Ubuntu 12.04 boot cd, fails to boot

Which release did you download, the 32 bit (recommended) one or the 64 bit release?

For the desktop, try the nomodset boot option

*When booting off the livecd press the space bar when you see the tiny 'human' logo down the bottom.
*When you get the alternate menu select boot options (F6) and select nomodeset.
*Continue with the LiveCD boot.

Chris

Hi Chris,

Thanks for your reply.

It would have been the 32 bit release.

I will try the Desktop option that you have suggested.

The older versions of Ubuntu booted without any intervention, what makes version 12.04 different?

Any idea what I can do about my Laptop?

Cheers Arthur.

-------- Original message --------
Subject: Re: [Question #197033]: Ubuntu 12.04 boot cd, fails to boot
From: Chris <email address hidden>
To: <email address hidden>
CC:

Your question #197033 on Ubuntu changed:
https://answers.launchpad.net/ubuntu/+question/197033

    Status: Open => Answered

Chris proposed the following answer:
Which release did you download, the 32 bit (recommended) one or the 64
bit release?

For the desktop, try the nomodset boot option

*When booting off the livecd press the space bar when you see the tiny 'human' logo down the bottom.
*When you get the alternate menu select boot options (F6) and select nomodeset.
*Continue with the LiveCD boot.

Chris

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This is common in older systems, you will need to install either Xubuntu or Lubuntu where the default kernel does not have PAE by default, then install ubuntu-desktop if you so wish (or just stay on what you have).

Where would I find "Xubuntu" or "Lubuntu" & are they also Version 12.04?

-------- Original message --------
Subject: Re: [Question #197033]: Ubuntu 12.04 boot cd, fails to boot
From: actionparsnip <email address hidden>
To: <email address hidden>
CC:

Your question #197033 on Ubuntu changed:
https://answers.launchpad.net/ubuntu/+question/197033

    Status: Open => Answered

actionparsnip proposed the following answer:
This is common in older systems, you will need to install either Xubuntu
or Lubuntu where the default kernel does not have PAE by default, then
install ubuntu-desktop if you so wish (or just stay on what you have).

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Hi, the graphics requirements for 12.04 are much higher than they were for 10.04 and 10.10. It's putting a lot more strain on existing drivers, and even requiring 3rd party drivers to boot. The nomodeset option should at least get the LiveCD to boot into a low res mode that will get you started. You may have to load the approapriate driver through command line after you've done the installation.

I haven't see the pae message that you are seeing, but apparently Andrew is familiar with it. You might try some of the other boot options like acpi=off and noloapic to see if it makes any difference. If it is an older Laptop you may indeed find Lubuntu runs better on your laptop.

Chris.

http://cdimage.ubuntu.com/xubuntu/releases/12.04/release/xubuntu-12.04-desktop-i386.iso
MD5: 52fddd81e75bb421a5435a42ca9ec6df

Yes, all the official releases (kubuntu, Xubuntu, Lubuntu and Ubuntu) are all available in Precise.

Hi Chris, yes it is an older Laptop, where would I find "Lubuntu" & would it also be Version 12.04?

Where would I set some of the other boot options like
"acpi=off and noloapic" as you mentioned?

Cheers Arthur.

-------- Original message --------
Subject: Re: [Question #197033]: Ubuntu 12.04 boot cd, fails to boot
From: Chris <email address hidden>
To: <email address hidden>
CC:

IYour question #197033 on Ubuntu changed:
https://answers.launchpad.net/ubuntu/+question/197033

    Status: Open => Answered

Chris proposed the following answer:
Hi, the graphics requirements for 12.04 are much higher than they were
for 10.04 and 10.10. It's putting a lot more strain on existing drivers,
and even requiring 3rd party drivers to boot.  The nomodeset option
should at least get the LiveCD to boot into a low res mode that will get
you started.  You may have to load the approapriate driver through
command line after you've done the installation.

