Re: Debian has become totally unusable on my amd64 system -- no stable kernel available
On Sat, 01 Feb 2014 11:58:06 -0500 (EST), Ben Hutchings wrote:
>
> It's not clear to me whether you were previously running an i386
> installation on the same hardware. If so, this behaviour is very
> surprising.
No, I'm comparing to an i386 system on different hardware.
>
> If this is a new system then I suspect there is a hardware fault, such
> as:
> - faulty memory (memtest86+ may be able to confirm this)
> - faulty disk controller
> - inadequate power supply
I may have found the problem. This problem may be related to Debian bug
number 736892. At last contact, the Debian package maintainer was
convinced that this is not a bug; and that everything is working as
designed. However, new evidence documented in my last post to the bug
report now has me convinced otherwise. I varied offline the two CPUs
which apparently did *not* get their microcode updated by means of
echo 0 >/sys/devices/system/cpu/cpu1/online
echo 0 >/sys/devices/system/cpu/cpu3/online
(issued as root), and so far, the system is now stable. I'm running
on half power, but at least the system is stable.
Of course, I have to be running a kernel that survives long enough for
me to login as root and issue these two commands before it crashes.
But once I get that far, I haven't had any problems since. I now
think 736892 really is a bug, and that it is the cause of the kernel
crashes I have been experiencing.
--
.''`. Stephen Powell
: :' :
`. `'`
`-
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