KMOD -IDN)
[ 20.420092] systemd[1]: Detected architecture x86-64.


Any ideas how to fix this?







share|improve this question














my Ubuntu install take extraordinary amount of time to boot. I have a MacBook Air 2014 with Ubuntu 16.04 installed on a USB stick. According to dmesg the delay is here:



[ 3.166478] sd 1:0:0:0: Attached scsi generic sg1 type 0
[ 3.167125] sd 1:0:0:0: [sdb] 60063744 512-byte logical blocks: (30.8 GB/28.6 GiB)
[ 3.168958] sd 1:0:0:0: [sdb] Write Protect is off
[ 3.168962] sd 1:0:0:0: [sdb] Mode Sense: 43 00 00 00
[ 3.169826] sd 1:0:0:0: [sdb] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
[ 3.202890] sdb: sdb1 sdb2 < sdb5 >
[ 3.205129] sd 1:0:0:0: [sdb] Attached SCSI removable disk
[ 3.548151] clocksource: Switched to clocksource tsc
[ 3.581976] scsi 2:0:0:0: Direct-Access APPLE SD Card Reader 3.00 PQ: 0 ANSI: 6
[ 3.582455] sd 2:0:0:0: Attached scsi generic sg2 type 0
[ 3.583683] sd 2:0:0:0: [sdc] Attached SCSI removable disk
[ 20.022675] EXT4-fs (dm-0): mounted filesystem with ordered data mode. Opts: (null)
[ 20.403096] systemd[1]: systemd 229 running in system mode. (+PAM +AUDIT +SELINUX +IMA +APPARMOR +SMACK +SYSVINIT +UTMP +LIBCRYPTSETUP +GCRYPT +GNUTLS +ACL +XZ -LZ4 +SECCOMP +BLKID +ELFUTILS +KMOD -IDN)
[ 20.420092] systemd[1]: Detected architecture x86-64.


Any ideas how to fix this?









share|improve this question













share|improve this question




share|improve this question








edited Apr 21 at 9:58









pomsky

22.6k77096




22.6k77096










asked Apr 21 at 9:35









Michal

1




1











  • So, Ubuntu is on a USB stick? These can be slow, which may be the cause of the delay. It is not unusual to have such a delay for HDDs too. You'll need an SSD to get rid of it.
    – mikewhatever
    Apr 21 at 10:20







  • 1




    Another command you can try is systemd-analyze blame which lists how long each step takes to execute.
    – WinEunuuchs2Unix
    Apr 21 at 11:03
















  • So, Ubuntu is on a USB stick? These can be slow, which may be the cause of the delay. It is not unusual to have such a delay for HDDs too. You'll need an SSD to get rid of it.
    – mikewhatever
    Apr 21 at 10:20







  • 1




    Another command you can try is systemd-analyze blame which lists how long each step takes to execute.
    – WinEunuuchs2Unix
    Apr 21 at 11:03















So, Ubuntu is on a USB stick? These can be slow, which may be the cause of the delay. It is not unusual to have such a delay for HDDs too. You'll need an SSD to get rid of it.
– mikewhatever
Apr 21 at 10:20





So, Ubuntu is on a USB stick? These can be slow, which may be the cause of the delay. It is not unusual to have such a delay for HDDs too. You'll need an SSD to get rid of it.
– mikewhatever
Apr 21 at 10:20





1




1




Another command you can try is systemd-analyze blame which lists how long each step takes to execute.
– WinEunuuchs2Unix
Apr 21 at 11:03




Another command you can try is systemd-analyze blame which lists how long each step takes to execute.
– WinEunuuchs2Unix
Apr 21 at 11:03















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