Allegedly, on or about 13 October 2015, Bob Goodwin sent: > 192.168.1.7 is an F-22 computer that is "turned off" [with the power > button] however I have noticed in the early morning darkness the usb > keyboard back-lights flash on occasionally. I assume it is something > set in the BIOS configuration but have never known what to look for > and since it works as it is I've never considered it important enough > to bother with. My curiosity gets to me this morning ... > > Any idea what it is or what I should do about it if it matters would > be of interest ... If it's one that can be turned on by the keyboard, either by pressing a special button, or just hitting any keys, the main board has to power the keyboard for that function to work. If that's not how it's turned on, you could look for BIOS options (or motherboard jumpers), to not power (some of) the USB devices when the computer is off (typically, known as "stand-by power"). There are often various "wakeup" options in a BIOS. You'd have to look carefully and distinguish between wake-up from already asleep options (un-hibernate), and things it monitors to stay awake and not going into standby mode (if you have a sleep if inactive setting). These days, "go to sleep when idle" should really be handled by the OS, not the BIOS, as the BIOS only has crude monitoring options. Years ago, I helped someone who's computer would inexplicably shutdown from time to time. It's BIOS was set to go to sleep when idle, but it was only monitoring the keyboard. If the owner was mousing about, or watching a video, the BIOS was unaware that the computer was in-use, and would shut it down. You could extend the monitoring, to notice if the hard drive was active, and other things, to prevent it nodding off. But it was easier to disable the sleep when idle functions in the BIOS, altogether. -- [tim@localhost ~]$ uname -rsvp Linux 3.9.10-100.fc17.x86_64 #1 SMP Sun Jul 14 01:31:27 UTC 2013 x86_64 All mail to my mailbox is automatically deleted, there is no point trying to privately email me, I will only read messages posted to the public lists. I don't think it's pure coincidence that "officialdom" sounds the same as "official dumb." -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org
