I don't know that I can add enough information to solve this for everyone, but I suspect that I can help for some people. I have two Dell laptops that have been plagued in 12.04, and I've observed enough to know that there are probably multiple bugs at work here, and that is why it is difficult to solve.
One bug is predominantly X related. It causes spurious logouts and freezes that only affect X (i.e. you can still SSH in). I've done so many things that I can't even count what might have fixed it, but this hardly ever happens to me now. I followed lots of advice, but I suspect one of 3 things was the final solution on my Dell XPS 14 (Intel video, Intel wireless, i5-3317U CPU): installing the X swat updates "deb http://ppa.launchpad.net/ubuntu-x-swat/x-updates/ubuntu precise main", upgrading to a new kernel (currently 3.5.5), or switching to the 2D interface. My daughter has my old Dell Inspiron 15, and she is still experiencing lockups with her laptop. I am very confident that her lockups come from the built-in Intel wireless, particularly when the computer gets to the edge of a hot spot where the signal is spotty (dmesg shows problems briefly before the computer locks up and the weak wireless is almost a sure trigger). I think there has been a regression in the Intel wireless drivers because it was solid for years and then got crappy about a year ago. I decided to order a USB wireless ethernet adapter this week and just disable the internal wireless, and I expect that to solve her problems as well. I'm disappointed by this, because of course I specifically chose Intel wireless when I bought that machine years back for the reliable drivers. So, perhaps nothing here will close the bug, but maybe it'll help someone else. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/993187 Title: ubuntu 12.04 completely freezes frequently. Status in “linux” package in Ubuntu: Won't Fix Status in “xserver-xorg-video-intel” package in Ubuntu: Won't Fix Status in “linux” source package in Precise: Won't Fix Status in “xserver-xorg-video-intel” source package in Precise: Won't Fix Bug description: Update: 6/12/2012 This bug is about a complete system lock-up. No other TTYs can be started. Mouse doesn't move. Keyboard doesn't react. The only solution is hard reset. Seems to happen on a variety of configurations, including nVidia, ATI and Intel graphics. If you are still able to TTY or SSH into other sessions, move the mouse or use the keyboard, file another bug. Thx. Joris V. (brains). Update: 5/21/2012 Updating the kernel to 3.3.6 as suggested by Michael in #91, the system seems stable, no freezes yet in 5-6 hrs of using and watching videos for couple of hrs. Original description: I recently installed newly released ubuntu 12.04 LTS 64 bit version on my desktop. And it is frequently freezing, for the first few hours it ran smoothly and when I started watching videos it started freezing randomly. I have to use hard restart every time. Initially it was only during videos but now even during normal browsing it is freezing. I am using on board graphics and do not have any graphics card installed. Can someone please help me here, I really love the new looks of 12.04 and it bugs me not being able to use :( Below is my hardware configuration: Processor: Intel CORE i3 processor (2nd generation) Board: Intel® Desktop Board DH67BL Ram: 4GB Graphics: On board HDD: 500 GB Please let me know if you need more information, or any specific logs I can capture (and how). Thanks, Ketan Patil To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/993187/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
