monitor say's no signal when I boot into 9.04 (dual boot with xp)

Might be a problem with your configuration. Witch graphic card do you have?
In witch resolution are you trying to boot? Are you sure that resolution is handled by your graphic card?

If you have an ati graphics card from series 1000 then please revert to Ubuntu 8.10 or 8.04. In 9.04 the new Xserver 1.6 doesn't support the excellent series 1000 ati card but Ubuntu 8.10 and 8.04 still have at least one more year's support and used Xserver 1.5 which does support the last good ati card prior to the 4000 series which is still ultra-new and expensive (although a great bargain and well worth the money, assuming it is already supported in linux). Ati series 2000 and 3000 are still supported in Jaunty (Ubuntu 9.04) but werent as good as the series 1000 so it's unlikely you have one.

I managed to get my 1000 series card working in Jaunty by uninstalling the proprietary driver but then i tried the OpenSource driver which broke my system again, luckily i was able to uninstall this too and now my monitor works although not quite as well as it did under 8.10 or 8.04. Uninstall the drivers is easiest from the command-line and the easiest way to get a useful one is through the bootup menu that offers lots of options for booting into Ubuntu, the second option has "Recovery mode" near the end of it's line and that gives you an option to "fix xserver" (worth trying first, then "resume normal boot") if that hasn't helped then use recovery mode again to "drop to a root shell", or something like that, but let us know if the "fix xserver" didn't work first.

Good luck and regards from
Tom :)

PS if you do want to revert to 8.10 or 8.04 i could describe a neat trick

thank you tom and mikechaos, In the end I had to delete the partition with ununtu on it. and revert back to 8.10 all is working fine. I did at one point have 9.04 on my system,however I had it on a separate drive and not as a dual boot. my graphics card is GeForce 9800 GT PCI-E 16x 512 MB 650 MHz my resolution is set at 1920x1080 I would like to upgrade my system to the newest version through the update manager, but I'm afraid the I will run into the same problem as i did before. if someone can let me know if my graphics card is compatible with the newest version and that my resolution is set properly I would appreciate it very much thanks.

giggy

yes tom please show me how to revert to an older version I always like to learn new tricks!
thanks giggy

I stumbled on this fairly quickly and can't believe other people are so wary of it. Various warnign are worth reading carefully and then check the summary at the end and hopefully you should see that all will be well. Of course still back-up just in case ;)

To reinstall one version of Ubuntu over a pre-existing one try using the "Manual Partitioning" from the section about halfway through the question. It looks a little scary for a moment but after it's scanned your drives it should show how you have already laid out the partitions and let you resize and add/delete partitions. To keep using your existing partitions just edit your main ubuntu partion to set it's "Mount Point" to "/" as the / mark shows the installer where to put the bulk of the Ubuntu operating system. You might also have a separate /home worth setting here. The crucial thing is to make sure none of the partitions get formatted or else what was previously on those drives will get wiped. Simply make sure that all partitions are UNticked in the "Format Partition?" column.

Good luck and regards from
Tom :)

thank you tom for this info and i will try this in the future sounds very interesting,could you tell me if my graphics card is good for 9.04 and if my resolution is set properly I do want to upgrade to 9.04 but I'am afraid to run into the same problem as before thanks

giggy

I don't know. Geforce is nVidia? There's nothing in the release-notes that i can see
http://www.ubuntu.com/getubuntu/releasenotes/904

Try the LiveCd session from the 9.04 Cd and see if you can get that to work? Alternatively perhaps partition off 15Gb at the end of your drive and try installing 9.04 to that. See if you can get that to work and then use the same trick on your main Ubuntu. This would also install another grub-boot-loader but you could reinstall the one on your main Ubuntu by using a terminal console and typing in

sudo grub

find /boot/grub/stage1

and take the first answer it gives there to continue with

root (hd0,1)

setup (hd0)

quit

This even work from a LiveCd session even from another distro so it's not really tough to fix :)

Good luck and regards from
Tom :)

The "no signal" is quite unusual for a software problem. It normally suggests that the monitor lead has somehow wobbled free, which suggests that you're using a desktop machine rather than a laptop

Good luck and regards from
Tom :)