I haven't see the pae message that you are seeing, but apparently Andrew
is familiar with it.  You might try some of the other boot options like
acpi=off and noloapic to see if it makes any difference.  If it is an
older Laptop you may indeed find Lubuntu runs better on your laptop.

Chris.

--
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You received this question notification because you asked the question.

Hi Chris, For the desktop option that you suggested, it has now booted up!!!

What did those settings actually do to allow my PC to boot?

Thanks so much for all of your help, now just the Laptop to sort out.

Cheers Arthur.

-------- Original message --------
Subject: Re: [Question #197033]: Ubuntu 12.04 boot cd, fails to boot
From: Chris <email address hidden>
To: <email address hidden>
CC:

Your question #197033 on Ubuntu changed:
https://answers.launchpad.net/ubuntu/+question/197033

    Status: Open => Answered

Chris proposed the following answer:
Which release did you download, the 32 bit (recommended) one or the 64
bit release?

For the desktop, try the nomodset boot option

*When booting off the livecd press the space bar when you see the tiny 'human' logo down the bottom.
*When you get the alternate menu select boot options (F6) and select nomodeset.
*Continue with the LiveCD boot.

Chris

--
If this answers your question, please go to the following page to let us
know that it is solved:
https://answers.launchpad.net/ubuntu/+question/197033/+confirm?answer_id=0

If you still need help, you can reply to this email or go to the
following page to enter your feedback:
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You received this question notification because you asked the question.

You can set all the boot options from the same place - just follow the instructions above for setting nomeset.

You would want to download lubuntu-12.04-desktop-i386.iso from here:
http://cdimage.ubuntu.com/lubuntu/releases/12.04/release/

or if you want a neat link:
http://cdimage.ubuntu.com/lubuntu/releases/12.04/release/lubuntu-12.04-desktop-i386.iso

You could also use the torrent from the same source:
http://cdimage.ubuntu.com/lubuntu/releases/12.04/release/lubuntu-12.04-desktop-i386.iso.torrent

Don't forget to check the md5sum for the downloaded iso:
http://cdimage.ubuntu.com/lubuntu/releases/12.04/release/MD5SUMS

Chris

Sorry I don't understand your answer?

Cheers Arthur.

-------- Original message --------
Subject: Re: [Question #197033]: Ubuntu 12.04 boot cd, fails to boot
From: "marcobra (Marco Braida)" <email address hidden>
To: <email address hidden>
CC:

Your question #197033 on ubiquity in Ubuntu changed:
https://answers.launchpad.net/ubuntu/+source/ubiquity/+question/197033

    Project: Ubuntu => ubiquity in Ubuntu

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You received this question notification because you asked the question.

Try the CD as is, you may not need the boot options

As I originally said my Laptop could not boot with Ubuntu 12.04 CD & I have also tried all the other Boot options (by F6) with it still not being able to boot from the CD.

Cheers Arthur.

-------- Original message --------
Subject: Re: [Question #197033]: Ubuntu 12.04 boot cd, fails to boot
From: actionparsnip <email address hidden>
To: <email address hidden>
CC:

null

Hi Chris, I have been able to try all of the other Boot options by (F6) on my Laptop but none of them will boot my Laptop.

I will try lubuntu as you suggested, how does it differ from Ubuntu?

Cheers Arthur.

-------- Original message --------
Subject: Re: [Question #197033]: Ubuntu 12.04 boot cd, fails to boot
From: Chris <email address hidden>
To: <email address hidden>
CC:

Your question #197033 on Ubuntu changed:
https://answers.launchpad.net/ubuntu/+question/197033

    Status: Open => Answered

Chris proposed the following answer:
You can set all the boot options from the same place - just follow the
instructions above for setting nomeset.

