I am also having this problem. However like Ryan most of my system is on a Linux software raid disk. I have 1 partition which is not on raid and the graph displays correctly for it.
As a rough hunch I would guess that the disk system monitor graph seems to only poll "sdX" and "hdX" devices and not "mdX". -- Hard disk graph in panel applet constantly reads 0% https://bugs.launchpad.net/bugs/275604 You received this bug notification because you are a member of Ubuntu Desktop Bugs, which is a bug assignee. -- desktop-bugs mailing list desktop-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/desktop-bugs