Here are the outputs of 2 consecutive boots for dmesg | less, they both
indicate 26 lost CPU seconds:
[ 12.580984] vboxdrv: Successfully loaded version 4.3.10_Ubuntu (interface
0x001a0007).
[ 12.593834] vboxpci: IOMMU not found (not registered)
[ 13.307547] IPv6: ADDRCONF(NETDEV_UP):
Public bug reported:
Subjectively, my system slowed down after the recent GRUB update.
As you can see from the following, audit_printk_skb is consuming a lot
of boot time:
[ 13.243280] vboxdrv: Successfully loaded version 4.3.10_Ubuntu (interface
0x001a0007).
[ 13.257947] vboxpci: IOMMU
Public bug reported:
Occurs randomly.
See screenshot for details.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: apport-gtk 2.14.1-0ubuntu3.11
ProcVersionSignature: Ubuntu 3.13.0-55.94-generic 3.13.11-ckt20
Uname: Linux 3.13.0-55-generic i686
ApportLog:
ERROR: apport (pid 17566) Thu Jun
You will find attached a sample bootchart.
** Attachment added: x-trusty-20150801-1.png
https://bugs.launchpad.net/ubuntu/+source/apparmor/+bug/1458014/+attachment/4437539/+files/x-trusty-20150801-1.png
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I have added /etc/sysctl.d/99-printk_ratelimiting.conf with
kernel.printk_ratelimit=0 and rebooted.
Then I removed the file and rebooted yet again.
Each time I captured the last few lines of dmesg | less
The log is attached.
Could you please explain the first log output
I will look into bootcharts as soon as possible.
I was expecting more info from the log of step #6.
You will recall that rate limiting gave the following kind of output:
[ 17.062400] init: plymouth-upstart-bridge main process ended, respawning
[ 42.218430] audit_printk_skb: 177 callbacks
apport information
** Attachment added: "LightdmGreeterLogOld.txt"
https://bugs.launchpad.net/bugs/1313158/+attachment/4475996/+files/LightdmGreeterLogOld.txt
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apport information
** Attachment added: "LightdmDisplayLog.txt"
https://bugs.launchpad.net/bugs/1313158/+attachment/4475994/+files/LightdmDisplayLog.txt
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apport information
** Attachment added: "UdevLog.txt"
https://bugs.launchpad.net/bugs/1313158/+attachment/4476004/+files/UdevLog.txt
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apport information
** Attachment added: "xdpyinfo.txt"
https://bugs.launchpad.net/bugs/1313158/+attachment/4476009/+files/xdpyinfo.txt
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apport information
** Attachment added: "xserver.devices.txt"
https://bugs.launchpad.net/bugs/1313158/+attachment/4476010/+files/xserver.devices.txt
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apport information
** Attachment added: "LightdmLog.txt"
https://bugs.launchpad.net/bugs/1313158/+attachment/4475997/+files/LightdmLog.txt
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apport information
** Attachment added: "XorgLog.txt"
https://bugs.launchpad.net/bugs/1313158/+attachment/4476006/+files/XorgLog.txt
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apport information
** Attachment added: "UnitySupportTest.txt"
https://bugs.launchpad.net/bugs/1313158/+attachment/4476005/+files/UnitySupportTest.txt
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apport information
** Attachment added: "UdevDb.txt"
https://bugs.launchpad.net/bugs/1313158/+attachment/4476003/+files/UdevDb.txt
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apport information
** Attachment added: "Lsusb.txt"
https://bugs.launchpad.net/bugs/1313158/+attachment/4475999/+files/Lsusb.txt
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apport information
** Attachment added: "ProcInterrupts.txt"
https://bugs.launchpad.net/bugs/1313158/+attachment/4476001/+files/ProcInterrupts.txt
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apport information
** Attachment added: "Xrandr.txt"
https://bugs.launchpad.net/bugs/1313158/+attachment/4476008/+files/Xrandr.txt
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apport information
** Attachment added: "XorgLogOld.txt"
https://bugs.launchpad.net/bugs/1313158/+attachment/4476007/+files/XorgLogOld.txt
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apport information
** Attachment added: "xserver.outputs.txt"
https://bugs.launchpad.net/bugs/1313158/+attachment/4476011/+files/xserver.outputs.txt
** Changed in: xorg (Ubuntu)
Status: Incomplete => New
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Could Bug #1499756 have anything to do with this issue?
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https://bugs.launchpad.net/bugs/1313158
Title:
Graphics lag and jerk with nVidia card
Status in
apport information
** Tags added: apport-collected compiz-0.9 ubuntu
** Description changed:
A Dell Inspiron 660 without nVidia graphics works fine.