You would want to download  lubuntu-12.04-desktop-i386.iso  from here:
http://cdimage.ubuntu.com/lubuntu/releases/12.04/release/

or if you want a neat link:
http://cdimage.ubuntu.com/lubuntu/releases/12.04/release/lubuntu-12.04-desktop-i386.iso

You could also use the torrent from the same source:
http://cdimage.ubuntu.com/lubuntu/releases/12.04/release/lubuntu-12.04-desktop-i386.iso.torrent

Don't forget to check the md5sum for the downloaded iso:
http://cdimage.ubuntu.com/lubuntu/releases/12.04/release/MD5SUMS

Chris

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Hi Arthur,

Basically Lubuntu ships with the Lxde desktop instead of Unity so it requires much less graphics capability than Ubuntu. It also installs a much lighter suite of applications. There must also be a difference in the kernel that I wasn't aware of. I've noticed that since the beta of Ubuntu 12.04 it's been using the pae version of the kernel (memory support above 2GB) but I wasn't aware that it might cause problems on older machines. I love Lubuntu for it's extra light footprint on less capable machines.

As Andrew suggested you might be able to install Lubuntu and then install Unity:
sudo apt-get install ubuntu-desktop

Chris

Hi Chris,

I have run lubuntu 12.04 on my CDRW, runs ok but looks very basic.

So if I type "sudo apt-get install ubuntu-desktop" will it be as Ubuntu 12.04 with all the Software that the CD install would provide?

Cheers Arthur.

-------- Original message --------
Subject: Re: [Question #197033]: Ubuntu 12.04 boot cd, fails to boot
From: Chris <email address hidden>
To: <email address hidden>
CC:

Your question #197033 on ubiquity in Ubuntu changed:
https://answers.launchpad.net/ubuntu/+source/ubiquity/+question/197033

    Status: Open => Answered

Chris proposed the following answer:
Hi Arthur,

Basically  Lubuntu ships with the Lxde desktop instead of Unity so it
requires much less graphics  capability than Ubuntu. It also installs a
much lighter suite of applications.  There must also be a difference in
the kernel that I wasn't aware of.  I've noticed that since the beta of
Ubuntu 12.04 it's been using the pae version of the kernel (memory
support above 2GB) but I wasn't aware that it might cause problems on
older machines.  I love Lubuntu for it's extra light footprint on less
capable machines.

As Andrew suggested you might be able to install Lubuntu and then install Unity:
sudo apt-get install ubuntu-desktop

Chris

--
If this answers your question, please go to the following page to let us
know that it is solved:
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If you still need help, you can reply to this email or go to the
following page to enter your feedback:
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You received this question notification because you asked the question.

Hi Chris,

Just to let you know, I have run xubuntu on my CDRW & runs ok, looks a bit better than lubuntu function wise.

Still prefer Ubuntu, seems silly that Ubuntu 12.04 won't boot on my Laptop.

Cheers Arthur.

-------- Original message --------
Subject: Re: [Question #197033]: Ubuntu 12.04 boot cd, fails to boot
From: Chris <email address hidden>
To: <email address hidden>
CC:

Your question #197033 on ubiquity in Ubuntu changed:
https://answers.launchpad.net/ubuntu/+source/ubiquity/+question/197033

    Status: Open => Answered

Chris proposed the following answer:
Hi Arthur,

Basically  Lubuntu ships with the Lxde desktop instead of Unity so it
requires much less graphics  capability than Ubuntu. It also installs a
much lighter suite of applications.  There must also be a difference in
the kernel that I wasn't aware of.  I've noticed that since the beta of
Ubuntu 12.04 it's been using the pae version of the kernel (memory
support above 2GB) but I wasn't aware that it might cause problems on
older machines.  I love Lubuntu for it's extra light footprint on less
capable machines.

As Andrew suggested you might be able to install Lubuntu and then install Unity:
sudo apt-get install ubuntu-desktop

Chris

--
If this answers your question, please go to the following page to let us
know that it is solved:
https://answers.launchpad.net/ubuntu/+source/ubiquity/+question/197033/+confirm?answer_id=13

If you still need help, you can reply to this email or go to the
following page to enter your feedback:
https://answers.launchpad.net/ubuntu/+source/ubiquity/+question/197033

You received this question notification because you asked the question.

