Hello, I'm a long-time Debian/Ubuntu user who have decided to finally try out Fedora. So I installed F10 (x86_64, KDE version) on my ThinkPad X61s. One of the first things I noticed was that my hard drive made clicking sounds every few seconds, due to excessive head parking. The hard drive power management feature was not managed by F10, so I submitted a bug about that (#473568). However, as I was playing around with it more, the more I realised that Fedora's power management leaves _a lot_ to be desired. It is barely there at all! Here's a short list over things that I've noticed so far: Many settings are not adjusted when (dis)connecting mains: - /proc/sys/vm/laptop_mode - /sys/class/scsi_host/host*/link_power_management_policy - /sys/class/net/wlan0/device/tx_power - Hard drive APM (hdparm -B) - Various tricks to prevent waking hard drive too often: - Increasing dirty_writeback_centisecs and readahead - Remounting file systems with -o relatime Laptop-mode-utils, which handles lot of these settings, is absent. Possibly pm-utils is supposed to replace it? It only seems to control /sys/devices/system/cpu/sched_mc_power_savings, though, which makes it a very incomplete replacement. In my opinion, F10 is unsuitable for laptops (at least if you care about battery lifetime). I'd like to help out and improve the situation, though, but where do I start? I'm thinking about submitting power.d scripts for pm-utils that'll adjust the knobs I've listed above, but I'm don't know if pm-utils is meant to be the preferred «Fedora Way» of handling power management or not, seeing how it does almost nothing at all right now. If it isn't, then what is? Best regards, -- Tore Anderson -- fedora-list mailing list fedora-list@xxxxxxxxxx To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list Guidelines: http://fedoraproject.org/wiki/Communicate/MailingListGuidelines
