Restore latest kernel

Karl Larsen k5di at zianet.com
Fri Oct 17 13:11:56 UTC 2008


Mark Haney wrote:
> Karl Larsen wrote:
>   
>> Mike Adolf wrote:
>>     
>>> Karl Larsen wrote:
>>>   
>>>       
>>>> Mike Adolf wrote:
>>>>   
>>>>     
>>>>         
>>>>> Mark Haney wrote:
>>>>>   
>>>>>     
>>>>>       
>>>>>           
>>>>>> Mike Adolf wrote:
>>>>>>   
>>>>>>     
>>>>>>       
>>>>>>         
>>>>>>             
>>>>>>> This morning I ran the latest Ubuntu update.  It installed a new kernel 
>>>>>>> 2.6.24.21.  I rebooted and all was well.  Then I installed my new pctv 
>>>>>>> 800i tuner card. To do so, according mythtv wiki, I first extracted 
>>>>>>> firmware from a windows file and placed it into 
>>>>>>> /lib/firmware/2.4.24.21-generic, I downloaded the latest v4l driver 
>>>>>>> tree, did a make and make install. This is supposed to overwrite kernel 
>>>>>>> drivers. When I tried to reboot modprob failed.  It also failed in 
>>>>>>> recovery mode.
>>>>>>>
>>>>>>> Can I some how remove the corrupt 2.4.24.21 kernel, so that auto update 
>>>>>>> reinstalls it? I an new booted into 2.4.24.19.
>>>>>>>
>>>>>>> Thanks,
>>>>>>> Mike
>>>>>>>
>>>>>>>     
>>>>>>>       
>>>>>>>         
>>>>>>>           
>>>>>>>               
>>>>>> Okay, why do you think the kernel is corrupt?  Can you not boot into 
>>>>>> that kernel at all? It sounds like you can.  Let's try to backtrack to 
>>>>>> what the problem is before we go about re-installing a kernel.  If 
>>>>>> there's a module that won't load (or is loading and bombing, we can 
>>>>>> remove the module listing so it doesn't get autoloaded.  That's quicker 
>>>>>> and easier.
>>>>>>
>>>>>> What are the errors you're seeing?
>>>>>>
>>>>>>
>>>>>>   
>>>>>>     
>>>>>>       
>>>>>>         
>>>>>>             
>>>>> I can not boot 2.4.24.21. If I boot it in recovery mode it gets to the 
>>>>> point of running modprobe and gives the error "abnormal exit" and hangs. 
>>>>> Recovery mode boot flies by so fast I can't really see what it is doing. 
>>>>> I can still boot into a previous kernel (.19)
>>>>>
>>>>> Mike
>>>>>
>>>>>   
>>>>>     
>>>>>       
>>>>>           
>>>>     Hi Mike I am using Hardy and decided to see what kernel I am using. 
>>>> I was surprised to see it was:
>>>>
>>>>
>>>> title        Ubuntu 8.04.1, kernel 2.6.24-21-generic
>>>> root        (hd0,5)
>>>> kernel        /boot/vmlinuz-2.6.24-21-generic 
>>>> root=UUID=8713c541-dffa-4fd2-b22
>>>> b-e600afacbab2 ro quiet splash
>>>> initrd        /boot/initrd.img-2.6.24-21-generic
>>>> quiet
>>>>
>>>>     So I have had this kernel for some time and everything seems to be 
>>>> working exactly like it did with the many earlier kernels. Your problem 
>>>> must be with some other cause.
>>>>
>>>> Karl
>>>>
>>>>
>>>>   
>>>>     
>>>>         
>>> Thanks, but you need to read my original post.
>>>
>>> Mike
>>>
>>>
>>>   
>>>       
>>     I am supporting your thought that your kernel may be corrupt. I 
>> suggest you get another copy.
>>
>> Karl
>>
>>
>>     
>
> Why?  What makes you think his kernel is corrupt?  I want to hear your 
> logic behind this.
>
> All a 'reinstallation' will do is to blow away any new modules built and 
> set them up back to what normally comes with Ubuntu.  This is NOT a 
> corrupt kernel, it's a bad module causing the problem.
>
> I suggest anyone wanting to (or needing to) build a kernel module get 
> more familiar with the process and the dangers/issues of building these 
> modules.  I see reinstalling a kernel as the 'Windows' way of fixing a 
> problem.  The problem is fixed, but you still have NO idea what the 
> problem was, nor how to prevent said problem in the future.
>
> My ENTIRE reasoning for not explaining how to re-install the kernel was 
> to help this person learn and understand a little more about what he was 
> trying to do, so that he would be better able to handle these things in 
> the future.  (You know, the whole 'teach a man to fish thing....')
>
> Instead, everyone gave him a howitzer to go squirrel hunting.  This is 
> teaching very bad habits, in my opinion, on how to handle problems like 
> these.
>
>
>
>   
    He has already re-installed the kernel and all his problems are solved.

Karl
 

-- 

	Karl F. Larsen, AKA K5DI
	Linux User
	#450462   http://counter.li.org.
   PGP 4208 4D6E 595F 22B9 FF1C  ECB6 4A3C 2C54 FE23 53A7





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