Ubuntu 14.04 lts slow boot, several minutes - Ask Ubuntu


i use ubuntu 14.04 in laptop hp pavillion (4gb ram), in dual boot windows 10. lately i've realised after select ubuntu on grub takes several minutes start. i'd tips fixing problem, since i'm not expert of ubuntu.

this bootchart bootchart

from dmesg suspicious point this

[   21.819255] fbcon: radeondrmfb (fb0) primary device  [   21.819332] console: switching colour frame buffer device 170x48  [   21.819366] radeon 0000:01:00.0: fb0: radeondrmfb frame buffer device  [   21.819368] radeon 0000:01:00.0: registered panic notifier  [   21.828388] [drm] initialized radeon 2.40.0 20080528 0000:01:00.0 on minor 0  [  149.519775] init: failsafe main process (735) killed term signal  [  150.838440] audit_printk_skb: 6 callbacks suppressed  [  150.838444] audit: type=1400 audit(1477752769.503:14): apparmor="status" operation="profile_replace" profile="unconfined" name="/sbin/dhclient" pid=890 comm="apparmor_parser"

a delay of more 100 seconds.

if give me advice i'll grateful


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