The same machine with an nVidia card lags and jerks when dragging a
window or scrolling a browser page.
Most annoying.
I do not
apport information
** Attachment added: "BootLog.txt"
https://bugs.launchpad.net/bugs/1313158/+attachment/4475988/+files/BootLog.txt
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apport information
** Attachment added: "Dependencies.txt"
https://bugs.launchpad.net/bugs/1313158/+attachment/4475990/+files/Dependencies.txt
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apport information
** Attachment added: "DpkgLog.txt"
https://bugs.launchpad.net/bugs/1313158/+attachment/4475992/+files/DpkgLog.txt
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apport information
** Attachment added: "GconfCompiz.txt"
https://bugs.launchpad.net/bugs/1313158/+attachment/4475993/+files/GconfCompiz.txt
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apport information
** Attachment added: "CurrentDmesg.txt"
https://bugs.launchpad.net/bugs/1313158/+attachment/4475989/+files/CurrentDmesg.txt
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apport information
** Attachment added: "DkmsStatus.txt"
https://bugs.launchpad.net/bugs/1313158/+attachment/4475991/+files/DkmsStatus.txt
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apport information
** Attachment added: "LightdmGreeterLog.txt"
https://bugs.launchpad.net/bugs/1313158/+attachment/4475995/+files/LightdmGreeterLog.txt
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apport information
** Attachment added: "ProcModules.txt"
https://bugs.launchpad.net/bugs/1313158/+attachment/4476002/+files/ProcModules.txt
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apport information
** Attachment added: "ProcCpuinfo.txt"
https://bugs.launchpad.net/bugs/1313158/+attachment/4476000/+files/ProcCpuinfo.txt
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apport information
** Attachment added: "Lspci.txt"
https://bugs.launchpad.net/bugs/1313158/+attachment/4475998/+files/Lspci.txt
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I will be installing Ubuntu 16.04 this month and thus lose the ability
to analyze this bug as 14.04 will be overwritten.
Can we address this bug now, please, for the benefit of the 14.04
community?
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screenshot for Processes
** Attachment added: "Screenshot from 2016-03-25 08:43:15.png"
https://bugs.launchpad.net/ubuntu/+source/initramfs-tools/+bug/1561973/+attachment/4611179/+files/Screenshot%20from%202016-03-25%2008%3A43%3A15.png
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Public bug reported:
This morning, synaptic offered 2 candidates after clicking on Mark All
Upgrades.
Both were for initramfs.
After the upgrades were completed, I logged out of the admin account and
into the regular user account.
The regular account is very sluggish. The 4 CPU cores consume
The guest user account is ok. The admin user account is ok.
The only account with this problem is the regular user account where all
the web browsing occurs.
In System Monitor, if I click on either of the Processes or File Systems
tabs and stay there for 15 seconds or more, then click back on
I completely removed gnome-system-monitor and reinstalled. It made no
difference.
I repeatedly clicked on Refresh in the Processes tab of System Monitor.
Some suspiciously large CPU usage values were seen for gnome-system-
monitor like 25% (see attached) while the system was idle.
**
Public bug reported:
Repeated runs of rsync from PC to USB key send everything, not just the
changes.
This is reproducible.
ProblemType: Bug
DistroRelease: Ubuntu 19.04
Package: rsync 3.1.3-6
ProcVersionSignature: Ubuntu 5.0.0-29.31-generic 5.0.21
Uname: Linux 5.0.0-29-generic x86_64
The following
rsync -v -a -r -W -p -o -g -t --delete --stats
--exclude=".*"
--exclude="/snap*"
~
/media/$USER/USB-128GB-3/
>bkp_log
copies all contents of home folder each time it is run.
The expectation is that only changed files will be copied and replaced
on the target.
This is
I frequently rebuild USB keys.
If memory serves me correctly, the USB device was LUKS encrypted ext4.
** Changed in: rsync (Ubuntu)
Status: Incomplete => New
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On a prior OS (16.04 or 18.04, cannot remember which) the following
rsync -v -a -r -W -p -o -g -t --delete --stats ~/Pictures /media/$USER
/USB-128GB-1/ >bkp_log
would only send differences on subsequent runs with a fat32 USB key.
Your test above seems to indicate that subsequent runs on 19.04
I have run 2 test scenarios.
A trivial folder containing 3 text files as source.
A real world case of ~/ as source.
Both cases work as expected on an LUKS encrypted ext4 USB key.
I will do some more testing on fat32 and report back.
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