Ubuntu 10.04 (Lucid Lynx) Random Freeze / Hang-up

[IIVQ]

Hi all. I had the freezes as well (see my earlier posts) but I don't have them anymore for 3 days (knock on wood)

There are 2 things I changed from my previous configuration:

1. I meddled a little trough the appearance and desktop settings - unfortunatly I don't know exactly what I did. How can I see whether I have compiz enabled (on kubuntu 10.04)? - I now hear from chat that kubuntu doesn't have compiz, but anyway, I have "System settings -> desktop effects -> desktop effects -> enable desktop effects" set to Disabled
2. I got myself an xorg.conf, so I didn't need to set the display settings as they reset every time. This solved the "set display settings each time after reboot" problem and introduced a host of other, but lesser problems for me. However, I want to present you my xorg.conf:
   http://pastebin.com/HMCyWTtY

As it was, I noticed a bunch of pixilazation on my screen just before it happened. Here's a photo I took with my blackberry...





I highlighted the pixilazation in red.

My programmer brain is wondering why this isn't seemingly more obvious. You just look at what in X changed between 9.1 and 10.04.

I did notice the same kind of pixelation (even when the system was still live), though not in scroll bars but in the icons in the "task bar" (both of active windows and of the system notification area - mostly the kbluetooth icon which I've since disabled - this box had no bluetooth - oh and I did get freezes after disabling kbluetooth). It's over now, but I don't know since when.

Knock on wood,

Tijmen Stam

[goforthepod]

I BELIEVE it has to do with the kernel, since my 9.10 ubuntu had the same issue after I upgraded the kernel to 2.6.32. I did the upgrade to use the wireless driver.

That I didn't experience freezes in 2.6.31 might be random, but it is worth noting.

[wojnicki]

I've got Compaq Presario r3065us, P4 mobile, ATI 9200. I haven't installed Lucid yet, because of the issue discussed here, I also experience while booting the live cd (from a USB stick).

The funny thing is that if I boot the system in the single mode ('init S' kernel option), drop to the root shell and start XOrg by calling startx, there are no hung ups.

If I boot the system in multi mode - it hangs in approx. 1 minute.

So, I'd guess that it's not the XOrgs fault, but the kernel. I wonder if anyone can try the karmic kernel, and see if it works or not.

I also wonder how is StuartN's solution - to use the mainline kernel - is it confirmed to work?