I have a Lenovo Thinkpad X230 with 12.10 on and I'm finding programs either becoming unresponsive or refusing to start up. A look at system monitor or ps aux shows the process is in uninterruptible I/O and cannot be killed. This has happened with Firefox and Steam so far. I don't think this is an Ubuntu-specific bug as I have had this happen with an old laptop running OpenSUSE however I thought I'd post here anyway as Ubuntu is what I am running now.
Some points of interest:
- The laptop is using LUKS/dm-crypt encrption. The entire root partition is encrypted save for /boot.
- Root (/) is using btrfs with compression
- I am using an SSD (Samsung 840)
My old laptop had a similar setup and this sort of thing happened every week or so. I suspect one of these three may be to blame but I wouldn't know where to start with investigations. Interestingly on my old laptop Firefox was the only program susceptible but now it looks like everything is fair game to this bug.
This isn't a show-stopping bug but is serious as (as far as I know) any process could freeze up and become uninterruptible, taking any unsaved work with it. I have to restart the laptop to free up the process and be able to use whatever was blocked.
Linux 3.5.0-24-generic x86_64