32 bit Ubuntu with 4GB+ of memory

[jamesisin]

I am trying option 2.1 (adding the server kernel). Here is my output:

Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Couldn't find package linux-restricted-modules-server

Is that normal or is something amiss?

(I am running 8.10.)

Answer? Anybody?

[SlonUA]

After installing and booting from server image

type
sudo apt-get install linux-restricted-modules-$(uname -r)

[aspenhawk]

I have a Toshiba P105 S9722 running Ubuntu 8.10 Intrepid. I have 4GB installed, however Ubuntu only sees the following. total mem is 3015--used 1037--free 1978--shared 0--buffers 33--cashed 445---/+ buffers/cashe--used 558--free 2456--Swap 0. I have tried a number of procedures listed on the forum to no avail. I have the latest bios updates and have read several articles that say the transition processors, such as the T7200 with the 945pm express chipset cannot map above 4gb of memory. Any other solutions out there???????

[sdennie]

I have a Toshiba P105 S9722 running Ubuntu 8.10 Intrepid. I have 4GB installed, however Ubuntu only sees the following. total mem is 3015--used 1037--free 1978--shared 0--buffers 33--cashed 445---/+ buffers/cashe--used 558--free 2456--Swap 0. I have tried a number of procedures listed on the forum to no avail. I have the latest bios updates and have read several articles that say the transition processors, such as the T7200 with the 945pm express chipset cannot map above 4gb of memory. Any other solutions out there???????

My last laptop was a P105 series. Apart from various other problems, it wouldn't even boot with more than 2G of RAM and with more than 2GB the BIOS would only report 3GB. I would check your BIOS and, if it's only reporting 3GB, then what you are seeing is normal.

[Cracauer]

I have a Toshiba P105 S9722 running Ubuntu 8.10 Intrepid. I have 4GB installed, however Ubuntu only sees the following. total mem is 3015--used 1037--free 1978--shared 0--buffers 33--cashed 445---/+ buffers/cashe--used 558--free 2456--Swap 0. I have tried a number of procedures listed on the forum to no avail. I have the latest bios updates and have read several articles that say the transition processors, such as the T7200 with the 945pm express chipset cannot map above 4gb of memory. Any other solutions out there???????

The cheap Intel chipsets like the 945 don't support the required remapping, sorry.

[jaygo]

Thanks for the walkthrough. I deactivated the restricted nvidia driver from the hardware driver GUI before adding the server kernels, then reactivated it after a reboot. All is peachy now with 6GB RAM + nvidia driver. I didn't try installing the restricted modules you list.

+1 for releasing a PAE-enabled desktop (generic) Ubuntu kernel. Like he said, hit up the site and vote for it so we don't have to do so much legwork. Took me about two hours total, including 30 min to tweak LILO to boot from a new kernel, 45 min to reconfigure xorg.conf, all of which can be avoided once they release a PAE kernel.

[diaa]

PAE is really not that much slower.

Yes, (useless) artificial memory bandwidth tests suffer a little, but for real-world applications there is just a random +- 1%:

http://www.cons.org/cracauer/crabench/pae.user.html

Pretty useful, thanks.

For me, I give up the 2-3% for the extra 1G of memory(or more), I was suspicious about the performance of the kernel server in a Desktop environment because of its tuning not because of PAE's performance hit, does it work well with games, downloads, movies, everything.
I couldn't find a definitive answer so I installed the server kernel to find out, all I'm going to lose is a couple of hours and it's doing well up till now, I will follow up with updates if any.

[sdennie]

Pretty useful, thanks.

For me, I give up the 2-3% for the extra 1G of memory(or more), I was suspicious about the performance of the kernel server in a Desktop environment because of its tuning not because of PAE's performance hit, does it work well with games, downloads, movies, everything.
I couldn't find a definitive answer so I installed the server kernel to find out, all I'm going to lose is a couple of hours and it's doing well up till now, I will follow up with updates if any.

The only difference you are really likely to notice is in games. Where you may or may not see a performance hit. Most people probably won't notice the difference between the -server and -generic kernel.

[jamesisin]

After installing and booting from server image

type
sudo apt-get install linux-restricted-modules-$(uname -r)

I'm afraid that the error message I received above in some way prevented me from downloading/installing the server kernel.

[OnsoSan]

Using the option 2.1, with minor modification added the kernel version linux-restricted-modules-2.6.27-9-server everything works fine for me, including compiz
mem: 6076 MiB

Thank you