It's your CPU that is the issue. The situation is completely sensible.

Most systems now have more than 4Gb RAM from retailers (RAM is insanely cheap). 32bit OS will run on 64bit CPU and the target audience of Ubuntu is the average guy (not computer savvy). As 32bit will run on 64bit CPU the 32bit is 'recommended' for a guaranteed success. Due to the RAM scenario I stated earlier, the default kernel in Ubuntu is PAE enabled to accommodate up to 64Gb RAM in 32bit.

Unfortunately, not all CPUs support PAE and so this issue occurs. Xubuntu and Lubuntu are made for older systems which will probably not have PAE functionality in their CPUs, so the PAE is not default. This is what you need.

As you said "the default kernel in Ubuntu is PAE enabled" does that mean that it has only been implemented in Ubuntu 12.04?

My Laptop boots up fine on Ubuntu 11.10 boot cd & was also upgraded to 11.10, with no apparent problems.

As 12.04 is not compatible with my CPU, is there a Ubuntu alternative better than lubuntu & xubuntu?

Cheers Arthur.

-------- Original message --------
Subject: Re: [Question #197033]: Ubuntu 12.04 boot cd, fails to boot
From: actionparsnip <email address hidden>
To: <email address hidden>
CC:

Your question #197033 on ubiquity in Ubuntu changed:
https://answers.launchpad.net/ubuntu/+source/ubiquity/+question/197033

    Status: Open => Answered

actionparsnip proposed the following answer:
It's your CPU that is the issue. The situation is completely sensible.

Most systems now have more than 4Gb RAM from retailers (RAM is insanely
cheap). 32bit OS will run on 64bit CPU and the target audience of Ubuntu
is the average guy (not computer savvy). As 32bit will run on 64bit CPU
the 32bit is 'recommended' for a guaranteed success. Due to the RAM
scenario I stated earlier, the default kernel in Ubuntu is PAE enabled
to accommodate up to 64Gb RAM in 32bit.

Unfortunately, not all CPUs support PAE and so this issue occurs.
Xubuntu and Lubuntu are made for older systems which will probably not
have PAE functionality in their CPUs, so the PAE is not default. This is
what you need.

--
If this answers your question, please go to the following page to let us
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If you still need help, you can reply to this email or go to the
following page to enter your feedback:
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You received this question notification because you asked the question.

Yes it's new in Precise.

Thanks for your reply but you may have forgotten to answer......"As 12.04 is not compatible with my CPU, is there a Ubuntu alternative better than lubuntu & xubuntu?"

Cheers Arthur.

-------- Original message --------
Subject: Re: [Question #197033]: Ubuntu 12.04 boot cd, fails to boot
From: actionparsnip <email address hidden>
To: <email address hidden>
CC:

Your question #197033 on ubiquity in Ubuntu changed:
https://answers.launchpad.net/ubuntu/+source/ubiquity/+question/197033

    Status: Open => Answered

actionparsnip proposed the following answer:
Yes it's new in Precise.

--
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You received this question notification because you asked the question.

I don't know what kernel edubuntu uses?

Hi Barry,

Hope I have the correct link? as the ISO File is 2.6 GB.

Cheers Arthur.

-------- Original message --------
Subject: Re: [Question #197033]: Ubuntu 12.04 boot cd, fails to boot
From: Barry Drake <email address hidden>
To: <email address hidden>
CC:

Your question #197033 on ubiquity in Ubuntu changed:
https://answers.launchpad.net/ubuntu/+source/ubiquity/+question/197033

Barry Drake posted a new comment:
I don't know what kernel edubuntu uses?

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You received this question notification because you asked the question.

Edubuntu is BIG.

Hi Barry,

Edubuntu boot DVD got as far as the menu then the error message about pae appeared again.

It was worth the try, thanks for your help.

Cheers Arthur.

