Since the root of the DNS tree has been signed, how do I change my caching DNS server to start validating DNSSEC signatures?
After enabling my Compose key, I want to find the list of all the key combinations I can use to create special characters. Where is the full list that my system is using when parsing the keys typed after the Compose key?
I know about things like ë(e"), °(oo), and ‽(!?), but there are surely many more. Everything I've found online seems out of date or incomplete. I would expect the full list to be locale-specific too.
I have a project in Launchpad with a bzr tree. I want all merge requests against that tree to have notifications set to my developer mailing list. How can I accomplish this?
In an effort to clean up from a software bug in md, I marked half of a RAID (/dev/sda1 and /dev/sdb1 in RAID1) as faulty using:
mdadm /dev/md2 --fail /dev/sdb1
mdadm /dev/md2 --remove /dev/sdb1
But now I want to use the "failed" half instead. i.e. instead of using /dev/sda1, I want to use /dev/sdb1, but mdadm refuses to bring it online:
mdadm --stop /dev/md2
mdadm -A /dev/md2 /dev/sdb1 --run --force
This fails, as it considers /dev/sdb1 a "spare" and not an actual member of the array any more.
I'd like to use the Cell processors in a PS3. Given the changes to PS3 firmware recently, what is the best way to get Ubuntu installed on a PS3?
I would like to examine the network traffic being handled by a single process, but simple network captures won't work since I am dealing with such a busy system (lots of other traffic happening at the same time). Is there a way to isolate a tcpdump or wireshark capture to the networking traffic of a single specific process? (Using netstat is insufficient.)
I have an external drive bay with 4 eSATA disks in it. My system has a 4-port eSATA card, as well as a pair of internal hardware RAID1 drives. The external drives are in software RAID1 pairs as /dev/md0 and /dev/md1. Both have been configured as LVM physical volumes to create my storagevg LVM volume group. Recently, a single drive went offline (I suspect cables), but there does not seem to be a good way to physically identify which drive I need to check, especially since initialization order isn't the same between boots. How can I find the disk needing attention?
I want to use Empathy, Skype, etc for video chat, but I want to have my face automatically detected and obscured in the video stream. What can I do to make that happen? I don't want to turn off video or just use a static image.
Where can I find a list of which architectures are available for Ubuntu, and which of those have official support from Canonical?
I've got a Blu-ray drive and I'd like to be able to use it to watch movies under Ubuntu.