I have an issue with this laptop, I have randomly freezes (2-3/week) since I bought it (begin of April) and even after doing the update or trying the kernel 3.5.0 .
When freezing, the system totally freeze, no possibility to access to others tty or to do anything else than pushing the power button.
There is already a bug opened on launchpad https://bugs.launchpad.net/dell-sputnik/+bug/1167624, but that could be also a hardware problem.
Any idea how to solve it ?
I have exactly the same issue, XPS developer delivered in August freezes completly on avg twice a week sometimes under load sometimes not. Can happen after 5 mins or 5 days uptime, completely random.
Applications I use most:
Firefox, Eclipse, Terminator, Skype, VirtualBox. It's done it with some or all running.
I have a 2nd monitor, a USB 2 ethernet adapter and a USB 2 hub attached most of the time.
Linux Dell-System-XPS-L322X 3.2.0-54-generic #82-Ubuntu SMP Tue Sep 10 20:08:42 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
I had the same problem with the pre-installed 12.04 on my XPS13. I reinstalled it from the rescue partition, and it still froze every few days, sometimes straight after boot, sometimes after running all day, sometimes under load, sometimes while idle. In other words, totally random freezes every other day unrelated to system state or activity.
I finally stumbled across http://www.howtoeverything.net/linux/hardware/random-freezes-integrated-hd-4000-graphics, which indicated there might be an issue. I tried the Enablement Stack fix, but that completely wrecked my system. I reinstalled again from the rescue partition, then upgraded to 12.10 (after telling Ubuntu it was ok to do non-LTS upgrades), and then 13.04. I've now been running all day, 4 days a week for several months, without a single freeze. This includes compilations of massive projects while running Windows 7 in a virtual machine while running on an external monitor at 2560x1440, so the system is well and truly stressed.
In short: try upgrading to 13.04.