It affects me from time to time. On an Asus UX305F, on Ubuntu Gnome 16.10.
Very very very slow screen refresh, unless I move the mouse.
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I want to confirm that the bug still exist for the TOSHIBA NB200.
I tried with Ubuntu 12.04 and 14.04 but i could work.. it was freezing even if
I had the option quiet splash nohz=off
for the grub (this option worked with older versions of kernel)
Then I tried lubuntu 12.04 and 14.04 but it was
The bug of the full processor core has been fixed by the new kernel.
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https://bugs.launchpad.net/bugs/657990
Title:
System freeze when i'am not moving
OK, I've done what you said but I don't understand anything.
$ sar -I XALL 2 1 | less
Shows that 0 interrupt is the problem (if I understood well).
$ cat /proc/interrupts
Show that the 0 interrupt refers to timer. (See screenshot)
What can I do ?
I had to disable lapic timer to prevent system
Romain, I'd sas that for additional troubleshooting the issue the following
article may give you some hints:
http://linoxide.com/how-tos/cpu-bottleneck-linux/
You should have the following packages installed: procps and sysstat.
First, maximize the terminal window. Then run vmstat and mpstat
I've set Htop as you said.
Here is the new screenshot. Nothing is different.
That's strange it's like the system thinks my computer just has a one core CPU.
** Attachment added: Capture du 2014-05-21 00:34:10.png
Romain, red CPU time is related to kernel. In htop you can press F2 and
set display options as shown on the attached screenshot in order to get
more details on kernel threads. (Press Esc to go back to process list.)
** Attachment added: htop_setup.png
Hi,
I have the same issue on Ubuntu 14.04.
I tried setting GRUB_CMDLINE_LINUX_DEFAULT=quiet splash nolapic_timer
clocksource=jiffies
I works, but, when I open Gnome System Monitor, I see that my first Core
is always between 95 et 100% and the other one seems to work normally.
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Romain, could you install htop and run the htop command from command
line to see what process is causing high CPU usage?
Maximize the terminal window, start htop and sort processes by CPU% (F6,
then choose PERCENT_CPU).
-- rpr.
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Here it is.
As you can see in details, none of the process takes more than 1.9% but
the 1rst core line is red and full.
** Attachment added: Capture du 2014-05-16 18:40:27.png
Prajna, what version is your linux kernel? (Run uname -a)
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https://bugs.launchpad.net/bugs/657990
Title:
System freeze when i'am not moving the mouse
@rpr 3.13.0-24-generic #46-Ubuntu SMP Thu Apr 10 19:08:14 UTC 2014 i686
i686 i686 GNU/Linux
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https://bugs.launchpad.net/bugs/657990
Title:
System
I'd like to report that this bug still persists in 12.04 and 14.04 on a
Toshiba NB200.
I have worked round it on 14.04 with the GRUB_CMDLINE_LINUX_DEFAULT=quiet
splash nolapic_timer clocksource=jiffies
line in /etc/default/grub as mentioned above.
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** Changed in: linux
Status: Unknown = Fix Released
** Changed in: linux
Importance: Unknown = Medium
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** Changed in: linux
Importance: Undecided = Unknown
** Changed in: linux
Status: New = Unknown
** Changed in: linux
Remote watch: None = Linux Kernel Bug Tracker #20172
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