Hi. I'm using Ubuntu 14.04.1 and kernel 3.19.0-51-generic. This week this error started with me. when I disable the indicator, it stops of write the log.
-- You received this bug notification because you are a member of Unity API bugs, which is subscribed to Indicator Date and Time. https://bugs.launchpad.net/bugs/1251222 Title: indicator-datetime stops the disk from spinning down Status in Indicator Date and Time: Fix Released Bug description: I've already reported this bug in Ask Ubuntu (http://askubuntu.com/questions/376890/indicator-datetime-stops-the- disk-from-spinning-down), so I'll repeat what I posted there: I'm running Ubuntu 13.10 on a laptop, and have `laptop-mode-tools` installed. I've noticed that, while running on battery, the laptop's hard disk is not spinning down successfully. About every five seconds, the disk starts spinning down but then something makes it spin back up again. I've investigated this a bit (with the help of Google), and found some things: * I've installed and run `iotop`. Every time the disk starts spinning down, iotop reports that the process `init --user` is writing to the disk and using 99% IO. * After letting the laptop "alone" for 2 or 3 minutes on battery, `find -cmin -1` on my home directory reports that the file `~/.cache/upstart/unity-panel-service.log` was recently modified. * If I run `tail -f ~/.cache/upstart/unity-panel-service.log`, I noticed that this file is updated every second, and the line ** (unity-panel-service:2711): WARNING **: Unable to support GtkImageType: 0 is appended. * `sudo strace -p <"init --user"'s PID>` constantly outputs the following lines (or similar): read(3, 0x7fff3c96871b, 1) = -1 EAGAIN (Resource temporarily unavailable) waitid(P_ALL, 0, {}, WNOHANG|WEXITED|WSTOPPED|WCONTINUED, NULL) = 0 select(37, [3 5 6 7 8 9 10 11 12 13 19 20 21 26 27 29 36], [], [7 8 9 10 12 20 21], NULL) = 1 (in [36]) read(36, "\r\n** (unity-panel-service:2711):"..., 8192) = 160 read(36, 0x7f5a06c21830, 8032) = -1 EAGAIN (Resource temporarily unavailable) fstat(14, {st_mode=S_IFREG|0640, st_size=384106, ...}) = 0 write(14, "\r\n** (unity-panel-service:2711):"..., 160) = 160 * As a side note, `cat /proc/sys/vm/dirty_writeback_centisecs` returns `500` while on AC power and `60000` while on battery. Has anyone noticed the same thing? I don't know if this occurs in a fresh install (or if this occurred in 13.04). --- I've investigated even further before posting this, and the culprit seems to be the date/time indicator. I had configured the indicator to display the seconds. If I remove that setting, the _unity-panel-service.log_ file no longer is updated every second (but, maybe, every minute), and the disk spins down successfully. So, the workaround (until there is a fix) seems to be: don't display the seconds in the date/time indicator, or remove it. I think fixing this is important, because this bug is stopping the hard drive disk from spinning down while on battery. To manage notifications about this bug go to: https://bugs.launchpad.net/indicator-datetime/+bug/1251222/+subscriptions -- Mailing list: https://launchpad.net/~unity-api-bugs Post to : unity-api-bugs@lists.launchpad.net Unsubscribe : https://launchpad.net/~unity-api-bugs More help : https://help.launchpad.net/ListHelp
