Since I have installed 12.2 I am experiencing intermittent boot freezes when going through the default GRUB menu option.
There does not seem to be a pattern when the freeze takes place.
I have not seen the problem when going via GRUB recovery mode.
Suspecting the NVidia driver, I have added “nomodeset” to the GRUB options, but it does not solve the problem.
On 01/20/2013 04:06 PM, u20380 wrote:
> intermittent boot freezes . . . There does not seem to be a pattern
> when the freeze takes place . . . Occasionally I see the following
> error message when the system freezes:
it may not be important in your case, but sometimes apparently totally
random problems spring from consistent but varying hardware problems…
yes, i know the system has probably been like a rock, but now with this
new 12.2 there is a problem–and logically it must be a software
problem–but still it could be that the new kernel/system is
particularly sensitive to tiny voltage variances/spikes/drops which might be from (for example) a weak or failing power supply unit
(PSU)… (or a loose ground somewhere, or … or … or)
i see the machine has four hard drives, a power munching CPU, and
multiple video/audio cards…could it be that your PSU is just not up to
the task…or, maybe was one day but not today…
PSUs do fail eventually, and often they degrade slowly, causing all
kinds of seemingly unrelated problems for months and months . . .
i can’t guess the total power needs for your system, but i’d guess you
probably need at least a 500W unit in good working order (and has had
the dust and chicken bones blown out lately)
on the other hand, the next poster might know exactly what is upsetting
the kernel…at least this google seems to indicate it is a kernel
openSUSE®, the “German Engineered Automobile” of operating systems!
Thanks for sharing your thoughts. Indeed the system has a lot of power consumers in it.
The power supply is a Seasonic M12II Bronze 520W.
I myself was thinking perhaps critical memory timing or disk not appearing in time when mounted might cause the problem.
What still puzzles me is the fact that the system starts without problems in recovery mode. To me that suggests it is more a software than a hardware issue.
On 01/20/2013 05:06 PM, u20380 wrote:
> What still puzzles me is the fact that the system starts without
> problems in recovery mode.
then to find “the problem” one needs only to compare the kernel boot
options passed during a “recovery mode” boot and a normal boot, and then
experiment with various options until you find what it is that is
causing the freezes (i’d guess
that was pretty easy to do before systemd, but i have no idea if there
is even such a thing as /boot/grub/menu.lst still <i may have to stay
on 11.4 forever.>
but, i GUESS adding one of these to the normal boot options will result
in ‘never’ having a boot freeze (but, there WILL be other side issues
like running hotter, or less battery life, or or or or or):
CAUTION: read the caveat in my sig before trying any of these…and get
someone here to help you find the actual list of failsafe boot options
on YOUR machine…don’t try any of mine (above) that are not on your
I have noticed an error message “Clocksource tsc unstable”, then and unrecoverable ohci_hcd error.
I have added “processor.max_cstate=1” to the GRUB options. This controls the CPU power saving, it seems.
Adding “processor.max_cstate=1” seems to have resolved the boot freeze.