-------- Original message --------
Subject: Re: [Question #197033]: Ubuntu 12.04 boot cd, fails to boot
From: Barry Drake <email address hidden>
To: <email address hidden>
CC:

Your question #197033 on ubiquity in Ubuntu changed:
https://answers.launchpad.net/ubuntu/+source/ubiquity/+question/197033

Barry Drake posted a new comment:
Edubuntu is BIG.

--
You received this question notification because you asked the question.

"I have run lubuntu 12.04 on my CDRW, runs ok but looks very basic."

Yes, it is indeed a much simpler and more basic system. If you're going to be trying to add Unity to the system and build up from there, it's probably not a bad choice however.

"So if I type "sudo apt-get install ubuntu-desktop" will it be as Ubuntu 12.04 with all the Software that the CD install would provide?"

No, that will install Unity only - you will have to also install all the applications like LibreOffice and Firefox as and when you want to use them. Don't be surprised if a little more configuration is required, since the way Ubuntu ships is with all the apps integrated and set up already. It's probably worth persevering however.

There's an article on the pae/ubuntu question here:
http://askubuntu.com/questions/122841/why-is-12-04-using-a-pae-dependent-kernel-by-default

The author makes a good point that a these older CPUs may run unity and it's attendent baggage rather poorly, and also makes a case for Lubuntu and Xubunt.

Another way to do it might be if the alternate (non graphical) install CD uses the -generic (non pae) kernel to boot, then you migth be able to install off the alternate CD and then chroot into the file system to downgrade the kernel to the -generic one. You'd have to be careful that subsequent updates didn't overwrite the generic kernel and render the OS unbootable again.

Chris.

Hi Chris,

Encase you didn't know I have also tried edubuntu but it also gives the same error message as Ubuntu 12.04 about pae.

It now seems the only 2 options for me is either lubuntu or xubuntu, unless you know of some other alternative to Ubuntu?

If not, which is the best to use as a base, lubuntu or xubuntu? xubuntu seems to have a bit more to it but it looks a bit dated (if that's the right description?)

Cheers Arthur.

-------- Original message --------
Subject: Re: [Question #197033]: Ubuntu 12.04 boot cd, fails to boot
From: Chris <email address hidden>
To: <email address hidden>
CC:

Your question #197033 on ubiquity in Ubuntu changed:
https://answers.launchpad.net/ubuntu/+source/ubiquity/+question/197033

    Status: Open => Answered

Chris proposed the following answer:
"I have run lubuntu 12.04 on my CDRW, runs ok but looks very basic."

Yes, it is indeed a much simpler and more basic system.  If you're going
to be trying to add Unity to the system and build up from there, it's
probably not a bad choice however.

"So if I type "sudo apt-get install ubuntu-desktop" will it be as Ubuntu
12.04 with all the Software that the CD install would provide?"

No, that will install Unity only - you will have to also install all the
applications like LibreOffice and Firefox as and when you want to use
them.  Don't be surprised if a little more configuration is required,
since the way Ubuntu ships is with all the apps integrated and set up
already.  It's probably worth persevering however.

There's an article on the pae/ubuntu question here:
http://askubuntu.com/questions/122841/why-is-12-04-using-a-pae-dependent-kernel-by-default

The author makes a good point that a these older CPUs may run unity and
it's attendent baggage rather poorly, and also makes a case for Lubuntu
and Xubunt.

Another way to do it might be if the alternate (non graphical) install
CD uses the -generic (non pae) kernel to boot, then you migth be able to
install off the alternate CD and then chroot into the file system to
downgrade the kernel to the -generic one.  You'd have to be careful that
subsequent updates didn't overwrite the generic kernel and render the OS
unbootable again.

Chris.

--
If this answers your question, please go to the following page to let us
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If you want a fully configured system that needs a minimum of work, then Xubuntu would be the first choice. You could use it as it is, or add the Unity desktop to it if you want to see how Unity runs on that machine.

Chris