Cannot install Ubuntu 8.04 x86_64 on Dell R710 error cannot find valid memory mapPANIC

try it with just 3 gigs of ram

I'm sorry for that reply
pretty lame

if you are not gona use special apps for 64 stick to I386
but i have 1.5ghz via c7-m 1 gig of ram

I think some one else has a better solution. sorry

Thank you very much I will try with 3GB. or 4 GB. of ram, As application I run on Dell R710 is Zimbra Mail server
64Bits.
Still waiting some one help me to fix this problem.

Try with 4GB. RAM No luck same error, Any one have success install Ubuntu 8.04 64 bits. on Dell R710 please
help me to fix this problem.

Did you MD5 check the ISO you downloaded?
Did you verify the CD once bootedto it?
Did you burn as slowly as you were allowed?
Have you used the memory tester (also on the cd) to test your ram is healthy?

actionparsnip: Thank you very much for you sucgestion but I do all think as below and error is same as before.

Did you MD5 check the ISO you downloaded? <== YES. is correct MD5
Did you verify the CD once bootedto it? <== Can not verity when I enter menu Check CD. is go to same error.
Did you burn as slowly as you were allowed? <== I write iso file with other computer to new cd but same error
Have you used the memory tester (also on the cd) to test your ram is healthy? <== I use memory test with Fedora Core10 DVD. it pass successfully no error when test memory.

Please help me what next step I will do to solve this problem.

Are you doing a clean install? In other words, did you wipe your HDD before you started? If you are upgrading from a previous version, sometimes file names change. If you have an older version on your HDD, your CD may be looking for a file who's name has been changed. Just a thought. Good luck.

Try disabling unnecesary hardware while you install (LAN, sound etc) also try some boot options to disable aacpi, apic and dma

https://help.ubuntu.com/community/BootOptions

I can confirm with the same hardware set and 8.04.2 x86_64 CD (alternate or server): won't install, even if using noacpi noapic nolapic irqpoll... just won't boot and end with "cannot find valid memory mapPANIC".

booting with x86 install CD is fine :(

Try a reburn s slowly as possible (4x if you can) or try a different brand of disks (I've had folks saying their systems installed ok with one brand but not another)

Olivier YES same my problem, any one have success to install Ubuntu 8.04.2 x86_64 on DELL R710 please post your step.

I try 4 time with different cd brand also download new iso file from other ISP. but no luck. how I can solve this :(

Wow, very weird. You could use what I call Win98 style:

create a partition on your drive some place ~1Gb will do nicely. Put the ISO on a usb stick and boot to a terminal of some sort (anything will do, even gentoo minimal), anyhoo. You can now copy the ISO to your harddrive and configure LILO (Grub doesnt support booting from ISO) to boot the file. and install from harddive to harddrive (much like people did installing Win98 so that the CD was never needed)

Bit of a long chore but its a good way to get an install as it removes the complication of disks.

Have you also used the memory checker to make sure your ram is healthy? You could boot to single user command line and fsck your drive too.

Sounds very promising. Jason can you log this as a bug with this fix please :)

https://answers.launchpad.net/ubuntu/+question/72629

opps, wrong url, disregard previous post. https://bugs.launchpad.net/ubuntu/+bug/386086

YESSSSSSS,,,, Thank you very much Jason your answer is Solve my problem.

Thanks Jason Carr, that solved my question.

Sweet. Looks like Dell need a call to let them know