mainline kernel and preferred kernel

[Israel]

On 04/22/2014 07:17 AM, farinet at arcor.de wrote:
> Am 22.04.2014 12:47, schrieb lubuntu-users-request at lists.ubuntu.com:
>> Am Dienstag, 22. April 2014, 11:15:00 schrieb farinet at arcor.de:
>>>> Since i found somewhere - to resolve my a2dp problem - the suggestion to
>>>> try with the 3.15 mainline kernel, i installed this. The kernel works
>>>> fine so far, but that specific problem, for me at least, isn't solved by
>>>> it. Now, in the grub menu, the mainline kernel is the topmost (i do not
>>>> like to remove it, since together with the 3.13 kernel it's the only one
>>>> i have and i prefer to have at least 2, to have an alternative in case
>>>> of problems) but i would like to start by default in the default kernel.
>>>>
>>>> How is this done (by modifying grub, i presume??), if it can be done?
>> You can change the default boot entry in /etc/default/grub at the option 
>> GRUB_DEFAULT=X (where X is the number of the default boot entry starting with 
>> 0 for the first one) 
>>
>> You could also set 
>> GRUB_DEFAULT=saved
>> GRUB_SAVEDEFAULT=true
>>
>> so it remembers the last choice and sets it as default. 
> Great! The latter one- imho  - is the more elegant (like the login
> manager(s) treat the choice of DE!) one. Thanks a lot for the advice!
>
> Just an additional question out of curiousity: Would that, or the
> existance of a mainline kernel, in some way obstacle the - expectable -
> upgrades of the default (Ubuntu) kernel?
>
Hi,
You can specify the exact Kernel you want to boot in GRUB2 as well. 
Actually there are a lot of really cool features in GRUB2 (like theming).
https://help.ubuntu.com/community/Grub2/Submenus#Manually_Setting_a_Specific_Kernel_as_the_Default
will let you manually set the Specific Kernel (you basically copy the
menu entry from your grub screen) to GRUB_DEFAULT

and for some more info on GRUB (in case you are interested)
https://help.ubuntu.com/community/Grub2


-- 
Regards