Kernel 'bisection'

Dave Woyciesjes woyciesjes at
Tue Feb 17 16:06:39 UTC 2015

On 02/17/2015 10:42 AM, Chris wrote:
> On Tue, 2015-02-17 at 15:55 +0100, Liam Proven wrote:
>> On 14 February 2015 at 17:50, Gene Heskett <gheskett at> wrote:
>>> You Liam, I would think would know what that is, but when you are building
>>> your own kernels, and the next version you build doesn't work, you backup
>>> to an older version that does work, then apply half of the patches in the
>>> same sequence as they were applied to get from one that works to one that
>>> doesn't to build an intermediate kernel & see if it works, if not, next
>>> pass only applies 1/4 of the patches, or if it does work, apply 1/4 of the
>>> remaining patches.  In 8 or maybe 9 such builds you can nail it down to
>>> the specific patch that broke it.  Successive approximation, works well
>>> for finding bad patches.  Works well if you are following the -rc# as they
>>> are released, but it does get cumbersome to find whu a 2.6.32 works, but a
>>> 3.18 doesn't. That may take twice the builds.
>> I don't build my own kernels, though, and haven't done this century.
>> Sure, I used to in the mid-1990s, when you had to do that kind of
>> fooling around, but things, as I keep telling you and you resolutely
>> keep utterly ignoring, have moved on since then.
> I've given up on trying to do this as whenever I ask a question on the
> bug report or add information none of the, what would you call them,
> those the bug is reported to, ever respond. The same goes for the bug
> report I've added information to at, no one seems to
> care and questions I have don't get answered. There has to be a reason
> for it as I'm not the only one having this issue as shown in the two bug
> reports but no help is forthcoming.
	Not worthy? Not part of the "in" crowd? Yeah, I've seen that too, in 
many places... Those that fix the bugs tend to respond only to their 
friends. The rest, at best, get the cold shoulder.
	And unfortunately, it happens here on this user support list as well.

--- Dave Woyciesjes
--- CompTIA A+ Certified IT Tech -
--- HDI Certified Support Center Analyst -
Registered Linux user number 464583

"Computers have lots of memory but no imagination."
"The problem with troubleshooting is that trouble shoots back."
- from some guy on the internet.

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