We are getting that error when activating following config: [doesn't work] CONFIG_HZ=1000 CONFIG_HZ_1000=y # CONFIG_HZ_250 is not set CONFIG_IRQ_FORCED_THREADING_DEFAULT=y CONFIG_PREEMPT=y CONFIG_PREEMPT_RCU=y # CONFIG_PREEMPT_VOLUNTARY is not set [doesn't work] CONFIG_HZ=1000 CONFIG_HZ_1000=y # CONFIG_HZ_250 is not set CONFIG_IRQ_FORCED_THREADING_DEFAULT=y CONFIG_PREEMPT=n CONFIG_PREEMPT_RCU=n # CONFIG_PREEMPT_VOLUNTARY is not set [doesn't work] CONFIG_HZ=1000 CONFIG_HZ_1000=y # CONFIG_HZ_250 is not set CONFIG_IRQ_FORCED_THREADING_DEFAULT=n CONFIG_PREEMPT=y CONFIG_PREEMPT_RCU=y # CONFIG_PREEMPT_VOLUNTARY is not set [it works] CONFIG_HZ=1000 CONFIG_HZ_1000=y # CONFIG_HZ_250 is not set CONFIG_IRQ_FORCED_THREADING_DEFAULT=n CONFIG_PREEMPT=n CONFIG_PREEMPT_RCU=n # CONFIG_PREEMPT_VOLUNTARY is not set [it works] # CONFIG_HZ=1000 # CONFIG_HZ_1000=y CONFIG_IRQ_FORCED_THREADING_DEFAULT=n CONFIG_PREEMPT=n CONFIG_PREEMPT_RCU=n CONFIG_PREEMPT_VOLUNTARY=y https://launchpadlibrarian.net/164823785/bug1.txt
I have tried: acpi=off [doesn't work] idle=poll [doesn't work] maxcpus=0 [doesn't work]
Please attach the error traces
https://launchpadlibrarian.net/164823785/bug1.txt here it is
vboxpci(OF) vboxnetadp(OF) vboxnetflt(OF) vboxdrv(OF Please verify you can duplicate this without vbox modules having been loaded
# Virtual Box Drivers blacklist vboxpci blacklist vboxnetadp blacklist vboxnetflt blacklist vboxdrv added to /etc/modprobe.d/blacklist.conf
https://launchpadlibrarian.net/165298659/vboxdisabled2.log
# Virtual Box Drivers blacklist vboxpci blacklist vboxnetadp blacklist vboxnetflt blacklist vboxdrv added to /etc/modprobe.d/blacklist
The log on comment 6 is the one got with comment 7 changes
Can you clarify whether this is the base mainline tree or the preemprt-RT tree (as I see -lowlatency in the name) ?
I'm using ubuntu's source. The only diference between -generic and -lowlatency kernels are configuration, because they have the same source. So I suppose is mainline.
Other person with i386 processor is geting the same error.
*Another
I'm running the kernel on Ubuntu 13.10 and it works properly. However dkms can't compile vbox drivers, so perhaps you were right when you said it was a virtualbox problem.
In Ubuntu 13.10 I'm having blocks too with lowlatency kernel and adding nothreadingirqs. I have that this option made that every process can make the CPU stop doing what they were doing and take care of it. Then, it's some process blocking the CPU? How can I see which process it is?
It seems that, with 3.14-RC4, the problem is solved. However, my HDMI audio stop working (Radeon HD7760)
With Linux jaime-MS-7640 3.13.0-16-lowlatency #36-Ubuntu SMP PREEMPT Tue Mar 4 23:32:09 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux the problem is solved, too.