That's strange it didn't select the pae kernel. In that case install the linux-generic-pae package.
sudo aptitude install linux-generic-pae On Sat, Mar 20, 2010 at 10:50 PM, David Groos <[email protected]> wrote: > Thanks Ekul. I didn't really understand what you meant by the dpkg so > didn't go with that but did understand the sudo aptitude part :) So I did > this, it installed, I rebooted and checked: > > dgr...@gcos2:~$ uname -r > 2.6.28-18-server > > Which doesn't have the -pae in the name. Any ideas? > David > > > > On Sat, Mar 20, 2010 at 4:29 PM, ekul taylor <[email protected]>wrote: > >> It's actually really easy to install a kernel if you use the repositories. >> dpkg adds your kernel to the list of available kernels so if for any reason >> you have trouble you can simply use grub to boot into your old kernel. >> Among all package installations a new kernel is among the safest since >> reverting is as easy as hitting escape during grub and choosing the old >> kernel. >> >> I'm not sure what package mixture you have so I can't really deal with >> that but installing the PAE kernel is as simple as: >> sudo aptitude install linux-server >> This will install the kernel and any necessary headers. If you want to >> run the karmic kernel but nothing else from karmic you'll have to do some >> apt pinning. >> >> As for the reason you don't have the pae kernel I believe it is only >> selected by default when installing via the server cd. Any other method you >> have to add it via apt after install. >> >> On Sat, Mar 20, 2010 at 12:34 PM, David Groos <[email protected]> wrote: >> >>> I find I'm not using the server kernel which surprises me--isn't that >>> the one that the 'alternate CD' used? Shouldn't that be the standard >>> install for a thin client server using Edubuntu? >>> >>> So, how do I go about installing this kernel? I used the link that Alkis >>> provided and I could download the kernel. I couldn't access it via >>> Synaptic, probably because I've set sources to Jaunty but I wasn't sure how >>> to set some to Karmic. Any link/suggestion would be appreciated! I don't >>> want to willy-nilly upgrade a kernel, sounds like risky business. >>> >>> Thanks! >>> David >>> >>> On Mar 19, 2010, at 4:35 PM, ekul taylor wrote: >>> >>> Run >>> uname -r >>> which will tell you the specific build of the kernel you are running. If >>> the PAE kernel is in use it will have -pae in the name. if you don't see >>> that you'll need to install the linux-server package. >>> >>> You can also run free -m as a check to ensure all your ram is being >>> addressed. However much you think there is should match the total column in >>> MB. If it doesn't something isn't quite working. >>> >>> On Fri, Mar 19, 2010 at 5:07 PM, David Groos <[email protected]> wrote: >>> >>>> Thanks Ekul for the further info, I get it now. I think I'll use >>>> solution #1 below--sounds like it is doable and will help out with what I >>>> need for these last couple of months of school then over summer power-up >>>> with a new Lucid install. I'm pretty sure I'm currently using the server >>>> install. How can I tell? >>>> >>>> David >>>> >>>> >>>> On Fri, Mar 19, 2010 at 8:35 AM, ekul taylor <[email protected]>wrote: >>>> >>>>> The 32/64 bit question is very complicated. Hopefully I can help. >>>>> >>>>> Any AMD Opteron or Intel Xeon server made in the past few years has >>>>> support for running 32 bit and 64 bit code (even at the same time). So >>>>> you >>>>> could clone your existing server and it would work fine but you might not >>>>> be >>>>> able to take advantage of all of your RAM. >>>>> >>>>> If you have more then 4 GB of RAM you have 3 options to use it all: >>>>> >>>>> 1. Clone your 32 bit server install but install the linux-server >>>>> package if it isn't already used. This kernel is PAE enabled which is >>>>> something Intel developed to let 32 bit processors address more then 4 GB >>>>> of >>>>> RAM. It does have slight performance issues and no one process can >>>>> address >>>>> more then 4 GB of RAM but for a terminal server this isn't important. >>>>> >>>>> 2. Clone your 32 bit server but install and run a 64 bit kernel. This >>>>> can be tricky dependency-wise so I wouldn't recommend it so I won't >>>>> outline >>>>> the many steps here. >>>>> >>>>> 3. Install a 64 bit version of edubuntu and reuse >>>>> your configuration files from your old server. It's pretty easy to do >>>>> since >>>>> except for /etc/modules.d and /etc/modprobe.conf none of the config files >>>>> are about the kernel. You do have to build your chroot a little >>>>> differently >>>>> if you use this option as thin clients will almost certainly need a 32 bit >>>>> boot environment. To do this you use the command: >>>>> ltsp-build-client --arch i386 >>>>> instead of just ltsp-build-client. This is what I option I would use >>>>> when installing lucid but if you're just going to be using karmic for a >>>>> few >>>>> months option 1 will involve the least setup. >>>>> >>>>> >>>>> On Fri, Mar 19, 2010 at 9:11 AM, David Groos <[email protected]>wrote: >>>>> >>>>>> Confusion compounds... >>>>>> >>>>>> the one thing I might have understood... >>>>>> >>>>>>> >>>>>>> If you install this kernel in Jaunty/Karmic, then you can access more >>>>>>> than 4 Gb of RAM while having 32 bit systems/OS: >>>>>>> http://packages.ubuntu.com/karmic/linux-server >>>>>>> >>>>>>> So you can do that either in the old or the new server. >>>>>>> >>>>>> >>>>>> You're saying that: >>>>>> --I could install the above kernel onto my current 32 bit hardware. >>>>>> --then I could either: >>>>>> --------install up to 64 Gb RAM on old server >>>>>> or... >>>>>> --------then I could clone this new setup to the new server. >>>>>> ? >>>>>> >>>>>> Thanks, >>>>>> David >>>>>> >>>>>> >>>>>> -- >>>>>> edubuntu-users mailing list >>>>>> >>>>>> [email protected] >>>>>> Modify settings or unsubscribe at: >>>>>> https://lists.ubuntu.com/mailman/listinfo/edubuntu-users >>>>>> >>>>>> >>>>> >>>> >>> >>> >> >
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