i have the same messages:Clocksource tsc unstable (delta = -293719238 ns) i find this in internet:
"TSC=Time Stamp Counter. Processors have dynamically changed clock speed (ofc to save power). The TSC is supposed to tick at the CPU rate (unless it's a constant_tsc, see /proc/cpuinfo flags, so on frequency change, this ought to happen. The kernel will automatically switch to something else. There's acpi_pm <-(this is what yours has switched to) and, IIRC, pit. This message seems to appear with the newer kernel upgrades." Check you have installed another clock source like acpi_pm cat /sys/devices/system/clocksource/clocksource0/available_clocksource You can try adding the below to your kernel command line. This won't get rid of the unstable line but it will force the kernel to use a more stable clocksource so there should be no trouble switching over anymore (if indeed there is trouble to begin with). clocksource=acpi_pm (or hpet) I will make probe but in moment i must see how cann type this command for grub2. Please the post the results. -- log out after Clocksource tsc unstable https://bugs.launchpad.net/bugs/457100 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs