Been trying to install ubuntu 10.04 for 3 days on different pc's, only one ran straight away from the live CD and this was an old 800Mhz Packard Bell that I've had for years and I only tried it on that because I got no joy with the other two but it does control my Denford Orac Lathe with no problems at all. The other two are,nt new ones a Compaq Presario 2.17Mhz with a ATI 9600 graphics card the other is a Philips Dual Core but both higher specs than the Packard.
On the Compaq when trying to boot from the live CD all I got at first was just screens full of text ending with something like Ubuntu@Ubuntu a bit like the old Dos prompt. Looked at the Bios and it was set to boot from CD. Tried a few more times same result. Then I downloaded the live CD for 10.04.1 and tried that, that booted ok. Put 10.04 back in and that booted ok as well!!!!!
So now I,m thinking I,ve got a problem with my CD rewriter (only had a rewriter on this machine). So tried 10.04 again and it would'nt load again. I had a spare CD Rom so I put that in and changed the boot set up to reflect this. Hey presto 10.04 booted first time. did'nt continue with install as it was getting late. Next day tried to boot from the CD in the Rom drive again gues what, just screens of text again, tried a couple more times same result. I had a E-Machines pc with a blown mother board, probably about 6 years old but I knew both CD drives in it were ok so put these drives in the Compaq and both drives booted 10.04 every time I tried, so we're winning, finished the install this time. Got everthing connected back to the mill, ran a latancey test. Blimey 345,700ish and that was without doing anything. As I had dual booted this with 8.04 EMC2 2.3.0 which was on there already and I had no problems with it I switched back to that and did a latancey test 6500 was the result. Gave up on 10.04 on that PC and left it with 8.04.
I then thought I,d try it on the Dual Core as this is the newest PC I have in my workshop (sorry shed) but it was'nt in use at all. However it did have a CD drive that I'd sometimes have to close 2 or 3 times before it would stay in, which really pissed me off hence its home under the bench, so I thought I'd try the the old rewriter out of the Compaq. No luck screens full of text again, so brought a new sata CD installed that but left the old rewriter in. 10.04 booted from the sata drive ok, out of curiosity I tried it in the old rewriter again and it booted ok this time I did'nt complete the install just yet but repeated trying to boot from the old drive to see if it would fail again and it did,nt so completed the install from the old rewriter. Have,nt done a latency test on the Dual core yet.
I now don't think theres anything wrong with my PC's but I do think there's something wrong with the EMC2 version of 10.04 which appears to make it very touchy about what PC,s and graphics cards it likes, so for me I'm going to leave it alone for now and stick with 8.04 and if the isues with 10.04 don,t get resloved switch to another controller if I have to, shame really because I like EMC2. I don,t use Linux apart from my cnc so I simply don't have the knowledge or time to solve these issues, and as yet have never had to think about or purchase a PC for previous versions of EMC2 its run OK on all machines I,ve put it on so far as they've just been my old PC's when I've upgraded.
Rod